AMERICAN CENTURY INTERNATIONAL BOND FUNDS (Form: 485BPOS, Received: 02/28/2020 12:39:12)

As Filed with the U.S. Securities and Exchange Commission on February 28, 2020

1933 Act File No. 033-43321

1940 Act File No. 811-06441



UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549
__________________
FORM N-1A
__________________

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x

Pre-Effective Amendment No.	☐

Post-Effective Amendment No. 62	x

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x

Amendment No. 63	x
(Check appropriate box or boxes.)
__________________
American Century International Bond Funds (Exact Name of Registrant as Specified in Charter)
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4500 MAIN STREET, KANSAS CITY, MISSOURI 64111 (Address of Principal Executive Offices)(Zip Code)
REGISTRANT’S TELEPHONE NUMBER, INCLUDING AREA CODE: (816) 531-5575
CHARLES A. ETHERINGTON 4500 MAIN STREET, KANSAS CITY, MISSOURI 64111 (Name and Address of Agent for Service)
Approximate Date of Proposed Public Offering: March 1, 2020

It is proposed that this filing will become effective (check appropriate box)



☐	immediately upon filing pursuant to paragraph (b)
x	on March 1, 2020, at 8:30 a.m. (Central) pursuant to paragraph (b)
☐	60 days after filing pursuant to paragraph (a)(1)
☐	on (date) pursuant to paragraph (a)(1)
☐	75 days after filing pursuant to paragraph (a)(2)
☐	on (date) pursuant to paragraph (a)(2) of rule 485

If appropriate, check the following box:
☐	this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

March 1, 2020

American Century Investments

Prospectus

Emerging Markets Debt Fund

Investor Class (AEDVX)

I Class (AEHDX)

Y Class (AEYDX)

A Class (AEDQX)

C Class (AEDHX)

R Class (AEDWX)

R5 Class (AEDJX)

R6 Class (AEXDX)

G Class (AEDGX)

Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the fund’s shareholder reports will no longer be sent by mail, unless you specifically request paper copies of the reports from the fund or from your financial intermediary, such as a broker-dealer or bank. Instead, the reports will be made available on a website, and you will be notified by mail each time a report is posted and provided with a website link to access the report.

If you already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. You may elect to receive shareholder reports and other communications from the fund or your financial intermediary electronically by calling or sending an email request.

You may elect to receive all future reports in paper free of charge. You can inform the fund or your financial intermediary that you wish to continue receiving paper copies of your shareholder reports by calling or sending an email request. Your election to receive reports in paper will apply to all funds held with the fund complex/your financial intermediary.



The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Table of Contents



Fund Summary	2
Investment Objective	2
Fees and Expenses	2
Principal Investment Strategies	3
Principal Risks	3
Fund Performance	5
Portfolio Management	6
Purchase and Sale of Fund Shares	6
Tax Information	6
Payments to Broker-Dealers and Other Financial Intermediaries	6
Objectives, Strategies and Risks	7
Management	10
Investing Directly with American Century Investments	12
Investing Through a Financial Intermediary	14
Additional Policies Affecting Your Investment	19
Share Price and Distributions	23
Taxes	25
Multiple Class Information	27
Financial Highlights	28

Appendix A	A-1

Fund Summary

Investment Objective

The fund seeks total return.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in American Century Investments funds. More information about these and other discounts is available from your financial professional and in Calculation of Sales Charges on page 15 of the fund’s prospectus, Appendix A of the fund’s prospectus and Sales Charges in Appendix B of the statement of additional information.



Shareholder Fees (fees paid directly from your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	None	None	None	4.50%	None	None	None	None	None
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of the original offering price or redemption proceeds when redeemed within one year of purchase)	None	None	None	None¹	1.00%	None	None	None	None
Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)	$25	None	None	None	None	None	None	None	None



Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Management Fee	0.96%	0.86%	0.76%	0.96%	0.96%	0.96%	0.76%	0.71%	0.71%
Distribution and Service (12b-1) Fees	None	None	None	0.25%	1.00%	0.50%	None	None	None
Other Expenses	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses	0.97%	0.87%	0.77%	1.22%	1.97%	1.47%	0.77%	0.72%	0.72%
Fee Waiver	None	None	None	None	None	None	None	None	0.71%²
Total Annual Fund Operating Expenses After Fee Waiver	0.97%	0.87%	0.77%	1.22%	1.97%	1.47%	0.77%	0.72%	0.01%

¹Purchases of $1 million or more may be subject to a contingent deferred sales charge of 1.00% if the shares are redeemed within one year of the date of purchase.

²The advisor has agreed to waive the G Class’s management fee in its entirety. The advisor expects this waiver to remain in effect permanently and cannot terminate it without the approval of the Board of Trustees.

Example

The example below is intended to help you compare the costs of investing in the fund with the costs of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods and that you earn a 5% return each year. The example also assumes that the fund’s operating expenses remain the same, except that it reflects the rate and duration of any fee waivers noted in the table above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:



	1 year	3 years	5 years	10 years
Investor Class	$99	$310	$537	$1,190
I Class	$89	$278	$483	$1,073
Y Class	$79	$246	$428	$955
A Class	$569	$820	$1,091	$1,860
C Class	$200	$619	$1,063	$2,293
R Class	$150	$466	$803	$1,756
R5 Class	$79	$246	$428	$955
R6 Class	$74	$231	$401	$895
G Class	$1	$3	$6	$13

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 75% of the average value of its portfolio.

Principal Investment Strategies

Under normal market conditions, the fund invests at least 80% of its net assets in fixed income instruments of issuers that are economically tied to emerging markets. The fund will invest in debt instruments issued by foreign governments and corporations. Investments will typically be made in U.S. dollar denominated instruments, but may be denominated in local emerging markets currency as well.

The fund considers an emerging market to be any country that is located outside the following developed countries list, which is subject to change: Australia, Austria, Belgium, Bermuda, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Japan, Luxembourg , the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the United States. In determining an issuer’s location, the portfolio managers may consider various factors including, among others, where the issuer is headquartered, where the issuer’s principal operations are located, where the issuer’s revenues are derived, where the principal trading market is located and the country in which the issuer was legally organized. The weight given to each of these factors will vary depending on the circumstances in a given case.

The fund may invest without limitation in both investment grade and high-yield (“junk bonds”) debt securities. An “investment grade” security is one that has been rated in one of the four highest categories used by a nationally recognized statistical rating organization or determined by the investment advisor to be of comparable credit quality. A “high-yield” security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The average duration of the fund varies based on the portfolio managers’ forecast of interest rates and, under normal market conditions is not expected to exceed ten years. Duration is an indication of the relative sensitivity of a security’s market value to changes in interest rates. The longer a security’s duration, the more sensitive it will be to changes in interest rates. Duration is different from maturity in that it attempts to measure the interest rate sensitivity of a security, as opposed to its expected final maturity.

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund may use foreign currency exchange contracts to shift its investment exposure from one currency into another, for hedging purposes or to enhance returns. The fund may invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. The fund may also invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

The portfolio managers may engage in hedging of portfolio positions, which usually involves entering into a derivative transaction that has the opposite characteristics of the position being hedged. The net effect of these two positions is to reduce or eliminate the exposure created by the first position.

To determine whether to buy or sell a security, the portfolio managers consider, among other things, various fund requirements and standards, along with economic conditions, alternative investments, interest rates and whether to alter geographic or currency exposure.

Principal Risks

•

Foreign Securities Risk – The fund may invest in foreign securities, which are generally riskier than U.S. securities. As a result the fund may be subject to foreign risk, meaning that political events (such as civil unrest, national elections and imposition of exchange controls), social and economic events (such as labor strikes and rising inflation), and natural disasters occurring in a country where the fund invests could cause the fund’s investments in that country to experience losses. For these and other reasons, securities of foreign issuers may be less liquid, more volatile and harder to value than U.S. securities.

•

Emerging Market Risk – Investing in securities of issuers located in emerging market countries generally is riskier than investing in securities of issuers located in foreign developed countries. Emerging market countries may have unstable governments and/or economies that are subject to sudden change. These changes may be magnified by the countries’ emergent financial markets, resulting in significant volatility to investments in these countries. These countries also may lack the legal, business and social framework to support securities markets.


•	Currency Risk – Because the fund may invest in securities denominated in foreign currencies, the fund may be subject to currency risk, meaning that the fund could experience gains or losses based solely on changes in the exchange rate between foreign currencies and the U.S. dollar.

•

Credit Risk – Debt securities, especially high-yield debt securities, are subject to credit risk. Credit risk is the risk that the inability or perceived inability of the issuer to make interest and principal payments will cause the value of the securities to decrease. As a result the fund’s share price could also decrease. Changes in the credit rating of a debt security held by the fund could have a similar effect.


•	High-Yield Securities Risk – Issuers of high-yield securities are more vulnerable to real or perceived economic changes (such as an economic down turn or a prolonged period of rising interest rates), political changes or adverse developments specific to an issuer. These factors may be more likely to cause an issuer of low quality bonds to default on its obligations.

•

Interest Rate Risk – Investments in debt securities are sensitive to interest rate changes. Generally, the value of debt securities and the funds that hold them decline as interest rates rise. The fund’s investments are designed to reduce this risk. Interest rate risk, however, is generally higher for the fund than for funds that have a shorter-weighted average maturity, such as money market funds and short-term bond funds. The fund will also be exposed to interest rate risk outside of the U.S. where interest rate trends may differ from those in the U.S. A period of rising interest rates may negatively affect the fund’s performance.

•

Liquidity Risk – The fund may also be subject to liquidity risk. During periods of market turbulence or unusually low trading activity, in order to meet redemptions it may be necessary for the fund to sell securities at prices that could have an adverse effect on the fund’s price. Changing regulatory and market conditions, including increases in interest rates and credit spreads, may adversely affect the liquidity of the fund’s investments. In addition, when the market for certain investments is illiquid, the fund may be unable to achieve its desired level of exposure to a certain sector. Illiquid securities may also be difficult to value.

•

Sovereign Debt Risk – Sovereign debt instruments, which are instruments issued by foreign governmental entities, are subject to the risk that the governmental entity may be unable or unwilling to repay the principal or interest on its sovereign debt due to, among other reasons, cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of the governmental entity’s debt or its failure to implement economic reforms. There is no bankruptcy process for collecting sovereign debt and legal remedies may be limited and onerous to pursue.


•	Single Country Risk – Investing a significant portion of assets in one country or region makes the fund more dependent upon the political and economic circumstances of that particular country or region than a fund that is more widely diversified.


•	Counterparty Risk – If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.

•

Derivatives Risk – The use of derivative instruments, such as futures, options and swaps, involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional instruments. Derivatives are subject to a number of risks, including leverage, liquidity, interest rate, market, credit, counterparty and correlation risk. Derivatives can be highly illiquid and difficult to unwind or value, and changes in the value of a derivative held by the fund may not correlate with the value of the underlying instrument or the fund’s other investments. Gains or losses involving some futures, options and other derivatives may be substantial – in part because a relatively small price movement in these instruments may result in an immediate and substantial gain or loss for the fund.

•

Bank Loan Risk – The market for bank loans may not be highly liquid and the fund may have difficulty selling them. In connection with purchasing loan participations, the fund generally will have no right to enforce compliance by borrowers with loan terms nor any set off rights, and the fund may not benefit directly from any posted collateral. As a result, the fund may be subject to the credit risk of both the borrower and the lender selling the participation. Bank loan transactions may take more than seven days to settle, meaning that proceeds would be unavailable to make additional investments or meet redemptions.

•

Collateralized Debt Obligations/Collateralized Loan Obligation Risk – Collateralized debt obligations and collateralized loan obligations (CLOs) are subject to credit, interest rate, valuation, and prepayment and extension risks. These securities also are subject to risk of default on the underlying asset, particularly during periods of economic downturn. The market value of CLOs may be affected by, among other things, changes in the market value of the underlying assets held by the CLO, changes in the distributions on the underlying assets, defaults and recoveries on the underlying assets, capital gains and losses on the underlying assets, prepayments on underlying assets and the availability, prices and interest rate of underlying assets.

•

Redemption Risk – The fund may need to sell securities at times it would not otherwise do so in order to meet shareholder redemption requests. Selling securities to meet such redemptions may cause the fund to experience a loss, increase the fund’s transaction costs or have tax consequences. To the extent that a large shareholder (including a fund of funds or 529 college savings plan) invests in the fund, the fund may experience relatively large redemptions as such shareholder reallocates its assets.


•	Market Risk – The risk that the value of securities owned by the fund may go up and down, sometimes rapidly or unpredictably.


•	Principal Loss – At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Fund Performance

The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, including yields, please visit americancentury.com.

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Calendar Year Total Returns

Highest Performance Quarter (1Q 2019): 5.10% Lowest Performance Quarter (3Q 2015): -2.12%



Average Annual Total Returns For the calendar year ended December 31, 2019	1 year	5 year	Since Inception	Inception Date
Investor Class Return Before Taxes	12.38%	5.37%	4.70%	07/29/2014
Return After Taxes on Distributions	10.53%	3.73%	3.09%	07/29/2014
Return After Taxes on Distributions and Sale of Fund Shares	7.28%	3.38%	2.87%	07/29/2014
I Class¹Return Before Taxes	12.50%	5.48%	4.80%	04/10/2017
Y Class¹ Return Before Taxes	12.60%	5.58%	4.91%	04/10/2017
A Class Return Before Taxes	7.05%	4.15%	3.56%	07/29/2014
C Class Return Before Taxes	11.19%	4.34%	3.66%	07/29/2014
R Class Return Before Taxes	11.84%	4.87%	4.19%	07/29/2014
R5 Class Return Before Taxes	12.63%	5.59%	4.92%	07/29/2014
R6 Class Return Before Taxes	12.66%	5.64%	4.96%	07/29/2014
G Class Return Before Taxes	13.45%	—	5.54%	11/14/2017
JPMorgan Corporate Emerging Market Bond (CEMBI) Broad Diversified Index (reflects no deduction for fees, expenses or taxes)	13.09%	5.93%	5.16%	07/29/2014

¹Historical performance for the I and Y Classes prior to their inception is based on the performance of R5 Class shares. I and Y Class performance has been adjusted to reflect differences in expenses between classes, if applicable. Since inception performance for the I and Y Classes is based on the R5 Class inception date.

The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.

Portfolio Management

Investment Advisor

American Century Investment Management, Inc.

Portfolio Managers

John A. Lovito, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2009.

Brian Howell, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 1987.

Thomas Youn, Portfolio Manager and Senior Corporate Analyst, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2014.

Alessandra Alecci, Vice President, Portfolio Manager and Senior Sovereign Analyst, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2015.

Purchase and Sale of Fund Shares

You may purchase or redeem shares of the fund on any business day through our website at americancentury.com, in person (at one of our Investor Centers), by mail (American Century Investments, P.O. Box 419200, Kansas City, MO 64141-6200), by telephone at 1-800-345-2021 (Investor Services Representative) or 1-800-345-3533 (Business, Not-For-Profit and Employer-Sponsored Retirement Plans), or through a financial intermediary. Shares may be purchased and redemption proceeds received by electronic bank transfer, by check or by wire.

Unless otherwise specified below, the minimum initial investment amount to open an account is $2,500 ($2,000 for Coverdell Education Savings Accounts). Investors opening accounts through financial intermediaries may open an account with $250 for the Investor, A, C and R Classes, but the financial intermediaries may require their clients to meet different investment minimums. The minimum may be waived for broker-dealer sponsored wrap program accounts, fee based accounts, and accounts through bank/trust and wealth management advisory organizations.

The minimum initial investment amount for the I Class is generally $5 million ($3 million for endowments and foundations), but the minimum may be waived if you have an aggregate investment in the American Century family of funds of $10 million or more ($5 million for endowments and foundations). This includes accounts held directly with American Century and those held through a financial intermediary.

There is no minimum initial investment amount for Y, R5 or R6 Class shares.

For the Investor, A, C, R, R5 and R6 Classes, there is no minimum initial investment amount for certain employer-sponsored retirement plans, however, financial intermediaries or plan recordkeepers may require plans to meet different minimums. For purposes of fund minimums, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Employer-sponsored retirement plans are not eligible to purchase I or Y Class shares.

There is a $50 minimum for subsequent purchases, except that there is no subsequent purchase minimum for financial intermediaries or employer-sponsored retirement plans.

G Class shares are available for purchase only by funds advised by American Century Investments and other American Century advisory clients that are subject to a contractual fee for investment management services. G Class shares do not have a minimum purchase amount.

Tax Information

Fund distributions are generally taxable as ordinary income or capital gains, unless you are investing through a tax-deferred account such as a 401(k) or individual retirement account (in which case you may be taxed upon withdrawal of your investment from such account).

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the fund through a broker-dealer or other financial intermediary (such as a bank, insurance company, plan sponsor or financial professional), the fund and its related companies may pay the intermediary for the sale of fund shares and related services for investments in all classes except the Y, R6 and G Classes. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

Objectives, Strategies and Risks

What is the fund’s investment objective?

The fund seeks total return.

The fund’s investment objective is a nonfundamental investment policy and may be changed by the Board of Trustees without shareholder approval upon 60 days’ notice to shareholders.

What are the fund’s principal investment strategies?

Under normal market conditions, the fund invests at least 80% of its net assets in fixed income instruments of issuers that are economically tied to emerging markets. The fund will invest in debt instruments issued by foreign governments (including their agencies, authorities, instrumentalities and political subdivisions) and corporations. Investments will typically be made in U.S. dollar denominated instruments, but may be denominated in local emerging markets currency as well.

The fund may invest in both investment grade and high-yield (“junk bonds”) debt securities without limitation. An “investment grade” security is one that has been rated in one of the four highest categories used by a nationally recognized statistical rating organization or determined by the investment advisor to be of comparable credit quality. A “high-yield” security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The weighted average duration of the fund’s portfolio is not expected to exceed ten years. Duration, which is an indication of the relative sensitivity of a security’s market value to changes in interest rates, is based upon the aggregate of the present value of all principal and interest payments to be received, discounted at the current market rate of interest and expressed in years. The longer the weighted average duration of the fund’s portfolio, the more sensitive its market value is to interest rate fluctuations. For example, if the weighted average duration of the fund’s portfolio is two years, a 2% change in the value of the fund’s portfolio would be expected for every 1% change in interest rates.

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund may invest in foreign currency exchange contracts to shift its investment exposure from one currency into another, for hedging purposes or to enhance returns. The fund may invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. The fund may invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

In the event of exceptional market or economic conditions, the fund may take temporary defensive positions that are inconsistent with the fund’s principal investment strategies. To the extent the fund assumes a defensive position, it may not achieve its investment objective.

The portfolio managers decide which debt securities to buy and sell by, among other things,


•	identifying debt securities that satisfy the fund’s credit quality standards


•	determining whether to alter the fund’s geographic or currency exposure


•	determining which debt securities help the fund meet its maturity requirements


•	assessing current and anticipated interest rates


•	evaluating current economic conditions and the risk of inflation


•	evaluating special features of the debt securities that may make them more or less attractive to alternatives

A description of the policies and procedures with respect to the disclosure of the fund’s portfolio securities is available in the statement of additional information.

What are the principal risks of investing in the fund?

The fund may invest in foreign securities, which are generally riskier than U.S. securities. As a result, the fund may be subject to foreign risk, meaning that political events (such as civil unrest, national elections and imposition of exchange controls), social and economic events (such as labor strikes and rising inflation), and natural disasters occurring in a country where the fund invests could cause the fund’s investments in that country to experience losses. In addition, foreign securities can have reduced availability of public information, and the lack of uniform financial reporting and regulatory practices similar to those that apply to U.S. issuers. For these and other reasons, securities of foreign companies are often more volatile, less liquid and harder to value than those of U.S. issuers.

Investing in securities of issuers located in emerging market countries generally is also riskier than investing in securities of issuers located in foreign developed countries. Emerging market countries may have unstable governments and/or economies that are subject to sudden change. These changes may be magnified by the countries’ emergent financial markets, resulting in significant volatility to investments in these countries. These countries also may lack the legal, business and social framework to support securities markets.

In addition, investments in foreign countries are subject to currency risk, meaning that because a portion of the fund’s investments may be denominated in foreign currencies, the fund could experience gains or losses based solely on changes in the exchange rate between foreign currencies and the U.S. dollar.

Debt securities, even investment-grade debt securities, are subject to credit risk. Credit risk is the risk that the inability or perceived inability of the issuer to make interest and principal payments will cause the value of the securities to decrease. As a result the fund’s share price could also decrease. A high credit rating indicates a high degree of confidence by the rating organization that the issuer will be able to withstand adverse business, financial or economic conditions and make interest and principal payments on time. A lower credit rating indicates a greater risk of non-payment. Changes in the credit rating of a debt security held by the fund could have a similar effect. The fund’s credit quality restrictions apply at the time of purchase; the fund will not necessarily sell securities if they are downgraded by a rating agency.

The fund may invest part of its assets in securities rated in the lowest investment-grade category (e.g., BBB), and high-yield debt securities, including so-called junk bonds, which are rated in the fifth category (e.g., BB) or below. As a result, the fund may have increased credit risk. Although their securities are considered investment-grade, issuers of BBB-rated securities (and securities of similar quality) are more likely to have problems making interest and principal payments than issuers of higher-rated securities. Issuers of securities rated BB or below (and securities of similar quality) are even more vulnerable to real or perceived economic changes (such as an economic downturn or a prolonged period of rising interest rates), political changes or adverse developments specific to the issuer. In addition, lower-rated securities may be unsecured or subordinated to other obligations of the issuer. These factors may be more likely to cause an issuer of low-quality debt securities to default on its obligation to pay the interest and principal due under its securities.

When interest rates change, the fund’s share value will be affected. Generally, when interest rates rise, the fund’s share value will decline. The opposite is true when interest rates decline. The degree to which interest rate changes affect the fund’s performance varies and is related to the weighted average maturity of the fund. For example, when interest rates rise, you can expect the share value of a long-term bond fund to fall more than that of a short-term bond fund. When rates fall, the opposite is true. Interest rate risk, however, is generally higher for the fund than for funds that have shorter-weighted average maturities, such as money market and short-term bond funds. The fund will also be exposed to interest rate risk outside of the U.S. where interest rate trends may differ from those in the U.S. A period of rising interest rates may negatively affect the fund’s performance.

The fund may also be subject to liquidity risk. The chance that a fund will have difficulty selling its debt securities is called liquidity risk. During periods of market turbulence or unusually low trading activity, in order to meet redemptions it may be necessary for the fund to sell securities at prices that could have an adverse effect on the fund’s price. The market for lower-quality debt securities is generally even less liquid than the market for higher-quality securities. Adverse publicity and investor perceptions, as well as new and proposed laws, also may have a greater negative impact on the market for lower-quality securities. Changing regulatory and market conditions, including increases in interest rates and credit spreads, may adversely affect the liquidity of the fund’s investments. In addition, when the market for certain investments is illiquid, the fund may be unable to achieve its desired level of exposure to a certain sector. Illiquid securities may be difficult to value.

Sovereign debt instruments, which are instruments issued by foreign governmental entities, are subject to the risk that the governmental entity may be unable or unwilling to repay the principal or interest on its sovereign debt due to, among other reasons, cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of the governmental entity’s debt or its failure to implement economic reforms. There is no bankruptcy process for collecting sovereign debt and legal remedies may be limited and onerous to pursue.

Investing a significant portion of assets in one country or region makes the fund more dependent upon the political and economic circumstances of that particular country or region than a fund that is more widely diversified.

The use of derivative instruments, such as futures, options and swaps, involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional instruments. Derivatives are subject to a number of risks including leverage, liquidity, interest rate, market, credit, counterparty and correlation risk. Derivatives can be highly illiquid and difficult to unwind or value, and changes in the value of a derivative held by the fund may not correlate with the value of the underlying instrument or the fund’s other investments. They also involve the risk of mispricing or improper valuation, the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index, and the risk of default or bankruptcy of the other party to the instrument. Gains or losses involving some futures, options, and other derivatives may be substantial – in part because the leverage in a derivative instrument may cause a relatively small price movement in these instruments to result in an immediate and substantial gain or loss for the fund.

Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the fund and may involve a small investment of cash relative to the magnitude of the risk assumed.

Options are subject to the risk that the underlying security or asset does not rise sufficiently above the exercise price to cover the premium and transaction costs.

Swap agreements are agreements to exchange the return generated by one instrument for the return generated by another instrument (or index). Swap agreements subject a fund to the risk that the counterparty to the transaction may not meet its obligations. The fund also bears the risk of loss of the amount expected to be received under a swap agreement in the event of the default or bankruptcy of a counterparty. Interest rate swaps could result in losses if interest rate changes are not correctly anticipated by the fund. Credit default swaps could result in losses if the fund does not correctly evaluate the creditworthiness of the issuer on which the credit default swap is based.

Investments in bank loans, loans made by banks or other financial intermediaries to borrowers, require the fund to depend primarily upon the creditworthiness of the borrower for payment of principal and interest, exposing the fund to the credit risk of both the financial institution and the underlying borrower. The market for bank loans may not be highly liquid and the fund may have difficulty selling them. In connection with purchasing participations, the fund generally will have no right to enforce compliance by the borrower with the terms of the loan agreement, nor any rights with respect to any funds acquired by other lenders through set-off against the borrower, and the fund may not directly benefit from any collateral supporting the loan in which it has purchased the participation. In addition, transactions in bank loans may take more than seven days to settle. As a result, the proceeds from the sale of bank loans may not be readily available to make additional investments or to meet the fund’s redemption obligations. Some bank loan interests may not be registered under the Securities Act of 1933 and therefore not afforded the protections of the federal securities laws.

The risks of an investment in a collateralized debt obligation depend largely on the type of the collateral securities and the class of the debt obligation in which the fund invests. Collateralized debt obligations (CDOs) and collateralized loan obligations (CLOs) are subject to credit, interest rate, valuation, prepayment and extension risks. These securities also are subject to risk of default on the underlying asset, particularly during periods of economic downturn. The market value of CLO securities may be affected by, among other things, changes in the market value of the underlying assets held by the CLO, changes in the distributions on the underlying assets, defaults and recoveries on the underlying assets, capital gains and losses on the underlying assets, prepayments on underlying assets and the availability, prices and interest rate of underlying assets.

If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.

The fund may need to sell securities at times it would not otherwise do so in order to meet shareholder redemption requests. The fund could experience a loss when selling securities, particularly if the redemption requests are unusually large or frequent, occur in times of overall market turmoil or declining pricing for the securities sold or when the securities the fund wishes to sell are illiquid. Selling securities to meet such redemption requests also may increase transaction costs or have tax consequences. To the extent that a large shareholder (including a fund of funds or 529 college savings plan) invests in the fund, the fund may experience relatively large redemptions as such shareholder reallocates its assets. Although the advisor seeks to minimize the impact of such transactions where possible, the fund’s performance may be adversely affected.

The value of securities owned by the fund may go up and down, sometimes rapidly or unpredictably, due to factors affecting securities markets generally, particular industries, real or perceived adverse economic conditions or investor sentiment generally.

The fund’s share value will fluctuate, and at any given time your shares may be worth less than the price you paid for them. As a result, it is possible to lose money by investing in the fund. In general, funds that have higher potential income have higher potential loss.

Management

Who manages the fund?

The Board of Trustees, investment advisor and fund management team play key roles in the management of the fund.

The Board of Trustees

The Board of Trustees is responsible for overseeing the advisor’s management and operations of the fund pursuant to the management agreement. In performing their duties, Board members receive detailed information about the fund and its advisor regularly throughout the year, and meet at least quarterly with management of the advisor to review reports about fund operations. The trustees’ role is to provide oversight and not to provide day-to-day management. More than three-fourths of the trustees are independent of the fund’s advisor. They are not employees, directors or officers of, and have no financial interest in, the advisor or any of its affiliated companies (other than as shareholders of American Century Investments funds), and they do not have any other affiliations, positions or relationships that would cause them to be considered “interested persons” under the Investment Company Act of 1940.

The Investment Advisor

The fund’s investment advisor is American Century Investment Management, Inc. (the advisor). The advisor has been managing mutual funds since 1958 and is headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible for managing the investment portfolio of the fund and directing the purchase and sale of its investment securities. The advisor also arranges for transfer agency, custody and all other services necessary for the fund to operate.

For the services it provides to the classes of the fund other than G Class, the advisor receives a unified management fee based on a percentage of the daily net assets of those classes of shares of the fund. The management fee is calculated daily and paid monthly in arrears. The advisor pays all expenses of managing and operating the fund except brokerage expenses, taxes, interest, fees and expenses of the independent trustees (including legal counsel fees), extraordinary expenses, and expenses incurred in connection with the provision of shareholder services and distribution services under a plan adopted pursuant to Rule 12b-1 under the Investment Company Act of 1940. The difference in unified management fees among the classes is a result of their separate arrangements for non-Rule 12b-1 shareholder services. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class. For all classes other than the Y, R6 and G Classes, the advisor may pay unaffiliated third parties who provide recordkeeping and administrative services that would otherwise be performed by an affiliate of the advisor.

The G Class of the fund is subject to a contractual unified management fee that the advisor waives in its entirety. However, the advisor does receive a management fee from funds or client advisory accounts that invest in the G Class.



Management Fees Paid by the Fund to the Advisor as a Percentage of Average Net Assets for the Fiscal Year Ended October 31, 2019	Investor Class	I Class	Y Class	A Class	C Class	R Class	R5 Class	R6 Class	G Class
Emerging Markets Debt	0.96%	0.86%	0.76%	0.96%	0.96%	0.96%	0.76%	0.71%	0.00%

A discussion regarding the basis for the Board of Trustees’ approval of the fund’s investment advisory agreement with the advisor is available in the fund’s annual report to shareholders dated October 31, 2019 .

The Fund Management Team

The advisor uses teams of portfolio managers and analysts, organized by broad investment categories such as money markets, corporate bonds, government bonds and municipal bonds, in its management of fixed-income funds. Designated portfolio managers serve on the firm’s Global Fixed Income Investment Committee , which is responsible for periodically adjusting the fund’s dynamic investment parameters based on economic and market conditions. The fund’s other portfolio managers are responsible for security selection and portfolio construction for the fund within these parameters, as well as compliance with stated investment objectives and cash flow monitoring. Other members of the investment team provide research and analytical support but generally do not make day-to-day investment decisions for the fund.

The individuals listed below are jointly and primarily responsible for the day-to-day management of the fund described in this prospectus.

John A. Lovito (Global Fixed Income Investment Committee Representative )

Mr. Lovito, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments since joining the advisor in 2009. He has a bachelor’s degree in economics and an MBA in finance from Fordham University.

Brian Howell

Mr. Howell, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments since joining the advisor in 1987. He has a bachelor’s degree in mathematics/statistics and an MBA in finance from the University of California – Berkeley.

Thomas Youn

Mr. Youn, Portfolio Manager and Senior Corporate Analyst, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2014. He has a bachelor’s degree in biology from Brown University and an MBA from The University of Chicago Booth School of Business.

Alessandra Alecci

Ms. Alecci, Vice President, Portfolio Manager and Senior Sovereign Analyst, has served on teams managing fixed-income investments since joining the advisor in 2015. Prior to joining American Century Investments, she was an emerging markets analyst for Lazard Asset Management and a sovereign analyst for Moody’s Investors Service. She has a bachelor’s degree in history from New York University and a master’s degree in international economic policy from the School of International and Public Affairs at Columbia University.

The statement of additional information provides additional information about the accounts managed by the portfolio managers, the structure of their compensation, and their ownership of fund securities.

Fundamental Investment Policies

Shareholders must approve any change to the fundamental investment policies contained in the statement of additional information. The Board of Trustees and/or the advisor may change the fund’s investment objective and any other policies or investment strategies described in this prospectus or otherwise used in the operation of the fund at any time, subject to applicable notice provisions.

Investing Directly with American Century Investments

Services Automatically Available to You

Most accounts automatically have access to the services listed under Ways to Manage Your Account when the account is opened. If you have questions about the services that apply to your account type, please call us.

Generally, once your account is established, any registered owner (including those on jointly owned accounts) or any trustee (including those on trust accounts with multiple trustees), or any authorized signer on business accounts with multiple authorized signers, may transact business by any of the methods described below. American Century reserves the right to require all owners or trustees or authorized signers to act together, at our discretion.

Account Maintenance Fee

If you hold Investor Class shares of any American Century Investments fund, or I Class shares of the American Century Diversified Bond Fund, in an American Century Investments account (i.e., not through a financial intermediary or employer-sponsored retirement plan account), we may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will determine the amount of your total eligible investments twice per year, generally the last Friday in October and April. If the value of those investments is less than $10,000 at that time, we will automatically redeem shares in one of your accounts to pay the $12.50 fee as soon as administratively possible. Please note that you may incur tax liability as a result of the redemption. In determining your total eligible investment amount, we will include your investments in all personal accounts (including American Century Investments brokerage accounts) registered under your Social Security number. We will not charge the fee as long as you choose to manage your accounts exclusively online. You may enroll for exclusive online account management by visiting americancentury.com. Regardless of whether you manage your account online, you may request a paper copy of the prospectus, statement of additional information, or annual report free of charge.



	Personal accounts include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts, IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Investments brokerage accounts, you are currently not subject to this fee, but you may be subject to other fees.

Wire Purchases

Current Investors: If you would like to make a wire purchase into an existing account, your bank will need the following information. (To invest in a new fund, please call us first to set up the new account.)


•	American Century Investments bank information: Commerce Bank N.A., Routing No. 101000019, Account No. 2804918


•	Your American Century Investments account number and fund name


•	Your name


•	The contribution year (for IRAs only)


•	Dollar amount

New Investors: To make a wire purchase into a new account, please complete an application or call us prior to wiring money.

Ways to Manage Your Account

ONLINE

americancentury.com

Open an account: If you are a current or new investor, you can open an account by completing and submitting our online application. Current investors also can open an account by exchanging shares from another American Century Investments account with an identical registration.

Exchange shares: Exchange shares from another American Century Investments account with an identical registration.

Make additional investments: Make an additional investment into an established American Century Investments account. If we do not have your bank information, you can add it.

Sell shares*: Redeem shares and choose whether the proceeds are electronically transferred to your authorized bank account or sent by check to your address of record.

* Online redemptions up to $25,000 per day per account.

IN PERSON

If you prefer to handle your transactions in person, visit one of our Investor Centers and a representative can help you open an account, make additional investments, and sell or exchange shares.


•	4500 Main Street, Kansas City, MO — 8 a.m. to 5 p.m., Monday – Friday


•	4917 Town Center Drive, Leawood, KS — 8 a.m. to 5 p.m., Monday – Friday; 8 a.m. to noon, Saturday


•	1665 Charleston Road, Mountain View, CA — 8 a.m. to 5 p.m., Monday – Friday

BY TELEPHONE

Investor Services Representative: 1-800-345-2021

Business, Not-For-Profit and Employer-Sponsored Retirement Plans: 1-800-345-3533

Automated Information Line: 1-800-345-8765

Open an account: If you are a current investor, you can open an account by exchanging shares from another American Century Investments account with an identical registration.

Exchange shares: Call or use our Automated Information Line (available only to Investor Class shareholders).

Make additional investments: Call or use our Automated Information Line if you have authorized us to invest from your bank account. The Automated Information Line is available only to Investor Class shareholders.

Sell shares: Call or use our Automated Information Line. The Automated Information Line redemptions are up to $25,000 per day per account and are available for Investor Class shareholders only.

BY MAIL OR FAX

Mail Address: P.O. Box 419200, Kansas City, MO 64141-6200 — Fax: 1-888-327-1998

Open an account: Send a signed, completed application and check or money order payable to American Century Investments.

Exchange shares: Send written instructions to exchange your shares from one American Century Investments account to another with an identical registration.

Make additional investments: Send your check or money order for at least $50 with an investment slip. If you don’t have an investment slip, include your name, address and account number on your check or money order.

Sell shares: Send written instructions or a redemption form to sell shares. Call a Service Representative to request a form.

AUTOMATICALLY

Open an account: Not available.

Exchange shares: Send written instructions to set up an automatic exchange of your shares from one American Century Investments account to another with an identical registration.

Make additional investments: With the automatic investment service, you can purchase shares on a regular basis. You must invest at least $50 per month per account.

Sell shares: You may sell shares automatically by establishing a systematic redemption plan.

See Additional Policies Affecting Your Investment for more information about investing with us.

Investing Through a Financial Intermediary

The fund may be purchased by participants in employer-sponsored retirement plans or through financial intermediaries that provide various administrative and distribution services.



	Financial intermediaries include banks, broker-dealers, insurance companies, plan sponsors and financial professionals.

Although each class of the fund’s shares represents an interest in the same fund, each has a different cost structure, as described below. Which class is right for you depends on many factors, including how long you plan to hold the shares, how much you plan to invest, the fee structure of each class, and how you wish to compensate your financial professional for the services provided to you. Your financial professional can help you choose the option that is most appropriate.

Investor Class

Investor Class shares are available for purchase without sales charges or commissions but may be subject to account or transaction fees if purchased through financial intermediaries. These shares are available to investors in retail brokerage accounts, broker-dealer-sponsored fee-based advisory accounts, other advisory accounts where fees are charged, and employer-sponsored retirement plans.

I Class

I Class shares are available for purchase without sales charges or commissions by endowments, foundations, large institutional investors and financial intermediaries.

Y Class

A Class

A Class shares are available for purchase through broker-dealers and other financial intermediaries. These shares carry an initial sales charge and an ongoing distribution and service (12b-1) fee that is used to compensate your financial professional. See Calculation of Sales Charges below for commission amounts received by financial professionals on the purchase of A Class shares. The sales charge decreases with the size of the purchase, and may be reduced or eliminated in certain situations. See Reductions and Waivers of Sales Charges for A Class and CDSC Waivers below for a full description of the breakpoints, reductions and waivers that may be available through financial intermediaries in certain types of accounts or products.

C Class

C Class shares are available for purchase through broker-dealers and other financial intermediaries. These shares do not have an initial sales charge but carry an ongoing distribution and service (12b-1) fee. Except as noted below, the commission paid to your financial professional for purchases of C Class shares is 1.00% of the amount invested, and the shares have a contingent deferred sales charge (CDSC) when redeemed within one year of purchase. Your financial professional does not receive the distribution and service (12b-1) fee until the CDSC period has expired (it is retained by the distributor). See CDSC Waivers below for a full description of the waivers that may be available. C Class shares automatically convert to A Class shares 10 years after purchase.

R Class

R Class shares do not carry a sales charge or commission, but they have an ongoing distribution and service (12b-1) fee. R Class shares are available for purchase through certain employer-sponsored retirement plans. R Class shares also may be available for certain other accounts through financial intermediaries who have an agreement with us to offer R Class in certain products. Additionally, IRA accounts in R Class shares established through financial intermediaries prior to August 1, 2006, may make additional purchases. R Class shares are not available for purchase in the following types of employer-sponsored retirement plans: SEP IRAs, SIMPLE IRAs or SARSEPs, except that investors in such plans with accounts in R Class shares established prior to March 1, 2009, may make additional purchases, and certain intermediaries may have agreements with us to offer R Class shares in such plans as described above.

R5 Class

R5 Class shares are available for purchase without sales charges or commissions by participants in certain employer-sponsored retirement plans. Beginning April 10, 2017, R5 Class shares may be purchased or redeemed only through employer-sponsored retirement plans where a financial intermediary provides retirement recordkeeping services to plan participants. Accounts in R5 Class shares opened prior to April 10, 2017 remain eligible for the R5 Class.

R6 Class

R6 Class shares are available for purchase without sales charges or commissions by participants in certain employer-sponsored retirement plans. R6 Class shares may be purchased or redeemed only through employer-sponsored retirement plans where a financial intermediary provides retirement recordkeeping services to plan participants.

Calculation of Sales Charges

The information regarding sales charges provided herein is included free of charge and in a clear and prominent format at americancentury.com in the Investors Using Advisors and Investment Professionals portions of the website. From the description of A or C Class shares, a hyperlink will take you directly to this disclosure.

The availability of the sales charge reductions and waivers discussed below will depend upon whether you purchase your shares directly from the fund or through a financial intermediary. Intermediaries may have different policies and procedures regarding the availability of these reductions or waivers. Please refer to Appendix A for information provided by certain financial intermediaries regarding their sales charge waiver or discount policies that are applicable to investors transacting in fund shares through such financial intermediary.

A Class

A Class shares are sold at their offering price, which is net asset value plus an initial sales charge. This sales charge varies depending on the amount of your investment, and is deducted from your purchase before it is invested. The sales charges and the amounts paid to your financial professional are:



Purchase Amount	Sales Charge as a % of Offering Price	Sales Charge as a % of Net Amount Invested	Dealer Commission as a % of Offering Price
Less than $100,000	4.50%	4.71%	4.00%
$100,000 - $249,999	3.50%	3.63%	3.00%
$250,000 - $499,999	2.50%	2.56%	2.00%
$500,000 - $999,999	2.00%	2.04%	1.75%
$1,000,000 - $3,999,999	0.00%	0.00%	0.75%
$4,000,000 - $9,999,999	0.00%	0.00%	0.50%
$10,000,000 or more	0.00%	0.00%	0.25%

There is no front-end sales charge for purchases of $1,000,000 or more, but if you redeem your shares within one year of purchase you will pay a deferred sales charge of 1.00% of the lower of the original purchase price or the current market value at redemption, subject to the exceptions listed below. No sales charge applies to reinvested dividends. No dealer commission will be paid to your financial professional for purchases by certain employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Reductions and Waivers of Sales Charges for A Class

You may qualify for a reduction or waiver of certain sales charges, but you or your financial professional must provide certain information, including the account numbers of any accounts to be aggregated, to American Century Investments at the time of purchase in order to take advantage of such reduction or waiver. If you hold assets among multiple intermediaries, it is your responsibility to inform your intermediary and/or American Century Investments at the time of purchase of any accounts to be aggregated.

You and your immediate family (which includes your spouse or domestic partner and children, step-children, parents or step-parents of you, your spouse or domestic partner) may combine investments in any share class of any American Century Investments fund (excluding certain assets in money market accounts, but including account assets invested in Qualified Tuition Programs under Section 529) to reduce your A Class sales charge in the following ways:

Account Aggregation. Investments made by you and your immediate family may be aggregated at each account’s current market value if made for your own account(s) and/or certain other accounts, such as:


•	Certain trust accounts


•	Solely controlled business accounts


•	Single-participant retirement plans


•	Endowments or foundations established and controlled by you or an immediate family member

For purposes of aggregation, only investments made through individual-level accounts may be combined. Assets held in multiple participant employer-sponsored retirement plans may be aggregated at a plan level.

Concurrent Purchases. You may combine simultaneous purchases in any share class of any American Century Investments fund to qualify for a reduced A Class sales charge.

Rights of Accumulation. You may take into account the current value of your existing holdings, less commissionable shares in the money market funds, in any share class of any American Century Investments fund to qualify for a reduced A Class sales charge.

Letter of Intent. A Letter of Intent allows you to combine all purchases of any share class of any American Century Investments fund you intend to make over a 13-month period to determine the applicable sales charge, except for purchases in the A or C Class of money market funds. At your request, existing holdings may be combined with new purchases and sales charge amounts may be adjusted for purchases made within 90 days prior to our receipt of the Letter of Intent. Capital appreciation, capital gains and reinvested dividends earned during the Letter of Intent period do not apply toward its completion. A portion of your account will be held in escrow to cover additional A Class sales charges that will be due if your total investments over the 13-month period do not qualify for the applicable sales charge reduction.

Waivers for Certain Investors. The sales charge on A Class shares may be waived for:


•	Purchases by registered representatives and other employees of certain financial intermediaries (and their immediate family members, which includes their spouse or domestic partner and children, step-children, parents or step-parents of them, their spouse or domestic partner) having selling agreements with the advisor or distributor


•	Broker-dealer sponsored wrap program accounts and/or fee-based accounts maintained for clients of certain financial intermediaries who have entered into selling agreements with American Century Investments


•	Purchases in accounts of financial intermediaries that have entered into a selling agreement with American Century Investments that allows for the waiver of the sales charge in brokerage accounts that may or may not charge a transaction fee


•	Current officers, directors and employees of American Century Investments

•

Certain group employer-sponsored retirement plans, where plan level or omnibus accounts are held with the fund, or shares are purchased by certain retirement plans that are part of a retirement plan or platform offered by banks, broker dealers, financial advisors or insurance companies, or serviced by retirement recordkeepers. For purposes of this waiver, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs. However, SEP IRA, SIMPLE IRA or SARSEP retirement plans that (i) held shares of an A Class fund prior to March 1, 2009 that received sales charge waivers or (ii) held shares of an Advisor Class fund that was renamed A Class on March 1, 2010, may permit additional purchases by new and existing participants in A Class shares without an initial sales charge. Refer to Buying and Selling Fund Shares in the statement of additional information


•	Purchases of additional shares in accounts that held shares of an Advisor Class fund that was renamed A Class on either September 4, 2007, December 3, 2007 or March 1, 2010. However, if you close your account or if you transfer your account to another financial intermediary, future purchases of A Class shares of a fund may not receive a sales charge waiver.

An investor who receives a sales charge waiver for purchases of fund shares through a financial intermediary may become ineligible to receive such waiver if the nature of the investor’s relationship with and/or the services it receives from the financial intermediary changes. Please consult with your financial professional for further details.

C Class

C Class shares are sold at their net asset value without an initial sales charge. If you purchase shares through a financial intermediary who receives a commission from the fund’s distributor on the purchase and redeem your shares within 12 months of purchase, you will pay a CDSC of 1.00% of the original purchase price or the current market value at redemption, whichever is less. The purpose of the CDSC is to permit the fund’s distributor to recoup all or a portion of the up-front payment made to your financial professional. There is no CDSC on shares acquired through reinvestment of dividends or capital gains.

American Century Investments generally limits purchases of C Class shares to investors whose aggregate investments in American Century Investments funds are less than $1,000,000. However, it is your responsibility to inform your financial intermediary and/or American Century Investments at the time of purchase of any accounts to be aggregated, including investments in any share class of any American Century Investments fund (excluding certain assets in money market accounts, but including account assets invested in Qualified Tuition Programs under Section 529) in accounts held by you and your immediate family members (which includes your spouse or domestic partner and children, step-children, parents or step-parents of you, your spouse or domestic partner). Once you reach this limit, you should work with your financial intermediary to determine what share class is most appropriate for additional purchases.

C Class shares automatically convert to A Class shares after being held for 10 years. The automatic conversion will be executed in the month following the 10-year anniversary of the purchase date for such C Class shares without any sales charge, fee or other charges. The conversion from C Class shares is not considered a taxable event for Federal income tax purposes. After the conversion, shares will be subject to all features and expenses of A Class shares.

Calculation of Contingent Deferred Sales Charge (CDSC)

To minimize the amount of the CDSC you may pay when you redeem shares, the fund will first redeem shares acquired through reinvested dividends and capital gain distributions, which are not subject to a CDSC. Shares that have been in your account long enough that they are not subject to a CDSC are redeemed next. For any remaining redemption amount, shares will be sold in the order they were purchased (earliest to latest).

CDSC Waivers

Any applicable CDSC for A or C Classes may be waived in the following cases:


•	redemptions through systematic withdrawal plans not exceeding annually 12% of the lesser of the original purchase cost or current market value


•	redemptions through employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.


•	distributions from IRAs due to attainment of age 59½ for A and C Class shares


•	required minimum distributions from retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations


•	tax-free returns of excess contributions to IRAs


•	redemptions due to death or post-purchase disability


•	exchanges, unless the shares acquired by exchange are redeemed within the original CDSC period


•	IRA Rollovers from any American Century Investments fund held in an employer-sponsored retirement plan, for A Class shares only


•	if no dealer commission was paid to the financial intermediary on the purchase for any other reason

Reinstatement Privilege

Within 90 days of a redemption, dividend payment or capital gains distribution of any A Class shares, you may reinvest all or a portion of the proceeds in A Class shares of any American Century Investments fund at the then-current net asset value without paying an initial sales charge. At your request, any CDSC you paid on an A Class redemption that you are reinvesting will be credited to your account. You may use the privilege only once per account. This privilege may only be invoked by the original account owner to reinvest shares in an account with the same registration as the account from which the redemption or distribution originated. This privilege does not apply to systematic or automatic transactions, including, for example, automatic purchases, withdrawals and payroll deductions. If you wish to use this reinvestment privilege, you or your financial professional must provide written notice to American Century Investments.

Employer-Sponsored Retirement Plans

Certain group employer-sponsored retirement plans that hold a single account for all plan participants with the fund, or that are part of a retirement plan or platform offered by banks, broker-dealers, financial advisors or insurance companies, or serviced by retirement recordkeepers are eligible to purchase Investor, A, C, R, R5 and R6 Class shares. Employer-sponsored retirement plans are not eligible to purchase I or Y Class shares. For more information regarding employer-sponsored retirement plan types, please refer to Buying and Selling Fund Shares in the statement of additional information. A and C Class purchases are available at net asset value with no dealer commission paid to the financial professional, and do not incur a CDSC. A, C and R Class shares purchased in employer-sponsored retirement plans are subject to applicable distribution and service (12b-1) fees, which the financial intermediary begins receiving immediately at the time of purchase. American Century Investments does not impose minimum initial investment amount, plan size or participant number requirements by class for employer-sponsored retirement plans; however, financial intermediaries or plan recordkeepers may require plans to meet different requirements.

Exchanging Shares

You may exchange shares of the fund for shares of the same class of another American Century Investments fund without a sales charge if you meet the following criteria:


•	The exchange is for a minimum of $100


•	For an exchange that opens a new account, the amount of the exchange must meet or exceed the minimum account size requirement for the fund receiving the exchange

For purposes of computing any applicable CDSC on shares that have been exchanged, the holding period will begin as of the date of purchase of the original fund owned. Exchanges from a money market fund are subject to a sales charge on the fund being purchased, unless the money market fund shares were acquired by exchange from a fund with a sales charge or by reinvestment of dividends or capital gains distributions.

Moving Between Share Classes and Accounts

You may move your investment between share classes (within the same fund or between different funds) in certain circumstances deemed appropriate by American Century Investments. You also may move investments held in certain accounts to a different type of account if you meet certain criteria. Please contact your financial professional for more information about moving between share classes or account types.

Buying and Selling Shares Through a Financial Intermediary

Your ability to purchase, exchange, redeem and transfer shares will be affected by the policies of the financial intermediary through which you do business. Some policy differences may include


•	minimum investment requirements


•	exchange policies


•	fund choices


•	cutoff time for investments


•	trading restrictions

In addition, your financial intermediary may charge a transaction fee for the purchase or sale of fund shares. Those charges are retained by the financial intermediary and are not shared with American Century Investments or the fund. Please contact your financial intermediary or plan sponsor for a complete description of its policies. Copies of the fund’s annual report, semiannual report and statement of additional information are available from your financial intermediary or plan sponsor.

The fund has authorized certain financial intermediaries to accept orders on the fund’s behalf. American Century Investments has selling agreements with these financial intermediaries requiring them to track the time investment orders are received and to comply with procedures relating to the transmission of orders. Orders must be received by the financial intermediary on the fund’s behalf before the time the net asset value is determined in order to receive that day’s share price. If those orders are transmitted to American Century Investments and paid for in accordance with the selling agreement, they will be priced at the net asset value next determined after your request is received in the form required by the financial intermediary.

If you submit a transaction request through a financial intermediary that does not have a selling agreement with us, or if the financial intermediary’s selling agreement does not cover the type of account or share class requested, we may reject or cancel the transaction without prior notice to you or the intermediary.

Investor, I and Y Class shares may also be available on brokerage platforms of financial intermediaries that have agreements with American Century Investments to offer such shares solely when acting as an agent for the shareholder. A shareholder transacting in Investor, I or Y Class shares in these programs may be required to pay a commission and/or other forms of compensation to the broker. Shares of the fund are available in other share classes that have different fees and expenses.

See Additional Policies Affecting Your Investment for more information about investing with us.

Additional Policies Affecting Your Investment

Eligibility for Investor Class Shares

The fund’s Investor Class shares are available for purchase directly from American Century Investments and through the following types of products, programs or accounts offered by financial intermediaries:


•	self-directed accounts on transaction-based platforms that may or may not charge a transaction fee


•	employer-sponsored retirement plans


•	broker-dealer sponsored fee-based wrap programs or other fee-based advisory accounts


•	insurance products and bank/trust products where fees are being charged

The fund reserves the right, when in the judgment of American Century Investments it is not adverse to the fund’s interest, to permit all or only certain types of investors to open new accounts in the fund, to impose further restrictions, or to close the fund to any additional investments, all without notice.

Minimum Initial Investment Amounts for Investor, A, C and R Classes

Unless otherwise specified below, the minimum initial investment amount to open an account is $2,500. Investors opening accounts through financial intermediaries may open an account with $250, but the financial intermediaries may require their clients to meet different investment minimums. See Investing Through a Financial Intermediary for more information.



Broker-dealer sponsored wrap program accounts and/or fee-based advisory accounts	No minimum
Coverdell Education Savings Account (CESA)	$2,000¹
Employer-sponsored retirement plans²	No minimum


¹	The minimum initial investment for shareholders investing through financial intermediaries is $250. Financial intermediaries may have different minimums for their clients.


²	For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Subsequent Purchases

There is a $50 minimum for subsequent purchases. See Ways to Manage Your Account for more information about making additional investments directly with American Century Investments. However, there is no subsequent purchase minimum for financial intermediaries or employer-sponsored retirement plans, but financial intermediaries may require their clients to meet different subsequent purchase requirements.

Eligibility for I Class Shares

The I Class shares are made available for purchase by individuals and large institutional shareholders such as bank trust departments, corporations, endowments, foundations and financial advisors that meet the fund’s minimum investment requirements.

Minimum Initial Investment Amounts for I Class

The minimum initial investment amount is generally $5 million ($3 million for endowments and foundations) per fund. If you invest with us through a financial intermediary, this requirement may be met if your financial intermediary aggregates your investments with those of other clients into a single group, or omnibus, account that meets the minimum. The minimum investment requirement may be waived if you have an aggregate investment in our family of funds of $10 million or more ($5 million for endowments and foundations). This includes accounts held directly with American Century and those held through a financial intermediary. American Century Investments also may waive the minimum initial investment in other situations it deems appropriate.

American Century Investments may permit an intermediary to waive the initial minimum per shareholder as provided in Buying and Selling Fund Shares in the statement of additional information.

Eligibility for Y Class Shares

Y Class shares are available for purchase without sales charges or commissions through financial intermediaries that offer fee based advisory programs. Y Class shares may be purchased or redeemed only through financial intermediaries that trade in omnibus accounts with American Century Investments. Y Class shares may not be purchased by shareholders investing through employer-sponsored retirement plans or individuals investing directly with American Century Investments.

Minimum Initial Investment Amounts for Y Class

There is no minimum initial investment amount or subsequent investment amount for Y Class shares, but financial intermediaries may require different investment minimums.

Eligibility for R5 and R6 Class Shares

R6 Class shares also are available to funds of funds advised by American Century and unaffiliated funds of funds sold primarily to the employer-sponsored retirement plan market.

R5 and R6 Class shares are not available to retail accounts, traditional or Roth IRAs, SEP IRAs, SIMPLE IRAs, SARSEPs or Coverdell education savings accounts. However, accounts in R5 Class shares opened prior to April 10, 2017, remain eligible for the R5 Class.

Minimum Initial Investment Amounts for R5 and R6 Class

There is no minimum initial investment amount or subsequent investment amount for R5 and R6 Class shares, but financial intermediaries or plan recordkeepers may require plans to meet different investment minimums.

Eligibility and Minimum Initial Investment Amounts for G Class

Redemptions

Your redemption proceeds will be calculated using the net asset value (NAV) next determined after we receive your transaction request in good order. If you sell C or, in certain cases, A Class shares, you may pay a sales charge, depending on how long you have held your shares, as described above.

Generally, we expect to remit your redemption proceeds to you one business day after we process your transaction. However, we reserve the right to delay delivery of redemption proceeds up to seven days. For example, each time you make an investment with American Century Investments, there is a seven-day holding period before we will release redemption proceeds from those shares, unless you provide us with satisfactory proof that your purchase funds have cleared. Investments by wire generally require only a one-day holding period. If you change your address, we may require that any redemption request made within seven days be submitted in writing and be signed by all authorized signers with their signatures guaranteed. We may also require a signature guarantee for redemptions in other situations, as described below. If you change your bank information, we may impose a seven-day holding period before we will transfer or wire redemption proceeds to your bank. Please remember, if you request redemptions by wire, $10 will be deducted from the amount redeemed. Your bank also may charge a fee.

Additionally, if you are age 65 or older, or if we have reason to believe you have a mental or physical impairment that renders you unable to protect your own interest, we may temporarily delay the disbursement of redemption proceeds from your account if we believe that you have been the victim of actual or attempted financial exploitation. This temporary delay will be for an initial period of no more than 15 business days while we conduct an internal review of the facts and circumstances of the suspected financial exploitation. If our internal review supports our belief that actual or attempted financial exploitation has occurred or is occurring, we may extend the hold for up to 10 additional business days. At the expiration of the additional hold time, if we have not confirmed that exploitation has occurred, the proceeds will be released to you.

Under normal market conditions, the fund generally meets redemption requests through its holdings of cash or cash equivalents or by selling portfolio securities. However, we reserve the right to honor certain redemptions with securities, rather than cash, as described in the next section. Additionally, the fund may consider interfund lending to meet redemption requests. The fund is more likely to use these other methods to meet large redemption requests or during times of market stress.

Special Requirements for Large Redemptions

If, during any 90-day period, you redeem fund shares worth more than $250,000 (or 1% of the value of a fund’s assets if that amount is less than $250,000), we reserve the right to pay part or all of the redemption proceeds in excess of this amount in readily marketable securities instead of in cash. To the extent practicable, these securities will represent your pro rata share of the fund’s securities.

We will value these securities in the same manner as we do in computing the fund’s net asset value. We may provide these securities in lieu of cash without prior notice. Also, if payment is made in securities, you may have to pay brokerage or other transaction costs to convert the securities to cash. These securities remain subject to market risk until sold, and you may incur capital gains and/or losses when you sell the securities.

If your redemption would exceed this limit and you would like to avoid being paid in securities, please provide us with an unconditional instruction to redeem at least 15 days prior to the date on which the redemption transaction is to occur. The instruction must specify the dollar amount or number of shares to be redeemed and the date of the transaction. This minimizes the effect of the redemption on a fund and its remaining investors.

Redemption of Shares in Accounts Below Minimum

If your account balance falls below the minimum initial investment amount for any reason, American Century Investments reserves the right to redeem the shares in the account and send the proceeds to your address of record. Prior to doing so, we will notify you and give you 60 days to meet the minimum. Please note that shares redeemed in this manner may be subject to a sales charge if held less than the applicable time period. You also may incur tax liability as a result of the redemption. For I Class shares, we reserve the right to convert your shares to Investor Class shares of the same fund. The Investor Class shares have a unified management fee that is 0.10 percentage points higher than the I Class.

Small Distributions and Uncashed Distribution Checks

Generally, dividends and distributions cannot be paid by check for an amount less than $50. Any such amount will be automatically reinvested in additional shares. The fund reserves the right to reinvest any dividend or distribution amount you elect to receive by check if your check is returned as undeliverable or if you do not cash your check within six months. Interest will not accrue on the amount of your uncashed check. We will reinvest your check into your account at the NAV on the day of reinvestment. When reinvested, those amounts are subject to the risk of loss like any other fund investment. We also reserve the right to change your election to receive dividends and distributions in cash after a check is returned undeliverable or uncashed for the six month period, and we may automatically reinvest all future dividends and distributions at the NAV on the date of the payment.

Signature Guarantees

A signature guarantee — which is different from a notarized signature — is a warranty that the signature presented is genuine. We may require a signature guarantee for the following transactions.


•	Your redemption or distribution check or automatic redemption is made payable to someone other than the account owners;


•	Your redemption proceeds or distribution amount is sent by EFT (ACH or wire) to a destination other than your personal bank account;


•	You are transferring ownership of an account over $100,000;


•	You change your address and request a redemption over $100,000 within seven days;


•	You request proceeds from redemptions, dividends, or distributions be sent to an address or financial institution differing from those on record; or


•	You make a redemption or other transaction request via telephone, and we are unable to verify your identity.

We reserve the right to require a signature guarantee for other transactions, or we may employ other security measures, such as signature comparison or notarized signature, at our discretion.

Canceling a Transaction

American Century Investments will use its best efforts to honor your request to revoke a transaction instruction if your revocation request is received prior to the close of trading on the New York Stock Exchange (NYSE) (generally 4 p.m. Eastern time) on the trade date of the transaction. Once processing has begun, or the NYSE has closed on the trade date, the transaction can no longer be canceled. Each fund reserves the right to suspend the offering of shares for a period of time and to reject any specific investment (including a purchase by exchange). Additionally, we may refuse a purchase if, in our judgment, it is of a size that would disrupt the management of a fund.

Frequent Trading Practices

Frequent trading and other abusive trading practices may disrupt portfolio management strategies and harm fund performance. If the cumulative amount of frequent trading activity is significant relative to a fund’s net assets, the fund may incur trading costs that are higher than necessary as securities are first purchased then quickly sold to meet the redemption request. In such case, the fund’s performance could be negatively impacted by the increased trading costs created by frequent trading if the additional trading costs are significant.

Because of the potentially harmful effects of abusive trading practices, the fund’s Board of Trustees has approved American Century Investments’ abusive trading policies and procedures, which are designed to reduce the frequency and effect of these activities in our funds. These policies and procedures include monitoring trading activity, imposing trading restrictions on certain accounts and using fair value pricing when current market prices are not readily available. Although these efforts are designed to discourage abusive trading practices, they cannot eliminate the possibility that such activity will occur. American Century Investments seeks to exercise its judgment in implementing these tools to the best of its ability in a manner that it believes is consistent with shareholder interests.

American Century Investments uses a variety of techniques to monitor for and detect frequent trading practices. These techniques may vary depending on the type of fund, the class of shares or whether the shares are held directly or indirectly with American Century Investments. They may change from time to time as determined by American Century Investments in its sole discretion. To minimize harm to the funds and their shareholders, we reserve the right to reject any purchase order (including exchanges) from any shareholder we believe has a history of frequent trading or whose trading, in our judgment, has been or may be disruptive to the funds. In making this judgment, we may consider trading done in multiple accounts under common ownership or control.

Currently, for shares held directly with American Century Investments, we may deem the sale of all or a substantial portion of a shareholder’s purchase of fund shares to be frequent trading if the sale is made:


•	within seven days of the purchase; or


•	within 30 days of the purchase, if it happens more than once per year.

To the extent practicable, we try to use the same approach for defining frequent trading for shares held through financial intermediaries. American Century Investments reserves the right, in its sole discretion, to identify other trading practices as abusive and to modify its monitoring and other practices as necessary to deal with novel or unique abusive trading practices.

The frequent trading limitations do not apply to the following types of transactions:


•	purchases of shares through reinvested distributions (dividends and capital gains);


•	redemption of shares to pay fund or account fees;


•	CheckWriting redemptions;


•	redemptions requested following the death of a registered shareholder;


•	transactions through automatic purchase or redemption plans;


•	transfers and re-registrations of shares within the same fund;


•	shares exchanged from one share class to another within the same fund;


•	transactions by 529 college savings plans and funds of funds (however shareholders of American Century’s funds of funds are subject to the limitations); and


•	reallocation or rebalancing transactions in broker-dealer sponsored fee-based wrap and advisory programs.

For shares held in employer-sponsored retirement plans, generally only participant-directed exchange transactions are subject to the frequent trading restrictions. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs, or SARSEPs.

In addition, American Century Investments reserves the right to accept purchases and exchanges in excess of the trading restrictions discussed above if it believes that such transactions would not be inconsistent with the best interests of fund shareholders or this policy.

American Century Investments’ policies do not permit us to enter into arrangements with fund shareholders that permit such shareholders to engage in frequent purchases and redemptions of fund shares. Due to the complexity and subjectivity involved in identifying abusive trading activity and the volume of shareholder transactions American Century Investments handles, there can be no assurance that American Century Investments’ efforts will identify all trades or trading practices that may be considered abusive. American Century Investments monitors aggregate trades placed in omnibus accounts and works with financial intermediaries to identify shareholders engaging in abusive trading practices and impose restrictions to discourage such practices. Because American Century Investments relies on financial intermediaries to provide information and impose restrictions, our ability to monitor and discourage abusive trading practices in omnibus accounts may be dependent upon the intermediaries’ timely performance of such duties and restrictions may not be applied uniformly in all cases.

Your Responsibility for Unauthorized Transactions

American Century Investments and its affiliated companies use procedures reasonably designed to confirm that telephone, electronic and other instructions are genuine. These procedures include recording telephone calls, requesting additional identifying information, requiring personalized security codes or other information online, and sending confirmation of transactions. If we follow these procedures, we are not responsible for any losses that may occur due to unauthorized instructions. For transactions conducted over the Internet, we recommend the use of a secure Internet browser. In addition, you should verify the accuracy of your confirmation statements immediately after you receive them.

A Note About Mailings to Shareholders

To reduce the amount of mail you receive from us, we generally deliver a single copy of fund documents (like shareholder reports, proxies and prospectuses) to investors who share an address, even if their accounts are registered under different names. Investors who share an address may also receive account-specific documents (like statements) in a single envelope. If you prefer to receive your documents addressed individually, please call us or your financial professional. For American Century Investments brokerage accounts, please call 1-888-345-2071.

Right to Change Policies

We reserve the right to change any stated investment requirement, including those that relate to purchases, exchanges and redemptions. In accordance with applicable law, we also may alter, add or discontinue any service or privilege. Changes may affect all investors or only those in certain classes or groups. In addition, from time to time we may waive a policy on a case-by-case basis, as the advisor deems appropriate.

Share Price and Distributions

Share Price

American Century Investments will price the fund shares you purchase, exchange or redeem based on the net asset value (NAV) next determined after your order is received in good order by the fund’s transfer agent, or other financial intermediary with the authority to accept orders on the fund’s behalf. We determine the NAV of the fund as of the close of regular trading (usually 4 p.m. Eastern time) on the New York Stock Exchange (NYSE) on each day the NYSE is open. On days when the NYSE is closed (including certain U.S. national holidays), we do not calculate the NAV.



	The net asset value, or NAV, of each class of the fund is the current value of the class’s assets, minus any liabilities, divided by the number of shares of the class outstanding.

Readily available market quotations for fixed income securities shall generally be received from independent pricing services that have been approved by the Board. It is anticipated that such pricing services will generally provide evaluated prices based on accepted industry conventions. Evaluated prices are commonly derived through utilization of market models. Such models take into consideration various market factors and security characteristics. These may include, but are not limited to, the following: trade data, quotations from broker-dealers and active market makers, relevant yield curve and spread data, related sector levels, creditworthiness, trade data or market information on comparable securities and other relevant security specific information. Debt obligations with 60 days or less remaining until maturity may be valued at amortized cost.

If the fund determines that the market price for a portfolio security is not readily available or that the valuation methods mentioned above do not reflect the security’s fair value, such security is valued as determined in good faith by the fund’s board or its designee, in accordance with procedures adopted by the fund’s board. Circumstances that may cause the fund to use alternate procedures to value a security include, but are not limited to:


•	if, after the close of the foreign exchange on which a portfolio security is principally traded, but before the close of the NYSE, an event occurs that may materially affect the value of the security;


•	a debt security has been declared in default; or


•	trading in a security has been halted during the trading day.

If such circumstances occur, the fund will fair value the security if the fair valuation would materially impact the fund’s NAV. While fair value determinations involve judgments that are inherently subjective, these determinations are made in good faith in accordance with procedures adopted by the fund’s board.

The effect of using fair value determinations is that the fund’s NAV will be based, to some degree, on security valuations that the board or its designee believes are fair rather than being solely determined by the market.

With respect to any portion of the fund’s assets that are invested in one or more open-end management investment companies that are registered with the SEC (known as registered investment companies), the fund’s NAV will be calculated based upon the NAVs of such registered investment companies. These registered investment companies are required by law to explain the circumstances under which they will use fair value pricing and the effects of using fair value pricing in their prospectuses.

Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates at the time the fund’s NAV is determined.

Trading of securities in foreign markets may not take place every day the NYSE is open. Also, trading in some foreign markets and on some electronic trading networks may take place on weekends or holidays when the fund’s NAV is not calculated. So, the value of the fund’s portfolio may be affected on days when you will not be able to purchase, exchange or redeem fund shares.

Distributions

Federal tax laws require the fund to make distributions to its shareholders in order to qualify for treatment as a regulated investment company. Qualification for treatment as a regulated investment company means that the fund will not be subject to state or federal income tax on amounts distributed. The distributions generally consist of dividends and interest received by the fund, as well as capital gains realized by the fund on the sale of its investment securities.



	Capital gains are increases in the values of capital assets, such as stocks or bonds, from the time the assets are purchased.

The fund generally expects to declare distributions from net income, if any, daily. These distributions are paid on the last day of the month. The fund generally pays distributions from capital gains, if any, once a year in December. The fund may make more frequent distributions, if necessary, to comply with Internal Revenue Code provisions.

You will participate in fund distributions when they are declared, starting the next business day after your purchase is effective. For example, if you purchase shares on a day that a distribution is declared, you will not receive that distribution. If you redeem shares, you will receive any distribution declared on the day you redeem. If you redeem all shares, we will include any distributions received with your redemption proceeds.

Generally, participants in tax-deferred retirement plans reinvest all distributions. For investors investing through taxable accounts, we will reinvest distributions unless you elect to have dividends and/or capital gains sent to another American Century Investments account, to your bank electronically, or to your home address or to another person or address by check.

Taxes

Some of the tax consequences of owning shares of a fund will vary depending on whether you own them through a taxable or tax-deferred account. Distributions by a fund of dividend and interest income, capital gains and other income it has generated through its investment activities will generally be taxable to shareholders who hold shares in a taxable account. Tax consequences also may result when investors sell fund shares after the net asset value has increased or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred account, such as an IRA or employer-sponsored retirement or savings plan, income and capital gains distributions usually will not be subject to current taxation but will accumulate in your account under the plan on a tax-deferred basis. Likewise, moving from one fund to another fund within a plan or tax-deferred account generally will not cause you to be taxed. For information about the tax consequences of making purchases or withdrawals through a tax-deferred account, please consult your plan administrator, your summary plan description or a tax advisor.

Taxable Accounts

If you own fund shares through a taxable account, you may be taxed on your investments if the fund makes distributions or if you sell your fund shares.

Taxability of Distributions

Fund distributions may consist of income, such as dividends and interest earned by the fund from its investments, or capital gains generated by the fund from the sale of its investment securities. Distributions of income are taxed as ordinary income, unless they are designated as qualified dividend income and you meet a minimum required holding period with respect to your shares of the fund, in which case they are taxed at the same rates as long-term capital gains. The fund does not expect a significant portion of its distributions to be derived from qualified dividend income.



	Qualified dividend income is a dividend received by a fund from the stock of a domestic or qualifying foreign corporation, provided that the fund has held the stock for a required holding period and the stock was not on loan at the time of the dividend.

The tax character of any distributions from capital gains is determined by how long the fund held the underlying security that was sold, not by how long you have been invested in the fund, or whether you reinvest your distributions or take them in cash. Short-term (one year or less) capital gains are taxable as ordinary income. Gains on securities held for more than one year are taxed at the lower rates applicable to long-term capital gains.

If the fund’s distributions exceed current and accumulated earnings and profits, such excess will generally be considered a return of capital. A return of capital distribution is generally not subject to tax, but will reduce your cost basis in the fund and result in higher realized capital gains (or lower realized capital losses) upon the sale of fund shares.

For taxable accounts, American Century Investments or your financial intermediary will inform you of the tax character of fund distributions for each calendar year in an annual tax mailing.

If you meet specified income levels, you will also be subject to a 3.8% Medicare contribution tax which is imposed on net investment income, including interest, dividends and capital gains. Distributions also may be subject to state and local taxes. Because everyone’s tax situation is unique, you may want to consult your tax professional about federal, state and local tax consequences.

Taxes on Transactions

Your redemptions — including exchanges to other American Century Investments funds — are subject to capital gains tax. Short-term capital gains are gains on fund shares you held for 12 months or less. Long-term capital gains are gains on fund shares you held for more than 12 months. If your shares decrease in value, their sale or exchange will result in a long-term or short-term capital loss. However, you should note that loss realized upon the sale or exchange of shares held for six months or less will be treated as a long-term capital loss to the extent of any distribution of long-term capital gain to you with respect to those shares. If a loss is realized on the redemption of fund shares, the reinvestment in additional fund shares within 30 days before or after the redemption may be subject to the wash sale rules of the Internal Revenue Code. This may result in a postponement of the recognition of such loss for federal income tax purposes.

If you have not certified to us that your Social Security number or tax identification number is correct and that you are not subject to withholding, we are required to withhold and pay to the IRS the applicable federal withholding tax rate on taxable dividends, capital gains distributions and redemption proceeds.

Buying a Dividend

Purchasing fund shares in a taxable account shortly before a distribution is sometimes known as buying a dividend. In taxable accounts, you must pay income taxes on the distribution whether you reinvest the distribution or take it in cash. In addition, you will have to pay taxes on the distribution whether the value of your investment decreased, increased or remained the same after you bought the fund shares.

The risk in buying a dividend is that the fund’s portfolio may build up taxable income and gains throughout the period covered by a distribution, as income is earned and securities are sold at a profit. The fund distributes the income and gains to you, after subtracting any losses, even if you did not own the shares when the income was earned or the gains occurred.

If you buy a dividend, you incur the full tax liability of the distribution period, but you may not enjoy the full benefit of the income earned or the gains realized in the fund’s portfolio.

Multiple Class Information

The fund offers multiple classes of shares. The classes have different fees, expenses, eligibility requirements and/or minimum investment requirements. Different fees and expenses will affect performance.

Except as described below, all classes of shares of the fund have identical voting, dividend, liquidation and other rights, preferences, terms and conditions. The only differences among the classes are (a) each class may be subject to different expenses specific to that class; (b) each class has a different identifying designation or name; (c) each class has exclusive voting rights with respect to matters solely affecting such class; (d) each class may have different exchange privileges; (e) the I Class may provide for conversion from that class into shares of the Investor Class of the same fund; and (f) the C Class provides for automatic conversion from that class into shares of the A Class of the same fund after 10 years.

Service, Distribution and Administrative Fees

Investment Company Act Rule 12b-1 permits mutual funds that adopt a written plan to pay certain expenses associated with the distribution of their shares out of fund assets. The fund’s A Class, C Class and R Class each have a 12b-1 plan. The plans provide for the fund to pay annual fees of 0.25% for A Class, 1.00% for C Class and 0.50% for R Class to the distributor for distribution and individual shareholder services, including past distribution services. The distributor pays all or a portion of such fees to the financial intermediaries that make the classes available. Because these fees may be used to pay for services that are not related to prospective sales of the fund, each class will continue to make payments under its plan even if it is closed to new investors. Because these fees are paid out of the fund’s assets on an ongoing basis, over time these fees will increase the cost of your investment and may cost you more than paying other types of sales charges. The higher fees for C Class shares may cost you more over time than paying the initial sales charge for A Class shares. For additional information about the plans and their terms, see Multiple Class Structure in the statement of additional information.

Certain financial intermediaries perform recordkeeping and administrative services for their clients that would otherwise be performed by American Century Investments’ transfer agent. In some circumstances, the advisor will pay such service providers a fee for performing those services. Also, the advisor and the fund’s distributor may make payments to intermediaries for various additional services, other expenses and/or the intermediaries’ distribution of the fund out of their profits or other available sources. Such payments may be made for one or more of the following: (1) distribution, which may include expenses incurred by intermediaries for their sales activities with respect to the fund, such as preparing, printing and distributing sales literature and advertising materials and compensating registered representatives or other employees of such financial intermediaries for their sales activities, as well as the opportunity for the fund to be made available by such intermediaries; (2) shareholder services, such as providing individual and custom investment advisory services to clients of the financial intermediaries; and (3) marketing and promotional services, including business planning assistance, educating personnel about the fund, and sponsorship of sales meetings, which may include covering costs of providing speakers, meals and other entertainment. The distributor may pay partnership and/or sponsorship fees to support seminars, conferences, and other programs designed to educate intermediaries about the fund and may cover the expenses associated with attendance at such meetings, including travel costs. The distributor also may pay fees related to obtaining data regarding intermediary or financial advisor activities to assist American Century Investments with sales reporting, business intelligence, and training and education opportunities. These payments and activities are intended to provide an incentive to intermediaries to sell the fund by educating them about the fund and helping defray the costs associated with offering the fund. These payments may create a conflict of interest by influencing the intermediary to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information. The amount of any payments described by this paragraph is determined by the advisor or the distributor, and all such amounts are paid out of their available assets, and not paid by you or the fund. As a result, the total expense ratio of the fund will not be affected by any such payments.

American Century Investments does not pay any fees to financial intermediaries on Y, R6 or G Class shares.

Financial Highlights

Understanding the Financial Highlights

The table on the next page itemizes what contributed to the changes in share price during the most recently ended fiscal period. It also shows the changes in share price for this period in comparison to changes over the last five fiscal years (or a shorter period if the share class is not five years old).

On a per-share basis, the table includes as appropriate


•	share price at the beginning of the period


•	investment income and capital gains or losses


•	distributions of income and capital gains paid to investors


•	share price at the end of the period

The table also includes some key statistics for the period as appropriate


•	Total Return – the overall percentage of return of the fund, assuming the reinvestment of all distributions


•	Expense Ratio – the operating expenses of the fund as a percentage of average net assets


•	Net Income Ratio – the net investment income of the fund as a percentage of average net assets


•	Portfolio Turnover – the percentage of the fund’s investment portfolio that is replaced during the period

The Financial Highlights that follow have been audited by PricewaterhouseCoopers LLP, independent registered public accounting firm. Their Report of Independent Registered Public Accounting Firm and the financial statements are included in the fund’s annual report, which is available upon request.

Emerging Markets Debt Fund



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data										Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:					Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Net Investment Income (Loss)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
Investor Class
2019	$9.79	0.43	0.66	1.09	(0.42)	—	(0.42)	$10.46	11.35%	0.97%	4.24%	75%		$92,647
2018	$10.43	0.35	(0.64)	(0.29)	(0.33)	(0.02)	(0.35)	$9.79	(2.76)%	0.97%	3.52%	85%		$90,831
2017	$10.32	0.35	0.16	0.51	(0.34)	(0.06)	(0.40)	$10.43	5.11%	0.97%	3.39%	154%		$6,634
2016	$9.75	0.36	0.57	0.93	(0.36)	—	(0.36)	$10.32	9.77%	0.97%	3.59%	97%		$3,898
2015⁽³⁾	$9.88	0.11	(0.13)	(0.02)	(0.11)	—	(0.11)	$9.75	(0.22)%	0.97%⁽⁴⁾	3.19%⁽⁴⁾	35%		$1,878
2015⁽⁵⁾	$10.00	0.28	(0.11)	0.17	(0.29)	—	(0.29)	$9.88	1.72%	0.97%⁽⁴⁾	3.18%⁽⁴⁾	46%		$3,312
I Class
2019	$9.79	0.44	0.66	1.10	(0.43)	—	(0.43)	$10.46	11.47%	0.87%	4.34%	75%		$1,932
2018	$10.44	0.34	(0.63)	(0.29)	(0.34)	(0.02)	(0.36)	$9.79	(2.76)%	0.87%	3.62%	85%		$6
2017⁽⁶⁾	$10.30	0.20	0.14	0.34	(0.20)	—	(0.20)	$10.44	3.28%	0.87%⁽⁴⁾	3.38%⁽⁴⁾	154%⁽⁷⁾		$38
Y Class
2019	$9.79	0.45	0.66	1.11	(0.44)	—	(0.44)	$10.46	11.57%	0.77%	4.44%	75%		$11,393
2018	$10.44	0.40	(0.68)	(0.28)	(0.35)	(0.02)	(0.37)	$9.79	(2.67)%	0.77%	3.72%	85%		$3,218
2017⁽⁶⁾	$10.30	0.21	0.13	0.34	(0.20)	—	(0.20)	$10.44	3.33%	0.77%⁽⁴⁾	3.52%⁽⁴⁾	154%⁽⁷⁾		$5
A Class
2019	$9.78	0.40	0.66	1.06	(0.39)	—	(0.39)	$10.45	11.08%	1.22%	3.99%	75%		$316
2018	$10.43	0.28	(0.60)	(0.32)	(0.31)	(0.02)	(0.33)	$9.78	(3.11)%	1.22%	3.27%	85%		$164
2017	$10.32	0.32	0.17	0.49	(0.32)	(0.06)	(0.38)	$10.43	4.84%	1.22%	3.14%	154%		$6,619
2016	$9.74	0.33	0.59	0.92	(0.34)	—	(0.34)	$10.32	9.61%	1.22%	3.34%	97%		$6,282
2015⁽³⁾	$9.87	0.10	(0.13)	(0.03)	(0.10)	—	(0.10)	$9.74	(0.31)%	1.22%⁽⁴⁾	2.94%⁽⁴⁾	35%		$5,671
2015⁽⁵⁾	$10.00	0.27	(0.13)	0.14	(0.27)	—	(0.27)	$9.87	1.45%	1.22%⁽⁴⁾	2.93%⁽⁴⁾	46%		$6,660
C Class
2019	$9.77	0.33	0.66	0.99	(0.32)	—	(0.32)	$10.44	10.26%	1.97%	3.24%	75%		$47
2018	$10.41	0.20	(0.59)	(0.39)	(0.23)	(0.02)	(0.25)	$9.77	(3.74)%	1.97%	2.52%	85%		$32
2017	$10.30	0.25	0.16	0.41	(0.24)	(0.06)	(0.30)	$10.41	4.07%	1.97%	2.39%	154%		$1,144
2016	$9.72	0.26	0.58	0.84	(0.26)	—	(0.26)	$10.30	8.81%	1.97%	2.59%	97%		$1,110
2015⁽³⁾	$9.85	0.07	(0.13)	(0.06)	(0.07)	—	(0.07)	$9.72	(0.57)%	1.97%⁽⁴⁾	2.19%⁽⁴⁾	35%		$1,013
2015⁽⁵⁾	$10.00	0.20	(0.13)	0.07	(0.22)	—	(0.22)	$9.85	0.74%	1.97%⁽⁴⁾	2.18%⁽⁴⁾	46%		$1,019



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data										Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:					Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Net Investment Income (Loss)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
R Class
2019	$9.78	0.38	0.66	1.04	(0.37)	—	(0.37)	$10.45	10.80%	1.47%	3.74%	75%		$88
2018	$10.42	0.26	(0.60)	(0.34)	(0.28)	(0.02)	(0.30)	$9.78	(3.26)%	1.47%	3.02%	85%		$56
2017	$10.31	0.30	0.16	0.46	(0.29)	(0.06)	(0.35)	$10.42	4.58%	1.47%	2.89%	154%		$1,205
2016	$9.73	0.31	0.58	0.89	(0.31)	—	(0.31)	$10.31	9.34%	1.47%	3.09%	97%		$1,120
2015⁽³⁾	$9.86	0.09	(0.13)	(0.04)	(0.09)	—	(0.09)	$9.73	(0.40)%	1.47%⁽⁴⁾	2.69%⁽⁴⁾	35%		$1,009
2015⁽⁵⁾	$10.00	0.24	(0.12)	0.12	(0.26)	—	(0.26)	$9.86	1.18%	1.47%⁽⁴⁾	2.68%⁽⁴⁾	46%		$1,012
R5 Class
2019	$9.79	0.45	0.66	1.11	(0.44)	—	(0.44)	$10.46	11.59%	0.77%	4.44%	75%		$7
2018	$10.43	0.31	(0.57)	(0.26)	(0.36)	(0.02)	(0.38)	$9.79	(2.55)%	0.77%	3.72%	85%		$7
2017	$10.32	0.37	0.16	0.53	(0.36)	(0.06)	(0.42)	$10.43	5.31%	0.77%	3.59%	154%		$5,986
2016	$9.75	0.38	0.57	0.95	(0.38)	—	(0.38)	$10.32	9.99%	0.77%	3.79%	97%		$5,682
2015⁽³⁾	$9.87	0.11	(0.12)	(0.01)	(0.11)	—	(0.11)	$9.75	(0.16)%	0.77%⁽⁴⁾	3.39%⁽⁴⁾	35%		$5,164
2015⁽⁵⁾	$10.00	0.31	(0.13)	0.18	(0.31)	—	(0.31)	$9.87	1.91%	0.77%⁽⁴⁾	3.38%⁽⁴⁾	46%		$6,671
R6 Class
2019	$9.79	0.46	0.66	1.12	(0.45)	—	(0.45)	$10.46	11.62%	0.72%	4.49%	75%		$10,229
2018	$10.44	0.37	(0.64)	(0.27)	(0.36)	(0.02)	(0.38)	$9.79	(2.61)%	0.72%	3.77%	85%		$9,336
2017	$10.33	0.38	0.16	0.54	(0.37)	(0.06)	(0.43)	$10.44	5.37%	0.72%	3.64%	154%		$16,492
2016	$9.75	0.38	0.59	0.97	(0.39)	—	(0.39)	$10.33	10.15%	0.72%	3.84%	97%		$15,465
2015⁽³⁾	$9.88	0.11	(0.12)	(0.01)	(0.12)	—	(0.12)	$9.75	(0.14)%	0.72%⁽⁴⁾	3.44%⁽⁴⁾	35%		$12,290
2015⁽⁵⁾	$10.00	0.32	(0.13)	0.19	(0.31)	—	(0.31)	$9.88	1.96%	0.72%⁽⁴⁾	3.43%⁽⁴⁾	46%		$8,699
G Class
2019	$9.79	0.53	0.66	1.19	(0.52)	—	(0.52)	$10.46	12.41%	0.01%⁽⁸⁾	5.20%⁽⁸⁾	75%		$266,091
2018⁽⁹⁾	$10.40	0.44	(0.62)	(0.18)	(0.41)	(0.02)	(0.43)	$9.79	(1.59)%	0.01%^(4)(10)	4.49%^(4)(10)	85%⁽¹¹⁾		$308,199

Notes to Financial Highlights


(1)	Computed using average shares outstanding throughout the period.


(2)	Total returns are calculated based on the net asset value of the last business day and do not reflect applicable sales charges, if any. Total returns for periods less than one year are not annualized.


(3)	July 1, 2015 through October 31, 2015. The fund's fiscal year end was changed from June 30 to October 31, resulting in a four-month annual reporting period.


(4)	Annualized.


(5)	July 29, 2014 (fund inception) through June 30, 2015.


(6)	April 10, 2017 (commencement of sale) through October 31, 2017.


(7)	Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2017.


(8)	The ratio of operating expenses to average net assets before expense waiver and the ratio of net investment income (loss) to average net assets before expense waiver was 0.72% and 4.49%, respectively.


(9)	November 14, 2017 (commencement of sale) through October 31, 2018.


(10)	The annualized ratio of operating expenses to average net assets before expense waiver and the annualized ratio of net investment income (loss) to average net assets before expense waiver was 0.72% and 3.78%, respectively.


(11)	Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2018.

Appendix A

The information in this Appendix is part of, and incorporated into, the fund’s prospectus.

Financial Intermediary Sales Charge Reduction and Waiver Information

The availability of certain sales charge waivers and discounts will depend on whether you purchase your shares directly from the fund or through a financial intermediary. Intermediaries may have different policies and procedures regarding the availability of front-end sales load waivers or contingent deferred (back-end) sales load (CDSC) waivers, which are set forth below. In all instances, it is the investor’s responsibility to notify the fund or the applicable financial intermediary at the time of purchase of any relationship or other facts qualifying the investor for sales charge waivers or discounts. For waivers and discounts not available through a particular intermediary, shareholders will have to purchase fund shares directly from the fund or through another intermediary to receive these waivers or discounts.

Sales Charge Reductions and Waivers Available through Merrill Lynch

Effective April 10, 2017, shareholders purchasing fund shares through a Merrill Lynch platform or account will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this fund’s prospectus or SAI.

Front-end Sales Load Waivers on A Class Shares available at Merrill Lynch


•	Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan


•	Shares purchased by or through a 529 Plan


•	Shares purchased through a Merrill Lynch affiliated investment advisory program


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch’s platform


•	Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family)


•	Shares exchanged from C Class (i.e. level-load) shares of the same fund in the month of or following the 10-year anniversary of the purchase date


•	Employees and registered representatives of Merrill Lynch or its affiliates and their family members


•	Directors or trustees of the fund, and employees of the fund’s investment advisor or any of its affiliates, as described in this prospectus


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement)

CDSC Waivers on A and C Shares available at Merrill Lynch


•	Death or disability of the shareholder


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus


•	Return of excess contributions from an IRA Account


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70½


•	Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch


•	Shares acquired through a right of reinstatement


•	Shares held in retirement brokerage accounts, that are exchanged for a lower cost share class due to transfer to a fee based account or platform (applicable to A and C shares only)

Front-end load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation & Letters of Intent


•	Breakpoints as described in this prospectus.

•

Rights of Accumulation (ROA) which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser’s household at Merrill Lynch. Eligible fund family assets not held at Merrill Lynch may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets


•	Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable)

A-1

Sales Charge Reductions and Waivers Available through Ameriprise Financial

The following information applies to A Class shares purchases if you have an account with or otherwise purchase fund shares through Ameriprise Financial.

Effective June 1, 2018, shareholders purchasing fund shares through an Ameriprise Financial platform or account will be eligible for the following front-end sales charge waivers and discounts, which may differ from those disclosed elsewhere in this fund’s prospectus or SAI:


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs or SAR-SEPs.


•	Shares purchased through an Ameriprise Financial investment advisory program (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Ameriprise Financial’s platform (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased through reinvestment of distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments family of mutual funds).

•

Shares exchanged from C Class shares of the same fund in the month of or following the 10-year anniversary of the purchase date. To the extent that this prospectus elsewhere provides for a waiver with respect to such shares following a shorter holding period, that waiver will apply to exchanges following such shorter period. To the extent that this prospectus elsewhere provides for a waiver with respect to exchanges of C Class shares for load waived shares, that waiver will also apply to such exchanges.


•	Employees and registered representatives of Ameriprise Financial or its affiliates and their immediate family members.

•

Shares purchased by or through qualified accounts (including IRAs, Coverdell Education Savings Accounts, 401(k)s, 403(b) TSCAs subject to ERISA and defined benefit plans) that are held by a covered family member, defined as an Ameriprise financial advisor and/or the advisor’s spouse, advisor’s lineal ascendant (mother, father, grandmother, grandfather, great grandmother, great grandfather), advisor’s lineal descendant (son, step-son, daughter, step-daughter, grandson, granddaughter, great grandson, great granddaughter) or any spouse of a covered family member who is a lineal descendant.


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e. Rights of Reinstatement).

Sales Charge Reductions and Waivers available through Morgan Stanley Wealth Management

Effective July 1, 2018, shareholders purchasing fund shares through a Morgan Stanley Wealth Management transactional brokerage account will be eligible only for the following front-end sales charge waivers with respect to A Class shares, which may differ from and may be more limited than those disclosed elsewhere in this fund’s prospectus or SAI.


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs, SAR-SEPs or Keogh plans


•	Morgan Stanley employee and employee-related accounts according to Morgan Stanley’s account linking rules


•	Shares purchased through reinvestment of dividends and capital gains distributions when purchasing shares of the same fund


•	Shares purchased through a Morgan Stanley self-directed brokerage account


•	C Class (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to A Class shares of the same fund pursuant to Morgan Stanley Wealth Management’s share class conversion program


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (i) the repurchase occurs within 90 days following the redemption, (ii) the redemption and purchase occur in the same account, and (iii) redeemed shares were subject to a front-end or deferred sales charge.

A-2

Raymond James & Associates, Inc., Raymond James Financial Services & each entity’s affiliates (“Raymond James”)

Effective March 1, 2019, shareholders purchasing fund shares through a Raymond James platform or account, or through an introducing broker-dealer or independent registered investment adviser for which Raymond James provides trade execution, clearance, and/or custody services , will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this fund’s prospectus or SAI.

Front-end sales load waivers on Class A shares available at Raymond James


•	Shares purchased in an investment advisory program.


•	Shares purchased within the same fund family through a systematic reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments fund family).


•	Employees and registered representatives of Raymond James or its affiliates and their family members as designated by Raymond James.


•	Shares purchased from the proceeds of redemptions within the American Century Investments fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement).


•	A shareholder in the fund’s C Class shares will have their shares converted at net asset value to A Class shares (or the appropriate share class) of the fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of Raymond James.

CDSC waivers on A and C Class shares available at Raymond James


•	Death or disability of the shareholder.


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus.


•	Return of excess contributions from an IRA Account.


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations as described in the fund’s prospectus.


•	Shares sold to pay Raymond James fees but only if the transaction is initiated by Raymond James.


•	Shares acquired through a right of reinstatement.

Front-end load discounts available at Raymond James: breakpoints, rights of accumulation , and/or letters of intent


•	Breakpoints as described in this prospectus.

•

Rights of accumulation which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of American Century Investments fund family assets held by accounts within the purchaser’s household at Raymond James. Eligible American Century Investments fund family assets not held at Raymond James may be included in the calculation of rights of accumulation only if the shareholder notifies his or her financial advisor about such assets.


•	Letters of intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Raymond James may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets.

A-3

Where to Find More Information

Annual and Semiannual Reports

Additional information about the fund’s investments is available in the fund’s annual and semiannual reports to shareholders. In the fund’s annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the fund’s performance during its last fiscal year. This prospectus incorporates by reference the Report of Independent Registered Public Accounting Firm and the financial statements included in the fund’s annual report to shareholders dated October 31, 2019 .

Statement of Additional Information (SAI)

The SAI contains a more detailed legal description of the fund’s operations, investment restrictions, policies and practices. The SAI is incorporated by reference into this prospectus. This means that it is legally part of this prospectus, even if you don’t request a copy.

You may obtain a free copy of the SAI, annual reports and semiannual reports, and you may ask questions about the fund or your accounts, online at americancentury.com, by contacting American Century Investments at the addresses or telephone numbers listed below or by contacting your financial intermediary.

The Securities and Exchange Commission (SEC)

Reports and other information about the fund are available on the EDGAR database on the SEC’s website at sec.gov, and copies of this information may be obtained, after paying a duplicating fee, by electronic request at the following email address: publicinfo@sec.gov.

This prospectus shall not constitute an offer to sell securities of the fund in any state, territory, or other jurisdiction where the fund’s shares have not been registered or qualified for sale, unless such registration or qualification is not required, or under any circumstances in which such offer or solicitation would be unlawful.



American Century Investments americancentury.com
Retail Investors P.O. Box 419200 Kansas City, Missouri 64141-6200 1-800-345-2021 or 816-531-5575	Financial Professionals P.O. Box 419385 Kansas City, Missouri 64141-6385 1-800-345-6488

Investment Company Act File No. 811-06441

CL-PRS-92581 2003

March 1, 2020

American Century Investments

Prospectus

Global Bond Fund

Investor Class (AGBVX)

I Class (AGBHX)

Y Class (AGBWX)

A Class (AGBAX)

C Class (AGBTX)

R Class (AGBRX)

R5 Class (AGBNX)

R6 Class (AGBDX)

G Class (AGBGX)



The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Table of Contents



Fund Summary	2
Investment Objective	2
Fees and Expenses	2
Principal Investment Strategies	3
Principal Risks	4
Fund Performance	5
Portfolio Management	6
Purchase and Sale of Fund Shares	6
Tax Information	7
Payments to Broker-Dealers and Other Financial Intermediaries	7
Objectives, Strategies and Risks	8
Management	12
Investing Directly with American Century Investments	14
Investing Through a Financial Intermediary	16
Additional Policies Affecting Your Investment	21
Share Price and Distributions	25
Taxes	27
Multiple Class Information	29
Financial Highlights	30

Appendix A	A-1

Fund Summary

Investment Objective

The fund seeks long-term total return.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for A Class sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in American Century Investments funds. More information about these and other discounts is available from your financial professional and in Calculation of Sales Charges on page 17 of the fund’s prospectus, Appendix A of the fund’s prospectus and Sales Charges in Appendix B of the statement of additional information.



Shareholder Fees (fees paid directly from your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	None	None	None	4.50%	None	None	None	None	None
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of the original offering price or redemption proceeds when redeemed within one year of purchase)	None	None	None	None¹	1.00%	None	None	None	None
Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)	$25	None	None	None	None	None	None	None	None



Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Management Fee	0.83%	0.73%	0.63%	0.83%	0.83%	0.83%	0.63%	0.58%	0.58%
Distribution and Service (12b-1) Fees	None	None	None	0.25%	1.00%	0.50%	None	None	None
Other Expenses	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses	0.84%	0.74%	0.64%	1.09%	1.84%	1.34%	0.64%	0.59%	0.59%
Fee Waiver	None	None	None	None	None	None	None	None	0.58%²
Total Annual Fund Operating Expenses After Fee Waiver	0.84%	0.74%	0.64%	1.09%	1.84%	1.34%	0.64%	0.59%	0.01%

¹Purchases of $1 million or more may be subject to a contingent deferred sales charge of 1.00% if the shares are redeemed within one year of the date of purchase.


²	The advisor has agreed to waive the G Class’s management fee in its entirety. The advisor expects this waiver to remain in effect permanently and cannot terminate it without the approval of the Board of Trustees.

Example



	1 year	3 years	5 years	10 years
Investor Class	$86	$269	$467	$1,037
I Class	$76	$237	$412	$919
Y Class	$66	$205	$357	$799
A Class	$556	$782	$1,024	$1,719
C Class	$187	$580	$996	$2,156
R Class	$137	$425	$735	$1,612
R5 Class	$66	$205	$357	$799
R6 Class	$60	$189	$330	$738
G Class	$1	$3	$6	$13

Portfolio Turnover

Principal Investment Strategies

The fund invests primarily in companies located in developed countries world-wide (including the United States), but may also invest in emerging markets. Under normal market conditions, the fund will invest at least 40% of its assets in foreign investments (unless the portfolio managers deem market conditions unfavorable, in which case the fund would invest at least 30% of its assets in foreign investments). The fund will allocate its assets among at least three different countries (one of which may be the United States).

The fund may invest up to 35% of its assets in high-yield securities. A high-yield security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The advisor expects the fund’s dollar-weighted average maturity to be between two and 12 years.

The fund may invest in U.S. Treasury securities and securities of U.S. government agencies or instrumentalities such as the Government National Mortgage Association (Ginnie Mae), the Federal National Mortgage Association (Fannie Mae), the Federal Home Loan Mortgage Corporation (Freddie Mac), and the Federal Home Loan Bank (FHLB).

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund may use foreign currency exchange contracts to shift its investment exposure from one currency into another, for hedging purposes or to enhance returns. The fund may invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. In certain foreign markets, swaps can also act as substitutes for other less liquid fixed-income instruments. The fund may also invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

The fund may engage in active and frequent trading to achieve its principal investment strategies. This may cause higher transaction costs and may affect performance. It may also result in the realization and distribution of capital gains.

Principal Risks

•


•	Currency Risk – Because the fund may invest in securities denominated in foreign currencies, the fund may be subject to currency risk, meaning that the fund could experience gains or losses based solely on changes in the exchange rate between foreign currencies and the U.S. dollar.

•

Credit Risk – Debt securities, even investment-grade debt securities, are subject to credit risk. Credit risk is the risk that the inability or perceived inability of the issuer to make interest and principal payments will cause the value of the securities to decrease. As a result the fund’s share price could also decrease. Changes in the credit rating of a debt security held by the fund could have a similar effect.

•


•	Prepayment Risk – The fund may invest in debt securities backed by mortgages or other assets. If these underlying assets are prepaid, the fund may benefit less from declining interest rates than funds of similar maturity that invest less heavily in mortgage- and asset-backed securities.

•

Emerging Market Risk – Investing in securities of companies located in emerging market countries generally is riskier than investing in securities of companies located in foreign developed countries. Emerging market countries may have unstable governments and/or economies that are subject to sudden change. These changes may be magnified by the countries’ emergent financial markets, resulting in significant volatility to investments in these countries. These countries also may lack the legal, business and social framework to support securities markets.


•	Single Country Risk – Investing a significant portion of assets in one country or region makes the fund more dependent upon the political and economic circumstances of that particular country or region than a fund that is more widely diversified.

•

LIBOR Transition Risk – The fund may invest in instruments that have variable or floating coupon rates based on the London Interbank Offered Rate (“LIBOR”). LIBOR is a benchmark interest rate intended to be representative of the rate at which certain major international banks lend to one another over short-terms. Due to allegations of manipulation, LIBOR will be phased out by the end of 2021. Uncertainty remains regarding a replacement rate or rates for LIBOR. The transition process may lead to increased volatility or illiquidity in markets for instruments that rely on LIBOR. This could result in a change to the value of such instruments or a change in the cost of temporary borrowing for the fund.

•


•	Counterparty Risk – If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.


•	Market Risk – The risk that the value of securities owned by the fund may go up and down, sometimes rapidly or unpredictably.


•	Principal Loss – At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Fund Performance

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Calendar Year Total Returns

Highest Performance Quarter (1Q 2019): 3.86% Lowest Performance Quarter (2Q 2015): -2.71%



Average Annual Total Returns For the calendar year ended December 31, 2019	1 year	5 year	Since Inception	Inception Date
Investor Class Return Before Taxes	8.41%	3.13%	3.32%	01/31/2012
Return After Taxes on Distributions	7.66%	2.17%	2.06%	01/31/2012
Return After Taxes on Distributions and Sale of Fund Shares	4.98%	1.98%	1.99%	01/31/2012
I Class¹ Return Before Taxes	8.60%	3.27%	3.44%	04/10/2017
Y Class¹ Return Before Taxes	8.60%	3.36%	3.54%	04/10/2017
A Class Return Before Taxes	3.39%	1.95%	2.48%	01/31/2012
C Class Return Before Taxes	7.40%	2.12%	2.30%	01/31/2012
R Class Return Before Taxes	7.91%	2.64%	2.81%	01/31/2012
R5 Class Return Before Taxes	8.72%	3.36%	3.53%	01/31/2012
R6 Class Return Before Taxes	8.77%	3.41%	3.79%	07/26/2013
G Class Return Before Taxes	9.38%	—	4.65%	07/28/2017
Bloomberg Barclays Global Aggregate Bond Index (USD, hedged) (reflects no deduction for fees, expenses or taxes)	8.22%	3.56%	3.76%	01/31/2012


¹	Historical performance for the I and Y Classes prior to their inception is based on the performance of R5 Class shares. I and Y Class performance have been adjusted to reflect differences in expenses between classes, if applicable. Since inception performance for the I and Y Classes is based on the R5 Class inception date.

Portfolio Management

Investment Advisor

American Century Investment Management, Inc.

Portfolio Managers

John A. Lovito, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2009.

Simon Chester, Vice President and Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2010.

Robert V. Gahagan, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 1983.

Abdelak Adjriou, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2016.

Purchase and Sale of Fund Shares

There is no minimum initial investment amount for Y, R5 or R6 Class shares.

Employer-sponsored retirement plans are not eligible to purchase I or Y Class shares.

There is a $50 minimum for subsequent purchases, except that there is no subsequent purchase minimum for financial intermediaries or employer-sponsored retirement plans.

Tax Information

Payments to Broker-Dealers and Other Financial Intermediaries

Objectives, Strategies and Risks

What is the fund’s investment objective?

The fund seeks long-term total return.

What are the fund’s principal investment strategies?

Under normal market conditions, the fund invests at least 80% of its net assets in bonds. For purposes of this fund, the advisor defines bonds as non-money market debt securities which may be payable in U.S. or foreign currencies, and which may include U.S. and foreign corporate bonds and notes, government securities, commercial paper and securities backed by mortgages or other assets. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. The fund generally hedges most of its foreign currency exposure to the U.S. dollar. The fund will normally limit its foreign currency exposure (from non-U.S. dollar-denominated securities or currencies) to 30% of its total assets.

The fund’s assets will be invested primarily in debt securities of issuers located in developed countries world-wide (including the United States). Under normal market conditions, the fund will invest at least 40% of its assets in foreign investments (unless the portfolio managers deem market conditions unfavorable, in which case the fund would invest at least 30% of its assets in foreign investments). The fund will allocate its assets among at least three different countries (one of which may be the United States).

The fund may invest in emerging markets securities. The fund considers a security to be an emerging markets security if its issuer is located outside the following developed countries list, which is subject to change: Australia, Austria, Belgium, Bermuda, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Japan, Luxembourg, the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the United States. In determining an issuer’s location, the portfolio managers may consider various factors including where the company is headquartered, where the company’s principal operations are located, where the company’s revenues are derived, where the principal trading market is located and the country in which the company was legally organized. The weight given to each of these factors will vary depending on the circumstances in a given case.

The weighted average maturity of the fund is expected to be between two and 12 years.



	Weighted average maturity (WAM) is a method for comparing portfolios of bonds by calculating the average time until full maturity weighted by the market value of the principal amount to be paid. A fund that contains a large proportion of bonds with significant periods of time remaining on their maturity terms will have a longer WAM, while the WAM will be shorter for a fund that contains more bonds close to maturity.

The fund may invest in securities issued or guaranteed by the U.S. Treasury and certain U.S. government agencies or instrumentalities such as the Government National Mortgage Association (Ginnie Mae). Ginnie Mae is supported by the full faith and credit of the U.S. government. The fund may also invest in securities issued or guaranteed by other U.S. government agencies or instrumentalities, such as the Federal National Mortgage Association (Fannie Mae), the Federal Home Loan Mortgage Corporation (Freddie Mac), and the Federal Home Loan Bank (FHLB), which are not guaranteed by the U.S. Treasury or supported by the full faith and credit of the U.S. government. However, they are authorized to borrow from the U.S. Treasury to meet their obligations.

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund may invest in foreign currency exchange contracts to shift its investment exposure from one currency into another, for hedging purposes or to enhance returns. The fund may invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. In certain foreign markets, swaps can also act as substitutes for other less liquid fixed-income instruments. The fund may invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

The fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies. A higher portfolio turnover rate may indicate higher transaction costs and may affect fund performance. Higher portfolio turnover also may result in the realization and distribution of capital gains, including short-term capital gains.

The portfolio managers decide which debt securities to buy and sell by, among other things,


•	identifying debt securities that satisfy the fund’s credit quality standards


•	determining whether to alter the fund’s geographic or currency exposure


•	determining which debt securities help the fund meet its maturity requirements


•	assessing current and anticipated interest rates


•	evaluating current economic conditions and the risk of inflation


•	evaluating special features of the debt securities that may make them more or less attractive to alternatives

A description of the policies and procedures with respect to the disclosure of the fund’s portfolio securities is available in the statement of additional information.

What are the principal risks of investing in the fund?

When interest rates change, the fund’s share value will be affected. Generally, when interest rates rise, the fund’s share value will decline. The opposite is true when interest rates decline. The degree to which interest rate changes affect the fund’s performance varies and is related to the weighted average maturity of the fund. For example, when interest rates rise, you can expect the share value of a long-term bond fund to fall more than that of a short-term bond fund. When rates fall, the opposite is true. The fund’s investments are designed to reduce this risk. Interest rate risk, however, is generally higher for the fund than for funds that have shorter-weighted average maturities, such as money market and short-term bond funds. The fund will also be exposed to interest rate risk outside of the U.S. where interest rate trends may differ from those in the U.S. A period of rising interest rates may negatively affect the fund’s performance.

Most of the securities purchased by the fund are quality debt securities at the time of purchase. The fund, however, may invest part of its assets in securities rated in the lowest investment-grade category (e.g., BBB), and up to 35% of its assets in high-yield debt securities, which are rated in the fifth category (e.g., BB) or below. As a result, the fund may have increased credit risk. Although their securities are considered investment-grade, issuers of BBB-rated securities (and securities of similar quality) are more likely to have problems making interest and principal payments than issuers of higher-rated securities. Issuers of securities rated BB or below (and securities of similar quality) are even more vulnerable to real or perceived economic changes (such as an economic downturn or a prolonged period of rising interest rates), political changes or adverse developments specific to the issuer. In addition, lower-rated securities may be unsecured or subordinated to other obligations of the issuer. These factors may be more likely to cause an issuer of low-quality debt securities to default on its obligation to pay the interest and principal due under its securities.

The fund may also be subject to liquidity risk. The chance that a fund will have difficulty selling its debt securities is called liquidity risk. During periods of market turbulence or unusually low trading activity, in order to meet redemptions it may be necessary for the fund to sell securities at prices that could have an adverse effect on the fund’s price. The market for lower-quality debt securities is generally even less liquid than the market for higher-quality securities. Adverse publicity and investor perceptions, as well as new and proposed laws, also may have a greater negative impact on the market for lower-quality securities. Changing regulatory and market conditions, including increases in interest rates and credit spreads, may adversely affect the liquidity of the fund’s investments. Changing regulatory and market conditions, including increases in interest rates and credit spreads, may adversely affect the liquidity of the fund’s investments. In addition, when the market for certain investments is illiquid, the fund may be unable to achieve its desired level of exposure to a certain sector. Illiquid securities may be difficult to value.

The fund may invest in debt securities backed by mortgages or assets such as auto loan, home equity loan or student loan receivables. These underlying obligations may be prepaid, as when a homeowner refinances a mortgage to take advantage of declining interest rates. If so, the fund must reinvest prepayments at current rates, which may be less than the rate of the prepaid mortgage. Because of this prepayment risk, the fund may benefit less from declining interest rates than funds of similar maturity that invest less heavily in mortgage- and asset-backed securities.

Investing in securities of companies located in emerging market countries generally is also riskier than investing in securities of companies located in foreign developed countries. Emerging market countries may have unstable governments and/or economies that are subject to sudden change. These changes may be magnified by the countries’ emergent financial markets, resulting in significant volatility to investments in these countries. These countries also may lack the legal, business and social framework to support securities markets.

Options are subject to the risk that the underlying security or asset does not rise sufficiently above the exercise price to cover the premium and transaction costs.

The fund may invest in instruments that have variable or floating coupon rates based on the London Interbank Offered Rate (“LIBOR”). LIBOR is a benchmark interest rate intended to be representative of the rate at which certain major international banks lend to one another over short-terms. Due to allegations of manipulation, LIBOR will be phased out by the end of 2021. Uncertainty remains regarding a replacement rate or rates for LIBOR. The transition process may lead to increased volatility or illiquidity in markets for instruments that rely on LIBOR. This could result in a change to the value of such instruments or a change in the cost of temporary borrowing for the fund.

If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.

Management

Who manages the fund?

The Board of Trustees, investment advisor and fund management team play key roles in the management of the fund.

The Board of Trustees

The Investment Advisor



Management Fees Paid by the Fund to the Advisor as a Percentage of Average Net Assets for the Fiscal Year Ended October 31, 2019	Investor Class	I Class	Y Class	A Class	C Class	R Class	R5 Class	R6 Class	G Class
Global Bond	0.83%	0.73%	0.63%	0.83%	0.83%	0.83%	0.63%	0.58%	0.00%

The Fund Management Team

The individuals listed below are jointly and primarily responsible for the day-to-day management of the fund described in this prospectus.

John A. Lovito

Simon Chester

Mr. Chester, Vice President and Portfolio Manager, has served on teams managing fixed-income investments since joining the advisor in 2010. He has a bachelor’s degree in commerce from the University of South Africa.

Robert V. Gahagan (Global Fixed Income Investment Committee Representative )

Mr. Gahagan, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments since joining the advisor in 1983. He has a bachelor’s degree in economics and an MBA from the University of Missouri – Kansas City.

Abdelak Adjriou

Mr. Adjriou, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments since joining the advisor in 2016. Prior to joining American Century Investments, he was an emerging market fixed income, global bond and European fund manager for HSBC Global Asset Management. He has an engineering degree and a master’s degree in computer science from the Ecole Superieure en Sciences Informatiques (ESSI) (France) and a master’s in random modeling calculus from the Universite Paris VI - Jussieu.

Fundamental Investment Policies

Shareholders must approve any change to the fundamental investment policies contained in the statement of additional information, as well as any change to the investment objective of the fund. The Board of Trustees and/or the advisor may change any other policies or investment strategies described in this prospectus or otherwise used in the operation of the fund at any time, subject to applicable notice provisions.

Investing Directly with American Century Investments

Services Automatically Available to You

Account Maintenance Fee



	Personal accounts include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts, IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Investments brokerage accounts, you are currently not subject to this fee, but you may be subject to other fees.

Wire Purchases


•	American Century Investments bank information: Commerce Bank N.A., Routing No. 101000019, Account No. 2804918


•	Your American Century Investments account number and fund name


•	Your name


•	The contribution year (for IRAs only)


•	Dollar amount

New Investors: To make a wire purchase into a new account, please complete an application or call us prior to wiring money.

Ways to Manage Your Account

ONLINE

americancentury.com

Exchange shares: Exchange shares from another American Century Investments account with an identical registration.

Make additional investments: Make an additional investment into an established American Century Investments account. If we do not have your bank information, you can add it.

Sell shares*: Redeem shares and choose whether the proceeds are electronically transferred to your authorized bank account or sent by check to your address of record.

* Online redemptions up to $25,000 per day per account.

IN PERSON

If you prefer to handle your transactions in person, visit one of our Investor Centers and a representative can help you open an account, make additional investments, and sell or exchange shares.


•	4500 Main Street, Kansas City, MO — 8 a.m. to 5 p.m., Monday – Friday


•	4917 Town Center Drive, Leawood, KS — 8 a.m. to 5 p.m., Monday – Friday; 8 a.m. to noon, Saturday


•	1665 Charleston Road, Mountain View, CA — 8 a.m. to 5 p.m., Monday – Friday

BY TELEPHONE

Investor Services Representative: 1-800-345-2021

Business, Not-For-Profit and Employer-Sponsored Retirement Plans: 1-800-345-3533

Automated Information Line: 1-800-345-8765

Open an account: If you are a current investor, you can open an account by exchanging shares from another American Century Investments account with an identical registration.

Exchange shares: Call or use our Automated Information Line (available only to Investor Class shareholders).

Sell shares: Call or use our Automated Information Line. The Automated Information Line redemptions are up to $25,000 per day per account and are available for Investor Class shareholders only.

BY MAIL OR FAX

Mail Address: P.O. Box 419200, Kansas City, MO 64141-6200 — Fax: 1-888-327-1998

Open an account: Send a signed, completed application and check or money order payable to American Century Investments.

Exchange shares: Send written instructions to exchange your shares from one American Century Investments account to another with an identical registration.

Sell shares: Send written instructions or a redemption form to sell shares. Call a Service Representative to request a form.

Automatically

Open an account: Not available.

Exchange shares: Send written instructions to set up an automatic exchange of your shares from one American Century Investments account to another with an identical registration.

Make additional investments: With the automatic investment service, you can purchase shares on a regular basis. You must invest at least $50 per month per account.

Sell shares: You may sell shares automatically by establishing a systematic redemption plan.

See Additional Policies Affecting Your Investment for more information about investing with us.

Investing Through a Financial Intermediary

The fund may be purchased by participants in employer-sponsored retirement plans or through financial intermediaries that provide various administrative and distribution services.



	Financial intermediaries include banks, broker-dealers, insurance companies, plan sponsors and financial professionals.

Investor Class

I Class

I Class shares are available for purchase without sales charges or commissions by endowments, foundations, large institutional investors and other financial intermediaries.

Y Class

A Class

C Class

R Class

R5 Class

R6 Class

Calculation of Sales Charges

The information regarding sales charges provided herein is included free of charge and in a clear and prominent format at americancentury.com in the Investors Using Advisors and Investment Professionals portions of the website. From the descriptions of the Share Classes, hyperlinks will take you directly to this disclosure.

A Class



Purchase Amount	Sales Charge as a % of Offering Price	Sales Charge as a % of Net Amount Invested	Dealer Commission as a % of Offering Price
Less than $100,000	4.50%	4.71%	4.00%
$100,000 - $249,999	3.50%	3.63%	3.00%
$250,000 - $499,999	2.50%	2.56%	2.00%
$500,000 - $999,999	2.00%	2.04%	1.75%
$1,000,000 - $3,999,999	0.00%	0.00%	0.75%
$4,000,000 - $9,999,999	0.00%	0.00%	0.50%
$10,000,000 or more	0.00%	0.00%	0.25%

Reductions and Waivers of Sales Charges for A Class


•	Certain trust accounts


•	Solely controlled business accounts


•	Single-participant retirement plans


•	Endowments or foundations established and controlled by you or an immediate family member

Concurrent Purchases. You may combine simultaneous purchases in any share class of any American Century Investments fund to qualify for a reduced A Class sales charge.

Waivers for Certain Investors. The sales charge on A Class shares may be waived for:


•	Purchases by registered representatives and other employees of certain financial intermediaries (and their immediate family members, which includes their spouse or domestic partner and children, step-children, parents or step-parents of them, their spouse or domestic partner) having selling agreements with the advisor or distributor


•	Broker-dealer sponsored wrap program accounts and/or fee-based accounts maintained for clients of certain financial intermediaries who have entered into selling agreements with American Century Investments


•	Purchases in accounts of financial intermediaries that have entered into a selling agreement with American Century Investments that allows for the waiver of the sales charge in brokerage accounts that may or may not charge a transaction fee


•	Current officers, directors and employees of American Century Investments

•


•	Purchases of additional shares in accounts that held shares of an Advisor Class fund that was renamed A Class on either September 4, 2007, December 3, 2007 or March 1, 2010. However, if you close your account or if you transfer your account to another financial intermediary, future purchases of A Class shares of a fund may not receive a sales charge waiver.

C Class

Calculation of Contingent Deferred Sales Charge (CDSC)

CDSC Waivers

Any applicable CDSC for A or C Classes may be waived in the following cases:


•	redemptions through systematic withdrawal plans not exceeding annually 12% of the lesser of the original purchase cost or current market value


•	redemptions through employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.


•	distributions from IRAs due to attainment of age 59½ for A and C Class shares


•	required minimum distributions from retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations


•	tax-free returns of excess contributions to IRAs


•	redemptions due to death or post-purchase disability


•	exchanges, unless the shares acquired by exchange are redeemed within the original CDSC period


•	IRA Rollovers from any American Century Investments fund held in an employer-sponsored retirement plan, for A Class shares only


•	if no dealer commission was paid to the financial intermediary on the purchase for any other reason

Reinstatement Privilege

Employer-Sponsored Retirement Plans

Exchanging Shares

You may exchange shares of the fund for shares of the same class of another American Century Investments fund without a sales charge if you meet the following criteria:


•	The exchange is for a minimum of $100


•	For an exchange that opens a new account, the amount of the exchange must meet or exceed the minimum account size requirement for the fund receiving the exchange

Moving Between Share Classes and Accounts

Buying and Selling Shares Through a Financial Intermediary

Your ability to purchase, exchange, redeem and transfer shares will be affected by the policies of the financial intermediary through which you do business. Some policy differences may include


•	minimum investment requirements


•	exchange policies


•	fund choices


•	cutoff time for investments


•	trading restrictions

See Additional Policies Affecting Your Investment for more information about investing with us.

Additional Policies Affecting Your Investment

Eligibility for Investor Class Shares


•	self-directed accounts on transaction-based platforms that may or may not charge a transaction fee


•	employer-sponsored retirement plans


•	broker-dealer sponsored fee-based wrap programs or other fee-based advisory accounts


•	insurance products and bank/trust products where fees are being charged

Minimum Initial Investment Amounts for Investor, A, C and R Classes



Broker-dealer sponsored wrap program accounts and/or fee-based advisory accounts	No minimum
Coverdell Education Savings Account (CESA)	$2,000¹
Employer-sponsored retirement plans²	No minimum


¹	The minimum initial investment for shareholders investing through financial intermediaries is $250. Financial intermediaries may have different minimums for their clients.


²	For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Subsequent Purchases

Eligibility for I Class Shares

Minimum Initial Investment Amounts for I Class

American Century Investments may permit an intermediary to waive the initial minimum per shareholder as provided in Buying and Selling Fund Shares in the statement of additional information.

Eligibility for Y Class Shares

Minimum Initial Investment Amounts for Y Class

There is no minimum initial investment amount or subsequent investment amount for Y Class shares, but financial intermediaries may require different investment minimums.

Eligibility for R5 and R6 Class Shares

The fund’s R5 and R6 Class shares are generally available only through employer-sponsored retirement plans where a financial intermediary provides retirement recordkeeping services to plan participants. To be eligible, plan level or omnibus accounts must be held on the books of the fund. R6 Class shares also are available to funds of funds advised by American Century and unaffiliated funds of funds sold primarily to the employer-sponsored retirement plan market.

Minimum Initial Investment Amounts for R5 and R6 Classes

Eligibility and Minimum Initial Investment Amounts for G Class

Redemptions

Special Requirements for Large Redemptions

Redemption of Shares in Accounts Below Minimum

Small Distributions and Uncashed Distribution Checks

Signature Guarantees

A signature guarantee — which is different from a notarized signature — is a warranty that the signature presented is genuine. We may require a signature guarantee for the following transactions.


•	Your redemption or distribution check or automatic redemption is made payable to someone other than the account owners;


•	Your redemption proceeds or distribution amount is sent by EFT (ACH or wire) to a destination other than your personal bank account;


•	You are transferring ownership of an account over $100,000;


•	You change your address and request a redemption over $100,000 within seven days;


•	You request proceeds from redemptions, dividends, or distributions be sent to an address or financial institution differing from those on record; or


•	You make a redemption or other transaction request via telephone, and we are unable to verify your identity.

We reserve the right to require a signature guarantee for other transactions, or we may employ other security measures, such as signature comparison or notarized signature, at our discretion.

Canceling a Transaction

Frequent Trading Practices


•	within seven days of the purchase; or


•	within 30 days of the purchase, if it happens more than once per year.

The frequent trading limitations do not apply to the following types of transactions:


•	purchases of shares through reinvested distributions (dividends and capital gains);


•	redemption of shares to pay fund or account fees;


•	CheckWriting redemptions;


•	redemptions requested following the death of a registered shareholder;


•	transactions through automatic purchase or redemption plans;


•	transfers and re-registrations of shares within the same fund;


•	shares exchanged from one share class to another within the same fund;


•	transactions by 529 college savings plans and funds of funds (however shareholders of American Century’s funds of funds are subject to the limitations); and


•	reallocation or rebalancing transactions in broker-dealer sponsored fee-based wrap and advisory programs.

Your Responsibility for Unauthorized Transactions

A Note About Mailings to Shareholders

Right to Change Policies

Share Price and Distributions

Share Price



	The net asset value, or NAV, of each class of the fund is the current value of the class’s assets, minus any liabilities, divided by the number of shares of the class outstanding.


•	if, after the close of the foreign exchange on which a portfolio security is principally traded, but before the close of the NYSE, an event occurs that may materially affect the value of the security;


•	a debt security has been declared in default; or


•	trading in a security has been halted during the trading day.

Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates at the time the fund’s NAV is determined.

Distributions

Federal tax laws require the fund to make distributions to its shareholders in order to qualify as a regulated investment company. Qualification as a regulated investment company means that the fund should not be subject to state or federal income tax on amounts distributed. The distributions generally consist of dividends and interest received by the fund, as well as capital gains realized by the fund on the sale of its investment securities.



	Capital gains are increases in the values of capital assets, such as stocks or bonds, from the time the assets are purchased.

The fund generally expects to pay distributions of substantially all of its income, if any, quarterly, but may pay less frequently. The fund generally pays distributions from capital gains, if any, once a year in December. The fund may make more frequent distributions, if necessary, to comply with Internal Revenue Code provisions.

Taxes

Tax-Deferred Accounts

Taxable Accounts

If you own fund shares through a taxable account, you may be taxed on your investments if the fund makes distributions or if you sell your fund shares.

Taxability of Distributions



	Qualified dividend income is a dividend received by a fund from the stock of a domestic or qualifying foreign corporation, provided that the fund has held the stock for a required holding period and the stock was not on loan at the time of the dividend.

For taxable accounts, American Century Investments or your financial intermediary will inform you of the tax character of fund distributions for each calendar year in an annual tax mailing.

Taxes on Transactions

Buying a Dividend

If you buy a dividend, you incur the full tax liability of the distribution period, but you may not enjoy the full benefit of the income earned or the gains realized in the fund’s portfolio.

Multiple Class Information

Service, Distribution and Administrative Fees

American Century Investments does not pay any fees to financial intermediaries on Y, R6 or G Class shares.

Financial Highlights

Understanding the Financial Highlights

On a per-share basis, the table includes as appropriate


•	share price at the beginning of the period


•	investment income and capital gains or losses


•	distributions of income and capital gains paid to investors


•	share price at the end of the period

The table also includes some key statistics for the period as appropriate


•	Total Return – the overall percentage of return of the fund, assuming the reinvestment of all distributions


•	Expense Ratio – the operating expenses of the fund as a percentage of average net assets


•	Net Income Ratio – the net investment income of the fund as a percentage of average net assets


•	Portfolio Turnover – the percentage of the fund’s investment portfolio that is replaced during the period

Global Bond Fund



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data										Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:					Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Operating Expenses (before expense waiver)	Net Investment Income (Loss)	Net Investment Income (Loss) (before expense waiver)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
Investor Class
2019	$10.03	0.21	0.78	0.99	(0.58)	—	(0.58)	$10.44	10.36%	0.84%	0.84%	2.10%	2.10%	46%		$277,044
2018	$10.36	0.23	(0.36)	(0.13)	(0.17)	(0.03)	(0.20)	$10.03	(1.33)%	0.84%	0.93%	2.26%	2.17%	78%		$299,230
2017	$10.28	0.13	0.09	0.22	(0.11)	(0.03)	(0.14)	$10.36	2.23%	0.84%	0.96%	1.32%	1.20%	130%		$294,535
2016	$9.86	0.12	0.34	0.46	(0.04)	—	(0.04)	$10.28	4.72%	0.84%	0.96%	1.18%	1.06%	106%		$263,312
2015⁽³⁾	$9.71	0.04	0.11	0.15	—	—	—	$9.86	1.54%	0.87%⁽⁴⁾	0.96%⁽⁴⁾	1.08%⁽⁴⁾	0.99%⁽⁴⁾	37%		$224,271
2015	$9.93	0.08	0.14⁽⁵⁾	0.22	(0.44)	—	(0.44)	$9.71	2.18%	0.95%	0.95%	0.73%	0.73%	114%		$219,606
I Class
2019	$10.06	0.22	0.78	1.00	(0.59)	—	(0.59)	$10.47	10.44%	0.74%	0.74%	2.20%	2.20%	46%		$16,830
2018	$10.38	0.24	(0.35)	(0.11)	(0.18)	(0.03)	(0.21)	$10.06	(1.16)%	0.74%	0.83%	2.36%	2.27%	78%		$10,569
2017⁽⁶⁾	$10.14	0.09	0.15	0.24	—	—	—	$10.38	2.37%	0.74%⁽⁴⁾	0.86%⁽⁴⁾	1.51%⁽⁴⁾	1.39%⁽⁴⁾	130%⁽⁷⁾		$11,856
Y Class
2019	$10.07	0.22	0.80	1.02	(0.60)	—	(0.60)	$10.49	10.65%	0.64%	0.64%	2.30%	2.30%	46%		$29,035
2018	$10.39	0.27	(0.38)	(0.11)	(0.18)	(0.03)	(0.21)	$10.07	(1.09)%	0.64%	0.73%	2.46%	2.37%	78%		$7,891
2017⁽⁶⁾	$10.14	0.09	0.16	0.25	—	—	—	$10.39	2.47%	0.64%⁽⁴⁾	0.76%⁽⁴⁾	1.59%⁽⁴⁾	1.47%⁽⁴⁾	130%⁽⁷⁾		$5
A Class
2019	$9.98	0.18	0.78	0.96	(0.55)	—	(0.55)	$10.39	10.12%	1.09%	1.09%	1.85%	1.85%	46%		$1,941
2018	$10.31	0.20	(0.36)	(0.16)	(0.14)	(0.03)	(0.17)	$9.98	(1.59)%	1.09%	1.18%	2.01%	1.92%	78%		$1,753
2017	$10.24	0.10	0.09	0.19	(0.09)	(0.03)	(0.12)	$10.31	1.88%	1.09%	1.21%	1.07%	0.95%	130%		$2,157
2016	$9.83	0.09	0.36	0.45	(0.04)	—	(0.04)	$10.24	4.55%	1.09%	1.21%	0.93%	0.81%	106%		$9,284
2015⁽³⁾	$9.69	0.03	0.11	0.14	—	—	—	$9.83	1.44%	1.12%⁽⁴⁾	1.21%⁽⁴⁾	0.83%⁽⁴⁾	0.74%⁽⁴⁾	37%		$5,506
2015	$9.91	0.13	0.06⁽⁵⁾	0.19	(0.41)	—	(0.41)	$9.69	1.93%	1.20%	1.20%	0.48%	0.48%	114%		$3,033



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data										Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:					Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Operating Expenses (before expense waiver)	Net Investment Income (Loss)	Net Investment Income (Loss) (before expense waiver)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
C Class
2019	$9.85	0.11	0.76	0.87	(0.47)	—	(0.47)	$10.25	9.27%	1.84%	1.84%	1.10%	1.10%	46%		$1,030
2018	$10.17	0.12	(0.34)	(0.22)	(0.07)	(0.03)	(0.10)	$9.85	(2.27)%	1.84%	1.93%	1.26%	1.17%	78%		$1,196
2017	$10.10	0.03	0.08	0.11	(0.01)	(0.03)	(0.04)	$10.17	1.13%	1.84%	1.96%	0.32%	0.20%	130%		$1,824
2016	$9.75	0.02	0.34	0.36	(0.01)	—	(0.01)	$10.10	3.72%	1.84%	1.96%	0.18%	0.06%	106%		$4,646
2015⁽³⁾	$9.64	—⁽⁸⁾	0.11	0.11	—	—	—	$9.75	1.14%	1.87%⁽⁴⁾	1.96%⁽⁴⁾	0.08%⁽⁴⁾	(0.01)%⁽⁴⁾	37%		$549
2015	$9.85	0.07	0.06⁽⁵⁾	0.13	(0.34)	—	(0.34)	$9.64	1.26%	1.95%	1.95%	(0.27)%	(0.27)%	114%		$629
R Class
2019	$9.94	0.15	0.77	0.92	(0.52)	—	(0.52)	$10.34	9.77%	1.34%	1.34%	1.60%	1.60%	46%		$165
2018	$10.26	0.17	(0.34)	(0.17)	(0.12)	(0.03)	(0.15)	$9.94	(1.75)%	1.34%	1.43%	1.76%	1.67%	78%		$97
2017	$10.19	0.09	0.07	0.16	(0.06)	(0.03)	(0.09)	$10.26	1.63%	1.34%	1.46%	0.82%	0.70%	130%		$146
2016	$9.80	0.07	0.35	0.42	(0.03)	—	(0.03)	$10.19	4.28%	1.34%	1.46%	0.68%	0.56%	106%		$48
2015⁽³⁾	$9.67	0.02	0.11	0.13	—	—	—	$9.80	1.34%	1.37%⁽⁴⁾	1.46%⁽⁴⁾	0.58%⁽⁴⁾	0.49%⁽⁴⁾	37%		$25
2015	$9.89	0.12	0.05⁽⁵⁾	0.17	(0.39)	—	(0.39)	$9.67	1.67%	1.45%	1.45%	0.23%	0.23%	114%		$25
R5 Class
2019	$10.06	0.23	0.78	1.01	(0.60)	—	(0.60)	$10.47	10.55%	0.64%	0.64%	2.30%	2.30%	46%		$20,582
2018	$10.39	0.25	(0.36)	(0.11)	(0.19)	(0.03)	(0.22)	$10.06	(1.13)%	0.64%	0.73%	2.46%	2.37%	78%		$28,832
2017	$10.31	0.15	0.10	0.25	(0.14)	(0.03)	(0.17)	$10.39	2.43%	0.64%	0.76%	1.52%	1.40%	130%		$32,206
2016	$9.87	0.14	0.35	0.49	(0.05)	—	(0.05)	$10.31	4.98%	0.64%	0.76%	1.38%	1.26%	106%		$833,757
2015⁽³⁾	$9.72	0.04	0.12	0.16	(0.01)	—	(0.01)	$9.87	1.61%	0.67%⁽⁴⁾	0.76%⁽⁴⁾	1.28%⁽⁴⁾	1.19%⁽⁴⁾	37%		$720,700
2015	$9.95	0.09	0.14⁽⁵⁾	0.23	(0.46)	—	(0.46)	$9.72	2.28%	0.75%	0.75%	0.93%	0.93%	114%		$728,768
R6 Class
2019	$10.06	0.22	0.79	1.01	(0.60)	—	(0.60)	$10.47	10.62%	0.59%	0.59%	2.35%	2.35%	46%		$7,231
2018	$10.39	0.25	(0.36)	(0.11)	(0.19)	(0.03)	(0.22)	$10.06	(1.08)%	0.59%	0.68%	2.51%	2.42%	78%		$1,015
2017	$10.32	0.16	0.08	0.24	(0.14)	(0.03)	(0.17)	$10.39	2.38%	0.59%	0.71%	1.57%	1.45%	130%		$1,489
2016	$9.87	0.14	0.36	0.50	(0.05)	—	(0.05)	$10.32	5.10%	0.59%	0.71%	1.43%	1.31%	106%		$94,808
2015⁽³⁾	$9.72	0.04	0.12	0.16	(0.01)	—	(0.01)	$9.87	1.64%	0.62%⁽⁴⁾	0.71%⁽⁴⁾	1.33%⁽⁴⁾	1.24%⁽⁴⁾	37%		$56,798
2015	$9.95	0.09	0.14⁽⁵⁾	0.23	(0.46)	—	(0.46)	$9.72	2.34%	0.70%	0.70%	0.98%	0.98%	114%		$53,780



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data										Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:					Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Operating Expenses (before expense waiver)	Net Investment Income (Loss)	Net Investment Income (Loss) (before expense waiver)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
G Class
2019	$10.13	0.30	0.77	1.07	(0.66)	—	(0.66)	$10.54	11.21%	0.01%	0.59%	2.93%	2.35%	46%		$970,268
2018	$10.41	0.32	(0.37)	(0.05)	(0.20)	(0.03)	(0.23)	$10.13	(0.49)%	0.01%	0.68%	3.09%	2.42%	78%		$1,083,103
2017⁽⁹⁾	$10.29	0.06	0.06	0.12	—	—	—	$10.41	1.17%	0.01%⁽⁴⁾	0.71%⁽⁴⁾	2.27%⁽⁴⁾	1.57%⁽⁴⁾	130%⁽⁷⁾		$1,007,151



Notes to Financial Highlights


(1)	Computed using average shares outstanding throughout the period.


(2)	Total returns are calculated based on the net asset value of the last business day and do not reflect applicable sales charges, if any. Total returns for periods less than one year are not annualized.


(3)	July 1, 2015 through October 31, 2015. The fund's fiscal year end was changed from June 30 to October 31, resulting in a four-month annual reporting period. For the years before October 31, 2015, the fund's fiscal year end was June 30.


(4)	Annualized.


(5)	Per-share amount was not in accord with the net realized and unrealized gain (loss) for the period because of the timing of transactions in shares of the fund and the amount and timing of per-share net realized and unrealized gain (loss) on such shares.


(6)	April 10, 2017 (commencement of sale) through October 31, 2017.


(7)	Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2017.


(8)	Per-share amount was less than $0.005.


(9)	July 28, 2017 (commencement of sale) through October 31, 2017.

Appendix A

The information in this Appendix is part of, and incorporated into, the fund’s prospectus.

Financial Intermediary Sales Charge Reduction and Waiver Information

Sales Charge Reductions and Waivers Available through Merrill Lynch

Front-end Sales Load Waivers on A Class Shares available at Merrill Lynch


•	Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan


•	Shares purchased by or through a 529 Plan


•	Shares purchased through a Merrill Lynch affiliated investment advisory program


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch’s platform


•	Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family)


•	Shares exchanged from C Class (i.e. level-load) shares of the same fund in the month of or following the 10-year anniversary of the purchase date


•	Employees and registered representatives of Merrill Lynch or its affiliates and their family members


•	Directors or trustees of the fund, and employees of the fund’s investment advisor or any of its affiliates, as described in this prospectus


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement)

CDSC Waivers on A and C Shares available at Merrill Lynch


•	Death or disability of the shareholder


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus


•	Return of excess contributions from an IRA Account


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70½


•	Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch


•	Shares acquired through a right of reinstatement


•	Shares held in retirement brokerage accounts, that are exchanged for a lower cost share class due to transfer to a fee based account or platform (applicable to A and C shares only)

Front-end load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation & Letters of Intent


•	Breakpoints as described in this prospectus.

•


•	Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable)

A-1

Sales Charge Reductions and Waivers Available through Ameriprise Financial

The following information applies to A Class shares purchases if you have an account with or otherwise purchase fund shares through Ameriprise Financial.


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs or SAR-SEPs.


•	Shares purchased through an Ameriprise Financial investment advisory program (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Ameriprise Financial’s platform (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased through reinvestment of distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments family of mutual funds).

•


•	Employees and registered representatives of Ameriprise Financial or its affiliates and their immediate family members.

•


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e. Rights of Reinstatement).

Sales Charge Reductions and Waivers available through Morgan Stanley Wealth Management


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs, SAR-SEPs or Keogh plans


•	Morgan Stanley employee and employee-related accounts according to Morgan Stanley’s account linking rules


•	Shares purchased through reinvestment of dividends and capital gains distributions when purchasing shares of the same fund


•	Shares purchased through a Morgan Stanley self-directed brokerage account


•	C Class (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to A Class shares of the same fund pursuant to Morgan Stanley Wealth Management’s share class conversion program


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (i) the repurchase occurs within 90 days following the redemption, (ii) the redemption and purchase occur in the same account, and (iii) redeemed shares were subject to a front-end or deferred sales charge.

A-2

Raymond James & Associates, Inc., Raymond James Financial Services & Raymond James affiliates (“Raymond James”)

Effective March 1, 2019, shareholders purchasing fund shares through a Raymond James platform or account, or through an introducing broker-dealer or independent registered investment adviser for which Raymond James provides trade execution, clearance, and/or custody services, will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this fund’s prospectus or SAI.

Front-end sales load waivers on Class A shares available at Raymond James


•	Shares purchased in an investment advisory program.


•	Shares purchased within the same fund family through a systematic reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments fund family).


•	Employees and registered representatives of Raymond James or its affiliates and their family members as designated by Raymond James.


•	Shares purchased from the proceeds of redemptions within the American Century Investments fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement).


•	A shareholder in the fund’s C Class shares will have their shares converted at net asset value to A Class shares (or the appropriate share class) of the fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of Raymond James.

CDSC waivers on A and C Class shares available at Raymond James


•	Death or disability of the shareholder.


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus.


•	Return of excess contributions from an IRA Account.


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations as described in the fund’s prospectus.


•	Shares sold to pay Raymond James fees but only if the transaction is initiated by Raymond James.


•	Shares acquired through a right of reinstatement.

Front-end load discounts available at Raymond James: breakpoints, rights of accumulation , and/or letters of intent


•	Breakpoints as described in this prospectus.

•


•	Letters of intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Raymond James may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets.

A-3

Notes

Where to Find More Information

Annual and Semiannual Reports

Statement of Additional Information (SAI)

The Securities and Exchange Commission (SEC)



American Century Investments americancentury.com
Retail Investors P.O. Box 419200 Kansas City, Missouri 64141-6200 1-800-345-2021 or 816-531-5575	Financial Professionals P.O. Box 419385 Kansas City, Missouri 64141-6385 1-800-345-6488

Investment Company Act File No. 811-06441

CL-PRS-92582 2003

March 1, 2020

American Century Investments

Prospectus

International Bond Fund

Investor Class (BEGBX)

I Class (AIBHX)

Y Class (AIBYX)

A Class (AIBDX)

C Class (AIQCX)

R Class (AIBRX)

R5 Class (AIDIX)

R6 Class (AIDDX)

G Class (AIBGX)



The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Table of Contents



Fund Summary	2
Investment Objective	2
Fees and Expenses	2
Principal Investment Strategies	3
Principal Risks	4
Fund Performance	5
Portfolio Management	6
Purchase and Sale of Fund Shares	6
Tax Information	7
Payments to Broker-Dealers and Other Financial Intermediaries	7
Objectives, Strategies and Risks	8
Management	12
Investing Directly with American Century Investments	14
Investing Through a Financial Intermediary	16
Additional Policies Affecting Your Investment	21
Share Price and Distributions	25
Taxes	27
Multiple Class Information	29
Financial Highlights	30

Appendix A	A-1

Fund Summary

Investment Objective

The fund seeks total return.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in American Century Investments funds. More information about these and other discounts is available from your financial professional and in Calculation of Sales Charges on page 17 of the fund’s prospectus, Appendix A of the fund’s prospectus and Sales Charges in Appendix B of the statement of additional information.



Shareholder Fees (fees paid directly from your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	None	None	None	4.50%	None	None	None	None	None
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of the original offering price or redemption proceeds when redeemed within one year of purchase)	None	None	None	None¹	1.00%	None	None	None	None
Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)	$25	None	None	None	None	None	None	None	None



Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
	Investor	I	Y	A	C	R	R5	R6	G
Management Fee	0.79%	0.69%	0.59%	0.79%	0.79%	0.79%	0.59%	0.54%	0.54%
Distribution and Service (12b-1) Fees	None	None	None	0.25%	1.00%	0.50%	None	None	None
Other Expenses	0.02%	0.02%	0.02%	0.02%	0.02%	0.02%	0.02%	0.02%	0.02%
Total Annual Fund Operating Expenses	0.81%	0.71%	0.61%	1.06%	1.81%	1.31%	0.61%	0.56%	0.56%
Fee Waiver	None	None	None	None	None	None	None	None	0.54%²
Total Annual Fund Operating Expenses After Fee Waiver	0.81%	0.71%	0.61%	1.06%	1.81%	1.31%	0.61%	0.56%	0.02%


¹	Purchases of $1 million or more may be subject to a contingent deferred sales charge of 1.00% if the shares are redeemed within one year of the date of purchase.

Example



	1 year	3 years	5 years	10 years
Investor Class	$83	$259	$450	$1,002
I Class	$73	$227	$396	$883
Y Class	$62	$196	$341	$763
A Class	$553	$773	$1,009	$1,686
C Class	$184	$570	$981	$2,124
R Class	$134	$416	$719	$1,578
R5 Class	$62	$196	$341	$763
R6 Class	$57	$180	$313	$702
G Class	$2	$6	$11	$26

Portfolio Turnover

Principal Investment Strategies

Under normal market conditions, the fund invests at least 80% of its net assets in bonds. For purposes of this fund, the advisor defines bonds as non-money market debt securities, such as corporate bonds and notes, debt securities issued by governments, commercial paper and securities backed by mortgages or other assets. The fund will invest primarily in non-dollar denominated debt securities issued by foreign governments and foreign companies. The fund will allocate its assets among at least three different countries (one of which may be the United States). The advisor expects the fund’s dollar-weighted average maturity to range from two to 12 years.

The fund will invest in investment grade debt securities. An “investment grade” security is one that has been rated in one of the four highest categories used by a nationally recognized statistical rating organization or determined by the advisor to be of comparable credit quality. The fund will also invest in high-yield debt securities (“junk bonds”). A “high-yield” security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The portfolio managers use a combination of fundamental research and bond and currency valuation models, and evaluate each country’s economic climate and political discipline for controlling deficits and inflation. Using economic forecasts, the portfolio managers project the expected return for each country. By contrasting expected risks and returns for investments in each country, the portfolio managers select those countries expected to produce the best return at reasonable risk. The portfolio managers limit the use of hedging strategies that minimize the risk of currency fluctuations, but may hedge up to 25% of the fund’s total assets into U.S. dollars when the portfolio manager considers the dollar to be attractive relative to foreign currencies.

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund invests in foreign currency exchange contracts to shift its investment exposure from one currency into another for hedging purposes or to enhance returns. The fund may also invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. In certain foreign markets, swaps can also act as substitutes for other less liquid fixed-income instruments. The fund may also invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

The portfolio managers may engage in hedging of portfolio positions, which usually involves entering into a transaction that has the opposite characteristics of the position being hedged. The net effect of these two positions is to reduce or eliminate the exposure created by the first position.

The fund sells holdings for a variety of reasons, such as to adjust its average maturity or credit quality, to shift assets into and out of higher-yielding securities, or to alter geographic or currency exposure.

Principal Risks

•

Foreign Securities Risk – Foreign securities have certain unique risks, such as currency risk, political, social and economic risk, and foreign market and trading risk. Changes in the value of foreign currencies against the U.S. dollar also could result in gains or losses to the fund. The fund may be affected by political, social or economic events occurring in a country where the fund invests, which could cause the fund’s investments in that country to experience gains or losses. The trading markets for many foreign securities are not as active as U.S. markets and may have less governmental regulation and oversight. Because of these risks, and others, securities of foreign issuers may be less liquid, more volatile and harder to value than U.S. securities.

•

Currency Risk – The fund is subject to the risk of a decline in the value of a foreign currency versus the U.S. dollar, which reduces the dollar value of securities denominated in that currency. The overall impact on the fund’s holdings may be significant depending on the currencies represented in the portfolio, how each one appreciates or depreciates in relation to the U.S. dollar, and whether currency positions are hedged. Currency returns are volatile, and to the extent the fund purchases and sells currencies, it will also be subject to the risk that its trading strategies, including efforts at hedging, will not succeed.

•

Credit Risk – Debt securities, even investment-grade debt securities, are subject to credit risk. Credit risk is the risk that the inability or perceived inability of the issuer to make interest and principal payments will cause the value of the securities to decrease. As a result, the fund’s share price could also decrease. Changes in the credit rating of a debt security held by the fund could have a similar effect.


•	High-Yield Securities Risk – Issuers of high-yield securities are more vulnerable to real or perceived economic changes (such as an economic down turn or a prolonged period of rising interest rates), political changes or adverse developments specific to an issuer. These factors may be more likely to cause an issuer of low quality bonds to default on its obligations.

•

Interest Rate Risk – Investments in debt securities are also sensitive to interest rate changes. Generally, the value of debt securities and the funds that hold them decline as interest rates rise. Interest rate risk, however, is generally higher for the fund than for funds that have a shorter-weighted average maturity, such as money market funds and short-term bond funds. The fund will also be exposed to interest rate risk outside of the U.S. where interest rate trends may differ from those in the U.S. A period of rising interest rates may negatively affect the fund’s performance.

•

Liquidity Risk – The fund may also be subject to liquidity risk. During periods of market turbulence or unusually low trading activity, in order to meet redemptions it may be necessary for the fund to sell securities at prices that could have an adverse effect on the fund’s share price. Changing regulatory and market conditions, including increases in interest rates and credit spreads, may adversely affect the liquidity of the fund’s investments. In addition, when the market for certain investments is illiquid, the fund may be unable to achieve its desired level of exposure to a certain sector. Illiquid securities also may be difficult to value.

•


•	Single Country Risk – Investing a significant portion of assets in one country or region makes the fund more dependent upon the political and economic circumstances of that particular country or region than a mutual fund that is more widely diversified.

•


•	Counterparty Risk – If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.

•

Nondiversification – The fund is classified as nondiversified. A nondiversified fund may invest a greater percentage of its assets in a smaller number of securities than a diversified fund. This gives the portfolio managers the flexibility to hold large positions in a smaller number of securities. If so, a price change in any one of those securities may have a greater impact on the fund’s share price than would be the case in a diversified fund and the fund may be more volatile than if it was diversified.


•	Market Risk – The risk that the value of securities owned by the fund may go up and down, sometimes rapidly or unpredictably.


•	Principal Loss – At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

Fund Performance

Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.

Calendar Year Total Returns

Highest Performance Quarter (3Q 2010): 11.38% Lowest Performance Quarter (4Q 2016): -10.26%



Average Annual Total Returns For the calendar year ended December 31, 2019	1 year	5 years	10 years	Since Inception	Inception Date
Investor Class Return Before Taxes	5.21%	0.80%	0.54%	—	01/07/1992
Return After Taxes on Distributions	5.21%	0.57%	0.05%	—	01/07/1992
Return After Taxes on Distributions and Sale of Fund Shares	3.08%	0.55%	0.27%	—	01/07/1992
I Class¹ Return Before Taxes	5.36%	0.89%	0.64%	—	04/10/2017
Y Class¹ Return Before Taxes	5.51%	1.00%	0.75%	—	04/10/2017
A Class Return Before Taxes	0.31%	-0.38%	-0.16%	—	10/27/1998
C Class Return Before Taxes	4.24%	-0.19%	-0.45%	—	09/28/2007
R Class Return Before Taxes	4.73%	0.30%	0.05%	—	09/28/2007
R5 Class Return Before Taxes	5.51%	1.00%	0.75%	—	08/02/2004
R6 Class Return Before Taxes	5.51%	1.06%	—	0.51%	07/26/2013
G Class Return Before Taxes	6.05%	—	—	1.68%	07/28/2017
Bloomberg Barclays Global Aggregate Bond Index ex-USD (Unhedged) (reflects no deduction for fees, expenses or taxes)	5.09%	1.62%	1.50%	—	—


¹	Historical performance for the I and Y Classes prior to their inception is based on the performance of R5 Class shares. I and Y Class performance has been adjusted to reflect differences in expenses between classes, if applicable.

Portfolio Management

Investment Advisor

American Century Investment Management, Inc.

Portfolio Managers

John A. Lovito, Senior Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2009.

Brian Howell, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 1987.

Simon Chester, Vice President and Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2010.

Abdelak Adjriou, Vice President and Senior Portfolio Manager, has served on teams managing fixed-income investments for American Century Investments since joining the advisor in 2016.

Purchase and Sale of Fund Shares

There is no minimum initial investment amount for Y, R5 or R6 Class shares.

For the Investor, A, C, R and R5 Classes, there is no minimum initial investment amount for certain employer-sponsored retirement plans, however, financial intermediaries or plan recordkeepers may require plans to meet different minimums. For purposes of fund minimums, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Employer-sponsored retirement plans are not eligible to purchase I or Y Class shares.

There is a $50 minimum for subsequent purchases, except that there is no subsequent purchase minimum for financial intermediaries or employer-sponsored retirement plans.

Tax Information

Payments to Broker-Dealers and Other Financial Intermediaries

Objectives, Strategies and Risks

What is the fund’s investment objective?

The fund seeks total return.

The fund’s investment objective is a nonfundamental investment policy and may be changed by the Board of Trustees without shareholder approval upon 60 days’ notice to shareholders.

What are the fund’s principal investment strategies?

Under normal market conditions, the fund invests at least 80% of its net assets in bonds. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. For purposes of this fund, the advisor defines bonds as non-money market debt securities, such as corporate bonds and notes, securities issued by governments, commercial paper and securities backed by mortgages or other assets. The fund will invest primarily in non-dollar denominated debt securities issued by foreign governments (including their agencies, authorities, instrumentalities and political subdivisions) and foreign companies. The fund will allocate its assets among at least three different countries (one of which may be the United States).

The portfolio managers, who are responsible for selecting the fund’s investments, determine whether to buy and sell securities for the fund by using a combination of fundamental research and bond and currency valuation models.


•	Economic/Political Fundamentals. The portfolio managers evaluate each country’s economic climate and political discipline for controlling deficits and inflation.


•	Expected Return. Using economic forecasts, the portfolio managers project the expected return for each country.


•	Relative Value. By contrasting expected risks and returns for investments in each country, the portfolio managers select those countries expected to produce the best return at reasonable risk.

The fund will invest in investment grade debt securities. An “investment grade” security is one that has been rated in one of the four highest categories used by a nationally recognized statistical rating organization or determined by the advisor to be of comparable credit quality. The fund will also invest in high-yield debt securities. A “high-yield” security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The fund may invest in emerging market debt securities. The fund considers a security to be an emerging markets security if its issuer is located outside the following developed countries list, which is subject to change: Australia, Austria, Belgium, Bermuda, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Japan, Luxembourg , the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the United States. In determining an issuer’s location, the portfolio managers may consider various factors including, among others, where the issuer is headquartered, where the issuer’s principal operations are located, where the issuer’s revenues are derived, where the principal trading market is located and the country in which the issuer was legally organized. The weight given to each of these factors will vary depending on the circumstances in a given case.

Generally, the fund will purchase only bonds denominated in foreign currencies. Because the fund is designed for U.S. investors seeking currency and interest rate diversification in their portfolios, the fund limits its use of hedging strategies that may minimize the effect of currency fluctuations. The fund may hedge up to 25% of its total assets into U.S. dollars when the portfolio managers consider the dollar to be attractive relative to foreign currencies.

In addition to the debt securities described above, the fund may also invest in bank loans.

The fund also invests in derivative instruments. The fund invests in foreign currency exchange contracts to shift its investment exposure from one currency into another for hedging purposes or to enhance returns. The fund may also invest in futures contracts, options and swap agreements to manage duration, credit exposure and country exposure. In certain foreign markets, swaps can also act as substitutes for other less liquid fixed-income instruments. The fund may invest in collateralized debt obligations, including collateralized loan obligations, mortgage- or asset-backed securities and other similarly structured investments.

The weighted average maturity of the fund is expected to be between two and 12 years.



	Weighted average maturity (WAM) is a method for comparing portfolios of bonds by calculating the average time until full maturity weighted by the market value of the principal amount to be paid. A fund that contains a large proportion of bonds with significant periods of time remaining on their maturity terms will have a longer WAM, while the WAM will be shorter for a fund that contains more bonds close to maturity.

A description of the policies and procedures with respect to the disclosure of the fund’s portfolio securities is available in the statement of additional information.

What are the principal risks of investing in the fund?

Investing in foreign securities has certain unique risks that make it generally riskier than investing in U.S. securities. Securities of foreign issuers may be less liquid, more volatile and harder to value than U. S. securities. These risks are summarized below.

•

Currency Risk. In addition to changes in the value of the fund’s investments, changes in the value of foreign currencies against the U.S. dollar also could result in gains or losses to the fund. The value of a share of the fund is determined in U.S. dollars. The fund’s investments, however, generally are held in the foreign currency of the country where investments are made. As a result, the fund could recognize a gain or loss based solely upon a change in the exchange rate between the foreign currency and the U.S. dollar. Changes in exchange rates may increase losses and lower gains from the fund’s investments. The overall impact on the fund’s holdings may be significant depending on the currencies represented in the portfolio, how each one appreciates or depreciates in relation to the U.S. dollar, and whether currency positions are hedged. Currency returns are volatile, and to the extent the fund purchases and sells currencies, it will also be subject to the risk that its trading strategies, including efforts at hedging, will not succeed.

•

Political and Economic Risk. The fund invests in foreign debt securities, which are generally riskier than U.S. debt securities. As a result, the fund is subject to foreign political and economic risk not associated with U.S. investments, meaning that political events (civil unrest, national elections, changes in political conditions and foreign relations, imposition of exchange controls and repatriation restrictions), social and economic events (labor strikes, rising inflation) and natural disasters occurring in a country where the fund invests could cause the fund’s investments in that country to experience gains or losses. The fund also could be unable to enforce its ownership rights or pursue legal remedies in countries where it invests.

•

Foreign Market and Trading Risk. The trading markets for many foreign securities are not as active as U.S. markets and may have less governmental regulation and oversight. Foreign markets also may have clearance and settlement procedures that make it difficult for the fund to buy and sell securities. These factors could result in a loss to the fund by causing the fund to be unable to dispose of an investment or to miss an attractive investment opportunity, or by causing fund assets to be uninvested for some period of time.


•	Availability of Information and Regulatory Risk. Generally, foreign companies are not subject to the regulatory controls or uniform accounting, auditing and financial reporting, investor protection and disclosure standards imposed on U.S. issuers. As a result, there may be less publicly-available information about foreign issuers than is available regarding U.S. issuers.

•

Emerging Markets Risk. Investing in securities of issuers located in emerging market countries generally is also riskier than investing in securities of issuers located in foreign developed countries. Emerging market countries may have unstable governments and/or economies that are subject to sudden change. These changes may be magnified by the countries’ emergent financial markets, resulting in significant volatility to investments in these countries. These countries also may lack the legal, business and social framework to support securities markets.

When interest rates change, the fund’s share value will be affected. Generally, when interest rates rise, the fund’s share value will decline. The opposite is true when interest rates decline. The degree to which interest rate changes affect the fund’s performance varies and is related to the weighted average maturity of the fund. For example, when interest rates rise, you can expect the share value of a long-term bond fund to fall more than that of a short-term bond fund. When rates fall, the opposite is true. The interest rate risk for the fund is generally higher than for funds that have shorter weighted average maturities, such as money market and short-term bond funds. The fund will also be exposed to interest rate risk outside the U.S. where interest rate trends may differ from those in the U.S. A period of rising interest rates may negatively affect the fund’s performance.

Options are subject to the risk that the underlying security or asset does not rise sufficiently above the exercise price to cover the premium and transaction costs.

If the fund enters into financial contracts, the fund will be subject to the credit risk presented by the counterparties.

The fund is classified as nondiversified. This means that the fund’s portfolio managers may choose to invest in a relatively small number of securities. If so, a price change in any one of these securities may have a greater impact on the fund’s share price than would be the case if the fund were diversified and the fund may be more volatile than it if was diversified.

At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

Management

Who manages the fund?

The Board of Trustees, investment advisor and fund management team play key roles in the management of the fund.

The Board of Trustees

The Investment Advisor

The percentage rate used to calculate the management fee for a class of shares of the fund is determined daily using a two-component formula that takes into account (i) the daily net assets of the accounts managed by the advisor that are in the same broad investment category as the fund (the “Category Fee”) and (ii) the assets of all funds in the American Century Investments family of funds (the “Complex Fee”). The statement of additional information contains detailed information about the calculation of the fund’s management fee.



Management Fees Paid by the Fund to the Advisor as a Percentage of Average Net Assets for the Fiscal Year Ended October 31, 2019	Investor Class	I Class	Y Class	A Class	C Class	R Class	R5 Class	R6 Class	G Class
International Bond	0.79%	0.69%	0.59%	0.79%	0.79%	0.79%	0.59%	0.54%	0.00%

The Fund Management Team

The advisor uses teams of portfolio managers and analysts, organized by broad investment categories such as money markets, corporate bonds, government bonds and municipal bonds, in its management of fixed-income funds. Designated portfolio managers serve on the firm’s Global Fixed Income Investment Committee , which is responsible for periodically adjusting the fund’s dynamic investment parameters based on economic and market conditions. Each portfolio manager is responsible for security selection and portfolio construction for the fund within these parameters, as well as compliance with stated investment objectives and cash flow monitoring. Other members of the investment team provide research and analytical support but generally do not make day-to-day investment decisions for the fund.

The individuals listed below are jointly and primarily responsible for the day-to-day management of the fund described in this prospectus.

John A. Lovito (Global Fixed Income Investment Committee Representative )

Brian Howell (Global Fixed Income Investment Committee Representative )

Simon Chester

Abdelak Adjriou

Fundamental Investment Policies

Investing Directly with American Century Investments

Services Automatically Available to You

Account Maintenance Fee

If you hold Investor Class shares of any American Century Investments fund, or I Class shares of the American Century Diversified Bond Fund, in an American Century Investments account (i.e., not through a financial intermediary or employer-sponsored retirement plan account), we may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will determine the amount of your total eligible investments twice per year, generally the last Friday in October and April. If the value of those investments is less than $10,000 at that time, we will automatically redeem shares in one of your accounts to pay the $12.50 fee as soon as administratively possible. Please note that you may incur tax liability as a result of the redemption. In determining your total eligible investment amount, we will include your investments in all personal accounts (including American Century Investments Brokerage accounts) registered under your Social Security number. We will not charge the fee as long as you choose to manage your accounts exclusively online. You may enroll for exclusive online account management by visiting americancentury.com. Regardless of whether you manage your account online, you may request a paper copy of the prospectus, statement of additional information, or annual report free of charge.



	Personal accounts include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts, IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Investments Brokerage accounts, you are currently not subject to this fee, but you may be subject to other fees.

Wire Purchases


•	American Century Investments bank information: Commerce Bank N.A., Routing No. 101000019, Account No. 2804918


•	Your American Century Investments account number and fund name


•	Your name


•	The contribution year (for IRAs only)


•	Dollar amount

New Investors: To make a wire purchase into a new account, please complete an application or call us prior to wiring money.

Ways to Manage Your Account

ONLINE

americancentury.com

Exchange shares: Exchange shares from another American Century Investments account with an identical registration.

Make additional investments: Make an additional investment into an established American Century Investments account. If we do not have your bank information, you can add it.

Sell shares*: Redeem shares and choose whether the proceeds are electronically transferred to your authorized bank account or sent by check to your address of record.

* Online redemptions up to $25,000 per day per account.

IN PERSON

If you prefer to handle your transactions in person, visit one of our Investor Centers and a representative can help you open an account, make additional investments, and sell or exchange shares.


•	4500 Main Street, Kansas City, MO — 8 a.m. to 5 p.m., Monday – Friday


•	4917 Town Center Drive, Leawood, KS — 8 a.m. to 5 p.m., Monday – Friday; 8 a.m. to noon, Saturday


•	1665 Charleston Road, Mountain View, CA — 8 a.m. to 5 p.m., Monday – Friday

BY TELEPHONE

Investor Services Representative: 1-800-345-2021

Business, Not-For-Profit and Employer-Sponsored Retirement Plans: 1-800-345-3533

Automated Information Line: 1-800-345-8765

Open an account: If you are a current investor, you can open an account by exchanging shares from another American Century Investments account with an identical registration.

Exchange shares: Call or use our Automated Information Line (available only to Investor Class shareholders).

Sell shares: Call or use our Automated Information Line. The Automated Information Line redemptions are up to $25,000 per day per account and are available for Investor Class shareholders only.

BY MAIL OR FAX

Mail Address: P.O. Box 419200, Kansas City, MO 64141-6200 — Fax: 1-888-327-1998

Open an account: Send a signed, completed application and check or money order payable to American Century Investments.

Exchange shares: Send written instructions to exchange your shares from one American Century Investments account to another with an identical registration.

Sell shares: Send written instructions or a redemption form to sell shares. Call a Service Representative to request a form.

Automatically

Open an account: Not available.

Exchange shares: Send written instructions to set up an automatic exchange of your shares from one American Century Investments account to another with an identical registration.

Make additional investments: With the automatic investment service, you can purchase shares on a regular basis. You must invest at least $50 per month per account.

Sell shares: You may sell shares automatically by establishing a systematic redemption plan.

See Additional Policies Affecting Your Investment for more information about investing with us.

Investing Through a Financial Intermediary

The fund may be purchased by participants in employer-sponsored retirement plans or through financial intermediaries that provide various administrative and distribution services.



	Financial intermediaries include banks, broker-dealers, insurance companies, plan sponsors and financial professionals.

Investor Class

I Class

I Class shares are available for purchase without sales charges or commissions by endowments, foundations, large institutional investors and other financial intermediaries.

Y Class

A Class

C Class

R Class

R5 Class

R6 Class

Calculation of Sales Charges

A Class



Purchase Amount	Sales Charge as a % of Offering Price	Sales Charge as a % of Net Amount Invested	Dealer Commission as a % of Offering Price
Less than $100,000	4.50%	4.71%	4.00%
$100,000 - $249,999	3.50%	3.63%	3.00%
$250,000 - $499,999	2.50%	2.56%	2.00%
$500,000 - $999,999	2.00%	2.04%	1.75%
$1,000,000 - $3,999,999	0.00%	0.00%	0.75%
$4,000,000 - $9,999,999	0.00%	0.00%	0.50%
$10,000,000 or more	0.00%	0.00%	0.25%

Reductions and Waivers of Sales Charges for A Class


•	Certain trust accounts


•	Solely controlled business accounts


•	Single-participant retirement plans


•	Endowments or foundations established and controlled by you or an immediate family member

Concurrent Purchases. You may combine simultaneous purchases in any share class of any American Century Investments fund to qualify for a reduced A Class sales charge.

Waivers for Certain Investors. The sales charge on A Class shares may be waived for:


•	Purchases by registered representatives and other employees of certain financial intermediaries (and their immediate family members, which includes their spouse or domestic partner and children, step-children, parents or step-parents of them, their spouse or domestic partner) having selling agreements with the advisor or distributor


•	Broker-dealer sponsored wrap program accounts and/or fee-based accounts maintained for clients of certain financial intermediaries who have entered into selling agreements with American Century Investments


•	Purchases in accounts of financial intermediaries that have entered into a selling agreement with American Century Investments that allows for the waiver of the sales charge in brokerage accounts that may or may not charge a transaction fe


•	Current officers, directors and employees of American Century Investments

•


•	Purchases of additional shares in accounts that held shares of an Advisor Class fund that was renamed A Class on either September 4, 2007, December 3, 2007 or March 1, 2010. However, if you close your account or if you transfer your account to another financial intermediary, future purchases of A Class shares of a fund may not receive a sales charge waiver.

C Class

Calculation of Contingent Deferred Sales Charge (CDSC)

CDSC Waivers

Any applicable CDSC for A or C Classes may be waived in the following cases:


•	redemptions through systematic withdrawal plans not exceeding annually 12% of the lesser of the original purchase cost or current market value


•	redemptions through employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.


•	distributions from IRAs due to attainment of age 59½ for A Class shares and for C Class shares


•	required minimum distributions from retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations


•	tax-free returns of excess contributions to IRAs


•	redemptions due to death or post-purchase disability


•	exchanges, unless the shares acquired by exchange are redeemed within the original CDSC period


•	IRA Rollovers from any American Century Investments fund held in an employer-sponsored retirement plan, for A Class shares only


•	if no dealer commission was paid to the financial intermediary on the purchase for any other reason

Reinstatement Privilege

Employer-Sponsored Retirement Plans

Exchanging Shares

You may exchange shares of the fund for shares of the same class of another American Century Investments fund without a sales charge if you meet the following criteria:


•	The exchange is for a minimum of $100


•	For an exchange that opens a new account, the amount of the exchange must meet or exceed the minimum account size requirement for the fund receiving the exchange

Moving Between Share Classes and Accounts

Buying and Selling Shares through a Financial Intermediary

Your ability to purchase, exchange, redeem and transfer shares will be affected by the policies of the financial intermediary through which you do business. Some policy differences may include


•	minimum investment requirements


•	exchange policies


•	fund choices


•	cutoff time for investments


•	trading restrictions

See Additional Policies Affecting Your Investment for more information about investing with us.

Additional Policies Affecting Your Investment

Eligibility for Investor Class Shares


•	self-directed accounts on transaction-based platforms that may or may not charge a transaction fee


•	employer-sponsored retirement plans


•	broker-dealer sponsored fee-based wrap programs or other fee-based advisory accounts


•	insurance products and bank/trust products where fees are being charged

Minimum Initial Investment Amounts for Investor, A, C and R Classes



Broker-dealer sponsored wrap program accounts and/or fee-based advisory accounts	No minimum
Coverdell Education Savings Account (CESA)	$2,000¹
Employer-sponsored retirement plans²	No minimum


¹	The minimum initial investment for shareholders investing through financial intermediaries is $250. Financial intermediaries may have different minimums for their clients.


²	For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs.

Subsequent Purchases

Eligibility for I Class Shares

The I Class shares are made available for purchase by individuals and large institutional shareholders such as bank trust departments, corporations, retirement plans, endowments, foundations and financial advisors that meet the fund’s minimum investment requirements.

Minimum Initial Investment Amounts for I Class

American Century Investments may permit an intermediary to waive the initial minimum per shareholder as provided in Buying and Selling Fund Shares in the statement of additional information.

Eligibility for Y Class Shares

Minimum Initial Investment Amounts for Y Class

There is no minimum initial investment amount or subsequent investment amount for Y Class shares, but financial intermediaries may require different investment minimums.

Eligibility for R5 and R6 Class Shares

Minimum Initial Investment Amounts for R5 and R6 Class

There is no minimum initial investment amount or subsequent investment amount for R5 or R6 Class shares, but financial intermediaries or plan recordkeepers may require plans to meet different investment minimums.

Eligibility and Minimum Initial Investment Amounts for G Class

Redemptions

Your redemption proceeds will be calculated using the net asset value (NAV) next determined after we receive your transaction request in good order. If you sell C, or in certain cases, A Class shares, you may pay a sales charge, depending on how long you have held your shares, as described above.

Special Requirements for Large Redemptions

Redemption of Shares in Accounts Below Minimum

If your account balance falls below the minimum initial investment amount for any reason, American Century Investments reserves the right to redeem the shares in the account and send the proceeds to your address of record. Prior to doing so, we will notify you and give you 60 days to meet the minimum. Please note that A and C Class shares redeemed in this manner may be subject to a sales charge if held less than the applicable time period. You may also incur tax liability as a result of the redemption. For I Class shares, we reserve the right to convert your shares to Investor Class shares of the same fund. The Investor Class shares have a unified management fee that is 0.10 percentage points higher than the I Class.

Small Distributions and Uncashed Distribution Checks

Signature Guarantees

A signature guarantee — which is different from a notarized signature — is a warranty that the signature presented is genuine. We may require a signature guarantee for the following transactions.


•	Your redemption or distribution check, or automatic redemption is made payable to someone other than the account owners;


•	Your redemption proceeds or distribution amount is sent by EFT (ACH or wire) to a destination other than your personal bank account;


•	You are transferring ownership of an account over $100,000;


•	You change your address and request a redemption over $100,000 within seven days;


•	You request proceeds from redemptions, dividends, or distributions be sent to an address or financial institution differing from those on record; or


•	You make a redemption or other transaction request via telephone, and we are unable to verify your identity.

We reserve the right to require a signature guarantee for other transactions, or we may employ other security measures, such as signature comparison or notarized signature, at our discretion.

Canceling a Transaction

Frequent Trading Practices


•	within seven days of the purchase; or


•	within 30 days of the purchase, if it happens more than once per year.

The frequent trading limitations do not apply to the following types of transactions:


•	purchases of shares through reinvested distributions (dividends and capital gains);


•	redemption of shares to pay fund or account fees;


•	CheckWriting redemptions;


•	redemptions requested following the death of a registered shareholder;


•	transactions through automatic purchase or redemption plans;


•	transfers and re-registrations of shares within the same fund;


•	shares exchanged from one share class to another within the same fund;


•	transactions by 529 college savings plans and funds of funds (however shareholders of American Century’s funds of funds are subject to the limitations); and


•	reallocation or rebalancing transactions in broker-dealer sponsored fee-based wrap and advisory programs.

Your Responsibility for Unauthorized Transactions

A Note About Mailings to Shareholders

Right to Change Policies

Share Price and Distributions

Share Price

American Century Investments will price the fund shares you purchase, exchange or redeem based on the net asset value (NAV) next determined after your order is received in good order by the fund’s transfer agent, or other financial intermediary with the authority to accept orders on the fund’s behalf. We determine the fund’s NAV as of the close of regular trading (usually 4 p.m. Eastern time) on the New York Stock Exchange (NYSE) on each day the NYSE is open. On days when the NYSE is closed (including certain U.S. national holidays), we do not calculate the NAV.



	The net asset value, or NAV, of each class of the fund is the current value of the class’s assets, minus any liabilities, divided by the number of shares of the class outstanding.


•	if, after the close of the foreign exchange on which a portfolio security is principally traded, but before the close of the NYSE, an event occurs that may materially affect the value of the security;


•	a debt security has been declared in default; or


•	trading in a security has been halted during the trading day.

Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates at the time the fund’s NAV is determined.

Distributions



	Capital gains are increases in the values of capital assets, such as stocks or bonds, from the time the assets are purchased.

Taxes

Some of the tax consequences of owning shares of the fund will vary depending on whether you own them through a taxable or tax-deferred account. Distributions by the fund of dividend and interest income, capital gains and other income it has generated through its investment activities will generally be taxable to shareholders who hold shares in a taxable account. Tax consequences also may result when investors sell fund shares after the net asset value has increased or decreased.

Tax-Deferred Accounts

Taxable Accounts

If you own fund shares through a taxable account, you may be taxed on your investments if the fund makes distributions or if you sell your fund shares.

Taxability of Distributions

Fund distributions may consist of income, such as dividends and interest earned by a fund from its investments, or capital gains generated by the fund from the sale of its investment securities. Distributions of income are taxed as ordinary income, unless they are designated as qualified dividend income and you meet a minimum required holding period with respect to your shares of the fund, in which case they are taxed at the same rates as long-term capital gains. The fund does not expect a significant portion of its distributions to be derived from qualified dividend income.



	Qualified dividend income is a dividend received by a fund from the stock of a domestic or qualifying foreign corporation, provided that the fund has held the stock for a required holding period and the stock was not on loan at the time of the dividend.

For taxable accounts, American Century Investments or your financial intermediary will inform you of the tax character of fund distributions for each calendar year in an annual tax mailing.

Taxes on Transactions

Buying a Dividend

The risk in buying a dividend is that a fund’s portfolio may build up taxable income and gains throughout the period covered by a distribution, as income is earned and securities are sold at a profit. The fund distributes the income and gains to you, after subtracting any losses, even if you did not own the shares when the income was earned or the gains occurred.

If you buy a dividend, you incur the full tax liability of the distribution period, but you may not enjoy the full benefit of the income earned or the gains realized in the fund’s portfolio.

Multiple Class Information

Except as described below, all classes of shares of a fund have identical voting, dividend, liquidation and other rights, preferences, terms and conditions. The only differences among the classes are (a) each class may be subject to different expenses specific to that class; (b) each class has a different identifying designation or name; (c) each class has exclusive voting rights with respect to matters solely affecting such class; (d) each class may have different exchange privileges; (e) the I Class may provide for conversion from that class into shares of the Investor Class of the same fund; and (f) the C Class provides for automatic conversion from that class into shares of the A Class of the same fund after 10 years.

Service, Distribution and Administrative Fees

American Century Investments does not pay any fees to financial intermediaries on Y, R6 or G Class shares.

Financial Highlights

Understanding the Financial Highlights

The table on the next few pages itemizes what contributed to the changes in share price during the most recently ended fiscal period. It also shows the changes in share price for this period in comparison to changes over the last five fiscal years (or a shorter period if the share class is not five years old).

On a per-share basis, the table includes as appropriate


•	share price at the beginning of the period


•	investment income and capital gains or losses


•	distributions of income and capital gains paid to investors


•	share price at the end of the period

The table also includes some key statistics for the period as appropriate


•	Total Return – the overall percentage of return of the fund, assuming the reinvestment of all distributions


•	Expense Ratio – the operating expenses of the fund as a percentage of average net assets


•	Net Income Ratio – the net investment income of the fund as a percentage of average net assets


•	Portfolio Turnover – the percentage of the fund’s investment portfolio that is replaced during the period

International Bond Fund



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data											Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:						Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Tax Return of Capital	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Net Investment Income (Loss)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
Investor Class
2019	$12.40	0.20	0.76	0.96	(0.18)	—	—	(0.18)	$13.18	7.80%	0.81%	1.57%	46%		$351,630
2018	$12.96	0.23	(0.74)	(0.51)	—	(0.05)	—	(0.05)	$12.40	(3.98)%	0.81%	1.76%	40%		$407,913
2017	$12.82	0.09	0.05	0.14	—	—	—	—	$12.96	1.09%	0.80%	0.74%	87%		$452,514
2016	$12.39	0.11	0.58	0.69	—	(0.25)	(0.01)	(0.26)	$12.82	5.57%	0.80%	0.85%	40%		$434,618
2015⁽³⁾	$12.35	0.04	—⁽⁴⁾	0.04	—	—	—	—	$12.39	0.40%	0.81%⁽⁵⁾	0.95%⁽⁵⁾	7%		$469,820
2015	$14.50	0.14	(1.98)	(1.84)	(0.21)	(0.10)	—	(0.31)	$12.35	(12.85)%	0.80%	1.05%	67%		$494,676
I Class
2019	$12.44	0.19	0.78	0.97	(0.19)	—	—	(0.19)	$13.22	7.88%	0.71%	1.67%	46%		$76,919
2018	$12.99	0.25	(0.75)	(0.50)	—	(0.05)	—	(0.05)	$12.44	(3.90)%	0.71%	1.86%	40%		$18,592
2017⁽⁶⁾	$12.31	0.06	0.62	0.68	—	—	—	—	$12.99	5.52%	0.70%⁽⁵⁾	0.88%⁽⁵⁾	87%⁽⁷⁾		$20,782
Y Class
2019	$12.47	0.22	0.76	0.98	(0.20)	—	—	(0.20)	$13.25	7.97%	0.61%	1.77%	46%		$13,732
2018	$13.01	0.28	(0.77)	(0.49)	—	(0.05)	—	(0.05)	$12.47	(3.81)%	0.61%	1.96%	40%		$3,766
2017⁽⁶⁾	$12.31	0.07	0.63	0.70	—	—	—	—	$13.01	5.69%	0.60%⁽⁵⁾	0.96%⁽⁵⁾	87%⁽⁷⁾		$5
A Class
2019	$12.25	0.17	0.73	0.90	(0.14)	—	—	(0.14)	$13.01	7.45%	1.06%	1.32%	46%		$8,981
2018	$12.83	0.20	(0.73)	(0.53)	—	(0.05)	—	(0.05)	$12.25	(4.18)%	1.06%	1.51%	40%		$9,192
2017	$12.73	0.06	0.04	0.10	—	—	—	—	$12.83	0.79%	1.05%	0.49%	87%		$11,031
2016	$12.33	0.08	0.57	0.65	—	(0.25)	—	(0.25)	$12.73	5.38%	1.05%	0.60%	40%		$18,161
2015⁽³⁾	$12.30	0.03	—⁽⁴⁾	0.03	—	—	—	—	$12.33	0.24%	1.06%⁽⁵⁾	0.70%⁽⁵⁾	7%		$18,899
2015	$14.44	0.10	(1.96)	(1.86)	(0.18)	(0.10)	—	(0.28)	$12.30	(13.06)%	1.05%	0.80%	67%		$19,392
C Class
2019	$11.86	0.08	0.71	0.79	(0.05)	—	—	(0.05)	$12.60	6.69%	1.81%	0.57%	46%		$310
2018	$12.52	0.09	(0.70)	(0.61)	—	(0.05)	—	(0.05)	$11.86	(4.92)%	1.81%	0.76%	40%		$482
2017	$12.51	(0.03)	0.04	0.01	—	—	—	—	$12.52	0.08%	1.80%	(0.26)%	87%		$812
2016	$12.22	(0.02)	0.56	0.54	—	(0.25)	—	(0.25)	$12.51	4.52%	1.80%	(0.15)%	40%		$1,034
2015⁽³⁾	$12.22	—⁽⁴⁾	—⁽⁴⁾	—⁽⁴⁾	—	—	—	—	$12.22	0.00%	1.81%⁽⁵⁾	(0.05)%⁽⁵⁾	7%		$1,211
2015	$14.34	0.01	(1.96)	(1.95)	(0.07)	(0.10)	—	(0.17)	$12.22	(13.67)%	1.80%	0.05%	67%		$1,580



For a Share Outstanding Throughout the Years Ended October 31 (except as noted)
Per-Share Data											Ratios and Supplemental Data
		Income From Investment Operations:			Distributions From:						Ratio to Average Net Assets of:
	Net Asset Value, Beginning of Period	Net Investment Income (Loss)⁽¹⁾	Net Realized and Unrealized Gain (Loss)	Total From Investment Operations	Net Investment Income	Net Realized Gains	Tax Return of Capital	Total Distributions	Net Asset Value, End of Period	Total Return⁽²⁾	Operating Expenses	Net Investment Income (Loss)	Portfolio Turnover Rate	Net Assets, End of Period (in thousands)
R Class
2019	$12.15	0.13	0.74	0.87	(0.11)	—	—	(0.11)	$12.91	7.24%	1.31%	1.07%	46%		$77
2018	$12.76	0.16	(0.72)	(0.56)	—	(0.05)	—	(0.05)	$12.15	(4.44)%	1.31%	1.26%	40%		$68
2017	$12.68	0.03	0.05	0.08	—	—	—	—	$12.76	0.63%	1.30%	0.24%	87%		$151
2016	$12.32	0.04	0.57	0.61	—	(0.25)	—	(0.25)	$12.68	5.06%	1.30%	0.35%	40%		$134
2015⁽³⁾	$12.30	0.02	—⁽⁴⁾	0.02	—	—	—	—	$12.32	0.16%	1.31%⁽⁵⁾	0.45%⁽⁵⁾	7%		$157
2015	$14.44	0.07	(1.97)	(1.90)	(0.14)	(0.10)	—	(0.24)	$12.30	(13.28)%	1.30%	0.55%	67%		$179
R5 Class
2019	$12.46	0.23	0.75	0.98	(0.20)	—	—	(0.20)	$13.24	7.97%	0.61%	1.77%	46%		$5,870
2018	$13.00	0.26	(0.75)	(0.49)	—	(0.05)	—	(0.05)	$12.46	(3.82)%	0.61%	1.96%	40%		$5,608
2017	$12.83	0.11	0.06	0.17	—	—	—	—	$13.00	1.33%	0.60%	0.94%	87%		$6,005
2016	$12.41	0.13	0.57	0.70	—	(0.25)	(0.03)	(0.28)	$12.83	5.78%	0.60%	1.05%	40%		$373,045
2015⁽³⁾	$12.36	0.05	—⁽⁴⁾	0.05	—	—	—	—	$12.41	0.40%	0.61%⁽⁵⁾	1.15%⁽⁵⁾	7%		$332,434
2015	$14.51	0.16	(1.97)	(1.81)	(0.24)	(0.10)	—	(0.34)	$12.36	(12.67)%	0.60%	1.25%	67%		$339,993
R6 Class
2019	$12.47	0.26	0.73	0.99	(0.21)	—	—	(0.21)	$13.25	8.02%	0.56%	1.82%	46%		$310
2018	$13.00	0.27	(0.75)	(0.48)	—	(0.05)	—	(0.05)	$12.47	(3.74)%	0.56%	2.01%	40%		$2,691
2017	$12.83	0.12	0.05	0.17	—	—	—	—	$13.00	1.33%	0.55%	0.99%	87%		$3,800
2016	$12.41	0.14	0.57	0.71	—	(0.25)	(0.04)	(0.29)	$12.83	5.83%	0.55%	1.10%	40%		$48,582
2015⁽³⁾	$12.35	0.05	0.01	0.06	—	—	—	—	$12.41	0.49%	0.56%⁽⁵⁾	1.20%⁽⁵⁾	7%		$31,370
2015	$14.50	0.16	(1.97)	(1.81)	(0.24)	(0.10)	—	(0.34)	$12.35	(12.63)%	0.55%	1.30%	67%		$30,516
G Class
2019	$12.56	0.31	0.75	1.06	(0.27)	—	—	(0.27)	$13.35	8.62%	0.02%⁽⁸⁾	2.36%⁽⁸⁾	46%		$186,644
2018	$13.02	0.33	(0.74)	(0.41)	—	(0.05)	—	(0.05)	$12.56	(3.19)%	0.02%⁽⁹⁾	2.55%⁽⁹⁾	40%		$207,787
2017⁽¹⁰⁾	$13.12	0.06	(0.16)	(0.10)	—	—	—	—	$13.02	(0.76)%	0.01%^(5)(11)	1.66%^(5)(11)	87%⁽⁷⁾		$454,794

Notes to Financial Highlights


(1)	Computed using average shares outstanding throughout the period.


(2)	Total returns are calculated based on the net asset value of the last business day and do not reflect applicable sales charges, if any. Total returns for periods less than one year are not annualized.


(3)	July 1, 2015 through October 31, 2015. The fund's fiscal year end was changed from June 30 to October 31, resulting in a four-month annual reporting period. For the years before October 31, 2015, the fund's fiscal year end was June 30.


(4)	Per-share amount was less than $0.005.


(5)	Annualized.


(6)	April 10, 2017 (commencement of sale) through October 31, 2017.


(7)	Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2017.


(8)	The ratio of operating expenses to average net assets before expense waiver and the ratio of net investment income (loss) to average net assets before expense waiver was 0.56% and 1.82%, respectively.


(9)	The ratio of operating expenses to average net assets before expense waiver and the ratio of net investment income (loss) to average net assets before expense waiver was 0.56% and 2.01%, respectively.


(10)	July 28, 2017 (commencement of sale) through October 31, 2017.


(11)	The annualized ratio of operating expenses to average net assets before expense waiver and the annualized ratio of net investment income (loss) to average net assets before expense waiver was 0.55% and 1.12%, respectively.

Appendix A

The information in this Appendix is part of, and incorporated into, the fund’s prospectus.

Financial Intermediary Sales Charge Reduction and Waiver Information

Sales Charge Reductions and Waivers Available through Merrill Lynch

Front-end Sales Load Waivers on A Class Shares available at Merrill Lynch


•	Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan


•	Shares purchased by or through a 529 Plan


•	Shares purchased through a Merrill Lynch affiliated investment advisory program


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch’s platform


•	Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family)


•	Shares exchanged from C Class (i.e. level-load) shares of the same fund in the month of or following the 10-year anniversary of the purchase date


•	Employees and registered representatives of Merrill Lynch or its affiliates and their family members


•	Directors or trustees of the fund, and employees of the fund’s investment advisor or any of its affiliates, as described in this prospectus


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement)

CDSC Waivers on A and C Shares available at Merrill Lynch


•	Death or disability of the shareholder


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus


•	Return of excess contributions from an IRA Account


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70½


•	Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch


•	Shares acquired through a right of reinstatement


•	Shares held in retirement brokerage accounts, that are exchanged for a lower cost share class due to transfer to a fee based account or platform (applicable to A and C shares only)

Front-end load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation & Letters of Intent


•	Breakpoints as described in this prospectus.

•


•	Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable)

A-1

Sales Charge Reductions and Waivers Available through Ameriprise Financial

The following information applies to A Class shares purchases if you have an account with or otherwise purchase fund shares through Ameriprise Financial.


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs or SAR-SEPs.


•	Shares purchased through an Ameriprise Financial investment advisory program (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased by third party investment advisors on behalf of their advisory clients through Ameriprise Financial’s platform (if an advisory or similar share class for such investment advisory program is not available).


•	Shares purchased through reinvestment of distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments family of mutual funds).

•


•	Employees and registered representatives of Ameriprise Financial or its affiliates and their immediate family members.

•


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e. Rights of Reinstatement).

Sales Charge Reductions and Waivers available through Morgan Stanley Wealth Management


•	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs, SAR-SEPs or Keogh plans


•	Morgan Stanley employee and employee-related accounts according to Morgan Stanley’s account linking rules


•	Shares purchased through reinvestment of dividends and capital gains distributions when purchasing shares of the same fund


•	Shares purchased through a Morgan Stanley self-directed brokerage account


•	C Class (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to A Class shares of the same fund pursuant to Morgan Stanley Wealth Management’s share class conversion program


•	Shares purchased from the proceeds of redemptions within the American Century Investments family of mutual funds, provided (i) the repurchase occurs within 90 days following the redemption, (ii) the redemption and purchase occur in the same account, and (iii) redeemed shares were subject to a front-end or deferred sales charge.

A-2

Raymond James & Associates, Inc., Raymond James Financial Services & Raymond James affiliates (“Raymond James”)

Effective March 1, 2019, shareholders purchasing fund shares through a Raymond James platform or account, or through an introducing broker-dealer or independent registered investment adviser for which Raymond James provides trade execution, clearance, and/or custody services, will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this fund’s prospectus or SAI.

Front-end sales load waivers on Class A shares available at Raymond James


•	Shares purchased in an investment advisory program.


•	Shares purchased in the same fund family through a systematic reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the American Century Investments fund family).


•	Employees and registered representatives of Raymond James or its affiliates and their family members as designated by Raymond James.


•	Shares purchased from the proceeds of redemptions within the American Century Investments fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement).


•	A shareholder in the fund’s C Class shares will have their shares converted at net asset value to A Class shares (or the appropriate share class) of the fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of Raymond James.

CDSC waivers on A and C Class shares available at Raymond James


•	Death or disability of the shareholder.


•	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus.


•	Return of excess contributions from an IRA Account.


•	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations as described in the fund’s prospectus.


•	Shares sold to pay Raymond James fees but only if the transaction is initiated by Raymond James.


•	Shares acquired through a right of reinstatement.

Front-end load discounts available at Raymond James: breakpoints, rights of accumulation , and/or letters of intent


•	Breakpoints as described in this prospectus.

•


•	Letters of intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Raymond James may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets.

A-3

Notes

Where to Find More Information

Annual and Semiannual Reports

Statement of Additional Information (SAI)

The Securities and Exchange Commission (SEC)



American Century Investments americancentury.com
Retail Investors P.O. Box 419200 Kansas City, Missouri 64141-6200 1-800-345-2021 or 816-531-5575	Financial Professionals P.O. Box 419385 Kansas City, Missouri 64141-6385 1-800-345-6488

Investment Company Act File No. 811-06441

CL-PRS-92583 2003

March 1, 2020

American Century Investments

Statement of Additional Information

American Century International Bond Funds

Emerging Markets Debt Fund

Investor Class (AEDVX)

I Class (AEHDX)

Y Class (AEYDX)

A Class (AEDQX)

C Class (AEDHX)

R Class (AEDWX)

R5 Class (AEDJX)

R6 Class (AEXDX)

G Class (AEDGX)

Global Bond Fund

Investor Class (AGBVX)

I Class (AGBHX)

Y Class (AGBWX)

A Class (AGBAX)

C Class (AGBTX)

R Class (AGBRX)

R5 Class (AGBNX)

R6 Class (AGBDX)

G Class (AGBGX)

International Bond Fund

Investor Class (BEGBX)

I Class (AIBHX)

Y Class (AIBYX)

A Class (AIBDX)

C Class (AIQCX)

R Class (AIBRX)

R5 Class (AIDIX)

R6 Class (AIDDX)

G Class (AIBGX)



This statement of additional information adds to the discussion in the funds’ prospectuses dated March 1, 2020, but is not a prospectus. The statement of additional information should be read in conjunction with the funds’ current prospectuses. If you would like a copy of a prospectus, please contact us at one of the addresses or telephone numbers listed on the back cover or visit American Century Investments’ website at americancentury.com. This statement of additional information incorporates by reference certain information that appears in the funds’ annual reports, which are delivered to all investors. You may obtain a free copy of the funds’ annual reports by calling 1-800-345-2021.

Table of Contents



The Funds’ History	2
Fund Investment Guidelines	3
Emerging Markets Debt Fund	3
Global Bond Fund	4
International Bond Fund	4
Currency Management	4
Fund Investments and Risks	5
Investment Strategies and Risks	5
Investment Policies	27
Temporary Defensive Measures	29
Portfolio Turnover	29
Disclosure of Portfolio Holdings	30
Management	34
Board of Trustees	34
Officers	39
Code of Ethics	40
Proxy Voting Policies	40
The Funds’ Principal Shareholders	40
Service Providers	40
Investment Advisor	40
Portfolio Managers	43
Transfer Agent and Administrator	45
Sub-Administrator	46
Distributor	46
Custodian Bank	46
Securities Lending Agent	46
Independent Registered Public Accounting Firm	47
Brokerage Allocation	47
Regular Broker-Dealers	48
Information About Fund Shares	48
Multiple Class Structure	49
Valuation of the Fund’s Securities	51
Taxes	52
Federal Income Tax	52
State and Local Taxes	53
Financial Statements	53

Appendix A – Principal Shareholders	A-1
Appendix B – Sales Charges and Payments to Dealers	B-1
Appendix C – Buying and Selling Fund Shares	C-1
Appendix D – Explanation of Fixed-Income Securities Ratings	D-1
Appendix E – Proxy Voting Policies	E-1

The Funds’ History

American Century International Bond Funds is a registered open-end management investment company that was organized as a Massachusetts business trust in 1991 under the name Benham International Funds. In October 1996, it changed its name to American Century International Bond Funds. Throughout this statement of additional information we refer to American Century International Bond Funds as the trust. The trust’s fiscal year end was changed from December 31 to June 30 beginning on January 1, 2007. Beginning October 31, 2015, the trust changed its fiscal year end from June 30 to October 31.

Each fund described in this statement of additional information is a separate series of the trust and operates for many purposes as if it were an independent company. Each fund has its own investment objective, strategy, management team, assets and tax identification and stock registration numbers.



Fund/Class	Ticker Symbol	Inception Date
Emerging Markets Debt
Investor Class	AEDVX	07/29/2014
I Class	AEHDX	04/10/2017
Y Class	AEYDX	04/10/2017
A Class	AEDQX	07/29/2014
C Class	AEDHX	07/29/2014
R Class	AEDWX	07/29/2014
R5 Class	AEDJX	07/29/2014
R6 Class	AEXDX	07/29/2014
G Class	AEDGX	11/14/2017
Global Bond
Investor Class	AGBVX	01/31/2012
I Class	AGBHX	04/10/2017
Y Class	AGBWX	04/10/2017
A Class	AGBAX	01/31/2012
C Class	AGBTX	01/31/2012
R Class	AGBRX	01/31/2012
R5 Class	AGBNX	01/31/2012
R6 Class	AGBDX	07/26/2013
G Class	AGBGX	07/28/2017
International Bond
Investor Class	BEGBX	01/07/1992
I Class	AIBHX	04/10/2017
Y Class	AIBYX	04/10/2017
A Class	AIBDX	10/27/1998
C Class	AIQCX	09/28/2007
R Class	AIBRX	09/28/2007
R5 Class	AIDIX	08/02/2004
R6 Class	AIDDX	07/26/2013
G Class	AIBGX	07/28/2017

Fund Investment Guidelines

This section explains the extent to which the funds’ advisor, American Century Investment Management, Inc. (ACIM), can use various investment vehicles and strategies in managing a fund’s assets. Descriptions of the investment techniques and risks associated with each appear in the section Investment Strategies and Risks, which begins on page 5. In the case of the funds’ principal investment strategies, these descriptions elaborate upon the discussion contained in the prospectus.

Global Bond and Emerging Markets Debt are diversified as defined in the Investment Company Act of 1940 (the Investment Company Act). Diversified means that, with respect to 75% of its total assets, a fund will not invest more than 5% of its total assets in the securities of a single issuer or own more than 10% of the outstanding voting securities of a single issuer (other than U.S. government securities and securities of other investment companies).

International Bond is nondiversified. Nondiversified means that a fund may invest a greater percentage of its assets in a smaller number of securities than a diversified fund.

To meet federal tax requirements for qualification as a regulated investment company, each fund must limit its investments so that at the close of each quarter of its taxable year


(1)	no more than 25% of its total assets are invested in the securities of a single issuer (other than the U.S. government or a regulated investment company); and


(2)	with respect to at least 50% of its total assets, no more than 5% of its total assets are invested in the securities of a single issuer (other than the U.S. government or a regulated investment company) and it does not own more than 10% of the outstanding voting securities of a single issuer.

Investments are varied according to what is judged advantageous under changing economic conditions. It is the advisor’s policy to retain maximum flexibility in management without restrictive provisions as to the proportion of one or another class of securities that may be held, subject to the investment restrictions described below. Subject to the specific limitations applicable to a fund, the fund management teams may invest the assets of each fund in varying amounts in other instruments when such a course is deemed appropriate in order to pursue a fund’s investment objective. Unless otherwise noted, all investment restrictions described below and in each fund’s prospectus are measured at the time of the transaction in the security. If market action affecting fund securities (including, but not limited to, appreciation, depreciation or a credit rating event) causes a fund to exceed an investment restriction, the advisor is not required to take immediate action. Under normal market conditions, however, the advisor’s policies and procedures indicate that the advisor will not make any purchases that will make the fund further outside the investment restriction.

The funds do not invest in securities issued by companies assigned the Global Industry Classification Standard (GICS) or the Bloomberg Industry Classification Standard (BICS) for the tobacco industry. If the issuer of a security purchased by the fund is subsequently found to be classified in the tobacco industry (due to acquisition, merger or otherwise), the fund will sell the security as soon as reasonably possible.

Emerging Markets Debt Fund

The fund considers an emerging market to be any country that is located outside the following developed countries list, which is subject to change: Australia, Austria, Belgium, Bermuda, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the United States. In determining an issuer’s location, the portfolio managers may consider various factors including, among others, where the issuer is headquartered, where the issuer’s principal operations are located, where the issuer’s revenues are derived, where the principal trading market is located and the country in which the issuer was legally organized. The weight given to each of these factors will vary depending on the circumstances in a given case.

The fund may invest without limitation in both investment grade and high-yield securities. An “investment grade” security is one that has been rated in one of the four highest categories used by a nationally recognized statistical organization or determined by the investment advisor to be of comparable credit quality. A “high-yield” security is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality.

The fund also invests in derivative instruments, including foreign currency exchange contracts, in order to shift its investment exposure from one currency into another for hedging purposes or to enhance returns. The fund may also invest in other types of derivative instruments such as futures contracts and swap agreements in order to manage duration, credit exposure and country exposure.

Global Bond Fund

International Bond Fund

For purposes of this fund, the advisor defines bonds as non-money market debt securities, such as corporate bonds and notes, securities issued by governments, commercial paper and securities backed by mortgages or other assets. Under normal market conditions, the fund will invest at least 80% of its net assets in bonds.

The fund may invest in both investment grade and high-yield debt securities. The fund may also invest in emerging market debt securities. The fund considers a security to be an emerging markets security if its issuer is located outside the following developed countries list, which is subject to change: Australia, Austria, Belgium, Bermuda, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Japan, Luxembourg , the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the United States. In determining an issuer’s location, the portfolio managers may consider various factors including, among others, where the issuer is headquartered, where the issuer’s principal operations are located, where the issuer’s revenues are derived, where the principal trading market is located and the country in which the issuer was legally organized. The weight given to each of these factors will vary depending on the circumstances in a given case.

The fund’s investments may include but shall not be limited to: (1) debt obligations issued or guaranteed by (a) a foreign sovereign government or one of its agencies, authorities, instrumentalities or political subdivisions including a foreign state, province or municipality, and (b) supranational organizations such as the World Bank, Asian Development Bank, European Investment Bank, and European Economic Community; (2) debt obligations of (a) foreign banks and bank holding companies, and (b) domestic banks and corporations issued in foreign currencies; and (3) foreign corporate debt securities and commercial paper.

Some securities will also have the country of issue reported as ‘Supranational.’ These are organizations that cannot be aligned with one particular country, such as the International Finance Corporation or the European Development Bank.

For an explanation of the securities ratings referred to in the prospectus and this statement of additional information, see Explanation of Fixed-Income Securities Ratings in Appendix D.

Currency Management

The rate of exchange between U.S. dollars and foreign currencies fluctuates, which results in gains and losses to the funds. Even if the funds’ foreign security holdings perform well, an increase in the value of the dollar relative to the currencies in which portfolio securities are denominated can offset net investment income.

The advisor intends to hedge the currency risk of Global Bond Fund to help lower the price volatility associated with currency risk. The fund will normally limit its foreign currency exposure (from non-U.S. dollar-denominated securities or currencies) to 30% of its total assets.

Because International Bond Fund is designed for U.S. investors seeking currency and interest rate diversification, the fund’s advisor limits its use of hedging strategies intended to minimize the effect of currency fluctuations. Although hedging strategies (if they are successful) reduce exchange rate risk, they also reduce the potential for share price appreciation when foreign currencies increase in value relative to the U.S. dollar.

When the advisor considers the U.S. dollar to be attractive relative to foreign currencies, as much as 25% of International Bond Fund’s total assets may be hedged into U.S. dollars. For temporary defensive purposes and under extraordinary circumstances (such as significant political events), more than 25% of the fund’s total assets may be hedged in this manner.

In managing the funds’ currency exposure, the advisor will buy and sell foreign currencies regularly, either in the spot (i.e., cash) market or the forward market. Forward foreign currency exchange contracts (forward contracts) are individually negotiated and privately traded between currency traders (usually large commercial banks) and their customers. In most cases, no deposit requirements exist, and these contracts are traded at a net price without commission. Forward contracts involve an obligation to purchase or sell a specific currency at an agreed-upon price on a future date. Most contracts expire in less than one year. The funds also may use futures and options for currency management purposes. For more information on futures and options, please see Futures and Options on page 15.

Fund Investments and Risks

Investment Strategies and Risks

This section describes investment vehicles and techniques the portfolio managers can use in managing a fund’s assets. It also details the risks associated with each, because each investment vehicle and technique contributes to a fund’s overall risk profile.

Asset-Backed Securities (ABS)

To the extent permitted by its investment objective, each fund may invest in ABS. ABS are structured like mortgage-backed securities, but instead of mortgage loans or interest in mortgage loans, the underlying assets may include, for example, such items as motor vehicle installment sales or installment loan contracts, leases of various types of real and personal property, home equity loans, student loans, small business loans, and receivables from credit card agreements. The ability of an issuer of ABS to enforce its security interest in the underlying assets may be limited. The value of an ABS is affected by changes in the market’s perception of the assets backing the security, the creditworthiness of the servicing agent for the loan pool, the originator of the loans, the financial institution providing any credit enhancement, and subordination levels.

Payments of principal and interest passed through to holders of ABS are typically supported by some form of credit enhancement, such as a letter of credit, surety bond, limited guarantee by another entity or a priority to certain of the borrower’s other securities. The degree of credit enhancement varies, and generally applies to only a fraction of the asset-backed security’s par value until exhausted. If the credit enhancement of an ABS held by a fund has been exhausted, and if any required payments of principal and interest are not made with respect to the underlying loans, a fund may experience losses or delays in receiving payment.

Some types of ABS may be less effective than other types of securities as a means of “locking in” attractive long-term interest rates. One reason is the need to reinvest prepayments of principal; another is the possibility of significant unscheduled prepayments resulting from declines in interest rates. These prepayments would have to be reinvested at lower rates. As a result, these securities may have less potential for capital appreciation during periods of declining interest rates than other securities of comparable maturities, although they may have a similar risk of decline in market value during periods of rising interest rates. Prepayments may also significantly shorten the effective maturities of these securities, especially during periods of declining interest rates. Conversely, during periods of rising interest rates, a reduction in prepayments may increase the effective maturities of these securities, subjecting them to a greater risk of decline in market value in response to rising interest rates than traditional debt securities, and, therefore, potentially increasing the volatility of a fund.

The risks of investing in ABS are ultimately dependent upon the repayment of loans by the individual or corporate borrowers. Although a fund would generally have no recourse against the entity that originated the loans in the event of default by a borrower, ABS typically are structured to mitigate this risk of default.

ABS are generally issued in more than one class, each with different payment terms. Multiple class ABS may be used as a method of providing credit support through creation of one or more classes whose right to payments is made subordinate to the right to such payments of the remaining class or classes. Multiple classes also may permit the issuance of securities with payment terms, interest rates or other characteristics differing both from those of each other and from those of the underlying assets. Examples include so-called strips (ABS entitling the holder to disproportionate interests with respect to the allocation of interest and principal of the assets backing the security), and securities with classes having characteristics such as floating interest rates or scheduled amortization of principal.

Bank Loans

Each fund may invest in bank loans, which include senior secured and unsecured floating rate loans of corporations, partnerships, or other entities. Typically, these loans hold a senior position in the borrower’s capital structure, may be secured by the borrower’s assets and have interest rates that reset frequently. These loans are usually rated non-investment grade by the rating agencies. An economic downturn generally leads to higher non-payment and default rates by borrowers, and a bank loan can lose a substantial part of its value due to these and other adverse conditions and events. However, as compared to junk bonds, senior floating rate loans are typically senior in the capital structure and are often secured by collateral of the borrower. A fund’s investments in bank loans are subject to credit risk, and there is no assurance that the liquidation of collateral would satisfy the claims of the borrower’s obligations in the event of non-payment of scheduled interest or principal, or that the collateral could be readily liquidated. The interest rates on many bank loans reset frequently, and therefore investors are subject to the risk that the return will be less than anticipated when the investment was first made. Most bank loans, like most investment grade bonds, are not traded on any national securities exchange. Bank loans generally have less liquidity than investment grade bonds and there may be less publicly available information about them.

A fund eligible to invest in bank loans may purchase bank loans from other lenders (sometimes referred to as loan assignments) or it may also acquire a participation interest in another lender’s portion of the bank loan. Large bank loans to corporations or governments may be shared or syndicated among several lenders, usually commercial or investment banks. A fund may participate in such syndicates, or can buy part of a loan, becoming a direct lender. Participation interests involve special types of risk, including liquidity risk and the risks of being a lender. Risks of being a lender include credit risk (the borrower’s ability to meet required principal and interest payments under the terms of the loan), industry risk (the borrower’s industry’s exposure to rapid change or regulation), financial risk (the effectiveness of the borrower’s financial policies and use of leverage), liquidity risk (the adequacy of the borrower’s back-up sources of cash), and collateral risk (the sufficiency of the collateral’s value to repay the loan in the event of non-payment or default by the borrower). If a fund purchases a participation interest, it may only be able to enforce its rights through the lender, and may assume the credit risk of the lender in addition to the credit risk of the borrower.

In addition, transactions in bank loans may take more than seven days to settle. As a result, the proceeds from the sale of bank loans may not be readily available to make additional investments or to meet the fund’s redemption obligations. To mitigate these risks, the fund monitors its short-term liquidity needs in light of the longer settlement period of bank loans. Some bank loan interests may not be registered under the Securities Act of 1933 and therefore not afforded the protections of the federal securities laws.

Collateralized Debt Obligations

Each fund may invest in collateralized debt obligations (“CDOs”), including collateralized loan obligations (“CLOs”), collateralized bond obligations (“CBOs”), and other similarly structured securities. CBOs and CLOs are types of asset backed securities. A CLO is a trust or other special purpose entity that is typically collateralized by a pool of loans, which may include, among others, U.S. and non-U.S. senior secured loans, senior unsecured loans, and subordinate corporate loans, including loans that may be rated below investment grade or equivalent unrated loans. A CBO is generally a trust which is backed by a diversified pool of high risk, below investment grade fixed income securities. The risks of an investment in a CDO depend largely on the type of the collateral backing the obligation and the class of the CDO in which a fund invests. CDOs are subject to credit, interest rate, valuation, prepayment and extension risks. These securities are also subject to risk of default on the underlying asset, particularly during periods of economic downturn. CDOs carry additional risks including, but not limited to, (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments, (ii) the collateral may decline in value or default, (iii) a fund may invest in CDOs that are subordinate to other classes, and (iv) the complex structure of the security may not be fully understood at the time of investment and may produce disputes with the issuer or unexpected investment results.

Commercial Paper

The funds may invest in commercial paper (CP) that is issued by utility, financial, and industrial companies, supranational organizations and foreign governments and their agencies and instrumentalities. Rating agencies assign ratings to short-term securities (including CP) issuers indicating the agencies’ assessment of credit risk. Short-term ratings assigned by certain rating agencies are provided in Explanation of Fixed-Income Securities Ratings, Appendix D.

Some examples of CP and CP issuers are provided in the following paragraphs.

Domestic CP is issued by U.S. industrial and finance companies, utility companies, thrifts and bank holding companies. Foreign CP is issued by non-U.S. industrial and finance companies and financial institutions. Domestic and foreign corporate issuers occasionally have the underlying support of a well-known, highly rated commercial bank or insurance company. Bank support is provided in the form of a letter of credit (an LOC) or irrevocable revolving credit commitment (an IRC). Insurance support is provided in the form of a surety bond.

Bank holding company CP is issued by the holding companies of many well-known domestic banks, including Citicorp, J.P. Morgan Chase & Company and First Union National Bank. Bank holding company CP may be issued by the parent of a money center or regional bank.

Thrift CP is issued by major federal- or state-chartered savings and loan associations and savings banks.

Schedule B Bank CP is short-term, U.S. dollar-denominated CP issued by Canadian subsidiaries of non-Canadian banks (Schedule B banks). Whether issued as CP, a certificate of deposit or a promissory note, each instrument issued by a Schedule B bank ranks equally with any other deposit obligation. CP issued by Schedule B banks provides an investor with the comfort and reduced risk of a direct and unconditional parental bank guarantee.

Schedule B instruments generally offer higher rates than the short-term instruments of the parent bank or holding company.

Asset-backed CP is issued by corporations through special programs. In a typical program, a special purpose corporation (SPC), created and/or serviced by a bank or other financial institution, uses the proceeds from an issuance of CP to purchase receivables or other financial assets from one or more corporations (sellers). The sellers transfer their interest in the receivables or other financial assets to the SPC, and the cash flow from the receivables or other financial assets is used to pay interest and principal on the CP. Letters of credit or other forms of credit enhancement may be available to cover the risk that the cash flow from the receivables or other financial assets will not be sufficient to cover the maturing CP.

Convertible Securities

The funds may invest in convertible securities. A convertible security is a bond, debenture, note, preferred stock or other security that may be converted into or exchanged for a prescribed amount of common stock of the same or a different issuer within a particular time period at a specified price or formula. A convertible security entitles the holder to receive the interest paid or accrued on debt or the dividend paid on preferred stock until the convertible security matures or is redeemed, converted or exchanged. Before conversion or exchange, such securities ordinarily provide a stream of income with generally higher yields than common stocks of the same or similar issuers, but lower than the yield on non-convertible debt. Of course, there can be no assurance of current income because issuers of convertible securities may default on their obligations. In addition, there can be no assurance of capital appreciation because the value of the underlying common stock will fluctuate. Because of the conversion feature, the managers consider some convertible securities to be equity equivalents.

The price of a convertible security will normally fluctuate in some proportion to changes in the price of the underlying asset. A convertible security is subject to risks relating to the activities of the issuer and/or general market and economic conditions. The stream of income typically paid on a convertible security may tend to cushion the security against declines in the price of the underlying asset. However, the stream of income causes fluctuations based upon changes in interest rates and the credit quality of the issuer. In general, the value of a convertible security is a function of (1) its yield in comparison with yields of other securities of comparable maturity and quality that do not have a conversion privilege and (2) its worth, at market value, if converted or exchanged into the underlying common stock. The price of a convertible security often reflects such variations in the price of the underlying common stock in a way that a non-convertible security does not. At any given time, investment value generally depends upon such factors as the general level of interest rates, the yield of similar nonconvertible securities, the financial strength of the issuer and the seniority of the security in the issuer’s capital structure.

A convertible security may be subject to redemption at the option of the issuer at a predetermined price. If a convertible security held by a fund is called for redemption, the fund would be required to permit the issuer to redeem the security and convert it to underlying common stock or to cash, or would sell the convertible security to a third party, which may have an adverse effect on the fund. A convertible security may feature a put option that permits the holder of the convertible security to sell that security back to the issuer at a predetermined price. A fund generally invests in convertible securities for their favorable price characteristics and total return potential and normally would not exercise an option to convert unless the security is called or conversion is forced.

Contingent convertible securities (sometimes referred to as CoCos) generally either convert into equity or have their principal written down upon the occurrence of certain trigger events, which may be linked to the issuer’s stock price, regulatory capital thresholds, regulatory actions relating to the issuer’s continued viability, or other pre-specified events. Under certain circumstances, CoCos may be subject to an automatic write-down of the principal amount or value of the securities, sometimes to zero, thereby cancelling the securities. If such an event occurs, a fund may not have any rights to repayment of the principal amount of the securities that has not become due. Additionally, a fund may not be able to collect interest payments or dividends on such securities once the write-down has occurred. In the event of liquidation or dissolution of the issuer, CoCos generally rank junior to the claims of holders of the issuer’s other debt obligations. CoCos also may provide for the mandatory conversion of the security into common stock of the issuer under certain circumstances. Because the common stock of an issuer may not pay a dividend, a fund may experience reduced yields (or no yield) as a result of the conversion. Conversion of the security from debt to equity would deepen the subordination of the investor and thereby worsen the fund’s standing in bankruptcy.

Counterparty Risk

A fund will be exposed to the credit risk of the counterparties with which, or the brokers, dealers and exchanges through which, it deals, whether it engaged in exchange traded or off-exchange transactions. If a fund’s futures commission merchant, (FCM) becomes bankrupt or insolvent, or otherwise defaults on its obligations to the fund, the fund may not receive all amounts owed to it in respect of its trading, despite the clearinghouse fully discharging all of its obligations. The Commodity Exchange Act requires an FCM to segregate all funds received from its customers with respect to regulated futures transactions from such FCM’s proprietary funds. If an FCM were not to do so to the full extent required by law, the assets of an account might not be fully protected in the event of the

bankruptcy of an FCM. Furthermore, in the event of an FCM’s bankruptcy, a fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of an FCM’s combined customer accounts, even though certain property specifically traceable to the fund (for example, U.S. Treasury bills deposited by the fund) was held by an FCM. FCM bankruptcies have occurred in which customers were unable to recover from the FCM’s estate the full amount of their funds on deposit with such FCM and owing to them. Such situations could arise due to various factors, or a combination of factors, including inadequate FCM capitalization, inadequate controls on customer trading and inadequate customer capital. In addition, in the event of the bankruptcy or insolvency of a clearinghouse, the fund might experience a loss of funds deposited through its FCM as margin with the clearinghouse, a loss of unrealized profits on its open positions, and the loss of funds owed to it as realized profits on closed positions. Such a bankruptcy or insolvency might also cause a substantial delay before the fund could obtain the return of funds owed to it by an FCM who was a member of such clearinghouse.

Because bi-lateral derivative transactions are traded between counterparties based on contractual relationships, a fund is subject to the risk that a counterparty will not perform its obligations under the related contracts. Although each fund intends to enter into transactions only with counterparties which the advisor believes to be creditworthy, there can be no assurance that a counterparty will not default and that the funds will not sustain a loss on a transaction as a result. In situations where a fund is required to post margin or other collateral with a counterparty, the counterparty may fail to segregate the collateral or may commingle the collateral with the counterparty’s own assets. As a result, in the event of the counterparty’s bankruptcy or insolvency, a fund’s collateral may be subject to the conflicting claims of the counterparty’s creditors, and a fund may be exposed to the risk of a court treating a fund as a general unsecured creditor of the counterparty, rather than as the owner of the collateral.

A fund is subject to the risk that issuers of the instruments in which it invests and trades may default on their obligations under those instruments, and that certain events may occur that have an immediate and significant adverse effect on the value of those instruments. There can be no assurance that an issuer of an instrument in which a fund invests will not default, or that an event that has an immediate and significant adverse effect on the value of an instrument will not occur, and that a fund will not sustain a loss on a transaction as a result.

Transactions entered into by a fund may be executed on various U.S. and non-U.S. exchanges, and may be cleared and settled through various clearinghouses, custodians, depositories and prime brokers throughout the world. Although a fund attempts to execute, clear and settle the transactions through entities the advisor believes to be sound, there can be no assurance that a failure by any such entity will not lead to a loss to a fund.

Cyber Security Risk

As the funds increasingly rely on technology and information systems to operate, they become susceptible to operational risks linked to security breaches in those information systems. Both calculated attacks and unintentional events can cause failures in the funds’ information systems. Cyber attacks can include acquiring unauthorized access to information systems, usually through hacking or the use of malicious software, for purposes of stealing assets or confidential information, corrupting data, or disrupting fund operations. Cyber attacks can also occur without direct access to information systems, for example by making network services unavailable to intended users. Cyber security failures by, or breaches of the information systems of, the advisor, distributors, broker-dealers, other service providers (including, but not limited to, index providers, fund accountants, custodians, transfer agents and administrators), or the issuers of securities the fund invests in may also cause disruptions and impact the funds’ business operations. Breaches in information security may result in financial losses, interference with the funds’ ability to calculate NAV, impediments to trading, inability of fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. Additionally, the funds may incur substantial costs to prevent future cyber incidents. The funds have business continuity plans in the event of, and risk management systems to help prevent, such cyber attacks, but these plans and systems have limitations including the possibility that certain risks have not been identified. Moreover, the funds do not control the cyber security plans and systems of our service providers and other third party business partners. The funds and their shareholders could be negatively impacted as a result.

Derivative Instruments

To the extent permitted by its investment objectives and policies, a fund may invest in instruments that are commonly referred to as derivative instruments. Generally, a derivative instrument is a financial arrangement, the value of which is based on, or derived from, a traditional security, asset, or market index. Examples of common derivative instruments include futures contracts, warrants, structured notes, credit default swaps, options contracts, swap transactions and forward currency contracts.

Certain derivative instruments may be described as structured investments. A structured investment is a security whose value or performance is linked to an underlying index or other security or asset class. Structured investments include asset-backed securities (ABS), commercial and residential mortgage-backed securities (MBS and CMBS), and collateralized mortgage obligations (CMO), which are described more fully herein. Structured investments also include securities backed by other types of collateral. Structured investments involve the transfer of specified financial assets to a special purpose entity, generally a corporation or trust, or the deposit of financial assets with a custodian; and the issuance of securities or depositary receipts backed by, or representing interests in, those assets.

Some structured investments are individually negotiated agreements or are traded over the counter. Structured investments may be organized and operated to restructure the investment characteristics of the underlying security. The cash flow on the underlying instruments may be apportioned among the newly issued structured investments to create securities with different investment characteristics, such as varying maturities, payment priorities and interest rate provisions, and the extent of such payments made with respect to structured investments is dependent on the extent of the cash flow on the underlying instruments. Because structured investments typically involve no credit enhancement, their credit risk generally will be equivalent to that of the underlying instruments. Structured investments are subject to such risks as the inability or unwillingness of the issuers of the underlying securities to repay principal and interest, and requests by the issuers of the underlying securities to reschedule or restructure outstanding debt and to extend additional loan amounts.

Some derivative instruments, such as mortgage-related and other asset-backed securities, are in many respects like any other investment, although they may be more volatile or less liquid than more traditional debt securities.

There are many different types of derivative instruments and many different ways to use them. Futures and options are commonly used for traditional hedging purposes to attempt to protect a fund from exposure to changing interest rates, securities prices or currency exchange rates, and for cash management purposes as a low-cost method of gaining exposure to a particular securities market without investing directly in those securities.

The return on a derivative instrument may increase or decrease, depending upon changes in the reference index or instrument to which it relates.

There is a range of risks associated with investments in derivatives, including:


•	the risk that the underlying security, interest rate, market index or other financial asset will not move in the direction the portfolio managers anticipate or that the value of the structured or derivative instrument will not move or react to changes in the underlying security, interest rate, market index or other financial asset as anticipated;


•	the possibility that there may be no liquid secondary market may make it difficult or impossible to close out a position when desired;


•	the risk that daily limits on price fluctuations and speculative position limits on exchanges on which a fund may conduct its transactions in derivative instruments may prevent profitable liquidation of positions, subjecting a fund to the potential of greater losses;


•	the risk that adverse price movements in an instrument can result in a loss substantially greater than a fund’s initial investment;


•	the risk that a fund will have an obligation to deliver securities or currency pursuant to a derivatives transaction that such fund does not own at the inception of the derivatives trade;


•	the risk that the counterparty will fail to perform its obligations; and


•	the risk that a fund will be subject to higher volatility because some derivative instruments create leverage.

A fund may not invest in a derivative instrument if its credit, interest rate, liquidity, counterparty and other risks associated with ownership of the security are outside acceptable limits set forth in the fund’s prospectus. The funds’ Board of Trustees has reviewed the advisor’s policy regarding investments in derivative instruments. That policy specifies factors that must be considered in connection with a purchase of derivative instruments. The policy also establishes a committee that must review certain proposed purchases before the purchases can be made. The advisor will report on fund activity in derivative securities to the Board of Trustees as necessary.

Equity Equivalents

The funds may invest in preferred stocks, other equity securities and equity equivalents, such as convertible bonds, warrants and other securities that permit the fund to receive an equity interest in an issuer, the opportunity to acquire an equity interest in an issuer, or the opportunity to receive a return on its investment that permits the fund to benefit from the growth over time in the equity of an issuer. Equity equivalents also may include securities whose value or return is derived from the value or return of a different security. Depositary receipts are an example of the type of equity equivalent security in which the fund might invest.

Preferred stock is a type of equity security that generally pays dividends at a specified rate and has preference over common stock in the liquidation of assets and payment of dividends. Preferred stock may be structured similarly to a long-dated or perpetual bond and does not ordinarily carry voting rights. Unlike interest payments on a fixed-income security, preferred stock dividends generally are only payable if declared by the issuer’s board of directors. A board of directors, however, is usually not obligated to pay dividends even if they have accrued. Additionally, if an issuer of preferred stock experiences economic or financial difficulties, its preferred stock may lose value due to the reduced likelihood that its board of directors will declare a dividend. Preferred stocks are typically subordinated to bonds and other debt instruments in an issuer’s capital structure, in which case, preferred stock dividends are usually paid only after the company makes required payments to those bond and other debt holders. Consequently, the value of preferred stock may react more strongly than bonds and other debt to actual or perceived changes in a company’s financial condition or prospects. Preferred stock may be substantially less liquid than other securities.

Foreign Currency Exchange Transactions

Each fund expects to exchange dollars for its underlying currencies, and vice versa, in the normal course of managing the fund’s underlying investments. The advisor does not expect that a fund will hold currency that is not earning income on a regular basis, although a fund may do so temporarily when suitable investments are not available. A fund may purchase and sell currencies on a spot basis (i.e., for prompt delivery and settlement), or by entering into forward currency exchange contracts (also called forward contracts) or other contracts to purchase and sell currencies for settlement at a future date. A fund will incur costs in converting assets from one currency to another. Foreign exchange dealers may charge a fee for conversion; in addition, they realize a profit based on the difference (i.e., the spread) between the prices at which they buy and sell various currencies in the spot and forward markets. Thus, a dealer may offer to sell a foreign currency to a fund at one rate and repurchase it at a lesser rate should the fund desire to resell the currency to the dealer.

Each fund may use foreign currency forward contracts to enhance returns by increasing exposure to a foreign currency, or by shifting exposure to the fluctuations in the value of foreign currencies from one foreign currency to another foreign currency. Open positions in forwards used for non-hedging purposes will be covered by the segregation of liquid assets, marked to market daily. Forward contracts are agreements to exchange a specific amount of one currency for a specified amount of another at a future date. The date may be any agreed fixed number of days in the future. The amount of currency to be exchanged, the price at which the exchange will take place, and the date of the exchange are negotiated when a fund enters into the contract and are fixed for the term of the contract. Forward contracts are traded in an interbank market conducted directly between currency traders (usually large commercial banks) and their customers. A forward contract generally has no deposit requirement and is consummated without payment of any commission. However, a fund may enter into forward contracts with deposit requirements or commissions.

At the maturity of a forward contract, a fund may complete the contract by paying for and receiving the underlying currency, or may seek to roll forward its contractual obligation by entering into an offsetting transaction with the same currency trader and paying or receiving the difference between the contractual exchange rate and the current exchange rate. A fund also may be able to enter into an offsetting contract prior to the maturity of the underlying contract. This practice is sometimes referred to as “cross hedging” and may be employed if, for example, the advisor believes that one foreign currency (in which a portion of a fund’s foreign currency holdings are denominated) will change in value relative to the U.S. dollar differently than another foreign currency. There is no assurance that offsetting transactions, or new forward contracts, will always be available to a fund.

Investors should realize that the use of forward contracts does not eliminate fluctuations in the underlying prices of the securities. Such contracts simply establish a rate of exchange that the fund can achieve at some future point in time. Additionally, although such contracts tend to minimize the risk of loss due to fluctuations in the value of the hedged currency when used as a hedge against foreign currency declines, at the same time they tend to limit any potential gain that might result from the change in the value of such currency.

Because investments in, and redemptions from, a fund will be in U.S. dollars, the advisor expects that a fund’s normal investment activity will involve a significant amount of currency exchange. For example, a fund may exchange its underlying foreign currencies for U.S. dollars in order to meet shareholder redemption requests or to pay expenses. These transactions may be executed in the spot or forward markets.

In addition, a fund may combine forward transactions in its underlying currency with investments in U.S. dollar-denominated instruments, in an attempt to construct an investment position whose overall performance will be similar to that of a security denominated in its underlying currency. If the amount of dollars to be exchanged is properly matched with the anticipated value of the dollar-denominated securities, a fund should be able to lock in the foreign currency value of the securities, and the fund’s overall investment return from the combined position should be similar to the return from purchasing a foreign currency-denominated instrument. This is sometimes referred to as a synthetic investment position or a position hedge.

The execution of a synthetic investment position may not be successful. It is impossible to forecast with absolute precision what the market value of a particular security will be at any given time. If the value of a dollar-denominated security is not exactly matched with a fund’s obligation under the forward contract on the contract’s maturity date, a fund may be exposed to some risk of loss from fluctuation of the dollar. Although the advisor will attempt to hold such mismatchings to a minimum, there can be no assurance that the advisor will be successful in doing so.

The funds may also invest in nondeliverable forward (NDF) currency transactions. An NDF is a transaction that represents an agreement between the fund and a counterparty to buy or sell a specified amount of a particular currency at an agreed upon foreign exchange rate on a future date. Unlike other currency transactions, there is no physical delivery of the currency on the settlement of an NDF transaction. Rather, the fund and the counterparty agree to net the settlement by making a payment in U.S. dollars or another fully convertible currency that represents any difference between the foreign exchange rate agreed upon at the inception of the NDF agreement and the actual exchange rate on the agreed upon future date. The funds may use an NDF contract to gain exposure to foreign currencies that are not internationally traded or if the markets for such currencies are heavily regulated or highly taxed. When currency exchange rates do not move as anticipated, a fund could sustain losses on the NDF transaction. This risk is heightened when the transactions involve currencies of emerging market countries. Additionally, certain NDF transactions which involve currencies of less developed countries or certain other currencies, may be thinly traded or relatively illiquid.

Foreign Securities

Each fund invests in the securities of foreign issuers, including foreign governments, when these securities meet the fund’s standards of selection.

A description of the funds’ investment strategies regarding foreign securities is contained in the funds’ prospectuses. Investing in securities of foreign issuers generally involves greater risks than investing in the securities of domestic companies including:

Currency Risk – The value of the foreign investments held by a fund may be significantly affected by changes in currency exchange rates. The dollar value of a foreign security generally decreases when the value of the dollar rises against the foreign currency in which the security is denominated, and tends to increase when the value of the dollar falls against such currency. In addition, the value of fund assets may be affected by losses and other expenses incurred in converting between various currencies in order to purchase and sell foreign securities, and by currency restrictions, exchange control regulation, currency devaluations and political developments. Please see Currency Management on page 4 for more information.

Social, Political and Economic Risk – The economies of many of the countries in which each fund invests are not as developed as the economy of the United States and may be subject to significantly different forces. Political or social instability, expropriation, nationalization, confiscatory taxation and limitations on the removal of funds or other assets also could adversely affect the value of investments. Further, a fund may find it difficult or be unable to enforce ownership rights, pursue legal remedies or obtain judgments in foreign courts.

Regulatory Risk – Foreign companies generally are not subject to the regulatory controls imposed on U.S. issuers and, in general, there is less publicly available information about foreign securities than is available about domestic securities. Many foreign companies are not subject to uniform accounting, auditing and financial reporting standards, practices and requirements comparable to those applicable to domestic companies and there may be less stringent investor protection and disclosure standards in some foreign markets. Income from foreign securities owned by a fund may be reduced by a withholding tax at the source, which would reduce dividend income payable to shareholders.

Market and Trading Risk – Brokerage commission rates in foreign countries, which generally are fixed rather than subject to negotiation as in the United States, are likely to be higher. The securities markets in many of the countries in which a fund invests will have substantially less trading volume than the principal U.S. markets. As a result, the securities of some companies in these countries may be less liquid, more volatile and harder to value than comparable U.S. securities. Furthermore, one securities broker may represent all or a significant part of the trading volume in a particular country, resulting in higher trading costs and decreased liquidity due to a lack of alternative trading partners. There generally is less government regulation and supervision of foreign stock exchanges, brokers and issuers, which may make it difficult to enforce contractual obligations. In addition, it may be more difficult in foreign countries to accurately determine appropriate brokerage commissions, taxes and other trading costs related to securities trades.

Clearance and Settlement Risk – Foreign securities markets also have different clearance and settlement procedures, and in certain markets there have been times when settlements have been unable to keep pace with the volume of securities transactions, making it difficult to conduct such transactions. Delays in clearance and settlement could result in temporary periods when assets of a fund are uninvested and no return is earned. The inability of a fund to make intended security purchases due to clearance and settlement problems could cause the fund to miss attractive investment opportunities. Inability to dispose of portfolio securities due to clearance and settlement problems could result either in losses to the fund due to subsequent declines in the value of the portfolio security or, if a fund has entered into a contract to sell the security, liability to the purchaser.

Ownership Risk – Evidence of securities ownership may be uncertain in many foreign countries. As a result, there is a risk that a fund’s trade details could be incorrectly or fraudulently entered at the time of the transaction, resulting in a loss to the fund.

Sanctions – The U.S. may impose economic sanctions against companies in various sectors of certain countries. This could limit a fund’s investment opportunities in such countries, impairing the fund’s ability to invest in accordance with its investment strategy and/or to meet its investment objective. For example, a fund may be prohibited from investing in securities issued by companies subject to such sanctions. In addition, the sanctions may require a fund to freeze its existing investments in sanctioned companies, prohibiting the fund from selling or otherwise transacting in these investments. Current sanctions or the threat of potential sanctions may also impair the value or liquidity of affected securities and negatively impact a fund.

Risk of Focusing Investment on Region or Country – Investing a significant portion of assets in one country or region makes a fund more dependent upon the political and economic circumstances of that particular country or region.

Eurozone Investment Risk – The Economic and Monetary Union of the European Union (EMU) is comprised of the European Union (EU) members that have adopted the euro currency. By adopting the euro as its currency, a member state relinquishes control of its own monetary policies and is subject to fiscal and monetary controls. EMU members could voluntarily abandon, or be forced out of, the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies, and create more volatile and illiquid markets. As a result, European countries are significantly affected by fiscal and monetary controls implemented by the EMU. The euro currency may not fully reflect the strengths and weaknesses of the various economies that comprise the EMU and Europe generally. Certain countries and regions in the EU are experiencing significant financial difficulties. Some of these countries may be dependent on assistance from other European

governments and institutions or agencies. Assistance may be dependent on a country’s implementation of reforms or reaching a certain level of performance. Failure to reach those objectives or an insufficient level of assistance could result in an economic downturn that could significantly affect the value of investments in those and other European countries. One or more countries could depart from the EU, which could weaken the EU and, by extension, its remaining members. For example, the United Kingdom’s departure, described in more detail below.

United Kingdom Investment Risk – Commonly known as “Brexit,” the United Kingdom’s exit from the EU may result in substantial volatility in foreign exchange markets and may lead to a sustained weakness in the British pound’s exchange rate against the United States dollar, the euro and other currencies, which may impact fund returns. Brexit may destabilize some or all of the other EU member countries and/or the Eurozone. These developments could result in losses to the funds, as there may be negative effects on the value of a fund’s investments and/or on a fund’s ability to enter into certain transactions or value certain investments, and these developments may make it more difficult for funds to exit certain investments at an advantageous time or price. Such events could results from, among other things, increased uncertainty and volatility in the United Kingdom, the EU and other financial markets; fluctuations in asset values; fluctuations in exchange rates; decreased liquidity of investments located, traded or listed within the United Kingdom, the EU or elsewhere; changes in the willingness or ability of financial and other counterparties to enter into transactions or the price and terms on which other counterparties are willing to transact; and/or changes in legal and regulatory regimes to which fund investments are or become subject.

Japanese Investment Risk – Each fund may invest in securities offered by Japanese issuers. The value of such securities may be significantly affected by economic, political and regulatory developments in Japan. The Japanese government contends with persistent economic problems, including deflation, a banking system that has suffered from non-performing loans, and tax laws that dampen growth. Other factors having a negative impact include a heavy government budget deficit and low interest rates.

The Japanese economy lacks diversification, relying heavily on a small number of industries, including the electronic machinery sector. Japan is relatively poor in natural resources, and so it is dependent on imports, especially in the agricultural sector. It also relies on international trade to procure commodities needed for its strong heavy industrial sector, and therefore it is vulnerable to fluctuations in commodity prices. Japan has a high volume of exports, partly due to the government’s protectionist policies, which have caused tension with Japan’s trading partners, including the United States.

Generally, Japanese corporations are required to provide less disclosure than that required by U.S. law and accounting practice. Japanese accounting and auditing practices differ significantly from U.S. standards in specific areas, including regarding unconsolidated subsidiaries and related structures.

Bond Connect Risk – The funds may invest in certain securities that are listed and traded through China’s Bond Connect Program (“Bond Connect”), which allows non-Chinese investors to purchase certain fixed-income investments available from China’s interbank bond market. Bond Connect uses the trading infrastructure of both Hong Kong and China and is therefore not available on trading holidays in those countries. As a result, prices of securities purchased through Bond Connect may fluctuate at times when a fund is unable to add to or exit its position. Securities offered through Bond Connect may lose their eligibility for trading through the program at any time. If Bond Connect securities lose their eligibility for trading through the program, they may be sold but can no longer be purchased through Bond Connect. Bond Connect is subject to regulation by both Hong Kong and China, and there can be no assurance that further regulations will not affect the availability of securities in the program, the frequency of redemptions, or other limitations. In China, the Hong Kong Monetary Authority Central Money Markets Unit holds Bond Connect securities on behalf of investors (such as the funds) via accounts maintained with China’s two fixed-income securities clearinghouses. While these investors may hold beneficial interest in Bond Connect securities, courts in China have limited experience in applying the concept of beneficial ownership. Additionally, a fund may not be able to participate in corporate actions affecting Bond Connect securities due to time constraints or for other operational reasons. As a result, payments of distributions could be delayed. Bond Connect trades are settled in Chinese currency, the renminbi (“RMB”). It cannot be guaranteed that investors will have timely access to a reliable supply of RMB in Hong Kong.

Emerging Markets

The funds may invest in emerging markets to the extent set forth in the prospectuses or in other sections of this SAI, and these investments present greater risk than investing in foreign issuers in general.

Repatriation of investment income, capital, and the proceeds of sales by foreign investors may require governmental registration and/or approval in some emerging market countries. A number of the currencies of developing countries have experienced significant declines against the U.S. dollar in the past, and devaluation may occur subsequent to investments in these currencies by a fund. Inflation and rapid fluctuations in inflation rates have had and may continue to have negative effects on the economies and securities markets of certain emerging market countries. Many of the emerging securities markets are relatively small, have low trading volumes, suffer periods of relative illiquidity, and are characterized by significant price volatility. There is the risk that a future economic or political crisis could lead to price controls, forced mergers of companies, expropriation or confiscatory taxation, seizure, nationalization, or creation of government monopolies, any of which could have a detrimental effect on a fund’s investments. Investing in many former communist or socialist countries involves the additional risk that the government or other executive or legislative bodies may decide not to continue to support economic reform programs and could follow radically different political and/

or economic policies to the detriment of investors, including non-market oriented policies such as the support of certain industries at the expense of other sectors or a return to a completely centrally planned economy. It is possible, particularly in markets in emerging market countries, that purported securities in which the funds invest may subsequently be found to be fraudulent and as a consequence the funds could suffer losses.

Additional risk factors include, but are not limited to, the following: varying custody, brokerage and settlement practices; difficulty in valuation and pricing; less public information about issuers of non-U.S. securities; less governmental regulation and supervision over the issuance and trading of securities; the unavailability of financial information regarding non-U.S. issuers or the difficulty of interpreting financial information prepared under non-U.S. accounting standards; the imposition of withholding and other taxes; adverse political, social or diplomatic developments; limitations on the movement of funds or other assets of an investor between different countries; difficulties in invoking the legal process outside the United States and enforcing contractual obligations; and the difficulty of assessing economic trends in non-U.S. countries. Investment in non-U.S. countries also involves higher brokerage and custodian expenses than does investment in U.S. securities traded on a U.S. securities exchange or market. The occurrence of adverse events affecting one particular emerging market country or region could have more widespread effects and could adversely impact the global trading market for emerging market instruments. Many of the laws that govern private and foreign investment, securities transactions and other contractual relationships in certain emerging market countries are relatively new and largely untested. As a result, an investor may be subject to a number of unusual risks, including inadequate investor protection, contradictory legislation, incomplete, unclear and changing laws, disregard of regulations on the part of other market participants, lack of established or effective avenues for legal redress, absence of standard practices and confidentiality customs characteristic of more developed markets and lack of consistent enforcement of existing regulations. Furthermore, it may be difficult to obtain and/or enforce a judgment in certain countries in which assets of an investor are invested. There can be no assurance that this difficulty in protecting and enforcing rights will not have a material adverse effect on an investor (such as a fund) and its investments.

Company Debt – Governments of many emerging market countries have exercised and continue to exercise substantial influence over many aspects of the private sector through the ownership or control of many companies, including some of the largest in any given country. As a result, government actions in the future could have a significant effect on economic conditions in emerging markets, which in turn, may adversely affect companies in the private sector, general market conditions and prices and yields of certain of the securities held by a fund. Expropriation, confiscatory taxation, nationalization, political, economic or social instability or other similar developments have occurred frequently over the history of certain emerging markets and could adversely affect the funds’ assets should these conditions recur.

Sovereign Debt – Investment in sovereign debt can involve a high degree of risk. The issuers of the sovereign debt securities in which the funds may invest have in the past experienced substantial difficulties in servicing their external debt obligations, which have led to defaults on certain obligations and the restructuring of certain indebtedness. The governmental entity that controls the repayment of sovereign debt may not be able or willing to repay the principal and/or interest when due in accordance with the terms of such debt. A governmental entity’s willingness or ability to repay principal and interest due in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the governmental entity’s policy towards the International Monetary Fund and the political constraints to which a governmental entity may be subject. Governmental entities may also be dependent on expected disbursements from foreign governments, multilateral agencies and others abroad to reduce principal and interest averages on their debt. The commitment on the part of these governments, agencies and others to make such disbursements may be conditioned on a governmental entity’s implementation of economic reforms and/or economic performance and the timely service of such debtor’s obligations. Failure to implement such reforms, achieve such levels of economic performance or repay principal or interest when due may result in the cancellation of such third parties’ commitments to lend funds to the governmental entity, which may further impair such debtor’s ability or willingness to service its debts in a timely manner. Consequently, governmental entities may default on their sovereign debt. Holders of sovereign debt (including a fund) may be requested to participate in the rescheduling of such debt and to extend further loans to governmental entities. There is no bankruptcy proceeding by which sovereign debt on which governmental entities have defaulted may be collected in whole or in part.

Emerging market governmental issuers are among the largest debtors to commercial banks, foreign governments, international financial organizations and other financial institutions. Certain emerging market governmental issuers have not been able to make payments of interest on or principal of debt obligations as those payments have come due. Obligations arising from past restructuring agreements may affect the economic performance and political and social stability of those issuers.

The ability of emerging market governmental issuers to make timely payments on their obligations is likely to be influenced strongly by the issuer’s balance of payments, including export performance, and its access to international credits and investments. An emerging market country whose exports are concentrated in a few commodities could be vulnerable to a decline in the international prices of one or more of those commodities. Increased protectionism on the part of an emerging market country’s trading partners could also adversely affect the country’s exports and tarnish its trade account surplus, if any. To the extent that emerging market countries receive payment for their exports in currencies other than U.S. dollars or non-emerging market currencies, their ability to make debt payments denominated in U.S. dollars or non-emerging market currencies could be affected.

To the extent that an emerging market country cannot generate a trade surplus, it must depend on continuing loans from foreign governments, multilateral organizations or private commercial banks, aid payments from foreign governments and on inflows of foreign investment. The access of emerging market countries to these forms of external funding may not be certain, and a withdrawal of external funding could adversely affect the capacity of emerging market country governmental issuers to make payments on their obligations. In addition, the cost of servicing emerging market debt obligations can be affected by a change in international interest rates since the majority of these obligations carry interest rates that are adjusted periodically based upon international rates.

Another factor bearing on the ability of emerging market countries to repay debt obligations is the level of international reserves of the country. Fluctuations in the level of these reserves affect the amount of foreign exchange readily available for external debt payments and thus could have a bearing on the capacity of emerging market countries to make payments on these debt obligations.

Liquidity, Trading Volume, Regulatory Oversight – The securities markets of emerging market countries are substantially smaller, less developed, less liquid and more volatile than the major securities markets in the United States. The lack of liquidity could have an adverse effect on the value of a fund’s holdings, and on a fund’s ability to dispose of such holdings in response to a specific adverse economic event, such as the deterioration in credit worthiness of a particular debtor.

The limited size of many emerging market securities markets and limited trading volume in the securities of emerging market issuers compared to the volume of trading in the securities of U.S. issuers could cause prices to be erratic for reasons apart from factors that affect the soundness and competitiveness of the securities issuers. Adverse publicity and investors’ perceptions, whether or not based on in-depth fundamental analysis, may decrease the value and liquidity of securities.

Disclosure and regulatory standards in emerging markets are in many respects less stringent than U.S. standards. Issuers in lesser developed and emerging markets are subject to accounting, auditing and financial standards and requirements that differ, in some cases significantly, from those applicable to U.S. issuers. In particular, the assets and profits appearing on the financial statements of such an issuer may not reflect its financial position or results of operations in the way they would be reflected had such financial statements been prepared in accordance with U.S. generally accepted accounting principles. There is substantially less publicly available information about such issuers than there is about U.S. issuers. In addition, such issuers are not subject to regulations similar to the U.S. Sarbanes-Oxley Act of 2002, which imposes many restrictions and mandates on the activities of companies. There is less regulation and monitoring by regulators of lesser developed and emerging market securities markets and the activities of investors, brokers and other participants than in the United States. Moreover, issuers of securities in lesser developed and emerging markets are not subject to the same degree of regulation as are U.S. issuers with respect to such matters as insider trading rules, tender offer regulation, shareholder proxy requirements and the timely disclosure of information. There is also less publicly available information about lesser developed and emerging market companies than U.S. companies.

Default, Legal Recourse – A fund may have limited legal recourse in the event of a default with respect to certain debt obligations it may hold. If the issuer of a fixed income security owned by a fund defaults, the fund may incur additional expenses to seek recovery. Debt obligations issued by emerging market governments differ from debt obligations of private entities; remedies from defaults on debt obligations issued by emerging market governments, unlike those on private debt, must be pursued in the courts of the defaulting party itself. A fund’s ability to enforce its rights against private issuers may be limited. The ability to attach assets to enforce a judgment may be limited. Legal recourse is therefore somewhat diminished. Bankruptcy, moratorium and other similar laws applicable to private issuers of debt obligations may be substantially different from those of other countries. Moreover, if a fund obtains a judgment in a U.S. court, it may be difficult to enforce such judgment in the emerging market country because the country may not be a party to any international treaty with respect to the recognition or enforcement of foreign judgments. Provisions of an emerging market country’s laws that regulate the enforcement of foreign judgments may contain broad exceptions and involve long delays in obtaining a judgment. For example, an emerging markets court may not enforce any foreign judgment if it viewed the amount of damages awarded as excessive or inconsistent with practice in that country. A party seeking to enforce a foreign judgment in an emerging market country may also be required to obtain approval from the central bank of that country to execute such judgment or to repatriate any amount recovered outside of the emerging market country. The political context, expressed as an emerging market governmental issuer’s willingness to meet the terms of the debt obligation, for example, is of considerable importance. In addition, no assurance can be given that the holders of commercial bank debt may not contest payments to the holders of debt obligations in the event of default under commercial bank loan agreements.

Settlement Risk – Settlement and clearance procedures in certain foreign markets differ significantly from those in the United States. Foreign settlement and clearance procedures and trade regulations also may involve certain risks (such as delays in payment for or delivery of securities) not typically associated with the settlement of U.S. investments. At times, settlements in certain foreign countries have not kept pace with the number of securities transactions. These problems may make it difficult for a fund to carry out transactions. If a fund cannot settle or is delayed in settling a purchase of securities, it may miss attractive investment opportunities and certain of its assets may be uninvested with no return earned thereon for some period. If a fund cannot settle or is delayed in settling a sale of securities, it may lose money if the value of the security then declines or, if it has contracted to sell the security to another party, the fund could be liable for any losses incurred.

Inflation – Many emerging markets have experienced substantial, and in some periods extremely high, rates of inflation for many years. Inflation and rapid fluctuations in inflation rates have had and may continue to have adverse effects on the economies and

securities markets of certain emerging market countries. In an attempt to control inflation, wage and price controls have been imposed in certain countries.

Futures and Options

Each fund may enter into futures contracts, options or options on futures contracts. Futures contracts provide for the sale by one party and purchase by another party of a specific security at a specified future time and price. Generally, futures transactions will be used to:


•	protect against a decline in market value of a fund’s securities (taking a short futures position),


•	protect against the risk of an increase in market value for securities in which a fund generally invests at a time when the fund is not fully-invested (taking a long futures position), or


•	provide a temporary substitute for the purchase of an individual security that may not be purchased in an orderly fashion.

Some futures and options strategies, such as selling futures, buying puts and writing calls, hedge the fund’s investments against price fluctuations. Other strategies, such as buying futures, writing puts and buying calls, tend to increase market exposure.

Although other techniques may be used to control a fund’s exposure to market fluctuations, the use of futures contracts may be a more effective means of hedging this exposure. While a fund pays brokerage commissions in connection with opening and closing out futures positions, these costs are lower than the transaction costs incurred in the purchase and sale of the underlying securities.

For example, the sale of a future by a fund means a fund becomes obligated to deliver the security (or securities, in the case of an index future) at a specified price on a specified date. The purchase of a future means a fund becomes obligated to buy the security (or securities) at a specified price on a specified date. The portfolio manager may engage in futures and options transactions based on securities indices provided that the transactions are consistent with a fund’s investment objectives. Examples of indices that may be used include the Morgan Stanley Capital International Europe, Australasia, Far East Index (MSCI EAFE) and Morgan Stanley Capital International Emerging Markets Free Index (MSCI EMF). The portfolio manager also may engage in futures and options transactions based on specific securities, such as U.S. Treasury bonds or notes. Futures contracts are traded on national futures exchanges. Domestic futures exchanges and trading are regulated under the Commodity Exchange Act by the Commodity Futures Trading Commission (CFTC), a U.S. government agency.

Index futures contracts differ from traditional futures contracts in that when delivery takes place, no stocks or bonds change hands. Instead, these contracts settle in cash at the spot market value of the index. Although other types of futures contracts by their terms call for actual delivery or acceptance of the underlying securities, in most cases the contracts are closed out before the settlement date. A futures position may be closed by taking an opposite position in an identical contract (i.e., buying a contract that has previously been sold or selling a contract that has previously been bought).

Unlike when a fund purchases or sells a bond, no price is paid or received by a fund upon the purchase or sale of the future. Initially, a fund will be required to deposit an amount of cash or securities equal to a varying specified percentage of the contract amount. This amount is known as initial margin. The margin deposit is intended to ensure completion of the contract (delivery or acceptance of the underlying security) if it is not terminated prior to the specified delivery date. A margin deposit does not constitute a margin transaction for purposes of a fund’s investment restrictions. Minimum initial margin requirements are established by the futures exchanges and may be revised. In addition, brokers may establish margin deposit requirements that are higher than the exchange minimums. Cash held in the margin accounts generally is not income-producing. However, coupon bearing securities, such as Treasury bills and bonds, held in margin accounts generally will earn income. Subsequent payments to and from the broker, called variation margin, will be made on a daily basis as the price of the underlying debt securities or index fluctuates, making the future more or less valuable, a process known as marking the contract to market. Changes in variation margin are recorded by a fund as unrealized gains or losses.

At any time prior to expiration of the future, a fund may elect to close the position by taking an opposite position. A final determination of variation margin is then made; additional cash is required to be paid by or released to a fund and that fund realizes a loss or gain.

Purchasing Put and Call Options

By purchasing a put option, a fund obtains the right (but not the obligation) to sell the option’s underlying instrument at a fixed strike price. In return for this right, a fund pays the current market price for the option (known as the option premium). Options have various types of underlying instruments, including specific securities, indices of securities prices, and futures contracts. A fund may terminate its position in a put option it has purchased by allowing it to expire or by exercising the option. If the option is allowed to expire, a fund will lose the entire premium it paid. If a fund exercises the option, it completes the sale of the underlying instrument at the strike price. A fund also may terminate a put option position by closing it out in the secondary market at its current price if a liquid secondary market exists.

The buyer of a typical put option can expect to realize a gain if security prices fall substantially. However, if the underlying instrument’s price does not fall enough to offset the cost of purchasing the option, a put buyer can expect to suffer a loss (limited to the amount of the premium paid, plus related transaction costs).

The features of call options are essentially the same as those of put options, except that the purchaser of a call option obtains the right to purchase, rather than sell, the underlying instrument at the option’s strike price. A call buyer typically attempts to participate in potential price increases of the underlying instrument with risk limited to the cost of the option if security prices fall. At the same time, the buyer can expect to suffer a loss if security prices do not rise sufficiently to offset the cost of the option.

Writing Put and Call Options

If a fund writes a put option, it takes the opposite side of the transaction from the option’s purchaser. In return for receipt of the premium, a fund assumes the obligation to pay the strike price for the option’s underlying instrument if the other party chooses to exercise the option. When writing an option on a futures contract, a fund will be required to make margin payments to a broker or custodian as described above for futures contracts. A fund may seek to terminate its position in a put option it writes before exercise by closing out the option in the secondary market at its current price. However, if the secondary market is not liquid for a put option a fund has written, the fund must continue to be prepared to pay the strike price while the option is outstanding, regardless of price changes, and must continue to set aside assets to cover its position.

If security prices rise, a put writer would generally expect to profit, although the gain would be limited to the amount of the premium received. If security prices remain the same over time, the writer also would likely profit by being able to close out the option at a lower price. If security prices fall, the put writer would expect to suffer a loss. This loss should be less than the loss from purchasing the underlying instrument directly, however, because the premium received for writing the option should mitigate the effects of the decline.

Writing a call option obligates a fund to sell or deliver the option’s underlying instrument in return for the strike price upon exercise of the option. The characteristics of writing call options are similar to those of writing put options, except that writing calls generally is a profitable strategy if prices remain the same or fall. Through receipt of the option premium, a call writer mitigates the effects of a price decline. At the same time, because a call writer must be prepared to deliver the underlying instrument in return for the strike price even if its current value is greater, a call writer gives up some ability to participate in security price increases.

Combined Positions

A fund may purchase and write options in combination with one another, or in combination with futures or forward contracts, to adjust the risk and return characteristics of the overall position. For example, a fund may purchase a put option and write a call option on the same underlying instrument to construct a combined position whose risk and return characteristics are similar to selling a futures contract. Another possible combined position would involve writing a call option at one strike price and buying a call option at a lower price to reduce the risk of the written call option in the event of a substantial price increase. Because combined options positions involve multiple trades, they result in higher transaction costs and may be more difficult to open and close out.

Over-the-Counter Options

Unlike exchange-traded options, which are standardized with respect to the underlying instrument, expiration date, contract size, and strike price, the terms of over-the-counter (OTC) options (options not traded on exchanges) generally are established through negotiation with the other party to the option contract. While this type of arrangement allows the fund greater flexibility to tailor an option to its needs, OTC options generally involve greater credit risk than exchange-traded options, which are guaranteed by the clearing organizations of the exchanges where they are traded. The risk of illiquidity also is greater with OTC options because these options generally can be closed out only by negotiation with the other party to the option.

Risks Related to Futures and Options Transactions

Futures and options prices can be volatile, and trading in these markets involves certain risks. If the portfolio manager applies a hedge at an inappropriate time or judges interest rate trends incorrectly, futures and options strategies may lower a fund’s return.

A fund could suffer losses if it is unable to close out its position because of an illiquid secondary market. Futures contracts may be closed out only on an exchange that provides a secondary market for these contracts, and there is no assurance that a liquid secondary market will exist for any particular futures contract at any particular time. Consequently, it may not be possible to close a futures position when the portfolio manager considers it appropriate or desirable to do so. In the event of adverse price movements, a fund would be required to continue making daily cash payments to maintain its required margin. If a fund had insufficient cash, it might have to sell portfolio securities to meet daily margin requirements at a time when the portfolio manager would not otherwise elect to do so. In addition, a fund may be required to deliver or take delivery of instruments underlying futures contracts it holds. The portfolio manager will seek to minimize these risks by limiting the futures contracts entered into on behalf of a fund to those traded on national futures exchanges and for which there appears to be a liquid secondary market.

A fund could suffer losses if the prices of its futures and options positions were poorly correlated with its other investments, or if securities underlying futures contracts purchased by a fund had different maturities than those of the portfolio securities being hedged. Such imperfect correlation may give rise to circumstances in which a fund loses money on a futures contract at the same time that it experiences a decline in the value of its hedged portfolio securities. A fund also could lose margin payments it has deposited with a margin broker if, for example, the broker became bankrupt.

Most futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day’s settlement

price at the end of the trading session. Once the daily limit has been reached in a particular type of contract, no trades may be made on that day at a price beyond the limit. However, the daily limit governs only price movement during a particular trading day and, therefore, does not limit potential losses. In addition, the daily limit may prevent liquidation of unfavorable positions. Futures contract prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of futures positions and subjecting some futures traders to substantial losses.

Options on Futures

By purchasing an option on a futures contract, a fund obtains the right, but not the obligation, to sell the futures contract (a put option) or to buy the contract (a call option) at a fixed strike price. A fund can terminate its position in a put option by allowing it to expire or by exercising the option. If the option is exercised, a fund completes the sale of the underlying security at the strike price. Purchasing an option on a futures contract does not require a fund to make margin payments unless the option is exercised.

Correlation of Price Changes

Because there are a limited number of types of exchange-traded futures and options contracts, it is likely that the standardized contracts available will not match a fund’s current or anticipated investments exactly. A fund may invest in futures and options contracts based on securities with different issuers, maturities, or other characteristics from the securities in which it typically invests (for example, by hedging intermediate-term securities with a futures contract based on an index of long-term bond prices); this involves a risk that the futures position will not track the performance of a fund’s other investments.

Options and futures prices can diverge from the prices of their underlying instruments even if the underlying instruments correlate well with a fund’s investments. Options and futures prices are affected by factors such as current and anticipated short-term interest rates, changes in volatility of the underlying instrument, and the time remaining until expiration of the contract, which may not affect security prices the same way. Imperfect correlation also may result from differing levels of demand in the options and futures markets and securities markets, from structural differences in how options and futures and securities are traded, or from the imposition of daily price fluctuation limits or trading halts. A fund may purchase or sell options and futures contracts with a greater or lesser value than the securities it wishes to hedge or intends to purchase in an effort to compensate for differences in volatility between the contract and the securities, although this may not be successful in all cases. If price changes in a fund’s options or futures positions are poorly correlated with its other investments, the positions may fail to produce anticipated gains or result in losses that are not offset by gains in other investments.

Futures and Options Contracts Relating to Foreign Currencies

A fund may purchase and sell currency futures and purchase and write currency options to increase or decrease its exposure to different foreign currencies. A fund also may purchase and write currency options in connection with currency futures or forward contracts.

Currency futures contracts are similar to forward currency exchange contracts, except that they are traded on exchanges and have standard contract sizes and delivery dates. Most currency futures contracts call for payment or delivery in U.S. dollars.

The uses and risks of currency futures are similar to those of futures relating to securities or indices, as described above. Currency futures values can be expected to correlate with exchange rates but may not reflect other factors that affect the value of a fund’s investments. A currency hedge, for example, should protect a German-mark-denominated security from a decline in the German mark, but it will not protect a fund against a price decline resulting from a deterioration in the issuer’s creditworthiness.

Liquidity of Futures Contracts and Options

There is no assurance that a liquid secondary market will exist for any particular futures contract or option at any particular time. Options may have relatively low trading volume and liquidity if their strike prices are not close to the underlying instrument’s current price. In addition, exchanges may establish daily price fluctuation limits for futures contracts and options and may halt trading if a contract’s price moves upward or downward more than the limit on a given day. On volatile trading days when the price fluctuation limit is reached or a trading halt is imposed, it may be impossible for a fund to enter into new positions or close out existing positions. If the secondary market for a contract was not liquid, because of price fluctuation limits or otherwise, prompt liquidation of unfavorable positions could be difficult or impossible, and a fund could be required to continue holding a position until delivery or expiration regardless of changes in its value. Under these circumstances, a fund’s access to assets held to cover its future positions also could be impaired.

Futures and options trading on foreign exchanges may not be regulated as effectively as similar transactions in the U.S. and may not involve clearing mechanisms or guarantees similar to those available in the U.S. The value of a futures contract or option traded on a foreign exchange may be adversely affected by the imposition of different exercise and settlement terms, trading procedures, margin requirements and lesser trading volume.

Restrictions on the Use of Futures Contracts and Options

Each fund may enter into futures contracts, options, options on futures contracts, or swap agreements as permitted by its investment policies and the Commodity Futures Trading Commission (CFTC) rules. The advisor to each fund has claimed an exclusion from the definition of the term “commodity pool operator” under the Commodity Exchange Act and, therefore, the advisor is not subject to registration or regulation as a commodity pool operator under that Act with respect to its provision of services to each fund.

The CFTC recently adopted certain rule amendments that may impose additional limits on the ability of a fund to invest in futures contracts, options on futures, swaps, and certain other commodity interests if its investment advisor does not register with the CFTC as a “commodity pool operator” with respect to such fund. It is expected that the funds will be able to execute their investment strategies within the limits adopted by the CFTC’s rules. As a result, the advisor does not intend to register with the CFTC as a commodity pool operator on behalf of any of the funds. In the event that one of the funds engages in transactions that necessitate future registration with the CFTC, the advisor will register as a commodity pool operator and comply with applicable regulations with respect to that fund.

To the extent required by law, each fund will segregate cash, cash equivalents or other appropriate liquid securities on its records in an amount sufficient to cover its obligations under the futures contracts, options and swap agreements.

Hybrid Securities

Hybrid securities have characteristics that differ from both common stocks and senior debt securities, typically ranking senior to common stock and subordinate to senior debt in an issuer’s capital structure. Hybrid securities may have features such as deferrable and/or non-cumulative interest payments, long-dated maturity or no maturity, reduced or no acceleration rights, and may be subject to principal reduction without default under certain circumstances. Because of these features, the managers may consider some hybrid securities to be equity or equity equivalents and some to be debt securities based on each security’s individual characteristics.

Inflation-Linked Securities

The funds may purchase inflation-linked securities issued by the U.S. Treasury, U.S. government agencies and instrumentalities other than the U.S. Treasury, and other entities, including those issued by governments of other countries and other foreign entities, including foreign issuers from emerging markets.

Inflation-linked securities are designed to offer a return linked to inflation, thereby protecting future purchasing power of the money invested in them. However, inflation-linked securities provide this protected return only if held to maturity. In addition, inflation-linked securities may not trade at par value. Real interest rates (the market rate of interest less the anticipated rate of inflation) change over time as a result of many factors, such as what investors are demanding as a true value for money. When real rates do change, inflation-linked securities prices will be more sensitive to these changes than conventional bonds, because these securities were sold originally based upon a real interest rate that is no longer prevailing. Should market expectations for real interest rates rise, the price of inflation-linked securities and the share price of a fund holding these securities will fall. Investors in the funds should be prepared to accept not only this share price volatility but also the possible adverse tax consequences it may cause.

An investment in securities featuring inflation-adjusted principal and/or interest involves factors not associated with more traditional fixed-principal securities. Such factors include the possibility that the inflation index may be subject to significant changes, that changes in the index may or may not correlate to changes in interest rates generally or changes in other indices, or that the resulting interest may be greater or less than that payable on other securities of similar maturities. In the event of sustained deflation, it is possible that the amount of semiannual interest payments, the inflation-adjusted principal of the security or the value of the stripped components will decrease. If any of these possibilities are realized, a fund’s net asset value could be negatively affected.

Inflation-Linked Treasury Securities

Inflation-linked U.S. Treasury securities are U.S. Treasury securities with a final value and interest payment stream linked to the inflation rate. Inflation-linked U.S. Treasury securities may be issued in either note or bond form. Inflation-linked U.S. Treasury notes have maturities of at least one year, but not more than 10 years. Inflation-linked U.S. Treasury bonds have maturities of more than 10 years.

Inflation-linked U.S. Treasury securities may be attractive to investors seeking an investment backed by the full faith and credit of the U.S. government that provides a return in excess of the rate of inflation. These securities were first sold in the U.S. market in January 1997. Inflation-linked U.S. Treasury securities are auctioned and issued on a quarterly basis.

Structure and Inflation Index – The principal value of inflation-linked U.S. Treasury securities will be adjusted to reflect changes in the level of inflation. The index for measuring the inflation rate for inflation-linked U.S. Treasury securities is the non-seasonally adjusted U.S. City Average All Items Consumer Price Index for All Urban Consumers (Consumer Price Index) published monthly by the U.S. Department of Labor’s Bureau of Labor Statistics.

Semiannual coupon interest payments are made at a fixed percentage of the inflation-linked principal value. The coupon rate for the semiannual interest rate of each issuance of inflation-linked U.S. Treasury securities is determined at the time the securities are sold to the public (i.e., by competitive bids in the auction). The coupon rate will likely reflect real yields available in the U.S. Treasury market; real yields are the prevailing yields on U.S. Treasury securities with similar maturities, less then-prevailing inflation expectations. While a reduction in inflation will cause a reduction in the interest payment made on the securities, the repayment of principal at the maturity of the security is guaranteed by the U.S. Treasury to be no less than the original face or par amount of the security at the time of issuance.

Indexing Methodology - The principal value of inflation-linked U.S. Treasury securities will be indexed, or adjusted, to account for changes in the Consumer Price Index. Semiannual coupon interest payment amounts will be determined by multiplying the inflation-linked principal amount by one-half the stated rate of interest on each interest payment date.

Taxation - The taxation of inflation-linked U.S. Treasury securities is similar to the taxation of conventional bonds. Both interest payments and the difference between original principal and the inflation-adjusted principal will be treated as interest income subject to taxation. Interest payments are taxable when received or accrued. The inflation adjustment to the principal is subject to tax in the year the adjustment is made, not at maturity of the security when the cash from the repayment of principal is received. If an upward adjustment has been made, investors in non-tax-deferred accounts will pay taxes on this amount currently. Decreases in the indexed principal can be deducted only from current or previous interest payments reported as income.

Inflation-linked U.S. Treasury securities therefore have a potential cash flow mismatch to an investor, because investors must pay taxes on the inflation-adjusted principal before the repayment of principal is received. It is possible that, particularly for high income tax bracket investors, inflation-linked U.S. Treasury securities would not generate enough cash in a given year to cover the tax liability they could create. This is similar to the current tax treatment for zero-coupon bonds and other discount securities. If inflation-linked U.S. Treasury securities are sold prior to maturity, capital losses or gains are realized in the same manner as traditional bonds.

Investors in a fund will receive dividends that represent both the interest payments and the principal adjustments of the inflation-linked securities held in the fund’s portfolio. An investment in a fund may, therefore, be a means to avoid the cash flow mismatch associated with a direct investment in inflation-linked securities. For more information about taxes and their effect on you as an investor in the funds, see Taxes, page 52.

U.S. Government Agencies

A number of U.S. government agencies and instrumentalities other than the U.S. Treasury may issue inflation-linked securities. Some U.S. government agencies have issued inflation-linked securities whose design mirrors that of the inflation-linked U.S. Treasury securities described above.

Other/Foreign Entities

Entities other than the U.S. Treasury or U.S. government agencies and instrumentalities may issue inflation-linked securities. While some entities have issued inflation-linked securities whose design mirrors that of the inflation-linked U.S. Treasury securities described above, others utilize different structures. For example, the principal value of these securities may be adjusted with reference to the Consumer Price Index, but the semiannual coupon interest payments are made at a fixed percentage of the original issue principal. Alternatively, the principal value may remain fixed, but the coupon interest payments may be adjusted with reference to the Consumer Price Index.

Inflation-linked securities issued by a foreign government are generally adjusted to reflect an index comparable to the U.S.’s CPI index, as calculated by such foreign government. There can be no assurance that the foreign inflation index will accurately measure the real rate of inflation in the prices of goods and services. Moreover, there can be no assurance that the rate of inflation in a foreign country will be correlated to the rate of inflation in the U.S. In addition, to the extent that the currency used to calculate the fund’s NAV is different from the currencies of the underlying inflation-linked securities held by the fund, changes in foreign exchange rates may negate the impact of any adjustments to interest rates payable on inflation-linked securities when the fund’s NAV is calculated. As inflation generally has the effect of diluting the value of a given currency against other currencies, any increase in the value of the fund attributable to increased interest income resulting from an adjustment to the interest rate of an inflation-linked security may be lost through a decrease in value of the underlying bond when its value is translated into U.S. dollars.

Inverse Floaters

Emerging Markets Debt and International Bond may hold inverse floaters. An inverse floater is a type of derivative security that bears an interest rate that moves inversely to market interest rates. As market interest rates rise, the interest rate on inverse floaters goes down, and vice versa. Generally, this is accomplished by expressing the interest rate on the inverse floater as an above-market fixed rate of interest, reduced by an amount determined by reference to a market-based or bond-specific floating interest rate (as well as by any fees associated with administering the inverse floater program).

Inverse floaters may be issued in conjunction with an equal amount of Dutch Auction floating-rate bonds (floaters), or a market-based index may be used to set the interest rate on these securities. A Dutch Auction is an auction system in which the price of the security is gradually lowered until it meets a responsive bid and is sold. Floaters and inverse floaters may be brought to market by (1) a broker-dealer who purchases fixed-rate bonds and places them in a trust, or (2) an issuer seeking to reduce interest expenses by using a floater/inverse floater structure in lieu of fixed-rate bonds.

In the case of a broker-dealer structured offering (where underlying fixed-rate bonds have been placed in a trust), distributions from the underlying bonds are allocated to floater and inverse floater holders in the following manner:


(i)	Floater holders receive interest based on rates set at a six-month interval or at a Dutch Auction, which is typically held every 28 to 35 days. Current and prospective floater holders bid the minimum interest rate that they are willing to accept on the floaters, and the interest rate is set just high enough to ensure that all of the floaters are sold.


(ii)	Inverse floater holders receive all of the interest that remains, if any, on the underlying bonds after floater interest and auction fees are paid. The interest rates on inverse floaters may be significantly reduced, even to zero, if interest rates rise.

Procedures for determining the interest payment on floaters and inverse floaters brought to market directly by the issuer are comparable, although the interest paid on the inverse floaters is based on a presumed coupon rate that would have been required to bring fixed-rate bonds to market at the time the floaters and inverse floaters were issued.

Where inverse floaters are issued in conjunction with floaters, inverse floater holders may be given the right to acquire the underlying security (or to create a fixed-rate bond) by calling an equal amount of corresponding floaters. The underlying security may then be held or sold. However, typically, there are time constraints and other limitations associated with any right to combine interests and claim the underlying security.

Floater holders subject to a Dutch Auction procedure generally do not have the right to put back their interests to the issuer or to a third party. If a Dutch Auction fails, the floater holder may be required to hold its position until the underlying bond matures, during which time interest on the floater is capped at a predetermined rate.

The secondary market for floaters and inverse floaters may be limited. The market value of inverse floaters tends to be significantly more volatile than fixed-rate bonds.

LIBOR Transition Risk

The London Interbank Offered Rate (“LIBOR”) is a benchmark interest rate intended to be representative of the rate at which major international banks who are members of the British Bankers Association lend to one another over short-terms. LIBOR is the most common benchmark interest rate index used to make adjustments to variable-rate loans. Global banking and financial industries use LIBOR to determine interest rates for a variety of financial instruments-such as debt instruments and derivatives-and borrowing arrangements. Following manipulation allegations, the Financial Conduct Authority, the United Kingdom’s financial regulatory body, announced a plan to phase out the use of LIBOR by the end of 2021. Uncertainty remains regarding the future utilization of LIBOR and the specific replacement rate or rates. As such, the potential effects of the transition away from LIBOR on the funds, and the financial instruments they use, is still unknown. The transition process may lead to increased volatility or illiquidity in markets for instruments that currently rely on LIBOR. The transition may also result in a change in the value of certain instruments the funds hold or a change in the cost of temporary borrowing for the funds. When LIBOR is discontinued, the LIBOR replacement rate may be lower than market expectations, which could have an adverse impact on the value of preferred and debt-securities with floating or fixed-to-floating rate coupons. The transition away from LIBOR could result in losses to the funds. If LIBOR becomes less utilized during the transition period, losses could occur prior to the end of 2021.

Loan Participation Notes

In terms of their functioning and investment risk, loan participation notes (“LPNs”) are comparable to an investment in “normal” bonds. In return for the investor’s commitment of capital, the issuer makes regular interest payments and, at maturity or in accordance with an agreed upon amortization schedule, the note is repaid at par.

However, in contrast to “normal” bonds, there are three parties involved in the issuance of an LPN. The legal issuer, typically a bankruptcy-remote, limited purpose entity, issues notes to investors and uses the proceeds received from investors to make loans to the borrower—with each loan generally having substantially identical payment terms to the related note issued by the issuer. The borrower is typically an operating company, and the issuer’s obligations under a note are typically limited to the extent of any capital repayments and interest payments made by the borrower under the related loan. Accordingly, the investor generally assumes the credit risk of the underlying borrower. The loan participation note structure is generally used to provide the borrower more efficient financing in the capital markets than the borrower would be able to obtain if it issued notes directly.

In the event of a default by the borrower of an LPN, the fund may experience delays in receiving payments of interest and principal while the note issuer enforces and liquidates the underlying collateral, and there is no guarantee that the underlying collateral will cover the principal and interest owed to the fund under the LPN.

LPNs are generally subject to liquidity risk. Even though an LPN may be traded on an exchange there can be no assurance that a liquid market will develop for the LPNs, that holders of the LPNs will be able to sell their LPNs, or that such holders will be able to sell their LPNs for a price that reflects their value.

Depending on the creditworthiness of the underlying borrower, LPNs may be subject to the risk of investing in high-yield securities. Additionally, LPNs are generally utilized by foreign borrowers and therefore may be subject to the risk of investing in foreign securities and emerging market risk. Such foreign risk could include interest payments being subject to withholding tax.

Loan Participations

Emerging Markets Debt may purchase loan participations, which represent interests in the cash flow generated by commercial loans. Each loan participation requires three parties: a participant (or investor), a lending bank and a borrower. The investor purchases a share in a loan originated by a lending bank, and this participation entitles the investor to a percentage of the principal and interest payments made by the borrower.

Loan participations are attractive because they typically offer higher yields than other money market instruments. However, along with these higher yields come certain risks, not the least of which is the risk that the borrower will be unable to repay the loan. Generally, because the lending bank does not guarantee payment, the investor is directly exposed to risk of default by the borrower. In addition, the investor is not a direct creditor of the borrower. The participation represents an interest in assets owned by the lending bank. If the lending bank becomes insolvent, the investor could be considered an unsecured creditor of the bank instead of the holder of a participating interest in a loan. Because of these risks, the manager must carefully consider the creditworthiness of both the borrower and the lender.

Another concern is liquidity. Because there is no established secondary market for loan participations, a fund’s ability to sell them for cash is limited. Some participation agreements place limitations on the investor’s right to resell the loan participation, even when a buyer can be found.

Loans of Portfolio Securities

In order to realize additional income, a fund may lend its portfolio securities. Such loans may not exceed one-third of a fund’s total assets valued at market, however, this limitation does not apply to purchases of debt securities in accordance with a fund’s investment objectives, policies and limitations, or to repurchase agreements with respect to portfolio securities.

Cash received from the borrower as collateral through loan transactions may be invested in other eligible securities. Investing this cash subjects that investment to market appreciation or depreciation. If a borrower defaults on a securities loan because of insolvency or other reasons, the lending fund could experience delays or costs in recovering the securities it loaned; if the value of the loaned securities increased over the value of the collateral, a fund could suffer a loss. To minimize the risk of default on securities loans, the advisor adheres to guidelines prescribed by the Board of Trustees governing lending of securities. These guidelines strictly govern:


•	the type and amount of collateral that must be received by the fund;


•	the circumstances under which additions to that collateral must be made by borrowers;


•	the return to be received by the fund on the loaned securities;


•	the limitations on the percentage of fund assets on loan; and


•	the credit standards applied in evaluating potential borrowers of portfolio securities.

In addition, the guidelines require that the fund have the option to terminate any loan of a portfolio security at any time and set requirements for recovery of securities from borrowers.

Mortgage-Related Securities

To the extent permitted by its investment objective, a fund may invest in mortgage-related securities.

Background

A mortgage-backed security represents an ownership interest in a pool of mortgage loans. The loans are made by financial institutions to finance home and other real estate purchases. As the loans are repaid, investors receive payments of both interest and principal.

Like fixed-income securities, mortgage-backed securities pay a stated rate of interest during the life of the security. However, unlike a bond, which returns principal to the investor in one lump sum at maturity, mortgage-backed securities return principal to the investor in increments during the life of the security.

Because the timing and speed of principal repayments vary, the cash flow on mortgage-backed securities is irregular. If mortgage holders sell their homes, refinance their loans, prepay their mortgages or default on their loans, the principal is distributed pro rata to investors.

As with other fixed-income securities, the prices of mortgage-backed securities fluctuate in response to changing interest rates; when interest rates fall, the prices of mortgage-backed securities rise, and vice versa. Changing interest rates have additional significance for mortgage-backed securities investors, however, because they influence prepayment rates (the rates at which mortgage holders prepay their mortgages), which in turn affect the yields on mortgage-backed securities. When interest rates decline, prepayment rates generally increase. Mortgage holders take advantage of the opportunity to refinance their mortgages at lower rates with lower monthly payments. When interest rates rise, mortgage holders are less inclined to refinance their mortgages. The effect of prepayment activity on yield depends on whether the mortgage-backed security was purchased at a premium or at a discount.

A fund may receive principal sooner than it expected because of accelerated prepayments. Under these circumstances, a fund might have to reinvest returned principal at rates lower than it would have earned if principal payments were made on schedule. Conversely, a mortgage-backed security may exceed its anticipated life if prepayment rates decelerate unexpectedly. Under these circumstances, the fund might miss an opportunity to earn interest at higher prevailing rates.

A fund may invest in covered bonds or covered mortgages. Covered bonds are securities issued by a bank and backed by a dedicated group of loans known as a cover pool.

Collateralized Mortgage Obligations (CMOs)

A CMO is a multiclass bond backed by a pool of mortgage pass-through certificates or mortgage loans. In structuring a CMO, an issuer distributes cash flow from the underlying collateral over a series of classes called tranches. Each CMO is a set of two or more tranches, with average lives and cash flow patterns designed to meet specific investment objectives. The average life expectancies of the different tranches in a four-part deal, for example, might be two, five, seven and 20 years.

As payments on the underlying mortgage loans are collected, the CMO issuer pays the coupon rate of interest to the bondholders in each tranche. At the outset, scheduled and unscheduled principal payments go to investors in the first tranches. Investors in later tranches do not begin receiving principal payments until the prior tranches are paid off. This basic type of CMO is known as a sequential pay or plain vanilla CMO.

Some CMOs are structured so that the prepayment or market risks are transferred from one tranche to another. Prepayment stability is improved in some tranches if other tranches absorb more prepayment variability.

The final tranche of a CMO often takes the form of a Z-bond, also known as an accrual bond or accretion bond. Holders of these securities receive no cash until the earlier tranches are paid in full. During the period that the other tranches are outstanding, periodic interest payments are added to the initial face amount of the Z-bond but are not paid to investors. When the prior tranches are retired, the Z-bond receives coupon payments on its higher principal balance plus any principal prepayments from the underlying mortgage loans. The existence of a Z-bond tranche helps stabilize cash flow patterns in the other tranches. In a changing interest rate environment, however, the value of the Z-bond tends to be more volatile.

As CMOs have evolved, some classes of CMO bonds have become more prevalent. The planned amortization class (PAC) and targeted amortization class (TAC), for example, were designed to reduce prepayment risk by establishing a sinking-fund structure. PAC and TAC bonds assure to varying degrees that investors will receive payments over a predetermined period under various prepayment scenarios. Although PAC and TAC bonds are similar, PAC bonds are better able to provide stable cash flows under various prepayment scenarios than TAC bonds because of the order in which these tranches are paid.

The existence of a PAC or TAC tranche can create higher levels of risk for other tranches in the CMO because the stability of the PAC or TAC tranche is achieved by creating at least one other tranche—known as a companion bond, support or non-PAC bond—that absorbs the variability of principal cash flows. Because companion bonds have a high degree of average life variability, they generally pay a higher yield. A TAC bond can have some of the prepayment variability of a companion bond if there is also a PAC bond in the CMO issue.

Floating-rate CMO tranches (floaters) pay a variable rate of interest. Institutional investors with short-term liabilities, such as commercial banks, often find floating-rate CMOs attractive investments. Super floaters and inverse floaters are variations on the floater structure that have highly variable cash flows.

Commercial Mortgage-Backed Securities (CMBS)

CMBS are securities created from a pool of commercial mortgage loans, such as loans for hotels, shopping centers, office buildings, apartment buildings, and the like. Interest and principal payments from these loans are passed on to the investor according to a particular schedule of payments. The credit quality of CMBS depends primarily on the quality of the underlying loans and on the structure of the particular deal. Generally, deals are structured with senior and subordinate classes. Multiple classes may permit the issuance of securities with payment terms, interest rates, or other characteristics differing both from those of each other and those of the underlying assets. Examples include classes having characteristics such as floating interest rates or scheduled amortization of principal. Rating agencies rate the individual classes of the deal based on the degree of seniority or subordination of a particular class and other factors. The value of these securities may change because of actual or perceived changes in the creditworthiness of individual borrowers, their tenants, the servicing agents, or the general state of commercial real estate and other factors.

CMBS may be partially stripped so that each investor class receives some interest and some principal. When securities are completely stripped, however, all of the interest is distributed to holders of one type of security, known as an interest-only security (IO), and all of the principal is distributed to holders of another type of security known as a principal-only security (PO). The funds are permitted to invest in IO classes of CMBS. As interest rates rise and fall, the value of IOs tends to move in the same direction as interest rates. The cash flows and yields on IO classes are extremely sensitive to the rate of principal payments (including prepayments) on the related underlying mortgage assets. In the cases of IOs, prepayments affect the amount of cash flows provided to the investor. If the underlying mortgage assets experience greater than anticipated prepayments of principal, an investor may fail to fully recoup its initial investment in an IO class of a stripped mortgage-backed security, even if the IO class is rated AAA or Aaa or is derived from a full faith and credit obligation. However, because commercial mortgages are often locked out from prepayment, or have high prepayment penalties or a defeasance mechanism, the prepayment risk associated with a CMBS IO class is generally less than that of a residential IO.

Adjustable Rate Mortgage Securities

Adjustable rate mortgage securities (ARMs) have interest rates that reset at periodic intervals. Acquiring ARMs permits a fund to participate in increases in prevailing current interest rates through periodic adjustments in the coupons of mortgages underlying the pool on which ARMs are based. In addition, when prepayments of principal are made on the underlying mortgages during periods of

rising interest rates, a fund can reinvest the proceeds of such prepayments at rates higher than those at which they were previously invested. Mortgages underlying most ARMs, however, have limits on the allowable annual or lifetime increases that can be made in the interest rate that the mortgagor pays. Therefore, if current interest rates rise above such limits over the period of the limitation, a fund holding an ARM does not benefit from further increases in interest rates. Moreover, when interest rates are in excess of coupon rates (i.e., the rates being paid by mortgagors) of the mortgages, ARMs behave more like fixed income securities and less like adjustable rate securities and are subject to the risks associated with fixed income securities. In addition, during periods of rising interest rates, increases in the coupon rate of adjustable rate mortgages generally lag current market interest rates slightly, thereby creating the potential for capital depreciation on such securities.

GNMA Certificates

The Government National Mortgage Association (GNMA) is a wholly owned corporate instrumentality of the United States within the Department of Housing and Urban Development. The National Housing Act of 1934 (Housing Act), as amended, authorizes GNMA to guarantee the timely payment of interest and repayment of principal on certificates that are backed by a pool of mortgage loans insured by the Federal Housing Administration under the Housing Act, or by Title V of the Housing Act of 1949 (FHA Loans), or guaranteed by the Department of Veterans Affairs under the Servicemen’s Readjustment Act of 1944 (VA Loans), as amended, or by pools of other eligible mortgage loans. The Housing Act provides that the full faith and credit of the U.S. government is pledged to the payment of all amounts that may be required to be paid under any guarantee. GNMA has unlimited authority to borrow from the U.S. Treasury in order to meet its obligations under this guarantee.

GNMA certificates represent a pro rata interest in one or more pools of the following types of mortgage loans: (a) fixed-rate level payment mortgage loans; (b) fixed-rate graduated payment mortgage loans (GPMs); (c) fixed-rate growing equity mortgage loans (GEMs); (d) fixed-rate mortgage loans secured by manufactured (mobile) homes (MHs); (e) mortgage loans on multifamily residential properties under construction (CLCs); (f) mortgage loans on completed multifamily projects (PLCs); (g) fixed-rate mortgage loans that use escrowed funds to reduce the borrower’s monthly payments during the early years of the mortgage loans (buydown mortgage loans); and (h) mortgage loans that provide for payment adjustments based on periodic changes in interest rates or in other payment terms of the mortgage loans.

Fannie Mae Certificates

The Federal National Mortgage Association (FNMA or Fannie Mae) is a federally chartered and privately owned corporation established under the Federal National Mortgage Association Charter Act. Fannie Mae was originally established in 1938 as a U.S. government agency designed to provide supplemental liquidity to the mortgage market and was reorganized as a stockholder-owned and privately managed corporation by legislation enacted in 1968. Fannie Mae acquires capital from investors who would not ordinarily invest in mortgage loans directly and thereby expands the total amount of funds available for housing. This money is used to buy home mortgage loans from local lenders, replenishing the supply of capital available for mortgage lending.

Fannie Mae certificates represent a pro rata interest in one or more pools of FHA Loans, VA Loans, or, most commonly, conventional mortgage loans (i.e., mortgage loans that are not insured or guaranteed by a government agency) of the following types: (a) fixed-rate level payment mortgage loans; (b) fixed-rate growing equity mortgage loans; (c) fixed-rate graduated payment mortgage loans; (d) adjustable-rate mortgage loans; and (e) fixed-rate mortgage loans secured by multifamily projects.

Fannie Mae certificates entitle the registered holder to receive amounts representing a pro rata interest in scheduled principal and interest payments (at the certificate’s pass-through rate, which is net of any servicing and guarantee fees on the underlying mortgage loans), any principal prepayments, and a proportionate interest in the full principal amount of any foreclosed or otherwise liquidated mortgage loan. The full and timely payment of interest and repayment of principal on each Fannie Mae certificate is guaranteed by Fannie Mae; this guarantee is not backed by the full faith and credit of the U.S. government. See Recent Events Regarding Fannie Mae and Freddie Mac below.

Freddie Mac Certificates

The Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac) is a corporate instrumentality of the United States created pursuant to the Emergency Home Finance Act of 1970 (FHLMC Act), as amended. Freddie Mac was established primarily for the purpose of increasing the availability of mortgage credit. Its principal activity consists of purchasing first-lien conventional residential mortgage loans (and participation interests in such mortgage loans) and reselling these loans in the form of mortgage-backed securities, primarily Freddie Mac certificates.

Freddie Mac certificates represent a pro rata interest in a group of mortgage loans (a Freddie Mac certificate group) purchased by Freddie Mac. The mortgage loans underlying Freddie Mac certificates consist of fixed- or adjustable-rate mortgage loans with original terms to maturity of between 10 and 30 years, substantially all of which are secured by first-liens on one- to four-family residential properties or multifamily projects. Each mortgage loan must meet standards set forth in the FHLMC Act. A Freddie Mac certificate group may include whole loans, participation interests in whole loans, undivided interests in whole loans, and participations composing another Freddie Mac certificate group.

Freddie Mac guarantees to each registered holder of a Freddie Mac certificate the timely payment of interest at the rate provided for by the certificate. Freddie Mac also guarantees ultimate collection of all principal on the related mortgage loans, without any offset or deduction, but generally does not guarantee the timely repayment of principal. Freddie Mac may remit principal at any time after

default on an underlying mortgage loan, but no later than 30 days following (a) foreclosure sale, (b) payment of a claim by any mortgage insurer, or (c) the expiration of any right of redemption, whichever occurs later, and in any event no later than one year after demand has been made upon the mortgager for accelerated payment of principal. Obligations guaranteed by Freddie Mac are not backed by the full faith and credit pledge of the U.S. government. See Recent Events Regarding Fannie Mae and Freddie Mac below.

Recent Events Regarding Fannie Mae and Freddie Mac

Since September 2008, Fannie Mae and Freddie Mac have operated under a conservatorship administered by the Federal Housing Finance Agency (FHFA). In addition, the U.S. Treasury has entered into senior preferred stock purchase agreements (PSPA) to provide additional financing to Fannie Mae and Freddie Mac. Three amendments have been made to the original agreement and PSPA, each of which has further strengthened the credit worthiness of these entities. The most recent amendment eliminates the requirement to pay a 10% preferred stock dividend in exchange for a quarterly sweep of net worth. This in turn eliminates any need to borrow from the Treasury to pay dividends and was intended to strengthen the financial commitment to these enterprises.

The future status and role of Fannie Mae or Freddie Mac could be impacted by, among other things, the actions taken and restrictions placed on Fannie Mae or Freddie Mac by the FHFA in its role as conservator, the restrictions placed on Fannie Mae’s or Freddie Mac’s operations and activities under the senior preferred stock purchase agreements, market responses to developments at Fannie Mae or Freddie Mac, and future legislative, regulatory, or legal action that alters the operations, ownership, structure and/or mission of Fannie Mae or Freddie Mac, each of which may, in turn, impact the value of, and cash flows on, any securities guaranteed by Fannie Mae and Freddie Mac.

Stripped Mortgage-Backed Securities

Stripped mortgage-backed securities are created by segregating the cash flows from underlying mortgage loans or mortgage securities to create two or more new securities, each with a specified percentage of the underlying security’s principal or interest payments. Mortgage-backed securities may be partially stripped so that each investor class receives some interest and some principal. When securities are completely stripped, however, all of the interest is distributed to holders of one type of security, known as an interest-only security, or IO, and all of the principal is distributed to holders of another type of security known as a principal-only security, or PO. Strips can be created in a pass-through structure or as tranches of a CMO.

The market values of IOs and POs are very sensitive to interest rate and prepayment rate fluctuations. POs, for example, increase (or decrease) in value as interest rates decline (or rise). The price behavior of these securities also depends on whether the mortgage collateral was purchased at a premium or discount to its par value. Prepayments on discount coupon POs generally are much lower than prepayments on premium coupon POs. IOs may be used to hedge a fund’s other investments because prepayments cause the value of an IO strip to move in the opposite direction from other mortgage-backed securities.

To-Be-Announced Mortgage-Backed Securities

To-be-announced (TBA) commitments are forward agreements for the purchase or sale of securities, which are described in greater detail under the heading When-Issued and Forward Commitment Agreements. A fund may gain exposure to mortgage-backed securities through TBA transactions. TBA mortgage-backed securities typically are debt securities structured by agencies such as Fannie Mae and Freddie Mac. In a typical TBA mortgage transaction, certain terms (such as price) are fixed, with delayed payment and delivery on an agreed upon future settlement date. The specific mortgage-backed securities to be delivered are not typically identified at the trade date but the delivered security must meet specified terms (such as issuer, interest rate, and underlying mortgage terms). Consequently, TBA mortgage-backed transactions involve increased interest rate risk because the underlying mortgages may be less favorable at delivery than anticipated. TBA mortgage contracts also involve a risk of loss if the value of the underlying security to be purchased declines prior to delivery date. The yield obtained for such securities may be higher or lower than yields available in the market on delivery date.

Municipal Obligations

The funds may invest in tax-exempt or taxable municipal obligations, which are generally issued by state and local governments or government entities. Interest payments from municipal obligations are generally exempt from federal income tax. Interest payments from certain municipal obligations, however, are subject to federal income tax because of the degree of non-government involvement in the transaction or because federal tax code limitations on the issuance of tax-exempt bonds that benefit private entities have been exceeded. Some typical examples of these taxable municipal obligations include industrial revenue bonds and economic development bonds issued by state or local governments to aid private enterprise. The interest on a taxable municipal bond is often exempt from state taxation in the issuing state. The funds do not expect to be eligible to pass through to shareholders the tax-exempt character of interest on municipal obligations.

Other Investment Companies

A fund may invest in other investment companies, such as closed-end investment companies, unit investment trusts, exchange-traded funds (ETFs) and other open-end investment companies, provided that the investment is consistent with a fund’s investment policies and restrictions. Under the Investment Company Act, a fund’s investment in such securities, subject to certain exceptions, currently is limited to


•	3% of the total voting stock of any one investment company


•	5% of the fund’s total assets with respect to any one investment company and


•	10% of the fund’s total assets in the aggregate.

Such exceptions may include reliance on Section 12(d)(1)(G) and Rule 12d1-2 of the Investment Company Act, which would permit a

fund to invest in affiliated investment companies (other American Century mutual funds and ETFs) and unaffiliated investment

companies in excess of the limitations described above.

A fund’s investments in other investment companies may include money market funds managed by the advisor. Investments in money market funds are not subject to the percentage limitations set forth above.

As a shareholder of another investment company, a fund would bear, along with other shareholders, its pro rata portion of the other investment company’s expenses, including advisory fees. These expenses would be in addition to the management fee that each fund bears directly in connection with its own operations.

ETFs are a type of fund bought and sold on a securities exchange. An ETF trades like common stock and may be actively managed or index-based. A fund may purchase an ETF to temporarily gain exposure to a portion of the U.S. or a foreign market while awaiting purchase of underlying securities, to gain exposure to specific asset classes or sectors, or as a substitute for investing directly in securities. The risks of owning an ETF generally reflect the risks of owning the underlying securities. Additionally, because the price of ETF shares is based on market price rather than net asset value (NAV), shares may trade at a price greater than NAV (a premium) or less than NAV (a discount). A fund may also incur brokerage commissions, as well as the cost of the bid/ask spread, when purchasing or selling ETF shares.

Repurchase Agreements

Each fund may invest in repurchase agreements when they present an attractive short-term return on cash that is not otherwise committed to the purchase of securities pursuant to the investment policies of the fund.

A repurchase agreement occurs when, at the time a fund purchases an interest-bearing obligation, the seller (a bank or a broker-dealer registered under the Securities Exchange Act of 1934) agrees to purchase it on a specified date in the future at an agreed-upon price. The repurchase price reflects an agreed-upon interest rate during the time a fund’s money is invested in the security.

Because the security purchased constitutes collateral for the repurchase obligation, a repurchase agreement can be considered a loan collateralized by the security purchased. A fund’s risk is the seller’s ability to pay the agreed-upon repurchase price on the repurchase date. If the seller defaults, a fund may incur costs in disposing of the collateral, which would reduce the amount realized thereon. If the seller seeks relief under the bankruptcy laws, the disposition of the collateral may be delayed or limited. To the extent the value of the security decreases, a fund could experience a loss.

Each fund will limit repurchase agreement transactions to securities issued by the U.S. government and its agencies and instrumentalities, and will enter into such transactions with those banks and securities dealers who are deemed creditworthy pursuant to criteria adopted by the funds’ advisor.

Repurchase agreements maturing in more than seven days would count toward a fund’s 15% limit on illiquid securities.

Short-Term Securities

In order to meet anticipated redemptions, anticipated purchases of additional securities for a fund’s portfolio, or, in some cases, for temporary defensive purposes, each fund may invest a portion of its assets in money market and other short-term securities.

Examples of those securities include:


•	Securities issued or guaranteed by the U.S. government and its agencies and instrumentalities;


•	Commercial Paper;


•	Certificates of Deposit and Euro Dollar Certificates of Deposit;


•	Bankers’ Acceptances;


•	Short-term notes, bonds, debentures or other debt instruments;


•	Repurchase agreements; and


•	Money market funds.

Swap Agreements

Each fund may invest in swap agreements, consistent with its investment objective and strategies. A fund may enter into a swap agreement in order to, for example, attempt to obtain or preserve a particular return or spread at a lower cost than obtaining a return or spread through purchases and/or sales of instruments in other markets; protect against currency fluctuations; attempt to manage duration to protect against any increase in the price of securities a fund anticipates purchasing at a later date; or gain exposure to certain markets in the most economical way possible.

Swap agreements are two-party contracts entered into primarily by institutional investors for periods ranging from a few weeks to more than one year. In a standard “swap” transaction, two parties agree to exchange the returns (or differentials in rates of return) earned or realized on particular predetermined investments or instruments, which may be adjusted for an interest factor. The gross returns to be exchanged or “swapped” between the parties are generally calculated with respect to a “notional amount,” i.e., the return on or increase in value of a particular dollar amount invested at a particular interest rate, in a particular foreign currency, or in a “basket” of securities representing a particular index. Forms of swap agreements include, for example, interest rate swaps, under which fixed- or floating-rate interest payments on a specific principal amount are exchanged and total return swaps, under which one party agrees to pay the other the total return of a defined underlying asset (usually an index, including inflation indexes, stock, bond or defined portfolio of loans and mortgages) in exchange for fee payments, often a variable stream of cash flows based on LIBOR. A fund may enter into credit default swap agreements to hedge an existing position by purchasing or selling credit protection. Credit default swaps enable an investor to buy/sell protection against a credit event of a specific issuer. The seller of credit protection against a security or basket of securities receives an up-front or periodic payment to compensate against potential default event(s). A fund may enhance returns by selling protection or attempt to mitigate credit risk by buying protection. Market supply and demand factors may cause distortions between the cash securities market and the credit default swap market.

Whether a fund’s use of swap agreements will be successful depends on the advisor’s ability to predict correctly whether certain types of investments are likely to produce greater returns than other investments. Interest rate swaps could result in losses if interest rate changes are not correctly anticipated by the fund. Total return swaps could result in losses if the reference index, security, or investments do not perform as anticipated by the fund. Credit default swaps could result in losses if the fund does not correctly evaluate the creditworthiness of the issuer on which the credit default swap is based. Because they are two-party contracts and because they may have terms of greater than seven days, swap agreements may be considered to be illiquid. Moreover, a fund bears the risk of loss of the amount expected to be received under a swap agreement in the event of the default or bankruptcy of a swap agreement counterparty. The funds will enter into swap agreements only with counterparties that meet certain standards of creditworthiness or that are cleared through a Derivatives Clearing Organization (“DCO”). Certain restrictions imposed on the funds by the Internal Revenue Code may limit the funds’ ability to use swap agreements.

The Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) and related regulatory developments require the clearing and exchange-trading of certain standardized derivative instruments that the CFTC and SEC have defined as “swaps.” The CFTC has implemented mandatory exchange-trading and clearing requirements under the Dodd-Frank Act and the CFTC continues to approve contracts for central clearing. Although exchange trading is designed to decrease counterparty risk, it does not do so entirely because the fund will still be subject to the credit risk of the central clearinghouse. Cleared swaps are subject to margin requirements imposed by both the central clearinghouse and the clearing member FCM. Uncleared swaps are now subject to posting and collecting collateral on a daily basis to secure mark-to-market obligations (variation margin). Requirements for posting of initial margin in connection with OTC derivatives will be phased-in through 2020. These requirements will increase the amount of collateral a fund is required to provide and the costs associated with providing it if a fund is subject to these requirements. Swaps data reporting may subject a fund to administrative costs, and the safeguards established to protect trader anonymity may not function as expected. Exchange trading, central clearing, margin requirements, and data reporting regulations may increase a fund’s cost of hedging risk and, as a result, may affect shareholder returns.

U.S. Government Securities

Each fund may invest in U.S. government securities including bills, notes and bonds issued by the U.S. Treasury and securities issued or guaranteed by agencies or instrumentalities of the U.S. government.

Some U.S. government securities are supported by the direct full faith and credit of the U.S. government; others are supported by the right of the issuer to borrow from the U.S. Treasury; others, such as securities issued by the Federal National Mortgage Association (FNMA), are supported by the discretionary authority of the U.S. government to purchase the agencies’ obligations; and others are supported only by the credit of the issuing or guaranteeing instrumentality. There is no assurance that the U.S. government will provide financial support to an instrumentality it sponsors when it is not obligated by law to do so.

Variable-, Floating- and Auction-Rate Securities

Variable- and floating-rate securities, including floating-rate notes (FRNs), provide for periodic adjustments to the interest rate. The adjustments are generally based on an index-linked formula, or determined through a remarketing process.

These types of securities may be combined with a put or demand feature that permits the fund to demand payment of principal plus accrued interest from the issuer or a financial institution. One example is the variable-rate demand note (VRDN). VRDNs combine a demand feature with an interest rate reset mechanism designed to result in a market value for the security that approximates par. VRDNs are generally designed to meet the requirements of money market fund Rule 2a-7.

Auction Rate Securities (ARS) are variable rate bonds whose interest rates are reset at specified intervals through a Dutch auction process. A Dutch auction is a competitive bidding process designed to determine a single uniform clearing rate that enables purchases and sales of the ARS to take place at par. All accepted bids and holders of the ARS receive the same rate. ARS holders rely on the liquidity generated by the Dutch auction. There is a risk that an auction will fail due to insufficient demand for the securities. If an

auction fails, an ARS may become illiquid until either a subsequent successful auction is conducted, the issuer redeems the issue, or a secondary market develops.

When-Issued and Forward Commitment Agreements

Each fund may sometimes purchase new issues of securities on a when-issued or forward commitment basis in which the transaction price and yield are each fixed at the time the commitment is made, but payment and delivery occur at a future date.

For example, a fund may sell a security and at the same time make a commitment to purchase the same or a comparable security at a future date and specified price. Conversely, a fund may purchase a security and at the same time make a commitment to sell the same or a comparable security at a future date and specified price. These types of transactions are executed simultaneously in what are known as dollar-rolls, buy/sell back transactions, cash and carry, or financing transactions. For example, a broker-dealer may seek to purchase a particular security that a fund owns. A fund will sell that security to the broker-dealer and simultaneously enter into a forward commitment agreement to buy it back at a future date. This type of transaction generates income for the fund if the dealer is willing to execute the transaction at a favorable price in order to acquire a specific security.

When purchasing securities on a when-issued or forward commitment basis, a fund assumes the rights and risks of ownership, including the risks of price and yield fluctuations. Market rates of interest on debt securities at the time of delivery may be higher or lower than those contracted for on the when-issued security. Accordingly, the value of the security may decline prior to delivery, which could result in a loss to a fund. While a fund will make commitments to purchase or sell securities with the intention of actually receiving or delivering them, it may sell the securities before the settlement date if doing so is deemed advisable as a matter of investment strategy.

In purchasing securities on a when-issued or forward commitment basis, a fund will segregate cash, cash equivalents or other appropriate liquid securities on its record in an amount sufficient to meet the purchase price. To the extent a fund remains fully invested or almost fully invested at the same time it has purchased securities on a when-issued basis, there will be greater fluctuations in its net asset value than if it solely set aside cash to pay for when-issued securities. When the time comes to pay for the when-issued securities, a fund will meet its obligations with available cash, through the sale of securities, or, although it would not normally expect to do so, by selling the when-issued securities themselves (which may have a market value greater or less than the fund’s payment obligation). Selling securities to meet when-issued or forward commitment obligations may generate taxable capital gains or losses.

Zero-Coupon, Step-Coupon, Range Floaters and Pay-In-Kind Securities

Emerging Markets Debt may purchase zero-coupon debt securities. Zero-coupon debt securities do not make regular cash interest payments, and are sold at a deep discount to their face value.

Each fund may also purchase step-coupon or step-rate debt securities. Instead of having a fixed coupon for the life of the security, coupon or interest payments may increase to predetermined rates at future dates. The issuer generally retains the right to call the security. Some step-coupon securities are issued with no coupon payments at all during an initial period, and only become interest-bearing at a future date; these securities are sold at a deep discount to their face value.

Finally, Emerging Markets Debt may purchase pay-in-kind securities that do not make regular cash interest payments, but pay interest through the issuance of additional securities. Because such securities do not pay current cash income, the price of these securities can be volatile when interest rates fluctuate.

Although zero-coupon, pay-in-kind and certain range floaters and step-coupon securities may not pay current cash income, federal income tax law requires the holder to include in income each year the portion of any original issue discount and other noncash income on such securities accrued during that year. In order to continue to qualify for treatment as a regulated investment company under the Internal Revenue Code and avoid certain excise tax, the funds are required to make distributions of any original issue discount and other noncash income accrued for each year. Accordingly, the funds may be required to dispose of other portfolio securities, which may occur in periods of adverse market prices, in order to generate a case to meet these distribution requirements.

Investment Policies

Unless otherwise indicated, with the exception of the percentage limitations on borrowing, the policies described below apply at the time a fund enters into a transaction. Accordingly, any later increase or decrease beyond the specified limitation resulting from a change in a fund’s assets will not be considered in determining whether it has complied with its investment policies.

Fundamental Investment Policies

The funds’ fundamental investment policies are set forth below. These investment policies, a fund’s status as diversified, and the investment objective of Global Bond Fund, as set forth in the fund’s prospectus, may not be changed without approval of a majority of the outstanding votes of shareholders of the fund. Under the Investment Company Act, the vote of a majority of the outstanding votes of shareholders means, the vote of (A) 67 percent or more of the voting securities present at a shareholder meeting, if the holders of more than 50 percent of the outstanding voting securities are present or represented by proxy; or (B) more than 50 percent of the outstanding voting securities, whichever is less.



Subject	Policy
Senior Securities	A fund may not issue senior securities, except as permitted under the Investment Company Act.
Borrowing	A fund may not borrow money, except that a fund may borrow for temporary or emergency purposes (not for leveraging or investment) in an amount not exceeding 33⅓% of the fund’s total assets (including the amount borrowed) less liabilities (other than borrowings).
Lending	A fund may not lend any security or make any other loan if, as a result, more than 33⅓% of the fund’s total assets would be lent to other parties, except, (i) through the purchase of debt securities in accordance with its investment objective, policies and limitations or (ii) by engaging in repurchase agreements with respect to portfolio securities.
Real Estate	A fund may not purchase or sell real estate unless acquired as a result of ownership of securities or other instruments. This policy shall not prevent a fund from investing in securities or other instruments backed by real estate or securities of companies that deal in real estate or are engaged in the real estate business.
Concentration	A fund may not concentrate its investments in securities of issuers in a particular industry (other than securities issued or guaranteed by the U.S. government or any of its agencies or instrumentalities).
Underwriting	A fund may not act as an underwriter of securities issued by others, except to the extent that the fund may be considered an underwriter within the meaning of the Securities Act of 1933 in the disposition of restricted securities.
Commodities	A fund may not purchase or sell physical commodities unless acquired as a result of ownership of securities or other instruments provided that this limitation shall not prohibit the fund from purchasing or selling options and futures contracts or from investing in securities or other instruments backed by physical commodities.
Control	A fund may not invest for purposes of exercising control over management.

For purposes of the investment policy relating to senior securities, a fund may borrow from any bank provided that immediately after any such borrowing there is asset coverage of at least 300% for all borrowings of such fund. In the event that such asset coverage falls below 300%, the fund shall, within three days thereafter (not including Sundays and holidays) or such longer period as the SEC may prescribe by rules and regulations, reduce the amount of its borrowings to an extent that the asset coverage of such borrowings is at least 300%. In addition, when a fund enters into certain transactions involving potential leveraging, it will hold offsetting positions or segregate assets to cover such obligations at levels consistent with the guidance of the SEC and its staff.

For purposes of the investment policies relating to lending and borrowing, the funds have received an exemptive order from the SEC regarding an interfund lending program. Under the terms of the exemptive order, the funds may borrow money from or lend money to other American Century Investments-advised funds that permit such transactions. All such transactions will be subject to the limits for borrowing and lending set forth above. The funds will borrow money through the program only when the costs are equal to or lower than the costs of short-term bank loans. Interfund loans and borrowings normally extend only overnight but can have a maximum duration of seven days. The funds will lend through the program only when the returns are higher than those available from other short-term instruments (such as repurchase agreements). The funds may have to borrow from a bank at a higher interest rate if an interfund loan is called or not renewed. Any delay in repayment to a lending fund could result in a lost investment opportunity or additional borrowing costs.

For purposes of the investment policy relating to concentration, a fund shall not purchase any securities that would cause 25% or more of the value of the fund’s net assets at the time of purchase to be invested in the securities of one or more issuers conducting their principal business activities in the same industry, provided that

(a)

there is no limitation with respect to obligations issued or guaranteed by the U.S. government, any state, territory or possession of the United States, the District of Columbia or any of their authorities, agencies, instrumentalities or political subdivisions and repurchase agreements secured by such obligations (except that an Industrial Development Bond backed only by the assets and revenues of a non-governmental user will be deemed to be an investment in the industry represented by such user),


(b)	wholly owned finance companies will be considered to be in the industries of their parents if their activities are primarily related to financing the activities of their parents,


(c)	utilities will be divided according to their services, for example, gas, gas transmission, electric and gas, electric, and telephone will each be considered a separate industry,


(d)	personal credit and business credit businesses will be considered separate industries, and


(e)	for Emerging Markets Debt, each industry will be subclassified by country for concentration purposes.

Nonfundamental Investment Policies

In addition, the funds are subject to the following investment policies that are not fundamental. These policies, along with the investment objectives of Emerging Markets Debt and International Bond, as set forth in each fund’s prospectus, may be changed by the Board of Trustees.



Subject	Policy
Leveraging	A fund may not purchase additional investment securities at any time during which outstanding borrowings exceed 5% of the total assets of the fund.
Liquidity	A fund may not purchase any security or enter into a repurchase agreement if, as a result, more than 15% of its net assets would be invested in illiquid securities. Illiquid securities include repurchase agreements not entitling the holder to payment of principal and interest within seven days and in securities that are illiquid by virtue of legal or contractual restrictions on resale or the absence of a readily available market.
Short Sales	A fund may not sell securities short, unless it owns or has the right to obtain securities equivalent in-kind and amount to the securities sold short, and provided that transactions in futures contracts and options are not deemed to constitute selling securities short.
Margin	A fund may not purchase securities on margin, except to obtain such short-term credits as are necessary for the clearance of transactions, and provided that margin payments and other deposits in connection with transactions involving futures, options (puts, calls, etc.), swaps, short sales, forward contracts, commitment agreements, and other similar investment techniques shall not be deemed to constitute purchasing securities on margin.
Futures and Options	A fund may enter into futures contracts and write and buy put and call options relating to futures contracts. A fund may not, however, enter into leveraged futures transactions if it would be possible for the fund to lose more than the notional value of the investment.
Issuers with Limited Operating Histories	A fund may invest a portion of its assets in the securities of issuers with limited operating histories. An issuer is considered to have a limited operating history if that issuer has a record of less than three years of continuous operation. Periods of capital formation, incubation, consolidations, and research and development may be considered in determining whether a particular issuer has a record of three years of continuous operation.

The Investment Company Act imposes certain additional restrictions upon the funds’ ability to acquire securities issued by insurance companies, broker-dealers, underwriters or investment advisors, and upon transactions with affiliated persons as defined by the Act. It also defines and forbids the creation of cross and circular ownership. Neither the SEC nor any other agency of the federal or state government participates in or supervises the management of the funds or their investment practices or policies.

Temporary Defensive Measures

For temporary defensive purposes, a fund may invest in securities that may not fit its investment objective or its stated market. During a temporary defensive period, a fund may direct its assets to the following investment vehicles:


•	interest-bearing bank accounts or Certificates of Deposit;


•	U.S. government securities and repurchase agreements collateralized by U.S. government securities; and


•	money market funds.

To the extent a fund assumes a defensive position, it may not achieve its investment objective.

Portfolio Turnover

The portfolio turnover rate of each fund for its most recent fiscal year is included in the Fund Summary section of that fund’s prospectus. The portfolio turnover rate for each fund’s last five fiscal years (or shorter period if the fund is less than five years old) is shown in the Financial Highlights tables in the prospectus.

The portfolio manager will sell securities without regard to the length of time the security has been held. Accordingly, the fund’s rate of portfolio turnover may be substantial.

The portfolio managers intend to purchase a particular security whenever they believe it will contribute to the stated objective of a particular fund. In order to achieve each fund’s investment objective, the portfolio managers may sell a given security, regardless of the length of time it has been held in the portfolio, and, regardless of the gain or loss realized on the sale. The managers may sell a portfolio security if they believe that the security is not fulfilling its purpose because, among other things, it did not live up to the managers’ expectations, because it may be replaced with another security holding greater promise, because it has reached its optimum potential, because of a change in the circumstances of a particular company or industry or in general economic conditions, or because of some combination of such reasons.

Because investment decisions are based on a particular security’s anticipated contribution to a fund’s objectives, the managers believe that the rate of portfolio turnover is irrelevant when they determine that a change is required to pursue the fund’s investment objective. As a result, a fund’s annual portfolio turnover rate cannot be anticipated and may be higher than other mutual funds with similar investment objectives. Portfolio turnover also may affect the character of capital gains realized and distributed by the fund, if any, since short-term capital gains are taxable as ordinary income.

Because the managers do not take portfolio turnover rate into account in making investment decisions, (1) the managers have no intention of maintaining any particular rate of portfolio turnover, whether high or low, and (2) the portfolio turnover rates in the past should not be considered as representative of the rates that will be attained in the future.

Variations in a fund’s portfolio turnover rate from year to year may be due to a fluctuating volume of shareholder purchase and redemption activity, varying market conditions, and/or changes in the manager’s investment outlook.

Disclosure of Portfolio Holdings

The advisor (ACIM) has adopted policies and procedures with respect to the disclosure of fund portfolio holdings and characteristics, which are described below.

Distribution to the Public

Month-end full portfolio holdings for each fund will generally be made available for distribution 15 days after the end of each calendar quarter for each of the preceding three months. This disclosure is in addition to the portfolio disclosure in annual and semiannual shareholder reports and the quarter-end portfolio disclosures on Form N-PORT . Such disclosures are filed with the Securities and Exchange Commission within 60 days of each fiscal quarter end and also posted on americancentury.com at approximately the same time the filings are made. The distribution of holdings after the above time periods is not limited.

On a monthly basis, top 10 holdings (on an absolute basis and relative to the appropriate benchmark) for each fund (except AC Alternatives Market Neutral Value Fund, which is limited to the top five pairs by type, as described below) will generally be made available for distribution 7 days after the end of each month, and will be posted on americancentury.com at approximately the same time.

Portfolio characteristics that are derived from portfolio holdings will be made available for distribution 7 days after the end of each month, or as soon thereafter as possible, which timeframe may vary by fund. Certain characteristics, as determined by the advisor, will be posted on americancentury.com monthly at approximately the time they are made available for distribution. Data derived from portfolio returns and any other characteristics not deemed confidential will be available for distribution at any time. The advisor may make determinations of confidentiality on a fund-by-fund basis, and may add or delete characteristics to or from those considered confidential at any time.

Any American Century Investments fund that sells securities short as an investment strategy will disclose full portfolio holdings in annual and semiannual shareholder reports and on Form N-PORT ). These funds will make long and short holdings as of the end of a calendar quarter available for distribution 15 days after the end of each calendar quarter. These funds may also make limited disclosures as noted in the Single Event Requests section below. The distribution of holdings after the above time periods is not limited.

Examples of securities (both long and short) currently or previously held in a portfolio may be included in presentations or other marketing documents as soon as available. The inclusion of such examples is at the relevant portfolio’s team discretion.

So long as portfolio holdings are disclosed in accordance with the above parameters, the advisor makes no distinction among different categories of recipients, such as individual investors, institutional investors, intermediaries that distribute the funds’ shares, third-party service providers, rating and ranking organizations, and fund affiliates. Because this information is publicly available and widely disseminated, the advisor places no conditions or restrictions on, and does not monitor, its use. Nor does the advisor require special authorization for its disclosure.

Accelerated Disclosure

The advisor recognizes that certain parties, in addition to the advisor and its affiliates, may have legitimate needs for information about portfolio holdings and characteristics prior to the times prescribed above. Such accelerated disclosure is permitted under the circumstances described below.

Ongoing Arrangements

Certain parties, such as investment consultants who provide regular analysis of fund portfolios for their clients and intermediaries who pass through information to fund shareholders, may have legitimate needs for accelerated disclosure. These needs may include, for example, the preparation of reports for customers who invest in the funds, the creation of analyses of fund characteristics for intermediary or consultant clients, the reformatting of data for distribution to the intermediary’s or consultant’s clients, and the review of fund performance for ERISA fiduciary purposes.

In such cases, accelerated disclosure is permitted if the service provider enters an appropriate non-disclosure agreement with the fund’s distributor in which it agrees to treat the information confidentially until the public distribution date and represents that the information will be used only for the legitimate services provided to its clients (i.e., not for trading). Non-disclosure agreements require the approval of an attorney in the advisor’s legal department. The advisor’s compliance department receives quarterly reports detailing which clients received accelerated disclosure, what they received, when they received it and the purposes of such disclosure. Compliance personnel are required to confirm that an appropriate non-disclosure agreement has been obtained from each recipient identified in the reports.

Those parties who have entered into non-disclosure agreements as of December 31, 2019 , are as follows:


•	Aetna Inc.


•	Alight Solutions LLC


•	AllianceBernstein L.P.


•	American Fidelity Assurance Co.


•	Ameritas Life Insurance Corporation


•	AMP Capital Investors Limited


•	Annuity Investors Life Insurance Company


•	Aon Hewitt Investment Consulting


•	Athene Annuity & Life Assurance Company


•	AUL/American United Life Insurance Company


•	AXA Equitable Funds Management Group, LLC


•	Bell Globemedia Publishing


•	Bellwether Consulting, LLC


•	BNY Mellon Performance & Risk Analytics, LLC


•	Brighthouse Life Insurance Company


•	Callan Associates, Inc.


•	Calvert Asset Management Company, Inc.


•	Cambridge Associates, LLC


•	Cambridge Financial Services, Inc.


•	Capital Cities, LLC


•	Charles Schwab & Co., Inc.


•	Clearwater Analytics, LLC


•	Cleary Gull Inc.


•	Commerce Bank


•	Connecticut General Life Insurance Company


•	Corestone Investment Managers AG


•	Corning Incorporated


•	Curcio Webb LLC


•	Deutsche AM Distributors, Inc.


•	Eckler Partners Ltd.


•	Electra Information Systems, Inc.


•	EquiTrust Life Insurance Company


•	Farm Bureau Life Insurance Company


•	FCA US LLC


•	Fidelity Workplace Services, LLC


•	FIL Investment Management


•	Finance-Doc Multimanagement AG


•	Fund Evaluation Group, LLC


•	Gavion, LLC


•	Government Employees Pension Service


•	Great-West Financial Retirement Plan Services, LLC


•	The Guardian Life Insurance Company of America


•	ICMA Retirement Corporation


•	Intel Corporation


•	InvesTrust Consulting, LLC


•	Iron Capital Advisors


•	Jefferson National Life Insurance Company


•	JLT Investment Management Limited


•	John Hancock Financial Services, Inc.


•	Kansas City Life Insurance Company


•	Kiwoom Asset Management


•	Kmotion, Inc.


•	Korea Investment Management Co. Ltd.


•	Korea Teachers Pension


•	Legal Super Pty Ltd.


•	The Lincoln National Life Insurance Company


•	Lipper Inc.


•	Marquette Associates


•	Massachusetts Mutual Life Insurance Company


•	Mercer Investment Management, Inc.


•	Merrill Lynch


•	Midland National Life Insurance Company


•	Minnesota Life Insurance Company


•	Modern Woodmen of America


•	Montana Board of Investments


•	Morgan Stanley Smith Barney LLC


•	Morningstar Investment Management LLC


•	Morningstar, Inc.


•	Morningstar Investment Services, Inc.


•	MUFG Union Bank, NA


•	Mutual of America Life Insurance Company


•	National Life Insurance Company


•	Nationwide Financial


•	NEPC


•	The Newport Group


•	Nomura Asset Management U.S.A. Inc.


•	Nomura Securities International, Inc.


•	The Northern Trust Company


•	Northwestern Mutual Life Insurance Co.


•	NYLIFE Distributors, LLC


•	Old Mutual Global Investors (UK) Limited


•	Pacific Life Insurance Company


•	Pavilion Advisory Group Inc.


•	Principal Life Insurance Company


•	Prudential Financial


•	RidgeWorth Capital Management, Inc.


•	Rocaton Investment Advisors, LLC


•	RSM US Wealth Management LLC


•	RVK, Inc.


•	S&P Financial Communications


•	Security Benefit Life Insurance Co.


•	Shinhan BNP Paribas Asset Management


•	SP-Fund Management Ltd.


•	State Street Global Exchange


•	SunTrust Bank


•	Symetra Life Insurance Company


•	Tokio Marine Asset Management Co., Ltd.


•	Towers Watson Investment Services, Inc.


•	Towers Watson Limited


•	UBS Financial Services, Inc.


•	UBS Wealth Management


•	Valic Financial Advisors Inc.


•	VALIC Retirement Services Company


•	Vestek Systems, Inc.


•	Voya Retirement Insurance and Annuity Company


•	Wells Fargo Bank, N.A.


•	Wilshire Associates Incorporated


•	Zeno Consulting Group, LLC

Once a party has executed a non-disclosure agreement, it may receive any or all of the following data for funds in which its clients have investments or are actively considering investment:

(1) Full holdings (both long and short) quarterly as soon as reasonably available;

(2) Full holdings (long only) monthly as soon as reasonably available;

(3) Top 10 holdings (top 5 pairs for each type for AC Alternatives Market Neutral Value Fund) monthly as soon as reasonably available; and

(4) Portfolio attributes (such as sector or country weights), characteristics and performance attribution monthly as soon as reasonably available.

The types, frequency and timing of disclosure to such parties vary.

Single Event Requests

In certain circumstances, the advisor may provide fund holding information on an accelerated basis outside of an ongoing arrangement with manager-level or higher authorization. For example, from time to time the advisor may receive requests for proposals (RFPs) from consultants or potential clients that request information about a fund’s holdings on an accelerated basis. As long as such requests are on a one-time basis, and do not result in continued receipt of data, such information may be provided in the RFP. In these circumstances, top 15 long and short holdings may be disclosed 7 days after the end of each month. Such disclosure may be presented in paired trades, such as by showing a long holding in one sector or security and a corresponding short holding in another sector or security together to show a long/short strategy. Such information will be provided with a confidentiality legend and only in cases where the advisor has reason to believe that the data will be used only for legitimate purposes and not for trading.

Service Providers

Various service providers to the fund and the fund’s advisor must have access to some or all of the fund’s portfolio holdings information on an accelerated basis from time to time in the ordinary course of providing services to the funds. These service providers include the fund’s custodian (daily, with no lag), auditors (as needed) and brokers involved in the execution of fund trades (as needed). Additional information about these service providers and their relationships with the fund and the advisor are provided elsewhere in this statement of additional information. In addition, the fund’s investment advisor may use analytical systems provided by third party data aggregators who have access to the fund’s portfolio holdings daily, with no lag. These data aggregators enter into separate non-disclosure agreements after authorization by an appropriate officer of the advisor. The agreements with service providers and data aggregators generally require that they treat the funds’ portfolio holdings information confidentially until the public distribution date and represent that the information will be used only for the legitimate services it provides (i.e., not for trading).

Additional Safeguards

The advisor’s policies and procedures include a number of safeguards designed to control disclosure of portfolio holdings and characteristics so that such disclosure is consistent with the best interests of fund shareholders, including procedures to address conflicts between the interests of shareholders and those of the advisor and its affiliates. First, the frequency with which this information is disclosed to the public, and the length of time between the date of the information and the date on which the information is disclosed, are selected to minimize the possibility of a third party improperly benefiting from fund investment decisions to the detriment of fund shareholders. In the event that a request for portfolio holdings or characteristics creates a potential conflict of interest that is not addressed by the safeguards and procedures described above, the advisor’s procedures require that such requests may only be granted with the approval of the advisor’s legal department and the relevant chief investment officers. In addition, distribution of portfolio holdings information, including compliance with the advisor’s policies and the resolution of any potential conflicts that may arise, is monitored quarterly by the advisor’s compliance department. Finally, the funds’ Board of Trustees exercises

oversight of disclosure of the funds’ portfolio securities. The board has received and reviewed a summary of the advisor’s policy and is informed on a quarterly basis of any changes to or violations of such policy detected during the prior quarter.

Neither the advisor nor the funds receive any compensation from any party for the distribution of portfolio holdings information.

The advisor reserves the right to change its policies and procedures with respect to the distribution of portfolio holdings information at any time. There is no guarantee that these policies and procedures will protect the funds from the potential misuse of holdings information by individuals or firms in possession of such information.

Management

Board of Trustees

The individuals listed below serve as trustees of the funds. Each trustee will continue to serve in this capacity until death, retirement, resignation or removal from office. The board has adopted a mandatory retirement age for trustees who are not “interested persons,” as that term is defined in the Investment Company Act (independent trustees). Independent trustees shall retire on December 31 of the year in which they reach their 75^th birthday; provided, however, that on or after January 1, 2022, independent trustees shall retire on December 31 of the year in which they reach their 76^th birthday.

Jonathan S. Thomas is an “interested person” because he currently serves as President and Chief Executive Officer of American Century Companies, Inc. (ACC), the parent company of American Century Investment Management, Inc. (ACIM or the advisor). The other trustees (more than three-fourths of the total number) are independent. They are not employees, directors or officers of, and have no financial interest in, ACC or any of its wholly owned, direct or indirect, subsidiaries, including ACIM, American Century Investment Services, Inc. (ACIS) and American Century Services, LLC (ACS), and they do not have any other affiliations, positions or relationships that would cause them to be considered “interested persons” under the Investment Company Act. The trustees serve in this capacity for eight (in the case of Jonathan S. Thomas, 16; and Ronald J. Gilson, 9) registered investment companies in the American Century Investments family of funds.

The following table presents additional information about the trustees. The mailing address for each trustee other than Jonathan S. Thomas is 1665 Charleston Road, Mountain View, California 94043. The mailing address for Jonathan S. Thomas is 4500 Main Street, Kansas City, Missouri 64111.



Name (Year of Birth)	Position(s) Held with Funds	Length of Time Served	Principal Occupation(s) During Past 5 Years	Number of American Century Portfolios Overseen by Trustee	Other Directorships Held During Past 5 Years
Independent Trustees
Tanya S. Beder (1955)	Trustee	Since 2011	Chairman and CEO, SBCC Group Inc. (independent advisory services) (2006 to present)	38	CYS Investments, Inc.; Kirby Corporation; Nabors Industries Ltd.
Jeremy I. Bulow (1954)	Trustee	Since 2011	Professor of Economics, Stanford University, Graduate School of Business (1979 to present)	38	None
Anne Casscells (1958)	Trustee	Since 2016	Co-Chief Executive Officer and Chief Investment Officer, Aetos Alternatives Management (investment advisory firm) (2001-present); Lecturer in Accounting, Stanford University, Graduate School of Business (2009 to 2017)	38	None
Ronald J. Gilson (1946)	Trustee and Chairman of the Board	Since 1995 (Chairman since 2005)	Charles J. Meyers Professor of Law and Business, Emeritus, Stanford Law School (1979 to 2016); Marc and Eva Stern Professor of Law and Business, Columbia University School of Law (1992 to present)	55	None



Name (Year of Birth)	Position(s) Held with Funds	Length of Time Served	Principal Occupation(s) During Past 5 Years	Number of American Century Portfolios Overseen by Trustee	Other Directorships Held During Past 5 Years
Frederick L. A. Grauer (1946)	Trustee	Since 2008	Senior Advisor, Credit Sesame, Inc. (credit monitoring firm) (2018 to present); Senior Advisor, Course Hero (an educational technology company) (2015 to present); Senior Advisor, iShares by BlackRock, Inc. (investment management firm) (2013 to 2015)	38	None
Jonathan D. Levin (1972)	Trustee	Since 2016	Philip H. Knight Professor and Dean, Graduate School of Business, Stanford University (2016 to present); Professor, Stanford University (2000 to present);	38	None
Peter F. Pervere (1947)	Trustee	Since 2007	Retired	38	None
John B. Shoven (1947)	Trustee	Since 2002	Charles R. Schwab Professor of Economics, Stanford University (1973 to present, emeritus since 2019)	38	Cadence Design Systems; E^xponent; Financial Engines
Interested Trustee
Jonathan S. Thomas (1963)	Trustee	Since 2007	President and Chief Executive Officer, ACC (2007 to present). Also serves as Chief Executive Officer, ACS; Executive Vice President, ACIM; Director, ACC, ACIM and other ACC subsidiaries	118	None

Qualifications of Trustees

Generally, no one factor was decisive in the selection of the trustees to the board. Qualifications considered by the board to be important to the selection and retention of trustees include the following: (i) the individual’s business and professional experience and accomplishments; (ii) the individual’s educational background and accomplishments; (iii) the individual’s experience and expertise performing senior policy-making functions in business, government, education, accounting, law and/or administration; (iv) how the individual’s expertise and experience would contribute to the mix of relevant skills and experience on the board; (v) the individual’s ability to work effectively with the other members of the board; and (vi) the individual’s ability and willingness to make the time commitment necessary to serve as an effective trustee. In addition, the individuals’ ability to review and critically evaluate information, their ability to evaluate fund service providers, their ability to exercise good business judgment on behalf of fund shareholders, their prior service on the board, and their familiarity with the funds are considered important assets.

While the board has not adopted a specific policy on diversity, it takes overall diversity into account when considering and evaluating nominees for trustee. The board generally considers the manner in which each trustee’s professional experience, background, skills, and other individual attributes will contribute to the effectiveness of the board. Additional information about each trustee’s individual educational and professional experience (supplementing the information provided in the table above) follows.

Tanya S. Beder: BA, Yale University; MBA, Harvard University; Fellow in Practice, International Center for Finance, Yale University, School of Management; Lecturer in Public Policy, Stanford University; formerly, Chief Executive Officer, Tribeca Global Management LLC (asset management firm); formerly, Managing Director and Head of Strategic Quantitative Investment Division, Caxton Associates LLC; formerly, President and Co-Founder, Capital Market Risk Advisors Inc.; formerly Founder and Chief Executive Officer, SB Consulting Corp.

Jeremy I. Bulow: BA, MA, Yale University; PhD, Massachusetts Institute of Technology; formerly, Director, Bureau of Economics, Federal Trade Commission

Anne Casscells: BA in British Studies, Yale University; MBA, Stanford Graduate School of Business; formerly Chief Investment Officer and Managing Director of Investment Policy Research, Stanford Management Company; formerly Vice President, Fixed Income Division, Goldman Sachs

Ronald J. Gilson: BA, Washington University; JD, Yale Law School; formerly, Attorney, Steinhart, Goldberg, Feigenbaum & Ladar

Frederick L.A. Grauer: BA in Economics, University of British Columbia; MA in Economics, University of Chicago; PhD in Business, Stanford University; formerly, Executive Chairman and Senior Advisor, Barclays Global Investors; Chairman and Chief Executive Officer, Wells Fargo Nikko Investment Advisors; and Vice President, Merrill Lynch Capital Markets Group; formerly, Faculty Member, Graduate School of Business, Columbia University and Alfred P. Sloan School of Management, Massachusetts Institute of Technology

Jonathan D. Levin: BA in English, BS in Mathematics, Stanford University; MPhil in Economics, Oxford University; PhD in Economics, Massachusetts Institute of Technology; Director of the Industrial Organization Program, National Bureau of Economic Research (2014-present); Senior Fellow, Stanford Institute for Economic Policy Research (2009 to present); formerly, Chair, Department of Economics, Stanford Univeristy

Peter F. Pervere: BA in History, Stanford University; CPA; formerly, Vice President and Chief Financial Officer, Commerce One, Inc. (software and services provider); formerly, Vice President and Corporate Controller, Sybase, Inc.; formerly with accounting firm of Arthur Young & Co.

John B. Shoven: BA in Physics, University of California; PhD in Economics, Yale University; formerly, Director of the Stanford Institute for Economic Policy Research; formerly, Chair of Economics and Dean of Humanities and Sciences, Stanford University

Jonathan S. Thomas: BA in Economics, University of Massachusetts; MBA, Boston College; formerly held senior leadership roles with Fidelity Investments, Boston Financial Services, Bank of America and Morgan Stanley; serves on the Board of Governors of the Investment Company Institute

Responsibilities of the Board

The board is responsible for overseeing the advisor’s management and operations of the fund pursuant to the management agreement. Trustees also have significant responsibilities under the federal securities laws. Among other things, they:


•	oversee the performance of the funds;


•	oversee the quality of the advisory and shareholder services provided by the advisor;


•	review annually the fees paid to the advisor for its services;


•	monitor potential conflicts of interest between the funds and their affiliates, including the advisor;


•	oversee custody of assets and the valuation of securities; and


•	oversee the funds’ compliance program.

In performing their duties, board members receive detailed information about the funds and the advisor regularly throughout the year, and they meet in person at least quarterly with management of the advisor to review reports about fund operations. Certain Board committee members also hold periodic telephone conferences with management between quarterly board meetings. The trustees’ role is to provide oversight and not to provide day-to-day management.

The board has all powers necessary or convenient to carry out its responsibilities. Consequently, the board may adopt bylaws providing for the regulation and management of the affairs of the funds and may amend and repeal them to the extent that such bylaws do not reserve that right to the funds’ shareholders. They may increase or reduce the number of board members and may, subject to the Investment Company Act, fill board vacancies. Board members also may elect and remove such officers and appoint and terminate such agents as they consider appropriate. They may establish and terminate committees consisting of two or more trustees who may exercise the powers and authority of the board as determined by the trustees. They may, in general, delegate such authority as they consider desirable to any officer of the funds, to any board committee and to any agent or employee of the funds or to any custodian, transfer agent, investor servicing agent, principal underwriter or other service provider for a fund.

To communicate with the board, or a member of the board, a shareholder should send a written communication addressed to the board or member of the board to the attention of the Corporate Secretary at the following address: P.O. Box 418210, Kansas City, Missouri 64141-9210. Shareholders who prefer to communicate by email may send their comments to corporatesecretary@americancentury.com. All shareholder communications received will be forwarded to the board or to the independent chairman of such board.

Board Leadership Structure and Standing Board Committees

Ronald J. Gilson currently serves as the independent chairman of the board and has served in such capacity since 2005. Of the board’s members, Jonathan S. Thomas is the only member who is an “interested person” as that term is defined in the Investment Company Act. The remaining members are independent trustees. The independent trustees meet separately to consider a variety of matters that are scheduled to come before the board and meet periodically with the fund’s Chief Compliance Officer and fund auditors. They are advised by independent legal counsel. No independent trustee may serve as an officer or employee of a fund. The board has also established several committees, as described below. Each committee is comprised solely of independent trustees. The board believes that the current leadership structure, with independent trustees filling all but one position on the board, with an independent trustee serving as chairman of the board and with the board committees comprised only of independent trustees, is appropriate and allows for independent oversight of the fund.

The board has an Audit and Compliance Committee that approves the funds’ engagement of the independent registered public accounting firm and recommends approval of such engagement to the independent trustees. The committee also oversees the activities of the accounting firm, receives regular reports regarding fund accounting, oversees securities valuation (approving the funds’ or the trust’s valuation policy and receiving reports regarding instances of fair valuation thereunder), and receives regular reports from the advisor’s internal audit department. The committee also reviews the results of the funds’ compliance testing program, meets regularly with the fund’s Chief Compliance Officer, and monitors implementation of the funds’ Code of Ethics. The committee currently consists of Peter F. Pervere (chair), Tanya S. Beder, Anne Casscells and Ronald J. Gilson. The committee met four times during the funds’ fiscal year ended October 31, 2019 .

The board also has a Portfolio Committee that meets quarterly to review the investment activities and strategies used to manage the funds’ assets and monitor investment performance. The committee regularly receives reports from the advisor’s Chief Investment Officer, portfolio managers, credit analysts and other investment personnel concerning the funds’ investments. The committee also receives information regarding fund trading activities and monitors derivative usage. It currently consists of Jeremy I. Bulow (chair), Tanya S. Beder, Anne Casscells and Frederick L.A. Grauer. The committee met four times during the funds’ fiscal year ended October 31, 2019 .

The Client Experience Oversight Committee monitors the quality of services that the funds offer both to direct customers and to intermediaries who offer fund shares to their customers. All channels of communication (written, telephone, web and mobile) are reviewed. The level of performance is compared to peer competitors. The committee also monitors payments to intermediaries and trading in fund shares that could harm the interests of other shareholders and reviews future strategic initiatives of the advisor and their potential effects on fund shareholders. The committee currently consists of John B. Shoven (chair), Ronald J. Gilson, Frederick L.A. Grauer, Jonathan D. Levin and Peter F. Pervere. The committee met four times during the funds’ fiscal year ended October 31, 2019 .

The Technology and Risk Committee coordinates the board’s oversight of the funds’ risk management processes and monitors the systems, practices and procedures the advisor uses to manage the funds’ risks. In addition, the committee oversees enterprise technology risk management and the advisor’s processes for oversight of vendors that provide critical services or technologies to the funds or on which the advisor relies in providing services to the funds. It also makes recommendations to the board regarding the allocation of risk oversight activities among the board’s committees. The committee currently consists of Tanya S. Beder (chair), Jeremy I. Bulow, Ronald J. Gilson (ex officio) and Frederick L.A. Grauer. The committee met four times during the funds’ fiscal year ended October 31, 2019 .

The board has a Corporate Governance Committee that is responsible for reviewing board procedures and committee structures. The committee also considers and recommends individuals for nomination as trustees. The names of potential trustee candidates may be drawn from a number of sources, including recommendations from members of the board, the advisor (in the case of interested trustees only), shareholders and third party search firms. The committee seeks to identify and recruit the best available candidates and will evaluate qualified shareholder nominees on the same basis as those identified through other sources. Although not written, the fund has a policy of considering all candidates recommended in writing by shareholders. Shareholders may submit trustee nominations in writing to the Corporate Secretary, P.O. Box 418210, Kansas City, Missouri 64141-9210, or by email to corporatesecretary@americancentury.com. The nomination should include the following information:


•	Shareholder’s name, the fund name, number of fund shares owned and length of period held;


•	Name, age and address of the candidate;


•	A detailed resume describing, among other things, the candidate’s educational background, occupation, employment history, financial knowledge and expertise and material outside commitments (e.g., memberships on other boards and committees, charitable foundations, etc.);


•	Any other information relating to the candidate that is required to be disclosed in solicitations of proxies for election of trustees in an election contest pursuant to Regulation 14A under the Securities Exchange Act of 1934;


•	A supporting statement that (i) describes the candidate’s reasons for seeking election to the board and(ii) documents his/her qualifications to serve as a trustee; and


•	A signed statement from the candidate confirming his/her willingness to serve on the board.

The Corporate Governance Committee also may consider, and make recommendations to the board regarding, other matters relating to the corporate governance of the funds. It currently consists of Frederick L.A. Grauer (chair), Jeremy I. Bulow, Ronald J. Gilson (ex officio) and John B. Shoven. The committee met four times during the funds’ fiscal year ended October 31, 2019 .

Risk Oversight by the Board

As previously disclosed, the board oversees the advisor’s management of the funds and meets at least quarterly with management of the advisor to review reports and receive information regarding fund operations. Risk oversight relating to the funds is one component of the board’s oversight and is undertaken in connection with the duties of the board. As described in the previous section, the board’s committees, including the Technology and Risk Committee, assist the board in overseeing various types of risks relating to the funds. The board receives regular reports from each committee regarding the committee’s areas of oversight responsibility. In addition, the

board receives information regarding, and has discussions with senior management of the advisor about, the advisor’s enterprise risk management systems and strategies. There can be no assurance that all elements of risk, or even all elements of material risk, will be disclosed to or identified by the board, or that the advisor’s risk management systems and strategies, and the board’s oversight thereof, will mitigate all elements of risk, or even all elements of material risk, to the funds.

Board Compensation

Each independent trustee receives compensation for service as a member of the board. Under the terms of each management agreement with the advisor, the funds are responsible for paying such fees and expenses. None of the interested trustees or officers of the funds receive compensation from the funds. For the fiscal year ended October 31, 2019 , each independent trustee received the following compensation for his or her service to the funds and the American Century family of funds.



Name of Trustee	Total Compensation for Service as Trustee of the Funds¹	Total Compensation for Service as Directors/Trustees for the American Century Investments Family of Funds²
Tanya S. Beder	$15,806	$270,000
Jeremy I. Bulow	$16,099	$275,000
Anne Casscells	$15,221	$260,000
Ronald J. Gilson	$21,660	$405,000
Frederick L.A. Grauer	$15,806	$270,000
Jonathan D. Levin	$15,221	$260,000
Peter F. Pervere	$16,392	$280,000
John B. Shoven	$15,806	$270,000


¹	Includes compensation paid to the trustees for fiscal year ended October 31, 2019 , and also includes amounts deferred at the election of the trustees under the American Century Mutual Funds’ Independent Directors’ Deferred Compensation Plan.


²	Includes compensation paid to each trustee for his or her service as director/trustee for eight (in the case of Mr. Gilson, nine) investment companies in the American Century Investments family of funds. The total amount of deferred compensation included in the table is as follows: Ms. Casscells, $ 260,000 ; and Mr. Pervere, $ 28,000 .

None of the funds currently provides any pension or retirement benefits to the trustees except pursuant to the American Century Mutual Funds’ Independent Directors’ Deferred Compensation Plan adopted by the trust. Under the plan, the independent trustees may defer receipt of all or any part of the fees to be paid to them for serving as trustees of the funds. All deferred fees are credited to accounts established in the names of the trustees. The amounts credited to each account then increase or decrease, as the case may be, in accordance with the performance of one or more American Century funds selected by the trustees. The account balance continues to fluctuate in accordance with the performance of the selected fund or funds until final payment of all amounts credited to the account. Trustees are allowed to change their designation of funds from time to time.

Generally, deferred fees are not payable to a trustee until the distribution date elected by the trustee in accordance with the terms of the plan. Such distribution date may be a date on or after the trustee’s retirement date, but may be an earlier date if the trustee agrees not to make any additional deferrals after such distribution date. Distributions may commence prior to the elected payment date for certain reasons specified in the plan, such as unforeseeable emergencies, death or disability. Trustees may receive deferred fee account balances either in a lump sum payment or in substantially equal installment payments to be made over a period not to exceed 10 years. Upon the death of a trustee, all remaining deferred fee account balances are paid to the trustee’s beneficiary or, if none, to the trustee’s estate.

The plan is an unfunded plan and, accordingly, the funds have no obligation to segregate assets to secure or fund the deferred fees. To date, the funds have met all payment obligations under the plan. The rights of trustees to receive their deferred fee account balances are the same as the rights of a general unsecured creditor of the fund. The plan may be terminated at any time by the administrative committee of the plan. If terminated, all deferred fee account balances will be paid in a lump sum.

Ownership of Fund Shares

The trustees owned shares in the funds as of December 31, 2019 , as shown in the table below.



	Name of Trustee
	Jonathan S. Thomas	Tanya S. Beder	Jeremy I. Bulow	Anne Casscells	Ronald J. Gilson
Dollar Range of Equity Securities in the Fund:
Emerging Markets Debt	A	A	A	A	A
Global Bond	A	A	A	A	A
International Bond	A	A	A	A	A
Aggregate Dollar Range of Equity Securities in all Registered Investment Companies Overseen by Trustees in Family of Investment Companies	E	E	B	E	E

Ranges: A—none, B—$1-$10,000, C—$10,001-$50,000, D—$50,001-$100,000, E—More than $100,000



	Name of Trustee
	Frederick L.A. Grauer	Jonathan D. Levin	Peter F. Pervere	John B. Shoven
Dollar Range of Equity Securities in the Fund:
Emerging Markets Debt	A	A	A	A
Global Bond	A	A	A	A
International Bond	A	A	A	A
Aggregate Dollar Range of Equity Securities in all Registered Investment Companies Overseen by Trustees in Family of Investment Companies	A	A	E	E

Ranges: A—none, B—$1-$10,000, C—$10,001-$50,000, D—$50,001-$100,000, E—More than $100,000

Beneficial Ownership of Affiliates by Independent Trustees

No independent trustee or his or her immediate family members beneficially owned shares of the advisor, the principal underwriter of the funds or any other person directly or indirectly controlling, controlled by, or under common control with the advisor or the funds’ principal underwriter as of December 31, 2019 .

Officers

The following table presents certain information about the executive officers of the funds. Each officer serves as an officer for 16 (in the case of Robert J. Leach, 15) investment companies in the American Century family of funds. No officer is compensated for his or her service as an officer of the funds. The listed officers are interested persons of the funds and are appointed or re-appointed on an annual basis. The mailing address for each of the officers listed below is 4500 Main Street, Kansas City, Missouri 64111.



Name (Year of Birth)	Offices with the Funds	Principal Occupation(s) During the Past Five Years
Patrick Bannigan (1965)	President since 2019	Executive Vice President and Director, ACC (2012 to present); Chief Financial Officer, Chief Accounting Officer and Treasurer, ACC (2015 to present); Chief Operating Officer, ACC (2012-2015). Also serves as President, ACS; Vice President, ACIM; Chief Financial Officer, Chief Accounting Officer and/or Director, ACIM, ACS and other ACC subsidiaries
R. Wes Campbell (1974)	Chief Financial Officer and Treasurer since 2018	Investment Operations and Investment Accounting, ACS (2000 to present)
Amy D. Shelton (1964)	Chief Compliance Officer and Vice President since 2014	Chief Compliance Officer, American Century funds, (2014 to present); Chief Compliance Officer, ACIM (2014 to present); Chief Compliance Officer, ACIS (2009 to present). Also serves as Vice President, ACIS



Name (Year of Birth)	Offices with the Funds	Principal Occupation(s) During the Past Five Years
Charles A. Etherington (1957)	General Counsel since 2007 and Senior Vice President since 2006	Attorney, ACC (1994 to present); Vice President, ACC (2005 to present); General Counsel, ACC (2007 to present). Also serves as General Counsel, ACIM, ACS, ACIS and other ACC subsidiaries; and Senior Vice President, ACIM and ACS
C. Jean Wade (1964)	Vice President since 2012	Senior Vice President, ACS (2017 to present); Vice President ACS (2000 to 2017)
Robert J. Leach (1966)	Vice President since 2006	Vice President, ACS (2000 to present)
David H. Reinmiller (1963)	Vice President since 2000	Attorney, ACC (1994 to present). Also serves as Vice President, ACIM and ACS
Ward D. Stauffer (1960)	Secretary since 2005	Attorney, ACC (June 2003 to present)

Code of Ethics

The funds, their investment advisor and principal underwriter have adopted codes of ethics under Rule 17j-1 of the Investment Company Act. They permit personnel subject to the codes to invest in securities, including securities that may be purchased or held by the funds, provided that they first obtain approval from the compliance department before making such investments.

Proxy Voting Policies

The funds’ Board of Trustees has adopted a general statement of proxy voting principles that governs the exercise of voting and consent rights associated with the securities purchased and/or held by the funds. The funds have delegated to the advisor the responsibility for exercising such rights, subject to the board’s oversight. The advisor has adopted proxy voting policies that describe in detail how the advisor intends to exercise its delegated proxy voting authority in a manner consistent with the board’s principles.

Copies of the advisor’s proxy voting policies are attached hereto as Appendix E. Copies of the board’s proxy voting principles, as well as information regarding how the advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 are available at americancentury.com/proxy . The advisor’s proxy voting record also is available on the SEC’s website at sec.gov.

The Funds’ Principal Shareholders

A list of the funds’ principal shareholders appears in Appendix A.

Service Providers

The funds have no employees. To conduct the funds’ day-to-day activities, the trust has hired a number of service providers. Each service provider has a specific function to fill on behalf of the funds that is described below.

ACIM, ACS and ACIS are wholly owned, directly or indirectly, by ACC. The Stowers Institute for Medical Research (SIMR) controls ACC by virtue of its beneficial ownership of more than 25% of the voting securities of ACC. SIMR is part of a not-for-profit biomedical research organization dedicated to finding the keys to the causes, treatments and prevention of disease.

Investment Advisor

American Century Investment Management, Inc. (ACIM) serves as the investment advisor for each of the funds. A description of the responsibilities of the advisor (ACIM) appears in each prospectus under the heading Management.

Each class of each fund is subject to a contractual unified management fee based on a percentage of the daily net assets of such class. For more information about the unified management fee, see The Investment Advisor under the heading Management in each fund’s prospectus.

Emerging Markets Debt Fund

The unified management fee for each of the Investor Class, A Class, C Class and R Class is 0.96%. The unified management fee for the I Class is 0.86%. The unified management fee for the Y Class and R5 Class is 0.76%. The unified management fee for the R6 Class and G Class is 0.71%. The amount of the fee is calculated daily and paid monthly in arrears.

Global Bond Fund

The unified management fee for each of the Investor Class, A Class, C Class and R Class is 0.83%. The unified management fee for the I Class is 0.73%. The unified management fee for the Y Class and R5 Class is 0.63%. The unified management fee for the R6 Class and G Class is 0.58%. The amount of the fee is calculated daily and paid monthly in arrears.

International Bond Fund

The annual rate at which the unified management fee is assessed is determined daily in a multi-step process. First, the fund is categorized according to the broad asset class in which it invests (e.g., money market, bond or equity), and the assets of all the funds in each category are totaled across the American Century Investments family of funds (“Fund Category Assets”). Second, the assets are totaled for certain other accounts managed by the advisor (“Other Account Category Assets”). To be included, these accounts must have the same management team and investment objective as a fund in the same category with the same Board of Trustees as the trust. Together, the Fund Category Assets and the Other Account Category Assets comprise the “Investment Category Assets.” The Investment Category Fee Rate is then calculated by applying the fund’s Investment Category Fee Schedule to the Investment Category Assets and dividing the result by the Investment Category Assets.

Finally, a separate Complex Fee Schedule is applied to the assets of all of the funds in the American Century Investments family of funds (the “Complex Assets”), and the Complex Fee Rate is calculated based on the resulting total. The Investment Category Fee Rate and the Complex Fee Rate are then added to determine the Management Fee Rate payable by a class of the fund to the advisor.

For purposes of determining the assets that comprise the Fund Category Assets, Other Account Category Assets and Complex Assets, the assets of registered investment companies managed by the advisor that invest primarily in the shares of other registered investment companies shall not be included.

The schedules by which the unified management fee for International Bond is determined are shown below.



Investment Category Fee Schedule for International Bond
Category Assets	Fee Rate
First $1 billion	0.6100%
Next $1 billion	0.5580%
Next $3 billion	0.5280%
Next $5 billion	0.5080%
Next $15 billion	0.4950%
Next $25 billion	0.4930%
Thereafter	0.4925%

The Complex Fee is determined according to the schedule below.



Complex Assets	Investor, A, C and R Class Fee Rate	I Class Fee Rate	Y and R5 Class Fee Rate	R6 and G Class Fee Rate
First $2.5 billion	0.3100%	0.2100%	0.1100%	0.0600%
Next $7.5 billion	0.3000%	0.2000%	0.1000%	0.0500%
Next $15 billion	0.2985%	0.1985%	0.0985%	0.0485%
Next $25 billion	0.2970%	0.1970%	0.0970%	0.0470%
Next $25 billion	0.2870%	0.1870%	0.0870%	0.0370%
Next $25 billion	0.2800%	0.1800%	0.0800%	0.0300%
Next $25 billion	0.2700%	0.1700%	0.0700%	0.0200%
Next $25 billion	0.2650%	0.1650%	0.0650%	0.0150%
Next $25 billion	0.2600%	0.1600%	0.0600%	0.0100%
Next $25 billion	0.2550%	0.1550%	0.0550%	0.0050%
Thereafter	0.2500%	0.1500%	0.0500%	0.0000%

All Funds in American Century International Bond Funds

On each calendar day, each class of each fund accrues a management fee that is equal to the class’s Management Fee Rate times the net assets of the class divided by 365 (366 in leap years). On the first business day of each month, the funds pay a management fee to the advisor for the previous month. The fee for the previous month is the sum of the calculated daily fees for each class of a fund during the previous month.

The management agreement between the trust and the advisor shall continue in effect for a period of two years from its effective date (unless sooner terminated in accordance with its terms) and shall continue in effect from year to year thereafter for each fund so long as such continuance is approved at least annually by:


(1)	either the funds’ Board of Trustees, or a majority of the outstanding voting securities of such fund (as defined in the Investment Company Act); and


(2)	the vote of a majority of the trustees of the funds who are not parties to the agreement, or interested persons of the advisor, cast in person at a meeting called for the purpose of voting on such approval.

The management agreement states that the funds’ Board of Trustees or a majority of the outstanding voting securities of each class of such fund may terminate the management agreement at any time without payment of any penalty on 60 days’ written notice to the advisor. The management agreement shall be automatically terminated if it is assigned.

The management agreement states that the advisor shall not be liable to the funds or its shareholders for anything other than willful misfeasance, bad faith, gross negligence or reckless disregard of its obligations and duties.

The management agreement also provides that the advisor and its officers, trustees or directors and employees may engage in other business, render services to others, and devote time and attention to any other business whether of a similar or dissimilar nature.

Certain investments may be appropriate for the funds and also for other clients advised by the advisor. Investment decisions for the funds and other clients are made with a view to achieving their respective investment objectives after consideration of such factors as their current holdings, availability of cash for investment and the size of their investment generally. A particular security may be bought or sold for only one client or fund, or in different amounts and at different times for more than one but less than all clients or funds. A particular security may be bought for one client or fund on the same day it is sold for another client or fund, and a client or fund may hold a short position in a particular security at the same time another client or fund holds a long position. In addition, purchases or sales of the same security may be made for two or more clients or funds on the same date. The advisor has adopted procedures designed to ensure such transactions will be allocated among clients and funds in a manner believed by the advisor to be equitable to each. In some cases this procedure could have an adverse effect on the price or amount of the securities purchased or sold by the fund.

The advisor may aggregate purchase and sale orders of the funds with purchase and sale orders of its other clients when the advisor believes that such aggregation provides the best execution for the funds. The Board of Trustees has approved the policy of the advisor with respect to the aggregation of portfolio transactions. Fixed-income securities transactions are not executed through a centralized trading desk. Instead, portfolio teams are responsible for executing trades with broker-dealers in a predominantly dealer marketplace. Trade allocation decisions are made by the portfolio managers at the time of trade execution and orders entered on the fixed-income order management system. The advisor will not aggregate portfolio transactions of the funds unless it believes such aggregation is consistent with its duty to seek best execution on behalf of the funds and the terms of the management agreement. The advisor receives no additional compensation or remuneration as a result of such aggregation.

Unified management fees incurred by the funds for the fiscal years ended October 31, 2019 , October 31, 2018 and October 31, 2017, are indicated in the following table.



Unified Management Fees
Fund	2019	2018	2017
Emerging Markets Debt	$1,014,411¹	$970,897²	$292,680
Global Bond	$2,777,285³	$2,851,422⁴	$7,033,879⁵
International Bond	$3,517,346⁶	$3,761,418⁷	$5,646,848⁸


¹	Amount shown reflects waiver by advisor of $1,913,417 in management fees.


²	Amount shown reflects waiver by advisor of $2,156,198 in management fees.


³	Amount shown reflects waiver by advisor of $5,794,350 in management fees.


⁴	Amount shown reflects waiver by advisor of $8,231,741 in management fees.


⁵	Amount shown reflects waiver by advisor of $3,006,296 in management fees.


⁶	Amount shown reflects waiver by advisor of $1,013,787 in management fees.


⁷	Amount shown reflects waiver by advisor of $1,268,405 in management fees.


⁸	Amount shown reflects waiver by advisor of $629,143 in management fees.

Portfolio Managers

Accounts Managed

The portfolio managers are responsible for the day-to-day management of various accounts, as indicated by the following table. None of these accounts has an advisory fee based on the performance of the account.



Accounts Managed As of October 31, 2019
		Registered Investment Companies (e.g., other American Century Investments funds and American Century Investments- subadvised funds)	Other Pooled Investment Vehicles (e.g., commingled trusts and 529 education savings plans)	Other Accounts (e.g., separate accounts and corporate accounts, including incubation strategies and corporate money)
Abdelak Adjriou	Number of Accounts	4	3	5
	Assets	$2.2 billion¹	$646.5 million	$1.1 billion
Alessandra Alecci	Number of Accounts	1	2	0
	Assets	$384.6 million²	$201.7 million	N/A
Simon Chester	Number of Accounts	4	2	5
	Assets	$2.2 billion¹	$593.2 million	$1.1 billion
Robert V. Gahagan	Number of Accounts	20	4	2
	Assets	$18.9 billion³	$2.2 billion	$514.9 million
Brian Howell	Number of Accounts	21	6	7
	Assets	$18.9 billion⁴	$2.5 billion	$1.7 billion
John A. Lovito	Number of Accounts	6	4	5
	Assets	$2.6 billion⁵	$788.7 million	$1.1 billion
Thomas Youn	Number of Accounts	1	1	0
	Assets	$381.3 million⁶	$142.2 million	N/A


¹	Includes $1.3 billion in Global Bond Fund; and $644.6 million in International Bond Fund.


²	Includes $384.6 million in Emerging Markets Debt Fund; information is provided as of December 4, 2019.


³	Includes $1.3 billion in Global Bond Fund.


⁴	Includes $381.3 million in Emerging Markets Debt Fund; and $644.6 million in International Bond Fund.


⁵	Includes $381.3 million in Emerging Markets Debt Fund; $1.3 billion in Global Bond; and $644.6 million in International Bond Fund.


⁶	Includes $381.3 million in Emerging Markets Debt Fund.

Potential Conflicts of Interest

Certain conflicts of interest may arise in connection with the management of multiple portfolios. Potential conflicts include, for example, conflicts among investment strategies, such as one portfolio buying or selling a security while another portfolio has a differing, potentially opposite position in such security. This may include one portfolio taking a short position in the security of an issuer that is held long in another portfolio (or vice versa). Other potential conflicts may arise with respect to the allocation of investment opportunities, which are discussed in more detail below. American Century Investments has adopted policies and procedures that are designed to minimize the effects of these conflicts.

Responsibility for managing American Century Investments client portfolios is organized according to investment discipline. Investment disciplines include, for example, disciplined equity, global growth equity, global value equity, global fixed-income, multi-asset strategies, exchange traded funds, and Avantis Investors funds . Within each discipline are one or more portfolio teams responsible for managing specific client portfolios. Generally, client portfolios with similar strategies are managed by the same team using the same objective, approach, and philosophy. Accordingly, portfolio holdings, position sizes, and industry and sector exposures tend to be similar across similar portfolios, which minimizes the potential for conflicts of interest. In addition, American Century Investments maintains an ethical wall that restricts real time access to information regarding any portfolio’s transaction activities and positions to team members that have responsibility for a given portfolio or are within the same equity investment discipline. The ethical wall is intended to aid in preventing the misuse of portfolio holdings information and trading activity in other disciplines.

For each investment strategy, one portfolio is generally designated as the “policy portfolio.” Other portfolios with similar investment objectives, guidelines and restrictions, if any, are referred to as “tracking portfolios.” When managing policy and tracking portfolios, a portfolio team typically purchases and sells securities across all portfolios that the team manages. American Century Investments’

trading systems include various order entry programs that assist in the management of multiple portfolios, such as the ability to purchase or sell the same relative amount of one security across several funds. In some cases a tracking portfolio may have additional restrictions or limitations that cause it to be managed separately from the policy portfolio. Portfolio managers make purchase and sale decisions for such portfolios alongside the policy portfolio to the extent the overlap is appropriate, and separately, if the overlap is not.

American Century Investments may aggregate orders to purchase or sell the same security for multiple portfolios when it believes such aggregation is consistent with its duty to seek best execution on behalf of its clients. Orders of certain client portfolios may, by investment restriction or otherwise, be determined not available for aggregation. American Century Investments has adopted policies and procedures to minimize the risk that a client portfolio could be systematically advantaged or disadvantaged in connection with the aggregation of orders. To the extent equity trades are aggregated, shares purchased or sold are generally allocated to the participating portfolios pro rata based on order size. Because initial public offerings (IPOs) are usually available in limited supply and in amounts too small to permit across-the-board pro rata allocations, American Century Investments has adopted special procedures designed to promote a fair and equitable allocation of IPO securities among clients over time. Fixed-income securities transactions are not executed through a centralized trading desk. Instead, portfolio teams are responsible for executing trades with broker/dealers in a predominantly dealer marketplace. Trade allocation decisions are made by the portfolio manager at the time of trade execution and orders entered on the fixed-income order management system.

Finally, investment of American Century Investments’ corporate assets in proprietary accounts may raise additional conflicts of interest. To mitigate these potential conflicts of interest, American Century Investments has adopted policies and procedures intended to provide that trading in proprietary accounts is performed in a manner that does not give improper advantage to American Century Investments to the detriment of client portfolios.

Compensation

American Century Investments portfolio manager compensation is structured to align the interests of portfolio managers with those of the shareholders whose assets they manage. As of October 31, 2019 , it included the components described below, each of which is determined with reference to a number of factors such as overall performance, market competition, and internal equity.

Base Salary

Portfolio managers receive base pay in the form of a fixed annual salary.

Bonus

A significant portion of portfolio manager compensation takes the form of an annual incentive bonus tied to performance of mutual funds a portfolio manager manages. Bonus payments are determined by a combination of factors. One factor is mutual fund investment performance. Fund investment performance is generally measured by a combination of one-, three- and five-year pre-tax performance relative to various benchmarks and/or internally-customized peer groups, such as those indicated below. The performance comparison periods may be adjusted based on a fund’s inception date or a portfolio manager’s tenure on the fund.



Fund	Benchmarks	Peer Group¹
Emerging Markets Debt	JPMorgan Corporate Emerging Market Bond (CEMBI) Broad Diversified Index	Morningstar Global Emerging Markets Corporate Bond Morningstar US Emerging Markets Bond Morningstar Global Emerging Markets Corporate Bond - EUR Biased
Global Bond	Bloomberg Barclays Global Aggregate Bond Index (USD, hedged)	N/A
International Bond	Bloomberg Barclays Global Aggregate Bond ex-USD (Unhedged)²	Lipper International Income


¹	Custom peer groups are constructed using all the funds in the indicated categories as a starting point. Funds are then eliminated from the peer group based on a standardized methodology designed to result in a final peer group that is both more stable (i.e., has less peer turnover) over the long term and that more closely represents the fund’s true peers based on internal investment mandates.


²	Prior to January 1, 2015, this benchmark was the Barclays Global Treasury ex-US Bond Index; 25% weight in Japan and 5% maximum weights in Austria, Ireland, Finland and Portugal; minimum AA quality; FX-adjusted (investable index).

Portfolio managers may have responsibility for multiple American Century Investments mutual funds. In such cases, the performance of each is assigned a percentage weight appropriate for the portfolio manager’s relative levels of responsibility. Portfolio managers also may have responsibility for other types of similarly managed portfolios. If the performance of a similarly managed account is considered for purposes of compensation, it is measured in the same way as a comparable American Century Investments mutual fund (i.e., relative to the performance of a benchmark and/or peer group).

A second factor in the bonus calculation relates to the performance of a number of American Century Investments funds managed according to one of the following investment disciplines: global growth equity, global value equity, disciplined equity, global fixed income and multi-asset strategies. Performance is measured for each product individually as described above and then combined to

create an overall composite for the product group. These composites may measure one-year performance (equal weighted) or a combination of one-, three- and five-year performance (equal or asset weighted) depending on the portfolio manager’s responsibilities and products managed and the composite for certain portfolio managers may include multiple disciplines. This feature is designed to encourage effective teamwork among portfolio management teams in achieving long-term investment success for similarly styled portfolios. The American Century ETFs are not included in a product group composite.

A portion of portfolio managers’ bonuses may also be tied to management of ETFs, profitability, or individual performance goals, such as research projects and the development of new products.

Restricted Stock Plan

Portfolio managers are eligible for grants of restricted stock of ACC. These grants are discretionary, and eligibility and availability can vary from year to year. The size of an individual’s grant is determined by individual and product performance as well as other product-specific considerations such as profitability. Grants can appreciate/depreciate in value based on the performance of the ACC stock during the restriction period (generally three to four years).

Deferred Compensation Plans

Portfolio managers are eligible for grants of deferred compensation. These grants are used in very limited situations, primarily for retention purposes. Grants are fixed and can appreciate/depreciate in value based on the performance of the American Century Investments mutual funds in which the portfolio manager chooses to invest them.

Ownership of Securities

The following table indicates the dollar range of securities of the fund beneficially owned by each fund’s portfolio managers as of October 31, 2019 .



Ownership of Securities
	Aggregate Dollar Range of Securities in Fund
Emerging Markets Debt Fund
Alessandra Alecci¹	A
Brian Howell	A
John A. Lovito	A
Thomas Youn	A
Global Bond Fund
Abdelak Adjriou	A
Simon Chester	A
Robert V. Gahagan	A
John A. Lovito	A
International Bond Fund
Abdelak Adjriou	A
Simon Chester	A
Brian Howell	A
John A. Lovito	A

Ranges: A – none; B – $1-$10,000; C – $10,001-$50,000; D – $50,001-$100,000; E – $100,001-$500,000; F – $500,001-$1,000,000; G – More than $1,000,000.


¹	Information is provided as of December 4, 2019.

Transfer Agent and Administrator

American Century Services, LLC (ACS), 4500 Main Street, Kansas City, Missouri 64111, serves as transfer agent and dividend-paying agent for the funds. It provides physical facilities, computer hardware and software and personnel, for the day-to-day administration of the funds and the advisor. The advisor pays ACS’s costs for serving as transfer agent and dividend-payment agent for the funds out of the advisor’s unified management fee. For a description of this fee and the terms of its payment, see the above discussion under the caption Investment Advisor on page 40.

Proceeds from purchases of fund shares may pass through accounts maintained by the transfer agent at Commerce Bank, N.A. or UMB Bank, n.a. before being held at the fund’s custodian. Redemption proceeds also may pass from the custodian to the shareholder through such bank accounts.

From time to time, special services may be offered to shareholders who maintain higher share balances in our family of funds. These services may include the waiver of minimum investment requirements, expedited confirmation of shareholder transactions, newsletters and a team of personal representatives. Any expenses associated with these special services will be paid by the advisor.

Sub-Administrator

The advisor has entered into an Administration Agreement with State Street Bank and Trust Company (SSB) to provide certain fund accounting, fund financial reporting, tax and treasury/tax compliance services for the funds, including striking the daily net asset value for the funds. The advisor pays SSB a monthly fee as compensation for these services that is based on the total net assets of accounts in the American Century complex serviced by SSB. ACS does pay SSB for some additional services on a per fund basis. While ACS continues to serve as the administrator of the funds, SSB provides sub-administrative services that were previously undertaken by ACS.

Distributor

The funds’ shares are distributed by American Century Investment Services, Inc. (ACIS), a registered broker-dealer. The distributor is a wholly owned subsidiary of ACC, and its principal business address is 4500 Main Street, Kansas City, Missouri 64111.

The distributor is the principal underwriter of the funds’ shares. The distributor makes a continuous, best-efforts underwriting of the funds’ shares. This means the distributor has no liability for unsold shares. The advisor pays ACIS’s costs for serving as principal underwriter of the funds’ shares out of the advisor’s unified management fee. For a description of this fee and the terms of its payment, see the above discussion under the caption Investment Advisor on page 40. ACIS does not earn commissions for distributing the funds’ shares.

Certain financial intermediaries unaffiliated with the distributor or the funds may perform various administrative and shareholder services for their clients who are invested in the funds. These services may include assisting with fund purchases, redemptions and exchanges, distributing information about the funds and their performance, preparing and distributing client account statements, and other administrative and shareholder services that would otherwise be provided by the distributor or its affiliates. The distributor may pay fees out of its own resources to such financial intermediaries for providing these services.

Custodian Bank

State Street Bank and Trust Company (SSB), State Street Financial Center, One Lincoln Street, Boston, Massachusetts 02111 serves as custodian of the funds’ cash and securities. Foreign securities, if any, are held by foreign banks participating in a network coordinated by SSB. The custodian takes no part in determining the investment policies of the funds or in deciding which securities are purchased or sold by the funds. The funds, however, may invest in certain obligations of the custodian and may purchase or sell certain securities from or to the custodian.

Securities Lending Agent

State Street Bank and Trust Company (SSB) serves as securities lending agent for the funds pursuant to a Securities Lending Administration Agreement. The following table provides the amounts of income and fees/compensation related to the funds’ securities lending activities during the most recent fiscal year:



	Emerging Markets Debt Fund
Gross income from securities lending activities	$173,508
Fees and/or compensation paid by the fund for securities lending activities and related services:
Fees paid to securities lending agent from a revenue split	$4,698
Fees paid for any cash collateral management service (including fees deducted from a pooled cash collateral reinvestment vehicle) that are not included in the revenue split	$2,946
Administrative fees not included in the revenue split	$0
Indemnification fee not included in the revenue split	$0
Rebate (paid to borrower)	$123,432
Other fees not included in revenue split	$0
Aggregate fees/compensation for securities lending activities	$131,077
Net income from securities lending activities	$42,431

As the funds’ securities lending agent, SSB provides the following services: locating borrowers for fund securities, executing loans of portfolio securities pursuant to terms and parameters defined by the advisor and the Board of Directors, monitoring the daily value of

the loaned securities and collateral, requiring additional collateral as necessary, managing cash collateral, and providing certain limited recordkeeping and accounting services.

Independent Registered Public Accounting Firm

PricewaterhouseCoopers LLP is the independent registered public accounting firm of the funds. The address of PricewaterhouseCoopers LLP is 1100 Walnut, Suite 1300, Kansas City, Missouri 64106. As the independent registered public accounting firm of the funds, PricewaterhouseCoopers LLP provides services including auditing the annual financial statements and financial highlights for each fund.

Brokerage Allocation

The advisor places orders for equity portfolio transactions with broker-dealers, who receive commissions for their services. Generally, commissions relating to securities traded on foreign exchanges will be higher than commissions relating to securities traded on U.S. exchanges. The advisor purchases and sells fixed-income securities through principal transactions, meaning the advisor normally purchases securities on a net basis directly from the issuer or a primary market-maker acting as principal for the securities. The funds generally do not pay a stated brokerage commission on these transactions, although the purchase price for debt securities usually includes an undisclosed compensation. Purchases of securities from underwriters typically include a commission or concession paid by the issuer to the underwriter, and purchases from dealers serving as market-makers typically include a dealer’s mark-up (i.e., a spread between the bid and asked prices).

Under the management agreement between the funds and the advisor, the advisor has the responsibility of selecting brokers and dealers to execute portfolio transactions. The funds’ policy is to secure the most favorable prices and execution of orders on its portfolio transactions. The advisor selects broker-dealers on their perceived ability to obtain “best execution” in effecting transactions in its clients’ portfolios. In selecting broker-dealers to effect portfolio transactions relating to equity securities, the advisor considers the full range and quality of a broker-dealer’s research and brokerage services, including, but not limited to, the following:


•	applicable commission rates and other transaction costs charged by the broker-dealer


•	value of research provided to the advisor by the broker-dealer (including economic forecasts, fundamental and technical advice on individual securities, market analysis, and advice, either directly or through publications or writings, as to the value of securities, availability of securities or of purchasers/sellers of securities)


•	timeliness of the broker-dealer’s trade executions


•	efficiency and accuracy of the broker-dealer’s clearance and settlement processes


•	broker-dealer’s ability to provide data on securities executions


•	financial condition of the broker-dealer


•	the quality of the overall brokerage and customer service provided by the broker-dealer

In transactions to buy and sell fixed-income securities, the selection of the broker-dealer is determined by the availability of the desired security and its offering price, as well as the broker-dealer’s general execution and operational and financial capabilities in the type of transaction involved. The advisor will seek to obtain prompt execution of orders at the most favorable prices or yields. The advisor does not consider the receipt of products or services other than brokerage or research services in selecting broker-dealers.

On an ongoing basis, the advisor seeks to determine what levels of commission rates are reasonable in the marketplace. In evaluating the reasonableness of commission rates, the advisor considers:


•	rates quoted by broker-dealers


•	the size of a particular transaction, in terms of the number of shares, dollar amount, and number of clients involved


•	the ability of a broker-dealer to execute large trades while minimizing market impact the complexity of a particular transaction


•	the nature and character of the markets on which a particular trade takes place


•	the level and type of business done with a particular firm over a period of time


•	the ability of a broker-dealer to provide anonymity while executing trades


•	historical commission rates


•	rates that other institutional investors are paying, based on publicly available information

The brokerage commissions paid by the funds may exceed those that another broker-dealer might have charged for effecting the same transactions, because of the value of the brokerage and research services provided by the broker-dealer. Research services furnished by broker-dealers through whom the funds effect securities transactions may be used by the advisor in servicing all of its accounts, and not all such services may be used by the advisor in managing the portfolios of the funds.

Pursuant to its internal allocation procedures, the advisor regularly evaluates the brokerage and research services provided by each broker-dealer that it uses. On a periodic basis, members of the advisor’s portfolio management team assess the quality and value of research and brokerage services provided by each broker-dealer that provides execution services and research to the advisor for its

clients’ accounts. The results of the periodic assessments are used to add or remove brokers from the approved brokers list, if needed, and to set research budgets for the following period. Execution-only brokers are used where deemed appropriate.

In the fiscal years ended October 31, 2019 , October 31, 2018 and October 31, 2017, the brokerage commissions including, as applicable, futures commissions, of each fund are listed in the following table.



Fund	2019	2018	2017
Emerging Markets Debt	$15,779	$14,110	$1,586
Global Bond	$61,803	$56,796	$47,626
International Bond	$29,965	$26,907	$30,286

Brokerage commissions paid by a fund may vary significantly from year to year as a result of changing asset levels throughout the year, portfolio turnover, varying market conditions, and other factors.

Regular Broker-Dealers

As of the end of its most recently completed fiscal year, Emerging Markets Debt Fund owned no securities of its regular brokers or dealers (as defined by Rule 10b-1 under the Investment Company Act of 1940) or of their parent companies. Global Bond Fund and International Bond Fund owned securities of their regular brokers or dealers (as defined by Rule 10b-1 under the Investment Company Act of 1940) or of their parent companies, as listed below.



Fund	Broker, Dealer or Parent	Value of Securities Owned as of October 31, 2019
Global Bond	Bank of America Corp	$8,411,511
	Citigroup Inc	$8,257,885
	Goldman Sachs Group Inc/The	$7,605,163
	Morgan Stanley	$5,635,088
	JPMorgan Chase & Co	$5,016,232
	Barclays PLC	$4,333,772
	BNP Paribas	$3,283,940
	UBS Group AG	$1,249,307
International Bond	Barclays PLC	$2,612,096
	Goldman Sachs Group Inc/The	$2,366,383
	BNP Paribas	$1,498,227
	Bank of America Corp	$944,825

Information About Fund Shares

The Declaration of Trust permits the Board of Trustees to issue an unlimited number of full and fractional shares of beneficial interest without par value, which may be issued in series (or funds). Each of the funds named on the front of this statement of additional information is a series of shares issued by the trust. In addition, each series (or fund) may be divided into separate classes. See Multiple Class Structure which follows. Additional funds and classes may be added without a shareholder vote.

Each fund votes separately on matters affecting that fund exclusively. Voting rights are not cumulative, so that investors holding more than 50% of the trust’s (all funds’) outstanding shares may be able to elect a Board of Trustees. The trust undertakes dollar-based voting, meaning that the number of votes a shareholder is entitled to is based upon the dollar amount of the shareholder’s investment. The election of trustees is determined by the votes received from all the trust’s shareholders without regard to whether a majority of shares of any one fund voted in favor of a particular nominee or all nominees as a group.

Each shareholder has rights to dividends and distributions declared by the fund he or she owns and to the net assets of such fund upon its liquidation or dissolution proportionate to his or her share ownership interest in the fund. Shares of each fund have equal voting rights, although each fund votes separately on matters affecting that fund exclusively.

The trust shall continue unless terminated by (1) approval of at least two-thirds of the shares of each fund entitled to vote or (2) the trustees by written notice to shareholders of each fund. Any fund may be terminated by (1) approval of at least two-thirds of the shares of that fund or (2) the trustees by written notice to shareholders of that fund.

Upon termination of the trust or a fund, as the case may be, the trust shall pay or otherwise provide for all charges, taxes, expenses and liabilities belonging to the trust or the fund. Thereafter, the trust shall reduce the remaining assets belonging to each fund (or the particular fund) to cash, shares of other securities or any combination thereof, and distribute the proceeds belonging to each fund (or

the particular fund) to the shareholders of that fund ratably according to the number of shares of that fund held by each shareholder on the termination date.

Shareholders of a Massachusetts business trust could, under certain circumstances, be held personally liable for its obligations. However, the Declaration of Trust contains an express disclaimer of shareholder liability for acts or obligations of the trust. The Declaration of Trust also provides for indemnification and reimbursement of expenses of any shareholder held personally liable for obligations of the trust. The Declaration of Trust provides that the trust will, upon request, assume the defense of any claim made against any shareholder for any act or obligation of the trust and satisfy any judgment thereon. The Declaration of Trust further provides that the trust may maintain appropriate insurance (for example, fidelity, bonding and errors and omissions insurance) for the protection of the trust, its shareholders, trustees, officers, employees and agents to cover possible tort and other liabilities. Thus, the risk of a shareholder incurring financial loss as a result of shareholder liability is limited to circumstances in which both inadequate insurance exists and the trust is unable to meet its obligations.

The assets belonging to each series or class of shares are held separately by the custodian and the shares of each series or class represent a beneficial interest in the principal, earnings and profit (or losses) of investments and other assets held for each fund or class. Your rights as a shareholder are the same for all series of securities unless otherwise stated. Within their respective series or class, all shares have equal redemption rights. Each share, when issued, is fully paid and non-assessable.

Multiple Class Structure

The Board of Trustees has adopted a multiple class plan pursuant to Rule 18f-3 adopted by the SEC. The plan is described in the prospectus of any fund that offers more than one class. Pursuant to such plan, the funds may issue the following classes of shares: Investor Class, I Class, Y Class, A Class, C Class, R Class, R5 Class, R6 Class and G Class. Not all funds offer all classes.

The Investor Class is made available to investors directly from American Century Investments and/or through some financial intermediaries. Additional information regarding eligibility for Investor Class shares may be found in the funds’ prospectuses. The I Class is made available to institutional shareholders or through financial intermediaries that provide various shareholder and administrative services. Y Class shares are available through financial intermediaries that offer fee-based advisory programs. The A and C Classes also are made available through financial intermediaries, for purchase by individual investors who receive advisory and personal services from the intermediary. The R Class is made available through financial intermediaries and is generally used in 401(k) and other retirement plans. R5 and R6 Classes are generally available only to participants in employer-sponsored retirement plans where a financial intermediary provides recordkeeping services to plan participants. G Class shares are available for purchase only by funds advised by American Century Investments and other American Century advisory clients that are subject to a contractual fee for investment management services. The classes have different unified management fees as a result of their separate arrangements for shareholder services. In addition, the A, C and R Class shares each are subject to a separate Master Distribution and Individual Shareholder Services Plan (the A Class Plan, C Class Plan and R Class Plan, respectively and collectively, the plans) described below. The plans have been adopted by the fund’s Board of Trustees in accordance with Rule 12b-1 adopted by the SEC under the Investment Company Act.

Rule 12b-1

Rule 12b-1 permits an investment company to pay expenses associated with the distribution of its shares in accordance with a plan adopted by its Board of Trustees and approved by its shareholders. Pursuant to such rule, the Board of Trustees of the funds’ A, C and R Classes have approved and entered into the A Class Plan, C Class Plan and R Class Plan, respectively. The plans are described below.

In adopting the plans, the Board of Trustees (including a majority of trustees who are not interested persons of the funds, as defined in the Investment Company Act, hereafter referred to as the independent trustees) determined that there was a reasonable likelihood that the plans would benefit the funds and the shareholders of the affected class. Some of the anticipated benefits include improved name recognition of the funds generally; and growing assets in existing funds, which helps retain and attract investment management talent, provides a better environment for improving fund performance, and can lower the total expense ratio for funds with stepped-fee schedules. Pursuant to Rule 12b-1, information about revenues and expenses under the plans is presented to the Board of Trustees quarterly. Continuance of the plans must be approved by the Board of Trustees, including a majority of the independent trustees, annually. The plans may be amended by a vote of the Board of Trustees, including a majority of the independent trustees, except that the plans may not be amended to materially increase the amount to be spent for distribution without majority approval of the shareholders of the affected class. The plans terminate automatically in the event of an assignment and may be terminated upon a vote of a majority of the independent trustees or by vote of a majority of the outstanding voting securities of the affected class.

All fees paid under the plans will be made in accordance with Section 2830 of the Conduct Rules of the Financial Industry Regulatory Authority (FINRA).

The Share Class Plans

As described in the prospectuses, the A, C and R Class shares of the funds are made available to persons purchasing through broker-dealers, banks, insurance companies and other financial intermediaries that provide various administrative, shareholder and distribution services. In addition, the A, C and R Classes are made available to participants in employer-sponsored retirement plans. The funds’ distributor enters into contracts with various banks, broker-dealers, insurance companies and other financial intermediaries, with respect to the sale of the funds’ shares and/or the use of the funds’ shares in various investment products or in connection with various financial services.

Certain recordkeeping and administrative services that would otherwise be performed by the funds’ transfer agent may be performed by a plan sponsor (or its agents) or by a financial intermediary for A, C and R Class investors. In addition to such services, the financial intermediaries provide various individual shareholder and distribution services.

To enable the funds’ shares to be made available through such plans and financial intermediaries, and to compensate them for such services, the funds’ Board of Trustees has adopted the A, C and R Class Plans. Pursuant to the plans, the following fees are paid and described further below.

A Class

The A Class pays the funds’ distributor 0.25% annually of the average daily net asset value of the A Class shares. The distributor may use these fees to pay for certain ongoing shareholder and administrative services and for distribution services, including past distribution services. This payment is fixed at 0.25% and is not based on expenses incurred by the distributor.

C Class

The C Class pays the funds’ distributor 1.00% annually of the average daily net asset value of the funds’ C Class shares, 0.25% of which is paid for certain ongoing individual shareholder and administrative services and 0.75% of which is paid for distribution services, including past distribution services. This payment is fixed at 1.00% and is not based on expenses incurred by the distributor.

R Class

The R Class pays the funds’ distributor 0.50% annually of the average daily net asset value of the R Class shares. The distributor may use these fees to pay for certain ongoing shareholder and administrative services and for distribution services, including past distribution services. This payment is fixed at 0.50% and is not based on expenses incurred by the distributor.

During the fiscal year ended October 31, 2019 , the aggregate amount of fees paid under each class plan is included in the table below.



	A Class	C Class	R Class
Emerging Markets Debt	$705	$362	$350
Global Bond	$4,418	$11,651	$628
International Bond	$22,944	$3,845	$330

The distributor then makes these payments to the financial intermediaries (including underwriters and broker-dealers, who may use some of the proceeds to compensate sales personnel) who offer the A, C and R Class shares for the services described below. No portion of these payments is used by the distributor to pay for advertising, printing costs or interest expenses.

Payments may be made for a variety of individual shareholder services, including, but not limited to:


(a)	providing individualized and customized investment advisory services, including the consideration of shareholder profiles and specific goals;


(b)	creating investment models and asset allocation models for use by shareholders in selecting appropriate funds;


(c)	conducting proprietary research about investment choices and the market in general;


(d)	periodic rebalancing of shareholder accounts to ensure compliance with the selected asset allocation;


(e)	consolidating shareholder accounts in one place;


(f)	paying service fees for providing personal, continuing services to investors, as contemplated by the Conduct Rules of FINRA; and


(g)	other individual services.

Individual shareholder services do not include those activities and expenses that are primarily intended to result in the sale of additional shares of the funds.

Distribution services include any activity undertaken or expense incurred that is primarily intended to result in the sale of A, C and/or R Class shares, which services may include but are not limited to:


(a)	paying sales commissions, on-going commissions and other payments to brokers, dealers, financial institutions or others who sell the A, C and R Class shares pursuant to selling agreements;


(b)	compensating registered representatives or other employees of the distributor who engage in or support distribution of the A, C and R Class shares;


(c)	compensating and paying expenses (including overhead and telephone expenses) of the distributor;


(d)	printing prospectuses, statements of additional information and reports for other-than-existing shareholders;


(e)	preparing, printing and distributing sales literature and advertising materials provided to the funds’ shareholders and prospective shareholders;


(f)	receiving and answering correspondence from prospective shareholders, including distributing prospectuses, statements of additional information, and shareholder reports;


(g)	providing facilities to answer questions from prospective shareholders about fund shares;


(h)	complying with federal and state securities laws pertaining to the sale of fund shares;


(i)	assisting shareholders in completing application forms and selecting dividend and other account options;


(j)	providing other reasonable assistance in connection with the distribution of fund shares;


(k)	organizing and conducting sales seminars and payments in the form of transactional and compensation or promotional incentives;


(l)	profit on the foregoing; and


(m)	such other distribution and services activities as the advisor determines may be paid for by the funds pursuant to the terms of the agreement between the corporation and the funds’ distributor and in accordance with Rule 12b-1 of the Investment Company Act.

Valuation of the Fund’s Securities

The net asset value (NAV) for each class of each fund is calculated by adding the value of all portfolio securities and other assets attributable to the class, deducting liabilities and dividing the result by the number of shares of the class outstanding. Expenses and interest earned on portfolio securities are accrued daily.

All classes of the funds except the A Class are offered at their NAV. The A Class of the funds is offered at its public offering price, which is the NAV plus the appropriate sales charge. This calculation may be expressed as a formula:

Offering Price = NAV/(1 – Sales Charge as a % of Offering Price)

For example, if the NAV of a fund’s A Class shares is $5.00, the public offering price would be $5.00/(1-4.50%) = $5.24.

Each fund’s NAV is calculated as of the close of business of the New York Stock Exchange (the NYSE), each day the NYSE is open for business. The NYSE usually closes at 4 p.m. Eastern time. The NYSE typically observes the following holidays: New Year’s Day, Martin Luther King Jr. Day, Presidents’ Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day. Although the fund expects the same holidays to be observed in the future, the NYSE may modify its holiday schedule at any time.

Trading in securities on European and Asian securities exchanges and over-the-counter markets is normally completed at various times before the close of business on each day that the NYSE is open. The funds may apply model-derived factors to the closing prices of equity securities traded on foreign securities exchanges. Factors are based on observable market data as provided by an independent pricing service. If an event were to occur after the value of a security was established, but before the NAV was determined, that was likely to materially change the NAV, then that security would be valued as determined in accordance with procedures adopted by the Board of Trustees.

Trading of these securities in foreign markets may not take place on every day that the NYSE is open. In addition, trading may take place in various foreign markets and on some electronic trading networks on Saturdays or on other days when the NYSE is not open and on which the funds’ NAVs are not calculated. Therefore, these calculations do not take place contemporaneously with the determination of the prices of many of the portfolio securities used in such calculation, and the value of the funds’ portfolios may be affected on days when shares of the funds may not be purchased or redeemed.

Debt securities are generally valued through valuations obtained from a commercial pricing service or at the most recent mean of the bid and asked prices provided by investment dealers in accordance with procedures established by the Board of Trustees.

The advisor typically completes its trading on behalf of the fund in various markets before the NYSE closes for the day. Foreign currency exchange rates also are determined prior to the close of the NYSE. If an event were to occur after the value of a security was established but before the NAV per share was determined that was likely to materially change the NAV, then that security would be valued as determined in accordance with procedures adopted by the Board of Trustees.

Securities maturing within 60 days of the valuation date may also be valued at cost, plus or minus an amortized discount or premium, unless it is determined that this would not result in fair valuation of a given security. Other assets and securities for which quotations are not readily available are valued in good faith using methods approved by the Board of Trustees.

Taxes

Federal Income Tax

Each fund intends to qualify annually as a regulated investment company (RIC) under Subchapter M of the Internal Revenue Code of 1986, as amended (the Code). RICs generally are not subject to federal and state income taxes. To qualify as a RIC a fund must, among other requirements, distribute substantially all of its net investment income and net realized capital gains (if any) to investors each year. If a fund were not eligible to be treated as a RIC, it would be liable for taxes at the fund level on all its income, significantly reducing its distributions to investors and eliminating investors’ ability to treat distributions received from the fund in the same manner in which they were realized by the fund. Under certain circumstances, the Code allows funds to cure deficiencies that would otherwise result in the loss of RIC status, including by paying a fund-level tax.

To qualify as a RIC, a fund must meet certain requirements of the Code, among which are requirements relating to sources of its income and diversification of its assets. A fund is also required to distribute 90% of its investment company taxable income each year. Additionally, a fund must declare dividends by December 31 of each year equal to at least 98% of ordinary income (as of December 31) and 98.2% of capital gains (as of October 31) to avoid the nondeductible 4% federal excise tax on any undistributed amounts.

Certain bonds purchased by a fund may be treated as bonds that were originally issued at a discount. Original issue discount represents interest for federal income tax purposes and can generally be defined as the difference between the price at which a security was issued and its stated redemption price at maturity. Although no cash is actually received by a fund until the maturity of the bond, original issue discount is treated for federal income tax purposes as income earned by a fund over the term of the bond, and therefore is subject to the distribution requirements of the Code. The annual amount of income earned on such a bond by a fund generally is determined on the basis of a constant yield to maturity that takes into account the semiannual compounding of accrued interest.

In addition, some of the bonds may be purchased by a fund at a discount that exceeds the original issue discount on such bonds, if any. This additional discount represents market discount for federal income tax purposes. The gain realized on the disposition of any bond having market discount generally will be treated as taxable ordinary income to the extent it does not exceed the accrued market discount on such bond (unless a fund elects to include market discount in income in tax years to which it is attributable or if the amount is considered de minimis). Generally, market discount accrues on a daily basis for each day the bond is held by a fund on a constant yield to maturity basis. In the case of any debt security having a fixed maturity date of not more than one year from date of issue, the gain realized on disposition generally will be treated as a short-term capital gain. In the case of any debt security having a fixed maturity date of not more than one year from date of issue, the gain realized on disposition generally will be treated as a short-term capital gain. If a fund holds the foregoing kinds of securities, it may be required to pay out as an income distribution each year an amount that is greater than the total amount of cash interest the fund actually received, which distributions may be made from the assets of the fund or, if necessary, by disposition of portfolio securities, including at a time when such disposition may not otherwise be advantageous.

A fund’s investments in foreign securities may be subject to withholding and other taxes imposed by foreign countries. However, tax conventions between certain countries and the United States may reduce or eliminate such taxes. Any foreign taxes paid by a fund will reduce its dividends distributions to investors.

A fund’s transactions in foreign currencies, forward contracts, options and futures contracts (including options and futures contracts on foreign currencies) will be subject to special provisions of the Code that, among other things, may affect the character of gains and losses realized by the fund (i.e., may affect whether gains or losses are ordinary or capital), accelerate recognition of income to the fund, defer fund losses, and affect the determination of whether capital gains and losses are characterized as long-term or short-term capital gains or losses. These rules could therefore affect the character, amount and timing of distributions to shareholders. These provisions also may require a fund to mark-to-market certain types of the positions in its portfolio (i.e., treat them as if they were sold), which may cause the fund to recognize income without receiving cash with which to make distributions in amounts necessary to satisfy the distribution requirements of the Code for relief from income and excise taxes. A fund will monitor its transactions and may make such tax elections as fund management deems appropriate with respect to these transactions.

Under the Code, gains or losses attributable to fluctuations in exchange rates that occur between the time a fund accrues income or other receivables or accrues expenses or other liabilities denominated in a foreign currency and the time a fund actually collects such receivables or pays such liabilities generally are treated as ordinary income or loss. Similarly, in disposing of debt securities denominated in foreign currencies, certain forward currency contracts, or other instruments, gains or losses attributable to fluctuations in the value of a foreign currency between the date the security, contract, or other instrument is acquired and the date it is disposed of are also usually treated as ordinary income or loss. Under Section 988 of the Code, these gains or losses may increase or decrease the amount of a fund’s investment company taxable income distributed to shareholders as ordinary income. This treatment could increase or decrease a fund’s ordinary income distributions, which may cause some or all of a fund’s previously distributed income to be classified as a return of capital.

As of October 31, 2019 , the funds had the following capital loss carryovers. When a fund has a capital loss carryover, it does not make capital gains distributions until the loss has been offset. The Regulated Investment Company Modernization Act of 2010 allows the funds to carry forward capital losses incurred in future taxable years for an unlimited period.



Fund	Unlimited
Emerging Markets Debt	$(12,372,984)
Global Bond	$(5,474,005)
International Bond	$(1,332,960)

If you have not complied with certain provisions of the Internal Revenue Code and Regulations, either American Century Investments or your financial intermediary is required by federal law to withhold and remit to the IRS the applicable federal withholding rate of reportable payments (which may include dividends, capital gains distributions and redemption proceeds). Those regulations require you to certify that the Social Security number or tax identification number you provide is correct and that you are not subject to withholding for previous under-reporting to the IRS. You will be asked to make the appropriate certification on your account application. Payments reported by us to the IRS that omit your Social Security number or tax identification number will subject us to a non-refundable penalty of $50, which will be charged against your account if you fail to provide the certification by the time the report is filed.

If fund shares are purchased through taxable accounts, distributions of either cash or additional shares of net investment income and net short-term capital gains are taxable to you as ordinary income, unless they are designated as qualified dividend income and you meet a minimum required holding period with respect to your shares of a fund, in which case such distributions are taxed at the long-term capital gains tax rate. Qualified dividend income is a dividend received by a fund from the stock of a domestic or qualifying foreign corporation, provided that the fund has held the stock for a required holding period and the stock was not on loan at the time of the dividend. The required holding period for qualified dividend income is met if the underlying shares are held more than 60 days in the 121-day period beginning 60 days prior to the ex-dividend date. Dividends received by a fund on shares of stock of domestic corporations may qualify for the 70% dividends-received deduction when distributed to corporate shareholders to the extent that a fund held those shares for more than 45 days. The funds do not expect a significant portion of their distributions to be qualified dividend income or to qualify for the corporate dividends-received deduction.

Distributions from gains on assets held by a fund longer than 12 months are taxable as long-term gains regardless of the length of time you have held your shares in the fund. If you purchase shares in a fund and sell them at a loss within six months, your loss on the sale of those shares will be treated as a long-term capital loss to the extent of any long-term capital gains dividends you received on those shares.

Each fund may use the “equalization method” of accounting to allocate a portion of their earnings and profits to redemption proceeds. Although using this method generally will not affect a fund’s total returns, it may reduce the amount that a fund would otherwise distribute to continuing shareholders by reducing the effect of redemptions of fund shares on fund distributions to shareholders.

A redemption of shares of a fund (including a redemption made in an exchange transaction) will be a taxable transaction for federal income tax purposes and you generally will recognize gain or loss in an amount equal to the difference between the basis of the shares and the amount received. If a loss is realized on the redemption of fund shares, the reinvestment in additional fund shares within 30 days before or after the redemption may be subject to the “wash sale” rules of the Code, resulting in a postponement of the recognition of such loss for federal income tax purposes.

A 3.8% Medicare contribution tax is imposed on net investment income, including interest, dividends and capital gains, provided you meet specified income levels.

State and Local Taxes

Distributions by the funds also may be subject to state and local taxes, even if all or a substantial part of such distributions are derived from interest on U.S. government obligations which, if you received such interest directly, would be exempt from state income tax. However, most but not all states allow this tax exemption to pass through to fund shareholders when a fund pays distributions to its shareholders. You should consult your tax advisor about the tax status of such distributions in your state.

The information above is only a summary of some of the tax considerations affecting the funds and their U.S. shareholders. No attempt has been made to discuss individual tax consequences. A prospective investor should consult with his or her tax advisors or state or local tax authorities to determine whether the funds are suitable investments.

Financial Statements

The funds’ financial statements for the fiscal year ended October 31, 2019 have been audited by PricewaterhouseCoopers LLP, independent registered public accounting firm. Their Report of Independent Registered Public Accounting Firm and the financial statements included in the funds’ annual reports for the fiscal year ended October 31, 2019 , are incorporated herein by reference.

Appendix A – Principal Shareholders

As of January 31, 2020 , the following shareholders owned more than 5% of the outstanding shares of a class of the fund. The table shows shares owned of record unless otherwise noted.



Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
Emerging Markets Debt
Investor Class
	American Century Services LLC, SSB&T Custodian One Choice Portfolio Moderate Omnibus Kansas City, MO Shares owned of record and beneficially	42%
	American Century Services LLC, SSB&T Custodian One Choice Portfolio Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	27%
	American Century Services LLC, SSB&T Custodian One Choice Portfolio Aggressive Omnibus Kansas City, MO Shares owned of record and beneficially	15%
	American Century Services LLC, SSB&T Custodian One Choice Portfolio Very Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	7%
I Class
	SEI Private Trust Co Oaks, PA	76%
	American Enterprise Investment Svc Minneapolis, MN	24%
Y Class
	Pershing LLC Jersey City, NJ	99.95%
A Class
	LPL Financial San Diego, CA	71%
	American Enterprise Investment Svc Minneapolis, MN	19%
	Pershing LLC Jersey City, NJ	8%
C Class
	American Enterprise Investment Svc Minneapolis, MN	64%
	LPL Financial San Diego, CA	22%
	American Century Investment Management, Inc Kansas City, MO Shares owned of record and beneficially	14%
R Class
	SSB&T Cust Learning Child Center LLC/Kiddie Manali Sane Sewickley, PA	17%
	SSB&T Cust Moxie Multisport LLC, Blake Uptain Phoenix, AZ	9%
	SSB&T Cust Aquatica Pool Management Inc, Jason Cherry San Antonio, TX	6%
	SSB&T Cust H & M Phillips Inc, Mitchell L Phillips Odessa, FL	5%

A-1



Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
Emerging Markets Debt
R5 Class
	American Century Investment Management, Inc Kansas City, MO Shares owned of record and beneficially	100%
R6 Class
	American Century Services LLC, SSB&T Custodian Multi-Asset Income Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	83%
	American Century Services LLC, SSB&T Custodian Strategic Income Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	15%
G Class
	American Century Services LLC, SSB&T Custodian One Choice 2035 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	19%
	American Century Services LLC, SSB&T Custodian One Choice 2030 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	16%
	American Century Services LLC, SSB&T Custodian One Choice 2025 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	16%
	American Century Services LLC, SSB&T Custodian One Choice 2040 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	13%
	American Century Services LLC, SSB&T Custodian One Choice 2045 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	11%
	American Century Services LLC, SSB&T Custodian One Choice 2050 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	7%
	American Century Services LLC, SSB&T Custodian One Choice 2020 Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	7%
	American Century Services LLC, SSB&T Custodian One Choice In Retirement Portfolio Emerging Markets Debt Omnibus Kansas City, MO Shares owned of record and beneficially	6%
Global Bond
Investor Class
	American Century Services LLC SSB&T Custodian One Choice Portfolio Moderate Omnibus Kansas City, MO Shares owned of record and beneficially	34%
	American Century Services LLC SSB&T Custodian One Choice Portfolio Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	32%

A-2



Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
Global Bond
Investor Class
	American CenturyServices LLC SSB&T Custodian One Choice Portfolio Very Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	13%
	American Century Services LLC SSB&T Custodian One Choice Portfolio Aggressive Omnibus Kansas City, MO Shares owned of record and beneficially	10%
I Class
	American Enterprise Investment Svc Minneapolis, MN	53%
	Spec Cdy A/C Excl Ben Cust UBSFSI Weehawken, NJ	12%
	Charles Schwab & Co Inc San Francisco, CA	11%
	Raymond James St. Petersburg, FL	8%
	MLPF&S Jacksonville, FL	6%
Y Class
	Pershing LLC Jersey City, NJ	99.98%
A Class
	American Enterprise Investment Svc Minneapolis, MN	27%
	Spec Cdy A/C Excl Ben Cust UBSFSI Weehawken, NJ	21%
	Pershing LLC Jersey City, NJ	10%
	National Financial Services LLC Jersey City, NJ	9%
	Oppenheimer & Co Inc FBO Richard F Audi Trust Dearborn, MI Shares owned of record and beneficially	6%
C Class
	American Enterprise Investment Svc Minneapolis, MN	37%
	Spec Cdy A/C Excl Ben Cust UBSFSI Weehawken, NJ	32%
	MLPF&S Jacksonville, FL	16%
	Raymond James St. Petersburg, FL	8%

A-3



Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
Global Bond
R Class
	SSB&T Cust Biomedomics Inc. Xue Feng Wang Chapel Hill, NC Shares owned of record and beneficially	11%
	Ascensus Trust Company FBO Lawrence Duffy DMD PA 401(K) PS Fargo, ND	10%
	SSB&T Cust PDM Technology North America Michael Daniel Fite Nashville, TN Shares owned of record and beneficially	10%
	SSB&T Cust Almond Tree Group Family Daycare Junior Bazzey Brooklyn, NY Shares owned of record and beneficially	6%
	SSB&T Cust Koma Ventures II LLC DBA OrangeTheo Mina Kim San Francisco, CA Shares owned of record and beneficially	6%
R5 Class
	Charles Schwab & Co Inc San Francisco, CA	97%
R6 Class
	National Financial Services LLC Jersey City, NJ	71%
	Vanguard Fiduciary Trust Company FBO 401K Clients Valley Forge, PA	14%
	Great-West Trust Company LLC TTEE Employee Benefits Clients 401K Greenwood Vlg, CO	10%
G Class
	American Century Services LLC SSB&T Custodian One Choice 2025 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	20%
	American Century Services LLC SSB&T Custodian One Choice 2030 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	15%
	American Century Services LLC SSB&T Custodian One Choice 2035 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	15%
	American Century Services LLC SSB&T Custodian One Choice 2020 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	12%
	American Century Services LLC SSB&T Custodian One Choice In Retirement Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	12%
	American Century Services LLC SSB&T Custodian One Choice 2040 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	9%
	American Century Services LLC SSB&T Custodian One Choice 2045 Portfolio Global Bond Omnibus Kansas City, MO Shares owned of record and beneficially	8%

A-4



Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
International Bond
Investor Class
	KS Postsecondary Education SP SSB&T Custodian Kansas City, MO Includes 5.93% registered for the benefit of Schwab-Moderately Conservative Intl Bond Advisor Omnibus and 5.81% registered for the benefit of Schwab-Moderate Intl Bond Advisor Omnibus	33%
	American Century Services LLC SSB&T Custodian One Choice Portfolio Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	20%
	American Century Services LLC SSB&T Custodian One Choice Portfolio Moderate Omnibus Kansas City, MO Shares owned of record and beneficially	11%
	American Century Services LLC SSB&T Custodian One Choice Portfolio Very Conservative Omnibus Kansas City, MO Shares owned of record and beneficially	9%
	Charles Schwab & Co Inc San Francisco, CA	5%
I Class
	KS Postsecondary Education SP SSB&T Custodian Kansas City, MO Includes 15.71% registered for the benefit of KPESP LQ Very Conservative Intl Bond Omnibus Account; 12.50% registered for the benefit of KPESP LQ 40% Equity Intl Bond Omnibus Account; 11.31% registered for the benefit of KPESP LQ Conservative Intl Bond Omnibus Account; 10.06% registered for the benefit of KPESP LQ Short Term Plus International Bond Omnibus Account; 8.68% registered for the benefit of KPESP Short-Term Portfolio Intl Bond Omnibus; 7.47% registered for the benefit of KPESP LQ Moderate Intl Bond Omnibus Account; and 5.06% registered for the benefit of KPESP LQ Aggressive Intl Bond Omnibus Account.	75%
	MSSB LLC New York, NY	19%
Y Class
	Pershing LLC Jersey City, NJ	99.96%
A Class
	UMB Bank NA FBO Fiduciary for Tax Deferred Accounts Topeka, KS	53%
	MSSB LLC New York, NY	13%
	Pershing LLC Jersey City, NJ	10%
International Bond
C Class
	Wells Fargo Clearing Services LLC Saint Louis, MO	29%
	MLPF&S Jacksonville, FL	21%
	MSSB LLC New York, NY	12%
	National Financial Services LLC Jersey City, NJ	10%

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Fund/ Class	Shareholder	Percentage of Outstanding Shares Owned of Record
International Bond
C Class
	SSB&T Cust for the IRA Rollover of Leah A Kelly Plantation, FL Shares owned of record and beneficially	10%
	Pershing LLC Jersey City, NJ	8%
R Class
	Charles Schwab & Co Inc San Francisco, CA	24%
	SSB&T Cust Justin Rosen FDS Inc Justin Rosen Tampa, FL	13%
	SSB&T Cust Almond Tree Group Family Daycare Junior Bazzey Brooklyn, NY	13%
	SSB&T Cust Cyberdom Services Corp Nagmani Puppala Woodbridge, VA	9%
	SSB&T Cust The Home Doctor Inc Randy Borel Overland Park, KS	9%
R5 Class
	Goulstorrs & Co Inc Boston, MA	92%
R6 Class
	Charles Schwab & Co Inc. San Francisco, CA	59%
	State Street Bank & Trust Co TTEE FBO Hallmark Voluntary EE Bene TR Quincy, MA	41%
G Class
	American Century Services LLC SSB&T Custodian One Choice 2025 Portfolio International Bond Omnibus Kansas City, MO Shares owned of record and beneficially	30%
	American Century Services LLC SSB&T Custodian One Choice 2030 Portfolio International Bond Omnibus Kansas City, MO Shares owned of record and beneficially	23%
	American Century Services LLC SSB&T Custodian One Choice 2020 Portfolio International Bond Omnibus Kansas City, MO Shares owned of record and beneficially	18%
	American Century Services LLC SSB&T Custodian One Choice In Retirement Portfolio International Bond Omnibus Kansas City, MO Shares owned of record and beneficially	17%
	American Century Services LLC SSB&T Custodian One Choice 2035 Portfolio International Bond Omnibus Kansas City, MO Shares owned of record and beneficially	11%

The fund is unaware of any other shareholders, beneficial or of record, who own more than 5% of any class of the fund’s outstanding shares or who own more than 25% of the voting securities of the trust. A shareholder owning beneficially more than 25% of the trust’s outstanding shares may be considered a controlling person. The vote of any such person could have a more significant effect on matters presented at a shareholders’ meeting than votes of other shareholders. As of January 31, 2020 , the officers and trustees of the funds, as a group, owned less than 1% of any class of the funds’ outstanding shares.

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Appendix B – Sales Charges and Payments to Dealers

Sales Charges

The sales charges applicable to the A and C Classes of the funds are described in the prospectuses for those classes in the section titled Investing Through a Financial Intermediary. Shares of the A Class are subject to an initial sales charge, which declines as the amount of the purchase increases. Additional information regarding reductions and, if applicable, waivers of the sales charges may be found in the funds’ prospectuses.

Shares of the A and C Classes are subject to a contingent deferred sales charge (CDSC) upon redemption of the shares in certain circumstances. The specific charges and when they apply are described in the relevant prospectuses. The CDSC may be waived for certain redemptions by some shareholders, as described in the prospectuses.

An investor may terminate his relationship with an intermediary at any time. If the investor does not establish a relationship with a new intermediary and transfer any accounts to that new intermediary, such accounts may be exchanged to the Investor Class of the fund, if such class is available. The investor will be the shareholder of record of such accounts. In this situation, any applicable CDSCs will be charged when the exchange is made.

During the last full fiscal year ended October 31, 2019 , the funds had no CDSCs paid to the distributor from the A and C Class shares.

Payments to Dealers

The funds’ distributor expects to pay dealer commissions to the financial intermediaries who sell A and/or C Class shares of the funds at the time of such sales. Payments for A Class shares will be as follows



Purchase Amount	Dealer Commission as a % of Offering Price
< $99,999	4.00%
$100,000 - $249,999	3.00%
$250,000 - $499,999	2.00%
$500,000 - $999,999	1.75%
$1,000,000 - $3,999,999	0.75%
$4,000,000 - $9,999,999	0.50%
> $10,000,000	0.25%

No dealer commission will be paid on purchases by employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SARSEPs. Payments will equal 1.00% of the purchase price of the C Class shares sold by the financial intermediary. The distributor will retain the 12b-1 fee paid by the C Class of funds for the first 12 months after the shares are purchased. This fee is intended in part to permit the distributor to recoup a portion of ongoing sales commissions to dealers plus financing costs, if any. Beginning with the first day of the 13th month, the distributor will make the C Class distribution and individual shareholder services fee payments described above to the financial intermediaries involved on a quarterly basis. In addition, C Class purchases, and A Class purchases greater than $1,000,000 are subject to a CDSC as described in the prospectuses.

From time to time, the distributor may make additional payments to dealers, including but not limited to payment assistance for conferences and seminars, provision of sales or training programs for dealer employees and/or the public (including, in some cases, payment for travel expenses for registered representatives and other dealer employees who participate), advertising and sales campaigns about a fund or funds, and assistance in financing dealer-sponsored events. Other payments may be offered as well, and all such payments will be consistent with applicable law, including the then-current rules of the Financial Industry Regulatory Authority. Such payments will not change the price paid by investors for shares of the funds.

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Appendix C – Buying and Selling Fund Shares

Information about buying, selling, exchanging and, if applicable, converting fund shares is contained in the funds’ prospectuses. The prospectuses are available to investors without charge and may be obtained by calling us.

Employer-Sponsored Retirement Plans

Certain group employer-sponsored retirement plans that hold a single account for all plan participants with the fund, or that are part of a retirement plan or platform offered by banks, broker-dealers, financial advisors or insurance companies, or serviced by retirement recordkeepers are eligible to purchase Investor, A, C, R, R5 and R6 Class shares. Employer-sponsored retirement plans are not eligible to purchase I or Y Class shares. A and C Class purchases are available at net asset value with no dealer commission paid to the financial professional and do not incur a CDSC. A, C and R Class shares purchased in employer-sponsored retirement plans are subject to applicable distribution and service (12b-1) fees, which the financial intermediary begins receiving immediately at the time of purchase. American Century Investments does not impose minimum initial investment amount, plan size or participant number requirement by class for employer-sponsored retirement plans; however, financial intermediaries or plan recordkeepers may require plans to meet different requirements.

Examples of employer-sponsored retirement plans include the following:


•	401(a) plans


•	pension plans


•	profit sharing plans


•	401(k) plans (including plans with a Roth 401(k)

feature, SIMPLE 401(k) plans and Solo 401(k) plans


•	money purchase plans


•	target benefit plans


•	Taft-Hartley multi-employer pension plans


•	SERP and “Top Hat” plans


•	ERISA trusts


•	employee benefit plans and trusts


•	employer-sponsored health plans


•	457 plans


•	KEOGH or HR(10) plans


•	employer-sponsored 403(b) plans

(including plans with a Roth 403(b) feature)


•	nonqualified deferred compensation plans


•	nonqualified excess benefit plans


•	nonqualified retirement plans

Traditional and Roth IRAs are not considered employer-sponsored retirement plans, and SIMPLE IRAs, SEP IRAs and SARSEPs are collectively referred to as Business IRAs. Business IRAs that (i) held shares of an A Class fund prior to March 1, 2009 that received sales charge waivers or (ii) held shares of an Advisor Class fund that was renamed A Class on March 1, 2010, may permit additional purchases by new and existing participants in A Class shares without an initial sales charge.

R Class IRA Accounts established prior to August 1, 2006 may make additional purchases.

Waiver of Minimum Initial Investment Amounts — I Class

A financial intermediary, upon receiving prior approval from American Century Investments, may waive applicable minimum initial investment amounts per shareholder for I Class shares in the following situations:


•	Broker-dealers, banks, trust companies, registered investment advisors and other financial intermediaries may make I Class shares available with no initial investment minimum in fee based advisory programs or accounts where such program or account is traded omnibus by the financial intermediary;


•	Qualified Tuition Programs under Section 529 that have entered into an agreement with the distributor; and


•	Certain other situations deemed appropriate by American Century Investments.

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Appendix D – Explanation of Fixed-Income Securities Ratings

As described in the prospectuses, the funds invest in fixed-income securities. Those investments, however, are subject to certain credit quality restrictions, as noted in the prospectuses and in this statement of additional information. The following are examples of the rating categories referenced in the prospectus disclosure.



Ratings of Corporate Debt Securities
Standard & Poor’s Long-Term Issue Credit Ratings*
Category	Definition
AAA	An obligation rated ‘AAA’ has the highest rating assigned by Standard & Poor’s. The obligor’s capacity to meet its financial commitment on the obligation is extremely strong.
AA	An obligation rated ‘AA’ differs from the highest-rated obligations only to a small degree. The obligor’s capacity to meet its financial commitment on the obligation is very strong.
A	An obligation rated ‘A’ is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher-rated categories. However, the obligor’s capacity to meet its financial commitment on the obligation is still strong.
BBB	An obligation rated ‘BBB’ exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.
BB;B; CCC; CC; and C	Obligations rated ‘BB’, ‘B’, ‘CCC’, ‘CC’, and ‘C’ are regarded as having significant speculative characteristics. ‘BB’ indicates the least degree of speculation and ‘C’ the highest. While such obligations will likely have some quality and protective characteristics, these may be outweighed by large uncertainties or major exposures to adverse conditions.
BB	An obligation rated ‘BB’ is less vulnerable to nonpayment than other speculative issues. However, it faces major ongoing uncertainties or exposure to adverse business, financial, or economic conditions which could lead to the obligor’s inadequate capacity to meet its financial commitment on the obligation.
B	An obligation rated ‘B’ is more vulnerable to nonpayment than obligations rated ‘BB’, but the obligor currently has the capacity to meet its financial commitment on the obligation. Adverse business, financial, or economic conditions will likely impair the obligor’s capacity or willingness to meet its financial commitment on the obligation.
CCC	An obligation rated ‘CCC’ is currently vulnerable to nonpayment, and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation. In the event of adverse business, financial, or economic conditions, the obligor is not likely to have the capacity to meet its financial commitment on the obligation.
CC	An obligation rated ‘CC’ is currently highly vulnerable to nonpayment. The ‘CC’ rating is used when a default has not yet occurred, but Standard & Poor’s expects default to be a virtual certainty, regardless of the anticipated time to default.
C	An obligation rated ‘C’ is currently highly vulnerable to nonpayment,and the obligation is expected to have lower relative seniority or lower ultimate recovery compared to obligations that are rated higher.
D	An obligation rated ‘D’ is in default or in breach of an imputed promise. For non-hybrid capital instruments, the ‘D’ rating category is used when payments on an obligation are not made on the date due, unless Standard & Poor’s believes that such payments will be made within five business days in the absence of a stated grace period or within the earlier of the stated grace period or 30 calendar days. The ‘D’ rating also will be used upon the filing of a bankruptcy petition or the taking of similar action and where default on an obligation is a virtual certainty, for example due to automatic stay provisions. An obligation’s rating is lowered to ‘D’ if it is subject to a distressed exchange offer.
NR	This indicates that no rating has been requested, or that there is insufficient information on which to base a rating, or that Standard & Poor’s does not rate a particular obligation as a matter of policy.

*The ratings from “AA” to “CCC” may be modified by the addition of a plus (+) or minus (-) sign to show relative standing within the major rating categories.



Moody’s Investors Service, Inc. Global Long-Term Rating Scale
Category	Definition
Aaa	Obligations rated Aaa are judged to be of the highest quality, subject to the lowest level of credit risk.
Aa	Obligations rated Aa are judged to be of high quality and are subject to very low credit risk.
A	Obligations rated A are judged to be upper-medium grade and are subject to low credit risk.
Baa	Obligations rated Baa are judged to be medium-grade and subject to moderate credit risk and as such may possess certain speculative characteristics.

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Ba	Obligations rated Ba are judged to be speculative and are subject to substantial credit risk.
B	Obligations rated B are considered speculative and are subject to high credit risk.
Caa	Obligations rated Caa are judged to be speculative of poor standing and are subject to very high credit risk.
Ca	Obligations rated Ca are highly speculative and are likely in, or very near, default, with some prospect of recovery of principal and interest.
C	Obligations rated C are the lowest rated and are typically in default, with little prospect for recovery of principal or interest.

Note: Moody’s appends numerical modifiers 1, 2, and 3 to each generic rating classification from Aa through Caa. The

modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a

mid-range ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category. Additionally, a

“(hyb)” indicator is appended to all ratings of hybrid securities issued by banks, insurers, finance companies, and securities

firms.



Fitch Investors Service, Inc. Long-Term Ratings
Category	Definition
AAA	Highest credit quality. ‘AAA’ ratings denote the lowest expectation of credit risk. They are assigned only in cases of exceptionally strong capacity for payment of financial commitments. This capacity is highly unlikely to be adversely affected by foreseeable events.
AA	Very high credit quality. ‘AA’ ratings denote expectations of very low credit risk. They indicate very strong capacity for payment of financial commitments. This capacity is not significantly vulnerable to foreseeable events.
A	High credit quality. ‘A’ ratings denote expectations of low credit risk. The capacity for payment of financial commitments is considered strong. This capacity may, nevertheless, be more vulnerable to adverse business or economic conditions than is the case for higher ratings.
BBB	Good credit quality. ‘BBB’ ratings indicate that expectations of credit risk are currently low. The capacity for payment of financial commitments is considered adequate but adverse business or economic conditions are more likely to impair this capacity.
BB	Speculative. ‘BB’ ratings indicate an elevated vulnerability to credit risk, particularly in the event of adverse changes in business or economic conditions over time; however, business or financial alternatives may be available to allow financial commitments to be met.
B	Highly speculative. ‘B’ ratings indicate that material credit risk is present.
CCC	Substantial credit risk. ‘CCC’ ratings indicate that substantial credit risk is present.
CC	Very high levels of credit risk. ‘CC’ ratings indicate very high levels of credit risk.
C	Exceptionally high levels of credit risk. ‘C’ indicates exceptionally high levels of credit risk.

Defaulted obligations typically are not assigned ‘RD’ or ‘D’ ratings, but are instead rated in the ‘B’ to ‘C’ rating categories, depending upon their recovery prospects and other relevant characteristics. This approach better aligns obligations that have comparable overall expected loss but varying vulnerability to default and loss.

Notes: The modifiers “+” or “-“ may be appended to a rating to denote relative status within major rating categories. Such suffixes are not added to the ‘AAA’ obligation rating category, or to corporate finance obligation ratings in the categories below ‘CCC’.



Standard & Poor’s Corporate Short-Term Note Ratings
Category	Definition
A-1	A short-term obligation rated ‘A-1’ is rated in the highest category by Standard & Poor’s. The obligor’s capacity to meet its financial commitment on the obligation is strong. Within this category, certain obligations are designated with a plus sign (+). This indicates that the obligor’s capacity to meet its financial commitment on these obligations is extremely strong.
A-2	A short-term obligation rated ‘A-2’ is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rating categories. However, the obligor’s capacity to meet its financial commitment on the obligation is satisfactory.
A-3	A short-term obligation rated ‘A-3’ exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

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B	A short-term obligation rated ‘B’ is regarded as vulnerable and has significant speculative characteristics. The obligor currently has the capacity to meet its financial commitments; however, it faces major ongoing uncertainties which could lead to the obligor’s inadequate capacity to meet its financial commitments.
C	A short-term obligation rated ‘C’ is currently vulnerable to nonpayment and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation.
D	A short-term obligation rated ‘D’ is in default or in breach of an imputed promise. For non-hybrid capital instruments, the ‘D’ rating category is used when payments on an obligation are not made on the date due, unless Standard & Poor’s believes that such payments will be made within any stated grace period. However, any stated grace period longer than five business days will be treated as five business days. The ‘D’ rating also will be used upon the filing of a bankruptcy petition or the taking of a similar action and where default on an obligation is a virtual certainty, for example due to automatic stay provisions. An obligation’s rating is lowered to ‘D’ if it is subject to a distressed exchange offer.



Moody’s Global Short-Term Rating Scale
Category	Definition
P-1	Issuers (or supporting institutions) rated Prime-1 have a superior ability to repay short-term debt obligations.
P-2	Issuers (or supporting institutions) rated Prime-2 have a strong ability to repay short-term debt obligations.
P-3	Issuers (or supporting institutions) rated Prime-3 have an acceptable ability to repay short-term obligations.
NP	Issuers (or supporting institutions) rated Not Prime do not fall within any of the Prime rating categories.



Fitch Investors Service, Inc. Short-Term Ratings
Category	Definition
F1	Highest short-term credit quality. Indicates the strongest intrinsic capacity for timely payment of financial commitments; may have an added “+” to denote any exceptionally strong credit feature.
F2	Good short-term credit quality. Good intrinsic capacity for timely payment of financial commitments.
F3	Fair short-term credit quality. The intrinsic capacity for timely payment of financial commitments is adequate.
B	Speculative short-term credit quality. Minimal capacity for timely payment of financial commitments, plus heightened vulnerability to near term adverse changes in financial and economic conditions.
C	High short-term default risk. Default is a real possibility.
RD	Restricted default. Indicates an entity that has defaulted on one or more of its financial commitments, although it continues to meet other financial obligations. Typically applicable to entity ratings only.
D	Default Indicates a broad-based default event for an entity, or the default of a short-term obligation.



Standard & Poor’s Municipal Short-Term Note Ratings
Category	Definition
SP-1	Strong capacity to pay principal and interest. An issue determined to possess a very strong capacity to pay debt service is given a plus (+) designation.
SP-2	Satisfactory capacity to pay principal and interest, with some vulnerability to adverse financial and economic changes over the term of the notes.
SP-3	Speculative capacity to pay principal and interest.



Moody’s US Municipal Short-Term Debt Ratings
Category	Definition
MIG 1	This designation denotes superior credit quality. Excellent protection is afforded by established cash flows, highly reliable liquidity support, or demonstrated broad-based access to the market for refinancing.
MIG 2	This designation denotes strong credit quality. Margins of protection are ample, although not as large as in the preceding group.
MIG 3	This designation denotes acceptable credit quality. Liquidity and cash-flow protection may be narrow, and market access for refinancing is likely to be less well-established.
SG	This designation denotes speculative-grade credit quality. Debt instruments in this category may lack sufficient margins of protection.

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Moody’s Demand Obligation Ratings
Category	Definition
VMIG 1	This designation denotes superior credit quality. Excellent protection is afforded by the superior short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
VMIG 2	This designation denotes strong credit quality. Good protection is afforded by the strong short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
VMIG 3	This designation denotes acceptable credit quality. Adequate protection is afforded by the satisfactory short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.
SG	This designation denotes speculative-grade credit quality. Demand features rated in this category may be supported by a liquidity provider that does not have an investment grade short-term rating or may lack the structural and/or legal protections necessary to ensure the timely payment of purchase price upon demand.

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Appendix E – Proxy Voting Policies

American Century Investment Management, Inc. (the “Advisor”) is the investment manager for a variety of advisory clients, including the American Century family of funds. In such capacity, the Advisor has been delegated the authority to vote proxies with respect to investments held in the accounts it manages. The following is a statement of the proxy voting policies that have been adopted by the Advisor. In the exercise of proxy voting authority which has been delegated to it by particular clients, the Advisor will apply the following policies in accordance with, and subject to, any specific policies that have been adopted by the client and communicated to and accepted by the Advisor in writing.


A.	General Principles

In providing the service of voting client proxies, the Advisor is guided by general fiduciary principles, must act prudently, solely in the interest of its clients, and must not subordinate client interests to unrelated objectives. Except as otherwise indicated in these Policies, the Advisor will vote all proxies with respect to investments held in the client accounts it manages. The Advisor will attempt to consider all factors of its vote that could affect the value of the investment. Although in most instances the Advisor will vote proxies consistently across all client accounts, the votes will be based on the best interests of each client. As a result, accounts managed by the Advisor may at times vote differently on the same proposals. Examples of when an account’s vote might differ from other accounts managed by the Advisor include, but are not limited to, proxy contests and proposed mergers. In short, the Advisor will vote proxies in the manner that it believes will do the most to maximize shareholder value.


B.	Specific Proxy Matters

1. Routine Matters

a. Election of Directors

(1)

Generally. The Advisor will generally support the election of directors that result in a board made up of a majority of independent directors. In general, the Advisor will vote in favor of management’s director nominees if they are running unopposed. The Advisor believes that management is in the best possible position to evaluate the qualifications of directors and the needs and dynamics of a particular board. The Advisor of course maintains the ability to vote against any candidate whom it feels is not qualified or if there are specific concerns about the individual, such as allegations of criminal wrongdoing or breach of fiduciary responsibilities. Additional information the Advisor may consider concerning director nominees include, but is not limited to, whether (1) there is an adequate explanation for repeated absences at board meetings, (2) the nominee receives non-board fee compensation, or (3) there is a family relationship between the nominee and the company’s chief executive officer or controlling shareholder. When management’s nominees are opposed in a proxy contest, the Advisor will evaluate which nominees’ publicly-announced management policies and goals are most likely to maximize shareholder value, as well as the past performance of the incumbents.


(2)	Committee Service. The Advisor will withhold votes for non-independent directors who serve on the audit, compensation, and/or nominating committees of the board.


(3)	Classification of Boards. The Advisor will support proposals that seek to declassify boards. Conversely, the Advisor will oppose efforts to adopt classified board structures.


(4)	Majority Independent Board. The Advisor will support proposals calling for a majority of independent directors on a board. The Advisor believes that a majority of independent directors can help to facilitate objective decision making and enhances accountability to shareholders.

(5)

Majority Vote Standard for Director Elections. The Advisor will vote in favor of proposals calling for directors to be elected by an affirmative majority of the votes cast in a board election, provided that the proposal allows for a plurality voting standard in the case of contested elections. The Advisor may consider voting against such shareholder proposals where a company’s board has adopted an alternative measure, such as a director resignation policy, that provides a meaningful alternative to the majority voting standard and appropriately addresses situations where an incumbent director fails to receive the support of the majority of the votes cast in an uncontested election.


(6)	Withholding Campaigns. The Advisor will support proposals calling for shareholders to withhold votes for directors where such actions will advance the principles set forth in paragraphs (1) through (5) above.

b. Ratification of Selection of Auditors

The Advisor will generally rely on the judgment of the issuer’s audit committee in selecting the independent auditors who will provide the best service to the company. The Advisor believes that independence of the auditors is paramount and will vote against auditors whose independence appears to be impaired. The Advisor will vote against proposed auditors in those circumstances where (1) an auditor has a financial interest in or association with the company, and is therefore not independent; (2) non-audit fees comprise more than 50% of the total fees paid by the company to the audit firm; or (3)

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there is reason to believe that the independent auditor has previously rendered an opinion to the issuer that is either inaccurate or not indicative of the company’s financial position.

2. Compensation Matters

a. Executive Compensation

(1)

Advisory Vote on Compensation. The Advisor believes there are more effective ways to convey concerns about compensation than through an advisory vote on compensation (such as voting against specific excessive incentive plans or withholding votes from compensation committee members). The Advisor will consider and vote on a case-by-case basis on say-on-pay proposals and will generally support management proposals unless specific concerns exist, including if the Advisor concludes that executive compensation is (i) misaligned with shareholder interests, (ii) unreasonable in amount, or (iii) not in the aggregate meaningfully tied to the company’s performance.


(2)	Frequency of Advisory Votes on Compensation. The Advisor generally supports the triennial option for the frequency of say-on-pay proposals, but will consider management recommendations for an alternative approach.

b. Equity Based Compensation Plans

The Advisor believes that equity-based incentive plans are economically significant issues upon which shareholders are entitled to vote. The Advisor recognizes that equity-based compensation plans can be useful in attracting and maintaining desirable employees. The cost associated with such plans must be measured if plans are to be used appropriately to maximize shareholder value. The Advisor will conduct a case-by-case analysis of each stock option, stock bonus or similar plan or amendment, and generally approve management’s recommendations with respect to adoption of or amendments to a company’s equity-based compensation plans, provided that the total number of shares reserved under all of a company’s plans is reasonable and not excessively dilutive.

The Advisor will review equity-based compensation plans or amendments thereto on a case-by-case basis. Factors that will be considered in the determination include the company’s overall capitalization, the performance of the company relative to its peers, and the maturity of the company and its industry; for example, technology companies often use options broadly throughout its employee base which may justify somewhat greater dilution.

Amendments which are proposed in order to bring a company’s plan within applicable legal requirements will be reviewed by the Advisor’s legal counsel; amendments to executive bonus plans to comply with IRS Section 162(m) disclosure requirements, for example, are generally approved.

The Advisor will generally vote against the adoption of plans or plan amendments that:


•	Provide for immediate vesting of all stock options in the event of a change of control of the company without reasonable safeguards against abuse (see “Anti-Takeover Proposals” below);


•	Reset outstanding stock options at a lower strike price unless accompanied by a corresponding and proportionate reduction in the number of shares designated. The Advisor will generally oppose adoption of stock option plans that explicitly or historically permit repricing of stock options, regardless of the number of shares reserved for issuance, since their effect is impossible to evaluate;


•	Establish restriction periods shorter than three years for restricted stock grants;


•	Do not reasonably associate awards to performance of the company; or


•	Are excessively dilutive to the company.

3. Anti-Takeover Proposals

In general, the Advisor will vote against any proposal, whether made by management or shareholders, which the Advisor believes would materially discourage a potential acquisition or takeover. In most cases an acquisition or takeover of a particular company will increase share value. The adoption of anti-takeover measures may prevent or frustrate a bid from being made, may prevent consummation of the acquisition, and may have a negative effect on share price when no acquisition proposal is pending. The items below discuss specific anti-takeover proposals.

a. Cumulative Voting

The Advisor will vote in favor of any proposal to adopt cumulative voting and will vote against any proposal to eliminate cumulative voting that is already in place, except in cases where a company has a staggered board. Cumulative voting gives minority shareholders a stronger voice in the company and a greater chance for representation on the board. The Advisor believes that the elimination of cumulative voting constitutes an anti-takeover measure.

b. Staggered Board

If a company has a “staggered board,” its directors are elected for terms of more than one year and only a segment of the

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board stands for election in any year. Therefore, a potential acquiror cannot replace the entire board in one year even if it controls a majority of the votes. Although staggered boards may provide some degree of continuity and stability of leadership and direction to the board of directors, the Advisor believes that staggered boards are primarily an anti-takeover device and will vote against establishing them and for eliminating them. However, the Advisor does not necessarily vote against the re-election of directors serving on staggered boards.

c. “Blank Check” Preferred Stock

Blank check preferred stock gives the board of directors the ability to issue preferred stock, without further shareholder approval, with such rights, preferences, privileges and restrictions as may be set by the board. In response to a hostile takeover attempt, the board could issue such stock to a friendly party or “white knight” or could establish conversion or other rights in the preferred stock which would dilute the common stock and make an acquisition impossible or less attractive. The argument in favor of blank check preferred stock is that it gives the board flexibility in pursuing financing, acquisitions or other proper corporate purposes without incurring the time or expense of a shareholder vote. Generally, the Advisor will vote against blank check preferred stock. However, the Advisor may vote in favor of blank check preferred if the proxy statement discloses that such stock is limited to use for a specific, proper corporate objective as a financing instrument.

d. Elimination of Preemptive Rights

When a company grants preemptive rights, existing shareholders are given an opportunity to maintain their proportional ownership when new shares are issued. A proposal to eliminate preemptive rights is a request from management to revoke that right.

While preemptive rights will protect the shareholder from having its equity diluted, it may also decrease a company’s ability to raise capital through stock offerings or use stock for acquisitions or other proper corporate purposes. Preemptive rights may therefore result in a lower market value for the company’s stock. In the long term, shareholders could be adversely affected by preemptive rights. The Advisor generally votes against proposals to grant preemptive rights, and for proposals to eliminate preemptive rights.

e. Non-targeted Share Repurchase

A non-targeted share repurchase is generally used by company management to prevent the value of stock held by existing shareholders from deteriorating. A non-targeted share repurchase may reflect management’s belief in the favorable business prospects of the company. The Advisor finds no disadvantageous effects of a non-targeted share repurchase and will generally vote for the approval of a non-targeted share repurchase subject to analysis of the company’s financial condition.

f. Increase in Authorized Common Stock

The issuance of new common stock can also be viewed as an anti-takeover measure, although its effect on shareholder value would appear to be less significant than the adoption of blank check preferred. The Advisor will evaluate the amount of the proposed increase and the purpose or purposes for which the increase is sought. If the increase is not excessive and is sought for proper corporate purposes, the increase will be approved. Proper corporate purposes might include, for example, the creation of additional stock to accommodate a stock split or stock dividend, additional stock required for a proposed acquisition, or additional stock required to be reserved upon exercise of employee stock option plans or employee stock purchase plans. Generally, the Advisor will vote in favor of an increase in authorized common stock of up to 100%; increases in excess of 100% are evaluated on a case-by-case basis, and will be voted affirmatively if management has provided sound justification for the increase.

g. “Supermajority” Voting Provisions or Super Voting Share Classes

A “supermajority” voting provision is a provision placed in a company’s charter documents which would require a “supermajority” (ranging from 66 to 90%) of shareholders and shareholder votes to approve any type of acquisition of the company. A super voting share class grants one class of shareholders a greater per-share vote than those of shareholders of other voting classes. The Advisor believes that these are standard anti-takeover measures and will generally vote against them. The supermajority provision makes an acquisition more time-consuming and expensive for the acquiror. A super voting share class favors one group of shareholders disproportionately to economic interest. Both are often proposed in conjunction with other anti-takeover measures.

h. “Fair Price” Amendments

This is another type of charter amendment that would require an offeror to pay a “fair” and uniform price to all shareholders in an acquisition. In general, fair price amendments are designed to protect shareholders from coercive, two-tier tender offers in which some shareholders may be merged out on disadvantageous terms. Fair price amendments also have an anti-takeover impact, although their adoption is generally believed to have less of a negative effect on stock price

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than other anti-takeover measures. The Advisor will carefully examine all fair price proposals. In general, the Advisor will vote against fair price proposals unless the Advisor concludes that it is likely that the share price will not be negatively affected and the proposal will not have the effect of discouraging acquisition proposals.

i. Limiting the Right to Call Special Shareholder Meetings.

The corporation statutes of many states allow minority shareholders at a certain threshold level of ownership (frequently 10%) to call a special meeting of shareholders. This right can be eliminated (or the threshold increased) by amendment to the company’s charter documents. The Advisor believes that the right to call a special shareholder meeting is significant for minority shareholders; the elimination of such right will be viewed as an anti-takeover measure and the Advisor will generally vote against proposals attempting to eliminate this right and for proposals attempting to restore it.

j. Poison Pills or Shareholder Rights Plans

Many companies have now adopted some version of a poison pill plan (also known as a shareholder rights plan). Poison pill plans generally provide for the issuance of additional equity securities or rights to purchase equity securities upon the occurrence of certain hostile events, such as the acquisition of a large block of stock.

The basic argument against poison pills is that they depress share value, discourage offers for the company and serve to “entrench” management. The basic argument in favor of poison pills is that they give management more time and leverage to deal with a takeover bid and, as a result, shareholders may receive a better price. The Advisor believes that the potential benefits of a poison pill plan are outweighed by the potential detriments. The Advisor will generally vote against all forms of poison pills.

The Advisor will, however, consider on a case-by-case basis poison pills that are very limited in time and preclusive effect. The Advisor will generally vote in favor of such a poison pill if it is linked to a business strategy that will - in our view - likely result in greater value for shareholders, if the term is less than three years, and if shareholder approval is required to reinstate the expired plan or adopt a new plan at the end of this term.

k. Golden Parachutes

Golden parachute arrangements provide substantial compensation to executives who are terminated as a result of a takeover or change in control of their company. The existence of such plans in reasonable amounts probably has only a slight anti-takeover effect. In voting, the Advisor will evaluate the specifics of the plan presented.

l. Reincorporation

Reincorporation in a new state is often proposed as one part of a package of anti-takeover measures. Several states (such as Pennsylvania, Ohio and Indiana) now provide some type of legislation that greatly discourages takeovers. Management believes that Delaware in particular is beneficial as a corporate domicile because of the well-developed body of statutes and case law dealing with corporate acquisitions.

The Advisor will examine reincorporation proposals on a case-by-case basis. Generally, if the Advisor believes that the reincorporation will result in greater protection from takeovers, the reincorporation proposal will be opposed. The Advisor will also oppose reincorporation proposals involving jurisdictions that specify that directors can recognize non-shareholder interests over those of shareholders. When reincorporation is proposed for a legitimate business purpose and without the negative effects identified above, the Advisor will generally vote affirmatively.

m. Confidential Voting

Companies that have not previously adopted a “confidential voting” policy allow management to view the results of shareholder votes. This gives management the opportunity to contact those shareholders voting against management in an effort to change their votes.

Proponents of secret ballots argue that confidential voting enables shareholders to vote on all issues on the basis of merit without pressure from management to influence their decision. Opponents argue that confidential voting is more expensive and unnecessary; also, holding shares in a nominee name maintains shareholders’ confidentiality. The Advisor believes that the only way to insure anonymity of votes is through confidential voting, and that the benefits of confidential voting outweigh the incremental additional cost of administering a confidential voting system. Therefore, the Advisor will generally vote in favor of any proposal to adopt confidential voting.

n. Opting In or Out of State Takeover Laws

State takeover laws typically are designed to make it more difficult to acquire a corporation organized in that state. The Advisor believes that the decision of whether or not to accept or reject offers of merger or acquisition should be made by the shareholders, without unreasonably restrictive state laws that may impose ownership thresholds or waiting periods on potential acquirors. Therefore, the Advisor will generally vote in favor of opting out of restrictive state takeover laws.

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4. Transaction Related Proposals

The Advisor will review transaction related proposals, such as mergers, acquisitions, and corporate reorganizations, on a case-by-case basis, taking into consideration the impact of the transaction on each client account. In some instances, such as the approval of a proposed merger, a transaction may have a differential impact on client accounts depending on the securities held in each account. For example, whether a merger is in the best interest of a client account may be influenced by whether an account holds, and in what proportion, the stock of both the acquirer and the acquiror. In these circumstances, the Advisor may determine that it is in the best interests of the accounts to vote the accounts’ shares differently on proposals related to the same transaction.

5. Other Matters

a. Proposals Involving Environmental, Social, and Governance ("ESG") Matters

The Advisor believes that ESG issues can potentially impact an issuer's long-term financial performance and has developed an analytical framework, as well as a proprietary assessment tool, to integrate risks and opportunities stemming from ESG issues into our investment process. This ESG integration process extends to our proxy voting practices in that our ESG Proxy Team analyzes on a case-by-case basis the financial materiality and potential risks or economic impact of the ESG issues underpinning proxy proposals and makes voting recommendations based thereon for the Advisor's consideration. The ESG Proxy Team will generally recommend support for well-targeted ESG proposals if it believes that there is a rational linkage between a proposal, its economic impact, and its potential to maximize long-term shareholder value.

Where the economic effect of such proposals is unclear and there is not a specific written client-mandate, the Advisor believes it is generally impossible to know how to vote in a manner that would accurately reflect the views of the Advisor’s clients, and, therefore, the Advisor will generally rely on management’s assessment of the economic effect if the Advisor believes the assessment is not unreasonable.

Shareholders may also introduce proposals which are the subject of existing law or regulation. Examples of such proposals would include a proposal to require disclosure of a company’s contributions to political action committees or a proposal to require a company to adopt a non-smoking workplace policy. The Advisor believes that such proposals may be better addressed outside the corporate arena and, absent a potential economic impact, will generally vote with management’s recommendation. In addition, the Advisor will generally vote against any proposal which would require a company to adopt practices or procedures which go beyond the requirements of existing, directly applicable law.

b. Anti-Greenmail Proposals

“Anti-greenmail” proposals generally limit the right of a corporation, without a shareholder vote, to pay a premium or buy out a 5% or greater shareholder. Management often argues that they should not be restricted from negotiating a deal to buy out a significant shareholder at a premium if they believe it is in the best interest of the company. Institutional shareholders generally believe that all shareholders should be able to vote on such a significant use of corporate assets. The Advisor believes that any repurchase by the company at a premium price of a large block of stock should be subject to a shareholder vote. Accordingly, it will generally vote in favor of anti-greenmail proposals.

c. Indemnification

The Advisor will generally vote in favor of a corporation’s proposal to indemnify its officers and directors in accordance with applicable state law. Indemnification arrangements are often necessary in order to attract and retain qualified directors. The adoption of such proposals appears to have little effect on share value.

d. Non-Stock Incentive Plans

Management may propose a variety of cash-based incentive or bonus plans to stimulate employee performance. In general, the cash or other corporate assets required for most incentive plans is not material, and the Advisor will vote in favor of such proposals, particularly when the proposal is recommended in order to comply with IRC Section 162(m) regarding salary disclosure requirements. Case-by-case determinations will be made of the appropriateness of the amount of shareholder value transferred by proposed plans.

e. Director Tenure

These proposals ask that age and term restrictions be placed on the board of directors. The Advisor believes that these types of blanket restrictions are not necessarily in the best interests of shareholders and therefore will vote against such proposals, unless they have been recommended by management.

f. Directors’ Stock Options Plans

The Advisor believes that stock options are an appropriate form of compensation for directors, and the Advisor will generally vote for director stock option plans which are reasonable and do not result in excessive shareholder dilution. Analysis of such proposals will be made on a case-by-case basis, and will take into account total board compensation and

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the company’s total exposure to stock option plan dilution.

g. Director Share Ownership

The Advisor will generally vote against shareholder proposals which would require directors to hold a minimum number of the company’s shares to serve on the Board of Directors, in the belief that such ownership should be at the discretion of Board members.

h. Non-U.S. Proxies

The Advisor will generally evaluate non-U.S. proxies in the context of the voting policies expressed herein but will also, where feasible, take into consideration differing laws, regulations, and practices in the relevant foreign market in determining if and how to vote. There may also be circumstances when practicalities and costs involved with non-U.S. investing make it disadvantageous to vote shares. For instance, the Advisor generally does not vote proxies in circumstances where share blocking restrictions apply, when meeting attendance is required in person, or when current share ownership disclosure is required.


C.	Use of Proxy Advisory Services

The Adviser may retain proxy advisory firms to provide services in connection with voting proxies, including, without limitation, to provide information on shareholder meeting dates and proxy materials, translate proxy materials printed in a foreign language, provide research on proxy proposals and voting recommendations in accordance with the voting policies expressed herein, provide systems to assist with casting the proxy votes, and provide reports and assist with preparation of filings concerning the proxies voted.

Prior to the selection of a proxy advisory firm and periodically thereafter, the Advisor will consider whether the proxy advisory firm has the capacity and competency to adequately analyze proxy issues and the ability to make recommendations based on material accurate information in an impartial manner. Such considerations may include some or all of the following (i) periodic sampling of votes cast through the firm’s systems to determine that votes are in accordance with the Advisor’s policies and its clients best interests, (ii) onsite visits to the proxy advisory firm’s office and/or discussions with the firm to determine whether the firm continues to have the resources (e.g. staffing, personnel, technology, etc.) capacity and competency to carry out its obligations to the Advisor, (iii) a review of the firm’s policies and procedures, with a focus on those relating to identifying and addressing conflicts of interest and monitoring that current and accurate information is used in creating recommendations, (iv) requesting that the firm notify the Advisor if there is a change in the firm’s material policies and procedures, particularly with respect to conflicts, or material business practices (e.g., entering or exiting new lines of business), and reviewing any such change, and (v) in case of an error made by the firm, discussing the error with the firm and determining whether appropriate corrective and preventative action is being taken. In the event the Advisor discovers an error in the research or voting recommendations provided by the firm, it will take reasonable steps to investigate the error and seek to determine whether the firm is taking reasonable steps to reduce similar errors in the future.

While the Advisor takes into account information from many different sources, including independent proxy advisory services, the decision on how to vote proxies will be made in accordance with these policies and will not be delegated to a proxy advisory service.


D.	Monitoring Potential Conflicts of Interest

Corporate management has a strong interest in the outcome of proposals submitted to shareholders. As a consequence, management often seeks to influence large shareholders to vote with their recommendations on particularly controversial matters. In the vast majority of cases, these communications with large shareholders amount to little more than advocacy for management’s positions and give the Advisor’s staff the opportunity to ask additional questions about the matter being presented. Companies with which the Advisor has direct business relationships could theoretically use these relationships to attempt to unduly influence the manner in which the Advisor votes on matters for its clients. To ensure that such a conflict of interest does not affect proxy votes cast for the Advisor’s clients, our proxy voting personnel regularly catalog companies with whom the Advisor has significant business relationships; all discretionary (including case-by-case) voting for these companies will be voted by the client or an appropriate fiduciary responsible for the client (e.g., a committee of the independent directors of a fund or the trustee of a retirement plan).

In addition, to avoid any potential conflict of interest that may arise when one American Century fund owns shares of another American Century fund, the Advisor will “echo vote” such shares, if possible. Echo voting means the Advisor will vote the shares in the same proportion as the vote of all of the other holders of the fund’s shares. So, for example, if shareholders of a fund cast 80% of their votes in favor of a proposal and 20% against the proposal, any American Century fund that owns shares of such fund will cast 80% of its shares in favor of the proposal and 20% against. When this is not possible (as in the case of the “NT” funds, where the other American Century funds are the only shareholders), the shares of the underlying fund (e.g. the “NT” fund) will be voted in the same proportion as the vote of the shareholders of the corresponding American Century policy portfolio for proposals common to both funds. For example, NT Growth Fund shares will be echo voted in accordance with the votes of the Growth Fund shareholders. In the case where the policy portfolio does not have a common proposal, shares will be voted in consultation with a committee of the independent directors.

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The voting policies expressed above are of course subject to modification in certain circumstances and will be reexamined from time to time. With respect to matters that do not fit in the categories stated above, the Advisor will exercise its best judgment as a fiduciary to vote in the manner which will most enhance shareholder value.

Case-by-case determinations will be made by the Advisor’s staff, which is overseen by the General Counsel of the Advisor, in consultation with equity managers. Electronic records will be kept of all votes made.

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Notes



American Century Investments americancentury.com
Retail Investors P.O. Box 419200 Kansas City, Missouri 64141-6200 1-800-345-2021 or 816-531-5575	Financial Professionals P.O. Box 419385 Kansas City, Missouri 64141-6385 1-800-345-6488

Investment Company Act File No. 811-06441

CL-SAI-92584 2003

PART C OTHER INFORMATION

Item 28. Exhibits

(a) (1) Amended and Restated Agreement and Declaration of Trust, dated March 26, 2004 (filed electronically as Exhibit a to Post-Effective Amendment No. 19 to the Registration Statement of the Registrant on April 29, 2004, File No. 33-43321, and incorporated herein by reference).

(2) Amendment No. 1 to the Amended and Restated Agreement and Declaration of Trust, dated June 14, 2004 (filed electronically as Exhibit a2 to Post-Effective Amendment No. 21 to the Registration Statement of the Registrant on July 29, 2004, File No. 33-43321, and incorporated herein by reference).

(3) Amendment No. 2 to the Amended and Restated Agreement and Declaration of Trust, dated March 8, 2007 (filed electronically as Exhibit a3 to Post-Effective Amendment No. 25 to the Registration Statement of the Registrant on April 30, 2007, File No. 33-43321, and incorporated herein by reference).

(4) Amendment No. 3 to the Amended and Restated Agreement and Declaration of Trust, dated August 31, 2007 (filed electronically as Exhibit a4 to Post-Effective Amendment No. 26 to the Registration Statement of the Registrant on September 27, 2007, File No. 33-43321, and incorporated herein by reference).

(5) Amendment No. 4 to the Amended and Restated Agreement and Declaration of Trust, dated September 28, 2011 (filed electronically as Exhibit a5 to Post-Effective Amendment No. 32 to the Registration Statement of the Registrant on October 28, 2011, File No. 33-43321, and incorporated herein by reference).

(6) Amendment No. 5 to the Amended and Restated Agreement and Declaration of Trust, dated April 5, 2012 (filed electronically as Exhibit a6 to Post-Effective Amendment No. 36 to the Registration Statement of the Registrant on October 26, 2012, File No. 33-43321, and incorporated herein by reference).

(7) Amendment No. 6 to the Amended and Restated Agreement and Declaration of Trust, dated April 4, 2013 (filed electronically as Exhibit a7 to Post-Effective Amendment No. 38 to the Registration Statement of the Registrant on July 25, 2013, File No. 33-43321, and incorporated herein by reference).

(8) Amendment No. 7 to the Amended and Restated Agreement and Declaration of Trust, dated April 30, 2014 (filed electronically as Exhibit a8 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(9) Amendment No. 8 to the Amended and Restated Agreement and Declaration of Trust, dated March 29, 2016 (filed electronically as Exhibit a9 to Post-Effective Amendment No. 52 to the Registration Statement of the Registrant on February 27, 2017, File No. 33-43321, and incorporated herein by reference).

(10) Amendment No. 9 to the Amended and Restated Agreement and Declaration of Trust, dated March 24, 2017 (filed electronically as Exhibit a10 to Post-Effective Amendment No. 54 to the Registration Statement of the Registrant on April 7, 2017, File No. 33-43321, and incorporated herein by reference).

(11) Amendment No. 10 to the Amended and Restated Agreement and Declaration of Trust, dated March 24, 2017 (filed electronically as Exhibit a11 to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(12) Amendment No. 11 to the Amended and Restated Agreement and Declaration of Trust, dated June 14, 2017 (filed electronically as Exhibit a12 to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(b) Amended and Restated Bylaws, dated June 19, 2019, are included herein.

(c) Registrant hereby incorporates by reference, as though set forth fully herein, Article III, IV, V, VI and Article VIII of Registrant’s Amended and Restated Agreement and Declaration of Trust, appearing as Exhibit (a) herein and Article II, Article VII, and Article IX of Registrant’s Amended and Restated Bylaws, appearing as Exhibit (b) herein.

(d) (1) Management Agreement with American Century Investment Management, Inc., effective as of July 16, 2010 (filed electronically as Exhibit d to Post-Effective Amendment No. 30 to the Registration Statement of the Registrant on October 28, 2010, File No. 33-43321, and incorporated herein by reference).

(2) Amendment No. 1 to Management Agreement with American Century Investment Management, Inc., effective as of July 26, 2013 (filed electronically as Exhibit d2 to Post-Effective Amendment No. 38 to the Registration Statement of the Registrant on July 25, 2013, File No. 33-43321, and incorporated herein by reference).

(3) Amendment No. 2 to Management Agreement with American Century Investment Management, Inc., effective as of April 10, 2017 (filed electronically as Exhibit d3 to Post-Effective Amendment No. 54 to the Registration Statement of the Registrant on April 7, 2017, File No. 33-43321, and incorporated herein by reference).

(4) Amendment No. 3 to Management Agreement with American Century Investment Management, Inc., effective as of July 28, 2017 (filed electronically as Exhibit d4 to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(5) Management Agreement with American Century Investment Management, Inc., effective as of January 31, 2012 (filed electronically as Exhibit d2 to Post-Effective Amendment No. 34 to the Registration Statement of the Registrant on January 30, 2012, File No. 33-43321, and incorporated herein by reference).

(6) Amendment No. 1 to Management Agreement with American Century Investment Management, Inc., effective as of July 26, 2013 (filed electronically as Exhibit d4 to Post-Effective Amendment No. 38 to the Registration Statement of the Registrant on July 25, 2013, File No. 33-43321, and incorporated herein by reference).

(7) Amendment No. 2 to Management Agreement with American Century Investment Management, Inc., effective as of July 24, 2014 (filed electronically as Exhibit d5 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(8) Amendment No. 3 to Management Agreement with American Century Investment Management, Inc., effective as of April 10, 2017 (filed electronically as Exhibit d6 to Post-Effective Amendment No. 54 to the Registration Statement of the Registrant on April 7, 2017, File No. 33-43321, and incorporated herein by reference).

(9) Amendment No. 4 to Management Agreement with American Century Investment Management, Inc., effective as of July 28, 2017 (filed electronically as Exhibit d9 to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(10) Amendment No. 5 to Management Agreement with American Century Investment Management, Inc., effective as of August 1, 2018 (filed electronically as Exhibit d10 to Post-Effective Amendment No. 60 to the Registration Statement of the Registrant on February 28, 2019, File No. 33-43321, and incorporated herein by reference).

(e)(1) Amended and Restated Distribution Agreement with American Century Investment Services, Inc., effective as of July 28, 2017 (filed electronically as Exhibit e1 to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(2) Form of Dealer/Agency Agreement (filed electronically as Exhibit e2 to Post-Effective Amendment No. 75 to the Registration Statement of American Century Government Income Trust on April 7, 2017, File No. 002-99222, and incorporated herein by reference).

(f) Not applicable.

(g) (1) Master Custodian Agreement with State Street Bank and Trust Company, made as of July 29, 2011 (filed electronically as Exhibit g2 to Post-Effective Amendment No. 61 to the Registration Statement of American Century Government Income Trust on July 29, 2011, File No. 2-99222, and incorporated herein by reference).

(2) Amendment to Master Custodian Agreement with State Street Bank and Trust Company, made as of May 21, 2015 (filed electronically as Exhibit g3 to Post-Effective Amendment No. 57 to the Registration Statement of American Century Target Maturities Trust on January 28, 2016, File No. 002-94608, and incorporated herein by reference).

(3) Amendment to Master Custodian Agreement with State Street Bank and Trust Company, made as of January 9, 2018 (filed electronically as Exhibit g3 to Pre-Effective Amendment No. 2 to the Registration Statement of American Century ETF Trust on January 8, 2018, File No. 333-221045, and incorporated herein by reference).

(4) Notice of Additional Portfolios, dated November 29, 2011 (filed electronically as Exhibit g4 to Post-Effective Amendment No. 32 to the Registration Statement of American Century Strategic Asset Allocations, Inc. on January 30, 2012, File No. 33-79482, and incorporated herein by reference).

(5) Notice of Additional Portfolios, effective as of July 24, 2014 (filed electronically as Exhibit g4 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(h) Amended and Restated Transfer Agency Agreement with American Century Services Corporation, dated as of August 1, 2007 (filed electronically as Exhibit h1 to Post-Effective Amendment No. 26 to the Registration Statement of the Registrant on September 27, 2007, File No. 33-43321, and incorporated herein by reference).

(i) Opinion and Consent of Counsel, dated July 27, 2017 (filed electronically as Exhibit i to Post-Effective Amendment No. 56 to the Registration Statement of the Registrant on July 27, 2017, File No. 33-43321, and incorporated herein by reference).

(j) Consent of PricewaterhouseCoopers LLP, independent registered public accounting firm, dated February 27, 2020, is included herein.

(k) Not applicable.

(l) Not applicable.

(m) (1) Amended and Restated Master Distribution and Individual Shareholder Services Plan (A Class), dated January 1, 2008 (filed electronically as Exhibit m1 to Post-Effective Amendment No. 27 to the Registration Statement of the Registrant on October 28, 2008, File No. 33-43321, and incorporated herein by reference).

(2) Amendment No. 1 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (A Class), effective as of January 31, 2012 (filed electronically as Exhibit m2 to Post-Effective Amendment No. 34 to the Registration Statement of the Registrant on January 30, 2012, File No. 33-43321, and incorporated herein by reference).

(3) Amendment No. 2 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (A Class), effective as of July 24, 2014 (filed electronically as Exhibit m3 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(4) Amended and Restated Master Distribution and Individual Shareholder Services Plan (C Class), dated January 1, 2008 (filed electronically as Exhibit m3 to Post-Effective Amendment No. 27 to the Registration Statement of the Registrant on October 28, 2008, File No. 33-43321, and incorporated herein by reference).

(5) Amendment No. 1 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (C Class), effective as of January 31, 2012 (filed electronically as Exhibit m4 to Post-Effective Amendment No. 34 to the Registration Statement of the Registrant on January 30, 2012, File No. 33-43321, and incorporated herein by reference).

(6) Amendment No. 2 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (C Class), effective as of July 24, 2014 (filed electronically as Exhibit m6 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(7) Amended and Restated Master Distribution and Individual Shareholder Services Plan (R Class), dated January 1, 2008 (filed electronically as Exhibit m4 to Post-Effective Amendment No. 27 to the Registration Statement of the Registrant on October 28, 2008, File No. 33-43321, and incorporated herein by reference).

(8) Amendment No. 1 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (R Class), effective as of January 31, 2012 (filed electronically as Exhibit m6 to Post-Effective Amendment No. 34 to the Registration Statement of the Registrant on January 30, 2012, File No. 33-43321, and incorporated herein by reference).

(9) Amendment No. 2 to Amended and Restated Master Distribution and Individual Shareholder Services Plan (R Class), effective as of July 24, 2014 (filed electronically as Exhibit m9 to Post-Effective Amendment No. 43 to the Registration Statement of the Registrant on July 23, 2014, File No. 33-43321, and incorporated herein by reference).

(n) Amended and Restated Multiple Class Plan, effective as of August 1, 2018 (filed electronically as Exhibit d10 to Post-Effective Amendment No. 60 to the Registration Statement of the Registrant on February 28, 2019, File No. 33-43321, and incorporated herein by reference).

(o) Reserved.

(p) (1) American Century Investments Code of Ethics (filed electronically as Exhibit p1 to Post-Effective Amendment No. 65 to the Registration Statement of American Century California Tax-Free and Municipal Funds on December 28, 2018, File No. 2-82734, and incorporated herein by reference).

(2) Independent Directors’ Code of Ethics amended February 28, 2000 (filed electronically as Exhibit p2 to Post-Effective Amendment No. 40 to the Registration Statement of American Century Target Maturities Trust on November 30, 2004, File No. 2-94608, and incorporated herein by reference).

(q) (1) Power of Attorney, dated September 27, 2019 (filed electronically as Exhibit q1 to Post-Effective Amendment No. 80 to the Registration Statement of American Century Municipal Trust on September 27, 2019, File No.002-91229, and incorporated herein by reference).

(2) Secretary’s Certificate, dated September 27, 2019 (filed electronically as Exhibit q2 to Post-Effective Amendment No. 80 to the Registration Statement of American Century Municipal Trust on September 27, 2019, File No.002-91229, and incorporated herein by reference).

Item 29. Persons Controlled by or Under Common Control with Registrant

Some of the trustees of the Registrant serve, in substantially identical capacities, other registered investment companies in the American Century family of funds. In addition, several of the officers of the Registrant serve as officers for other registered investment companies in the American Century family of funds, each of which has American Century Investment Management, Inc. as its investment advisor. Nonetheless, the Registrant takes the position that it is not under common control with other American Century investment companies because the power residing in the respective boards and officers arises as a result of an official position with the respective investment companies.

Item 30. Indemnification

As stated in Article VII, Section 3 of the Amended and Restated Declaration of Trust, incorporated herein by reference to Exhibit (a1)to the Registration Statement, “The Trustees shall be entitled and empowered to the fullest extent permitted by law to purchase insurance for and to provide by resolution or in the Bylaws for indemnification out of Trust assets for liability and for all expenses reasonably incurred or paid or expected to be paid by a Trustee or officer in connection with any claim, action, suit, or proceeding in which he becomes involved by virtue of his capacity or former capacity with the Trust. The provisions, including any exceptions and limitations concerning indemnification, may be set forth in detail in the Bylaws or in a resolution of the Trustees.”

The Registrant hereby incorporates by reference, as though set forth fully herein, Article VI of the Registrant’s Amended and Restated Bylaws, appearing as Exhibit (b) herein.

The Registrant has purchased an insurance policy insuring its officers and directors against certain liabilities which such officers and directors may incur while acting in such capacities and providing reimbursement to the Registrant for sums which it may be permitted or required to pay to its officers and directors by way of indemnification against such liabilities, subject in either case to clauses respecting deductibility and participation.

Item 31. Business and other Connections of Investment Advisor

In addition to serving as the Registrant’s advisor, American Century Investment Management, Inc. (ACIM) provides portfolio management services for other investment companies as well as for other business and institutional clients. Except as listed below, none of the directors or officers of the advisor are or have been engaged in any business, profession, vocation or employment of a substantial nature, other than on behalf of the advisor and its affiliates, within the last two fiscal years.

Michael Rode (Vice President of ACIM) Served as Managing Director, SunTrust Robinson Humphrey, 711 5th Avenue, New York, NY 10022, 2015 to 2017

Vidya Rajappa (Vice President of ACIM) Served as Senior Vice President, Alliance Bernstein, 1345 6th Ave, New York, NY 10105, 2001 to 2016

Hitesh Patel (Vice President of ACIM) Served as Senior Member, Alternative Investment Specialist Team, UBS Securities, 1285 Avenue of the Americas New York, NY 10019, 2014 to 2018

Robert Brookby (Vice President of ACIM) Served as Portfolio Manager, Putnam Investments, One Post Office Square, Boston MA 02109, 2008 to 2018

Joyce Huang (Vice President of ACIM) Served as Investment Director, First State Investments, 10 East 53rd Street, New York, NY 10017, 2017-2018 and Senior Investment Strategist, BNY Mellon Investment Management, 225 Liberty Street, New York, NY 10281, 2015-2016

John Zimmerman (Vice President of ACIM) Served as Managing Director, Perella Weinberg Partners, 767 Fifth Avenue, New York, NY 10153, 2010 to 2018

Christopher Chen (Vice President of ACIM) Served as Director and Client Portfolio Manager for Baring Asset Manager, 19/F Edinburgh Tower, 15 Queen’s Road Central, Hong Kong, Hong Kong, 2017 to 2018 and Client Portfolio Manager for Mirae Asset Global Investment, Level 15, Three Pacific Place, 1 Queen’s Road, Hong Kong, Hong Kong, 2015 to 2017.

Richard Adams (Vice President of ACIM) Served as Director - Client Portfolio Manager for Columbia Threadneedle Investments, 78 Cannon Street, London, EC4N 6AG, UK, 2014 to 2018

Charles Tan (Senior Vice President of ACIM) Served as Head of North American Fixed Income, Aberdeen Standard Investments, 1735 Market Street, Philadelphia, PA 19103, 2015 to 2018

Jason Greenblath (Vice President of ACIM) Served as Head of US Investment Grade Credit (2018 to 2019), Portfolio Manager US Credit (2012 to 2018) and Head of US Investment Grade Credit Research (2014 to 2018), Aberdeen Standard Investments, 1735 Market Street, Philadelphia, PA 19103

The principal address for ACIM is 4500 Main Street, Kansas City, MO 64111.

Item 32. Principal Underwriters

I. (a) American Century Investment Services, Inc. (ACIS) acts as principal underwriter for the following investment companies:

American Century Asset Allocation Portfolios, Inc.

American Century California Tax-Free and Municipal Funds

American Century Capital Portfolios, Inc.

American Century Government Income Trust

American Century Growth Funds, Inc.

American Century International Bond Funds

American Century Investment Trust

American Century Municipal Trust

American Century Mutual Funds, Inc.

American Century Quantitative Equity Funds, Inc.

American Century Strategic Asset Allocations, Inc.

American Century Target Maturities Trust

American Century Variable Portfolios, Inc.

American Century Variable Portfolios II, Inc.

American Century World Mutual Funds, Inc.

ACIS is registered with the Securities and Exchange Commission as a broker-dealer and is a member of the Financial Industry Regulatory Authority. ACIS is located at 4500 Main Street, Kansas City, Missouri 64111. ACIS is a wholly-owned subsidiary of American Century Companies, Inc.

(b) The following is a list of the directors, executive officers and partners of ACIS as of February 16, 2020:



Name and Principal Business Address*	Positions and Offices With Underwriter	Positions and Offices With Registrant

Joe Schultz	Director, President and Chief Executive Officer	none

Karen Heath-Wade	Director and Senior Vice President	none

Mark Najarian	Director and Senior Vice President	none

Gary P. Kostuke	Senior Vice President	none

Richard T. Luchinsky	Senior Vice President	none

Wayne Park	Senior Vice President	none

Michael J. Raddie	Senior Vice President	none

Brian Schappert	Senior Vice President	none



Name and Principal Business Address*	Positions and Offices With Underwriter	Positions and Offices With Registrant
Elizabeth A. Young	Chief Privacy Officer, Senior AML Officer and Vice President	none

Ward D. Stauffer	Secretary	Secretary

Charles A. Etherington	Assistant Secretary and General Counsel	Senior Vice President and General Counsel

Brian L. Brogan	Assistant Secretary	Assistant Vice President and Assistant Secretary

Otis H. Cowan	Assistant Secretary	Assistant Vice President and Assistant Secretary

Janet A. Nash	Assistant Secretary	none

David H. Reinmiller	Assistant Secretary	Vice President

Robert Allen	Vice President	none

Ryan Ander	Vice President	none

Matthew R. Beck	Vice President	none

Stacey L. Belford	Vice President	none

Michael Bell	Vice President	none

Bradley Bendle	Vice President	none

Stacy Bernstein	Vice President	none

Andrew M. Billingsley	Vice President	none

James D. Blythe	Vice President	none

Don Bonder	Vice President	none

Karyn Bostick	Vice President	none

Scott Boughton	Vice President	non

Emily Brockmeier	Vice President	none

Bruce W. Caldwell	Vice President	none

Justin Chilcote	Vice President	none

Alan D. Chingren	Vice President	none

Donell Chisolm	Vice President	none

Chatten Cowherd	Vice President	none

D. Alan Critchell, Jr.	Vice President	none

Jesse Daniels	Vice President	none

Terry Daugherty	Vice President	none



Name and Principal Business Address*	Positions and Offices With Underwriter	Positions and Offices With Registrant
Mario Davila	Vice President	none

Mark Davis	Vice President	none

Shane Dawe	Vice President	none

Ellen DeNicola	Vice President	none

David P. Donovan	Vice President	none

Gabriel Dorman	Vice President	none

Ryan C. Dreier	Vice President	none

Megan Ekleberry	Vice President	none

Kevin G. Eknaian	Vice President	none

Sean Ensminger	Vice President	none

Gregg Erdman	Vice President	none

Christopher Evans	Vice President	none

Jill A. Farrell	Vice President	none

Alex Fishman	Vice President	none

Peter Foley	Vice President	none

Samuel Foley	Vice President	none

Nathan Freeman	Vice President	none

Michael C. Galkoski	Vice President	none

Diane Gallagher	Vice President	none

Glenn Godin	Vice President	none

Stephen Gongola	Vice President	none

Wendy Goodyear	Vice President	none

Timothy R. Guay	Vice President	none

Brett G. Hart	Vice President	none

Juliana Hastings	Vice President	none

Tom Horning	Vice President	none

Robert O. Houston	Vice President	none

Jennifer Ison	Vice President	none

Christopher T. Jackson	Vice President	none

Michael A. Jackson	Vice President	none

Delia Kiely	Vice President	none



Name and Principal Business Address*	Positions and Offices With Underwriter	Positions and Offices With Registrant
Matthew S. Kives	Vice President	none

Matthew Kobata	Vice President	none

Joshua Kurtz	Vice President	none

Kyle Langan	Vice President	none

Jeffrey Leone	Vice President	none

Dennis Logan	Vice President	none

Brian Mayfield	Vice President	none

Thomas C. McCarthy	Vice President	none

Walter McGhee	Vice President	none

Alastair McKibbin	Vice President	none

Tod McMichael	Vice President	none

Ariella Menegon	Vice President	none

Marek Michejda	Vice President	none

Roger Miller	Vice President	none

Christopher M. Monachino	Vice President	none

Theodore Moran	Vice President	none

Nate Morris	Vice President	none

Susan M. Morris	Vice President	none

Jennifer Mulrooney	Vice President	none

Michael Nelligan	Vice President	none

Andrew Nepomuceno	Vice President	none

Kelly A. Ness	Vice President	none

John E. O’Connor	Vice President	none

Brad O’Neill	Vice President	none

Scott Pawlich	Vice President	none

Christy A. Poe	Vice President	none

Nathaniel Proctor	Vice President	none

William Rader	Vice President	none

Blake Reardon	Vice President	none

Cheryl Redline	Vice President and Treasurer	none

Gerald M. Rossi	Vice President	none



Name and Principal Business Address*	Positions and Offices With Underwriter	Positions and Offices With Registrant

Erik Schneberger	Vice President	none

Michael Schoonmaker	Vice President	none

Brian Schweisberger	Vice President	none

Matthew Sennet	Vice President	none

Paul Shahrokhi	Vice President	none

Tracey L. Shank	Vice President	none

Amy D. Shelton	Vice President and Chief Compliance Officer	Vice President and Chief Compliance Officer

Steven Silverman	Vice President	none

Richard Smith	Vice President	none

Debra K. Stalnaker	Vice President	none

Michael T. Sullivan	Vice President	none

Adam Tabor	Vice President	none

Lindsey Thompson	Vice President	none

Francis Tighe	Vice President	none

Tina Ussery-Franklin	Vice President	none

Ryan VanSickle	Vice President	none

Sean Walker	Vice President	none

Todd Williams	Vice President	none

Justin Wingate	Vice President	none

John Brereton Young	Vice President	none

* All addresses are 4500 Main Street, Kansas City, Missouri 64111

Item 33. Location of Accounts and Records - Not Applicable.

Item 34. Management Services - Not Applicable.

Item 35. Undertakings - Not Applicable.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement amendment pursuant to Rule 485(b) promulgated under the Securities Act of 1933, as amended, and has duly caused this amendment to be signed on its behalf by the undersigned, duly authorized, in the City of Kansas City, State of Missouri, on the 28th day of February, 2020.



	American Century International Bond Funds
	(Registrant)
	By: * ___________________________________ Patrick Bannigan President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement amendment has been signed by the following persons in the capacities and on the dates indicated.



SIGNATURES	TITLE	DATE

* _________________________________ Patrick Bannigan	President	February 28, 2020

* _________________________________ R. Wes Campbell	Chief Financial Officer and Treasurer	February 28, 2020

* _________________________________ Tanya S. Beder	Trustee	February 28, 2020

* _________________________________ Jeremy I. Bulow	Trustee	February 28, 2020

* _________________________________ Anne Casscells	Trustee	February 28, 2020

* _________________________________ Ronald J. Gilson	Chairman of the Board and Trustee	February 28, 2020

* _________________________________ Frederick L.A. Grauer	Trustee	February 28, 2020

* _________________________________ Jonathan D. Levin	Trustee	February 28, 2020



SIGNATURES	TITLE	DATE

* _________________________________ Peter F. Pervere	Trustee	February 28, 2020

* _________________________________ John B. Shoven	Trustee	February 28, 2020

* _________________________________ Jonathan S. Thomas	Trustee	February 28, 2020



*By:	/s/ Ashley Bergus
	Ashley Bergus
	Attorney in Fact
	(pursuant to Power of Attorney
	dated September 27, 2019)

EXHIBIT INDEX



EXHIBIT NUMBER	DESCRIPTION OF DOCUMENT

EXHIBIT (b)	Amended and Restated Bylaws, dated June 19, 2019

EXHIBIT (j)	Consent of PricewaterhouseCoopers LLP, independent registered public accounting firm, dated February 27, 2020


(a)	The record date for determining shareholders entitled to notice of or to vote at a meeting of shareholders shall be at the close of business on the business day next preceding the day on which notice is given or if notice is waived, at the close of business on the business day next preceding the day on which the meeting is held.


(a)	Determine the number of shares outstanding and the voting power of each, the shares represented at the meeting, the existence of a quorum and the authenticity, validity and effect of proxies;


(c)	Hear and determine all challenges and questions in any way arising in connection with the right to vote;


(g)	Do any other acts that may be proper to conduct the election or vote with fairness to all shareholders.


(a)	the approval of any action which under applicable law also requires shareholders' approval or approval of the outstanding shares, or requires approval by a majority of the entire Board or certain members of said Board;


(b)	the filling of vacancies on the Board of Trustees or in any committee;


(c)	the fixing of compensation of the trustees for serving on the Board of Trustees or on any committee;


(d)	the amendment or repeal of the Declaration of Trust or of the Bylaws or the adoption of new Bylaws;


(e)	the amendment or repeal of any resolution of the Board of Trustees which by its express terms is not so amendable or repealable; or


(f)	the appointment of any other committees of the Board of Trustees or the members of these committees.


(a)	there is a final decision on the merits by a court or other body before whom the Proceeding was brought that the Indemnitee was not liable by reason of Disabling Conduct; or


(b)	in the absence of such decision, the trustees, based upon a review of the facts, forms a reasonable belief that the Indemnitee was not liable by reason of Disabling Conduct, which reasonable belief may be formed:


(i)	by the vote of a majority of a quorum of trustees who are neither “interested persons” of the Trust as defined in Article 2(a)(19) of the Investment Company Act, nor parties to the Proceeding; or


(ii)	based on a written opinion of independent legal counsel.


(a)	obtains assurances that the advance will be repaid by (A) the Trust receiving collateral from the Indemnitee for his undertaking or (B) the Trust obtaining insurance against losses arising by reason of any lawful advances; or


(b)	has a reasonable belief that the Indemnitee has not engaged in Disabling Conduct and will ultimately be found entitled to indemnification, which reasonable belief may be formed:


(i)	by a majority of a quorum of trustees who are neither “interested persons” of the Trust as defined in Article 2(a)(19) of the Investment Company Act, nor parties to the Proceeding; or


(ii)	based upon a written opinion of an independent legal counsel that in turn is based on counsel’s review of readily available facts (which review shall not require a full trial-type inquiry).