SECURITIES, TRANSACTIONS, INVESTMENT TECHNIQUES AND RISKS

The following information supplements the discussion of the Fund’s securities and investment techniques that are described in the Prospectus.

Asset-Backed/Privately-Issued Mortgage-Backed Securities are issued by non-governmental entities and carry no direct or indirect government guarantee. The value and liquidity of asset-backed and mortgage-backed securities in which the Fund invests may be adversely affected by downturns in the sub-prime mortgage lending market. Concerns about defaults on sub-prime loans, which are made to borrowers with low credit ratings and other factors that increase the risk of default, have and may continue to create heightened volatility and turmoil in the credit markets. Asset-backed and mortgage-backed securities may be supported by credit enhancements. However, there can be no assurance that private insurers or guarantors can meet their obligations under the insurance policies or guarantee arrangements.

Asset-backed securities represent an interest in a pool of assets such as car loans and credit card receivables. Almost any type of fixed income assets (including other fixed income securities) may be used to create an asset-backed security. However, most asset-backed securities involve consumer or commercial debts with maturities of less than ten years. Asset-backed securities may take the form of commercial paper or notes, in addition to pass-through certificates or asset-backed bonds. Asset-backed securities also may resemble some types of collateralized mortgage obligations (CMOs).

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Payments on asset-backed securities depend upon assets held by the issuer and collections of the underlying loans. The value of these securities depends on many factors, including changing interest rates, the availability of information about the pool and its structure, the credit quality of the underlying assets, the market’s perception of the servicer of the pool, and any credit enhancement provided. Also, these securities may be subject to prepayment risk.

Mortgage-backed securities represent interests in pools of mortgages. The underlying mortgages normally have similar interest rates, maturities, and other terms. Mortgages may have fixed or adjustable interest rates. Adjustable rate mortgages are known as ARMs.

Mortgage-backed securities come in a variety of forms. Many have extremely complicated terms. The simplest form of mortgage-backed securities is a “pass-through certificate.” Holders of pass-through certificates receive a pro rata share of the payments from the underlying mortgages. Holders also receive a pro rata share of any prepayments, so they assume all the prepayment risk of the underlying mortgages.

CMOs are complicated instruments that allocate payments and prepayments from an underlying pass-through certificate among holders of different classes of mortgage-backed securities. This creates different prepayment and market risks for each CMO class.

In addition, CMOs may allocate interest payments to one class (Interest Only or IOs) and principal payments to another class (Principal Only or POs). POs increase in value when prepayment rates increase. In contrast, IOs decrease in value when prepayments increase, because the underlying mortgages generate fewer interest payments. However, IOs’ prices tend to increase when interest rates rise (and prepayments fall), making IOs a useful hedge against market risk.

Generally, homeowners have the option to prepay their mortgages at any time without penalty. Homeowners frequently refinance high rate mortgages when mortgage rates fall. This results in the prepayment of the mortgages underlying mortgage-backed securities, which deprives holders of the securities of the higher yields. Conversely, when mortgage rates increase, prepayments due to refinancings decline. This extends the life of mortgage-backed securities with lower yields. As a result, increases in prepayments of premium mortgage-backed securities, or decreases in prepayments of discount mortgage-backed securities, may reduce their yield and price.

This relationship between interest rates and mortgage prepayments makes the price of mortgage-backed securities more volatile than most other types of fixed income securities with comparable credit risks. Mortgage-backed securities tend to pay higher yields to compensate for this volatility.

CMOs may include planned amortization classes (PACs) and targeted amortization classes (TACs). PACs and TACs are issued with companion classes. PACs and TACs receive principal payments and prepayments at a specified rate. The companion classes receive principal payments and any prepayments in excess of this rate. In addition, PACs will receive the companion classes’ share of principal payments if necessary to cover a shortfall in the prepayment rate. This helps PACs and TACs to control prepayment risk by increasing the risk to their companion classes.

Unlike traditional fixed income securities, which pay a fixed rate of interest until maturity (when the entire principal amount is due), payments on mortgage-backed securities include both interest and a partial payment of principal. Partial payments of principal may be comprised of scheduled principal payments as well as unscheduled payments from the voluntary prepayment, refinancing, or foreclosure of the underlying loans. These unscheduled prepayments of principal create risks that can adversely affect the Fund if it is holding mortgage-backed securities. For example, when interest rates decline, the values of mortgage-backed securities generally rise. However, when interest rates decline, unscheduled prepayments can be expected to accelerate and the Fund would be required to reinvest the proceeds of the prepayments at the lower interest rates then available.

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Unscheduled prepayments would also limit the potential for capital appreciation on mortgage-backed securities. Conversely, when interest rates rise, the values of mortgage-backed securities generally fall. Since rising interest rates typically result in decreased prepayments, this could lengthen the average lives of mortgage-backed securities and cause their value to decline more than traditional fixed income securities.

Bank Instruments are unsecured interest-bearing deposits with banks. Bank instruments include bank accounts, time deposits, certificates of deposit, and banker’s acceptances. Instruments denominated in U.S. dollars and issued by non-U.S. branches of U.S. or foreign banks are commonly referred to as Eurodollar instruments. Instruments denominated in U.S. dollars and issued by U.S. branches of foreign banks are referred to as Yankee dollar instruments.

The Fund will invest in bank instruments that have been issued by banks and savings and loans that have capital, surplus and undivided profits of over $100 million, or whose principal amount is insured by the Bank Insurance Fund or the Savings Association Insurance Fund, which are administered by the Federal Deposit Insurance Corporation. Securities that are credit-enhanced with a bank’s irrevocable letter of credit or unconditional guaranty also will be treated as bank instruments.

Foreign Bank and Money Market Instruments . Eurodollar Certificates of Deposit (ECDs), Yankee dollar Certificates of Deposit (YCDs), and Eurodollar Time Deposits (ETDs) are all U.S. dollar denominated certificates of deposit. ECDs are issued by, and ETDs are deposits of, foreign banks or foreign branches of U.S. banks. YCDs are issued in the U.S. by branches and agencies of foreign banks. Europaper is dollar-denominated commercial paper and other short-term notes issued in the U.S. by foreign issuers.

ECDs, ETDs, YCDs, and Europaper have many of the same risks as other foreign securities. Examples of these risks include economic and political developments that may adversely affect the payment of principal or interest, foreign withholding or other taxes, difficulties in obtaining or enforcing a judgment against the issuing bank, and possible interruptions in the flow of international currency transactions. Also, the issuing banks or their branches are not necessarily subject to the same regulatory requirements that apply to domestic banks, such as reserve requirements, loan limitations, examinations, accounting, auditing, recordkeeping, and the public availability of information. These factors will be carefully considered by the Adviser in selecting these investments.

Borrowing . The Fund may borrow money directly or through reverse repurchase agreements and pledge some assets as collateral. If the Fund borrows, it will pay interest on borrowed money and may incur other transaction costs. These expenses could exceed the income received or capital appreciation realized by the Fund from any securities purchased with borrowed money. With respect to borrowings, the Fund is required to maintain continuous asset coverage within the limits of the 1940 Act, and as interpreted or modified by regulatory authority having jurisdiction, from time to time. Borrowing by the Fund will involve special risk considerations, including that the Fund may have to sell portfolio securities to reduce its borrowings and restore the appropriate asset coverage even if it must sell the securities at a loss.

The Corporation has established a line of credit with a bank by which the Fund may borrow money for temporary or emergency purposes.

The Corporation received an exemptive order from the Securities and Exchange Commission (SEC) on July 30, 2014 which permits the Fund to participate in an interfund lending program, subject to its investment policies and limitations. This program allows the Fund to lend cash to other BMO Funds for temporary purposes. The program is subject to a number of conditions, including the requirement that the interfund loan rate to be charged to the Fund under the program is (i) more favorable to the lending Fund than the rate it could otherwise obtain from investing cash in repurchase agreements or purchasing shares of a money market fund and (ii) more favorable to the borrowing Fund than the lowest interest rate at which bank short-term loans would be available to the Fund. The Fund will participate in the program only to the extent that its participation is consistent with the

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Fund’s investment policies and limitations. The Board is responsible for overseeing and periodically reviewing the interfund lending program.

Commercial Paper and Restricted and Illiquid Securities . Commercial paper represents an issuer’s draft or note with a maturity of less than nine months. Companies typically issue commercial paper to fund current expenditures. Most issuers constantly reissue their commercial paper and use the proceeds (or bank loans) to repay maturing paper. Commercial paper may default if the issuer cannot continue to obtain financing in this fashion. The short maturity of commercial paper reduces both the interest rate and credit risk as compared to other debt securities of the same issuer.

The Fund may invest in commercial paper issued under Section 4(a)(2) of the Securities Act of 1933, as amended (1933 Act). By law, the sale of Section 4(a)(2) commercial paper is restricted and is generally sold only to institutional investors, such as the Fund. The Fund must agree to purchase the paper for investment purposes only and not with a view to public distribution. Section 4(a)(2) commercial paper is normally resold to other institutional investors through investment dealers who make a market in Section 4(a)(2) commercial paper and, thus, provide liquidity.

The Adviser determines whether Section 4(a)(2) commercial paper and certain other restricted securities are liquid in accordance with the Fund’s procedures. Section 4(a)(2) commercial paper and other restricted securities that the Adviser has determined to be liquid are not subject to the Fund’s investment limitation applicable to illiquid securities.

Concentration . The Fund has adopted a fundamental investment policy that prohibits it from investing 25% or more of its assets in the securities of companies in any one industry (except as described under “Investment Limitations—Fundamental Limitations—Concentration of Investments”). This policy does not apply to securities in which the Fund may invest that are issued by other investment companies, or to securities issued or guaranteed by the U.S. government, any state or territory of the U.S., its agencies, instrumentalities, or political subdivisions. For purposes of the fundamental investment policy regarding industry concentration, “group of industries” means a group of related industries, as determined in good faith by the Adviser, based on published classifications or other sources.

Corporate Debt Securities are fixed income securities issued by businesses. Notes, bonds, debentures, and commercial paper are the most common types of corporate debt securities. The credit risks of corporate debt securities vary widely among issuers.

Credit Enhancement . Certain acceptable investments may be credit-enhanced by a guaranty, letter of credit, or insurance. The Adviser may evaluate a security based, in whole or in part, upon the financial condition of the party providing the credit enhancement (the credit enhancer). The bankruptcy, receivership, or default of the credit enhancer will adversely affect the quality and marketability of the underlying security. In certain cases, credit-enhanced securities may be treated as having been issued both by the issuer and the credit enhancer.

Demand Features . The Fund may purchase securities subject to a demand feature, which may take the form of a put or standby commitment. Demand features permit the holder to demand payment of the value of the security (plus any accrued interest) from either the issuer of the security or a third-party. Demand features help make a security more liquid, although an adverse change in the financial health of the provider of a demand feature (such as bankruptcy) will negatively affect the liquidity of the security. Other events also may terminate a demand feature which also causes liquidity to be affected.

Demand Master Notes are short-term borrowing arrangements between a corporation or government agency and an institutional lender (such as the Fund) payable upon demand by either party. A party may demand full or partial payment, and the notice period for demand typically ranges from one to seven days. Many master notes give the holder the option of increasing or decreasing the principal amount of the master note on a daily or weekly basis within certain limits. Demand master notes usually provide for floating or variable rates of interest.

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Duration is a measure of volatility in the price of a bond prior to maturity. Volatility is the magnitude of the change in the price of a bond relative to a change in the market interest rate. Volatility is based upon a bond’s coupon rate, maturity date and the level of market yields of similar bonds. Generally, bonds with lower coupons or longer maturities will be more volatile than bonds with higher coupons or shorter maturities. Duration combines these variables into a single measure of price sensitivity to interest rate changes. For example, if interest rates decline by 1%, the market value of a portfolio with a duration of five years would rise by approximately 5%. Conversely, if interest rates increase by 1%, the market value of the portfolio would decline by approximately 5%.

Fixed Income Securities generally pay interest at either a fixed or floating rate and provide more regular income than equity securities. However, the returns on fixed income securities are limited and normally do not increase with the issuer’s earnings. This limits the potential appreciation of fixed income securities as compared to equity securities. Fixed-rate securities and floating rate securities react differently as prevailing interest rates change.

Callable Securities . Certain fixed income securities in which the Fund invests are callable at the option of the issuer. Callable securities are subject to call risks. Call risks include the risk that the securities in which the Fund invests may be redeemed by the issuer before maturity. If this occurs, the Fund may have to reinvest the proceeds in securities that pay a lower interest rate, which may decrease the Fund’s yield.

Fixed Rate Debt Securities . Debt securities that pay a fixed interest rate over the life of the security and have a long-term maturity may have many characteristics of short-term debt. For example, the market may treat fixed-rate/long-term securities as short-term debt when a security’s market price is close to the call or redemption price, or if the security is approaching its maturity date when the issuer is more likely to call or redeem the debt.

As interest rates change, the market prices of fixed-rate debt securities are generally more volatile than the prices of floating rate debt securities. As interest rates rise, the prices of fixed-rate debt securities fall, and as interest rates fall, the prices of fixed-rate debt securities rise. For example, a bond that pays a fixed interest rate of 10% is more valuable to investors when prevailing interest rates are lower; this value is reflected in a higher price, or premium. Conversely, if interest rates are over 10%, the bond is less attractive to investors, and sells at a lower price, or discount.

Floating Rate Debt Securities . The interest rate paid on floating rate debt securities is reset periodically (e.g., every 90 days) to a predetermined index rate. Commonly used indices include 90-day or 180-day Treasury bill rates; one month or three month LIBOR; commercial paper rates; or the prime rate of interest of a bank. The prices of floating rate debt securities are not as sensitive to changes in interest rates as fixed rate debt securities because they behave like shorter-term securities and their interest rate is reset periodically.

Foreign Securities include securities (i) of issuers domiciled outside of the United States, including securities issued by foreign governments, (ii) that primarily trade on a foreign securities exchange or in a foreign market, or (iii) that are subject to substantial foreign risk based on factors such as whether a majority of an issuer’s revenue is earned outside of the United States and whether an issuer’s principal business operations are located outside of the United States.

Investing in foreign securities, including foreign corporate debt securities and foreign equity securities, involves certain risks not ordinarily associated with investments in securities of domestic issuers. Foreign securities markets have, for the most part, substantially less volume than the U.S. markets and securities of many foreign companies are generally less liquid and their prices more volatile than securities of U.S. companies. Less government supervision and regulation exist of foreign exchanges, brokers, and issuers than in the U.S. The rights of investors in certain foreign countries may be more limited than those of shareholders of U.S. issuers and investors may have greater difficulty taking appropriate legal action to enforce their rights in a foreign court than in a U.S. court. Investing in foreign securities also involves risks associated with government, economic,

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monetary, and fiscal policies (such as the adoption of protectionist trade measures), possible foreign withholding taxes on dividends and interest, possible taxes on trading profits, inflation, and interest rates, economic expansion or contraction, and global or regional political, economic, or banking crises. Furthermore, the risk exists of possible seizure, nationalization, or expropriation of the foreign issuer or foreign deposits, and the possible adoption of foreign government restrictions such as exchange controls. Also, foreign issuers are not necessarily subject to uniform accounting, auditing, and financial reporting standards, practices, and requirements comparable to those applicable to domestic issuers and, as a result, less publicly available information on such foreign issuers may be available than a domestic issuer.

Funding Agreements (Agreements) are investment instruments issued by U.S. insurance companies. Pursuant to such Agreements, the Fund may make cash contributions to a deposit fund of the insurance company’s general or separate accounts. The insurance company then credits guaranteed interest to the Fund. The insurance company may assess periodic charges against an Agreement for expense and service costs allocable to it and the charges will be deducted from the value of the deposit fund. The purchase price paid for an Agreement becomes part of the general assets of the issuer and the Agreement is paid from the general assets of the issuer. The Fund will only purchase Agreements from issuers that meet quality and credit standards established by the Adviser. Generally, Agreements are not assignable or transferable without the permission of the issuing insurance companies and an active secondary market in Agreements does not currently exist. Also, the Fund may not have the right to receive the principal amount of an Agreement from the insurance company on seven days’ notice or less. Therefore, Agreements are typically considered to be illiquid investments.

General Tax Risks . The Fund’s investments and investment strategies may be subject to special and complex federal income tax provisions that may, among other things: (i) disallow, suspend or otherwise limit the allowance of certain losses or deductions; (ii) accelerate income to the Fund; (iii) convert long-term capital gain taxable at lower rates into short-term capital gain or ordinary income taxable at higher rates; (iv) convert an ordinary loss or a deduction into a capital loss (the deductibility of which is more limited); (v) treat dividends that would otherwise constitute qualified dividend income as non-qualified dividend income; or (vii) create a risk that the Fund will fail the diversification and source of income requirements under Subchapter M of the Code, which could cause the Fund to fail to qualify for the tax treatment applicable to a regulated investment company (RIC).

Lending of Portfolio Securities . In order to generate additional income, the Fund may lend portfolio securities through BMO Harris Bank N.A. (BMO Harris Bank), as agent. When the Fund lends portfolio securities, it will receive either cash or liquid securities as collateral from the borrower. The Fund will reinvest cash collateral in short-term liquid securities that qualify as an otherwise acceptable investment for the Fund. If the market value of the loaned securities increases, the borrower must furnish additional collateral to the Fund. During the time portfolio securities are on loan, the borrower pays the Fund any dividends or interest paid on such securities. Loans are subject to termination at the option of the Fund or the borrower. The lending Fund may pay reasonable administrative and custodial fees in connection with a loan and may pay a negotiated portion of the interest earned on the cash or equivalent collateral to a securities lending agent or broker.

When the Fund lends its portfolio securities, it may not be able to get them back from the borrower on a timely basis, in which case the Fund may lose certain investment opportunities, as well as the opportunity to vote the securities. The Fund is also subject to the risks associated with the investments of cash collateral, usually fixed income securities risk. If the Fund receives a payment from a borrower in lieu of the dividends on the loaned securities, such payment will generally be taxed as ordinary income for federal income tax purposes and will not be treated as “qualified dividend income.”

Municipal Securities are fixed income securities issued by states, counties, cities, and other political subdivisions and authorities. Although most municipal securities are exempt from regular federal income tax, municipalities also may issue securities subject to federal alternative minimum tax (AMT) and taxable securities. Tax-exempt securities are generally classified by their source of payment. The ability of a governmental issuer to

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make payments on its municipal obligations can be adversely affected by factors such as budget shortfalls, weak economic conditions, and reduced levels of aid to governments. Other uncertainties applicable to municipal securities may include legislation or litigation that changes the taxation of municipal securities or the rights of municipal security holders in the event of bankruptcy. Certain provisions of the U.S. Bankruptcy Code governing such bankruptcies are unclear, and the application of state law to municipal security issuers could provide varying results among the states or among the municipal security issuers within a state. These uncertainties could have a significant impact on the prices of the municipal securities in which the Fund invests.

General Obligation Bonds are supported by the issuer’s full faith and credit. The issuer must levy and collect taxes sufficient to pay principal and interest on the bonds. However, the issuer’s authority to levy additional taxes may be limited by its charter or state law.

Special Revenue Bonds are payable solely from specific revenues received by the issuer. The revenues may consist of specific taxes, assessments, tolls, fees, or other types of municipal revenues. For example, a municipality may issue bonds to build a toll road, and pledge the tolls to repay the bonds. Bondholders could not collect from the municipality’s general taxes or revenues. Therefore, any shortfall in the tolls normally would result in a default on the bonds.

Private Activity Bonds are special revenue bonds used to finance private entities. For example, a municipality may issue bonds to finance a new factory to improve its local economy. The municipality would lend the proceeds to the company using the factory, and the company would agree to make loan payments sufficient to repay the bonds. The bonds would be payable solely from the company’s loan payments, and not from any other revenues of the municipality. Therefore, any default on the loan normally would result in a default on the bonds.

The interest on many types of private activity bonds is subject to the federal AMT. The Fund may invest in bonds subject to the federal AMT.

Anticipation Notes are securities issued in anticipation of the receipt of taxes, grants, bond proceeds, or other municipal revenues. For example, many municipalities collect property taxes once a year. Such municipalities may issue tax anticipation notes to fund their operations prior to collecting these taxes. The issuers then repay the tax anticipation notes at the end of their fiscal year, either with collected taxes or proceeds from newly issued notes or bonds.

Tax Increment Financing Bonds are payable from increases in taxes or other revenues attributable to projects financed by the bonds. For example, a municipality may issue these bonds to redevelop a commercial area. The tax increment financing bonds would be payable solely from any increase in sales taxes collected from merchants in the area. The bonds could default if merchants’ sales, and related tax collections, failed to increase as anticipated.

Municipal Securities include:

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Variable Rate Municipal Securities . Variable interest rates generally reduce changes in the market value of municipal securities from their original purchase prices. Accordingly, as interest rates decrease or increase, the potential for capital appreciation or depreciation is less for variable rate municipal securities than for fixed rate obligations. Many municipal securities with variable interest rates purchased by the Fund are subject to repayment of principal (usually within seven days) on the Fund’s demand. For purposes of determining the Fund’s average maturity, the maturities of these variable rate demand municipal securities (including participation interests) are the longer of the periods remaining until the next readjustment of their interest rates or the periods remaining until their principal amounts can be recovered by exercising the right to demand payment. The terms of these variable rate demand instruments require payment of principal and accrued interest from the issuer of the municipal obligations, the issuer of the participation interests or a guarantor of either issuer.

Regulatory Changes Risk. The SEC adopted changes to the rules that govern the way in which money market funds are operated, many of which take effect in October 2016. These changes, which require some funds to operate with a floating NAV and amend the diversification, stress testing, and disclosure requirements applicable to money market funds, may affect the Fund’s investment strategies, operations, and/or return potential.

Repurchase Agreements and Reverse Repurchase Agreements . A repurchase agreement is a transaction in which the Fund buys a security from a dealer or bank and agrees to sell the security back at a mutually agreed upon time and price. The repurchase price exceeds the sale price, reflecting an agreed upon interest rate effective for the period the buyer owns the security subject to repurchase. The agreed upon interest rate is unrelated to the interest rate on that security. The Adviser will continually monitor the value of the underlying security to ensure that the value of the security always equals or exceeds the repurchase price. The Fund’s custodian is required to take possession of the securities subject to repurchase agreements. These securities are marked to market daily. To the extent that the original seller defaults and does not repurchase the securities from the Fund, the Fund could receive less than the repurchase price for such securities. In the event that such a defaulting seller files for bankruptcy or becomes insolvent, disposition of such securities by the Fund might be delayed pending court action. The Fund believes that, under the procedures normally in effect for custody of the portfolio securities subject to repurchase agreements, a court of competent jurisdiction would rule in favor of the Fund and allow retention or disposition of such securities. The Fund will only enter into repurchase agreements with banks and other recognized financial institutions, such as broker/dealers, that the Adviser has determined to be creditworthy.

Reverse repurchase agreement transactions are similar to borrowing cash. In a reverse repurchase agreement, the Fund sells a portfolio security to another person, such as a financial institution, broker or dealer, in return for a percentage of the instrument’s market value in cash, and agrees that on a stipulated date in the future the Fund will repurchase the portfolio security at a price equal to the original sale price plus interest. The Fund may use reverse repurchase agreements for liquidity and for avoiding a sale of portfolio instruments at a time when the sale may be deemed disadvantageous. However, entering into reverse repurchase agreements may expose the Fund to leverage risks.

When effecting reverse repurchase agreements, liquid assets of the Fund, in a dollar amount sufficient to make payment for the obligations to be purchased, are segregated on the trade date. These securities are marked to market daily and maintained until the transaction is settled.

During the period any reverse repurchase agreements are outstanding, but only to the extent necessary to assure completion of the reverse repurchase agreements, the Fund will restrict the purchase of portfolio instruments to money market instruments maturing on or before the expiration date of the reverse repurchase agreement.

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Sovereign Debt . The Fund may purchase sovereign debt. Sovereign debt differs from debt obligations issued by private entities in that, generally, remedies for defaults must be pursued in the courts of the defaulting party. Legal recourse is therefore limited. Political conditions, especially a sovereign entity’s willingness to meet the terms of its debt obligations, are of considerable significance. Also, there can be no assurance that the holders of commercial bank loans to the same sovereign entity may not contest payments to the holders of sovereign debt in the event of default under commercial bank loan agreements. Financial markets have recently experienced increased volatility due to the uncertainty surrounding the sovereign debt of certain European countries, which may have significant adverse effects on the economies of these countries and increase the risks of investing in sovereign debt.

A sovereign debtor’s willingness or ability to repay principal and pay interest in a timely manner may be affected by a variety of factors, including among others, 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 sovereign debtor’s policy toward principal international lenders, and the political constraints to which a sovereign debtor may be subject. A country whose exports are concentrated in a few commodities could be vulnerable to a decline in the international price of such commodities. Increased protectionism on the part of a country’s trading partners, or political changes in those countries, could also adversely affect its exports. Such events could diminish a country’s trade account surplus, if any, or the credit standing of a particular local government or agency. Another factor bearing on the ability of a country to repay sovereign debt is the level of the country’s international reserves. Fluctuations in the level of these reserves can affect the amount of foreign exchange readily available for external debt payments and, thus, could have a bearing on the capacity of the country to make payments on its sovereign debt.

To the extent that a country has a current account deficit (generally when its exports of merchandise and services are less than its country’s imports of merchandise and services plus net transfers (e.g., gifts of currency and goods) to foreigners), it may need to depend on loans from foreign governments, multilateral organizations or private commercial banks, aid payments from foreign governments, and inflows of foreign investment. The access of a country to these forms of external funding may not be certain and a withdrawal of external funding could adversely affect the capacity of a government to make payments on its obligations. In addition, the cost of servicing debt obligations can be adversely 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.

Foreign investment in certain sovereign debt is restricted or controlled to varying degrees. These restrictions or controls may at times limit or preclude foreign investment in such sovereign debt and increase the costs and expenses of the Fund. Certain countries in which the Fund may invest require governmental approval prior to investments by foreign persons, limit the amount of investment by foreign persons in a particular issuer, limit the investment by foreign persons only to a specific class of securities of an issuer that may have less advantageous rights than the classes available for purchase by domiciliaries of the countries or impose additional taxes on foreign investors. Certain issuers may require governmental approval for the repatriation of investment income, capital, or the proceeds of sales of securities by foreign investors. In addition, if a deterioration occurs in a country’s balance of payments, the country could impose temporary restrictions on foreign capital remittances. The Fund could be adversely affected by delays in, or a refusal to grant, any required governmental approval for repatriation of capital, as well as by the application to the Fund of any restrictions on investments. Investing in local markets may require the Fund to adopt special procedures, seek local government approvals, or take other actions, each of which may involve additional costs to the Fund.

The sovereign debt in which the Fund may invest includes Brady Bonds, which are securities created through the exchange of existing commercial bank loans to public and private entities in certain emerging markets for new bonds in connection with debt restructurings under a debt restructuring plan introduced by former U.S. Secretary of the Treasury, Nicholas F. Brady. Brady Bonds may be collateralized or uncollateralized and are issued in various currencies (but primarily the dollar). Dollar-denominated, collateralized Brady Bonds, which may be fixed-rate bonds or floating-rate bonds, are generally collateralized in full as to principal by U.S.

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Treasury zero coupon bonds having the same maturity as the Brady Bonds. Interest payments on these Brady Bonds generally are collateralized by cash or securities in an amount that, in the case of fixed rate bonds, is equal to at least one year of rolling interest payments or, in the case of floating rate bonds, initially is equal to at least one year’s rolling interest payments based on the applicable interest rate at that time and is adjusted at regular intervals thereafter. Brady Bonds are often viewed as having several valuation components: (1) the collateralized repayment of principal, if any, at final maturity, (2) the collateralized interest payments, if any, (3) the uncollateralized interest payments, and (4) any uncollateralized repayment of principal at maturity (these uncollateralized amounts constitute the “residual risk”). In light of the residual risk of Brady Bonds and, among other factors, the history of defaults with respect to commercial bank loans by public and private entities of countries issuing Brady Bonds, investments in Brady Bonds have speculative characteristics. The Fund may purchase Brady Bonds with no or limited collateralization, and will be relying for payment of interest and (except in the case of principal collateralized Brady Bonds) principal primarily on the willingness and ability of the foreign government to make payment in accordance with the terms of the Brady Bonds.

Temporary Investments . There may be times when market conditions warrant a defensive position. During these market conditions, the Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar weighted average maturity or investing in other securities that are eligible securities for purchase by money market funds as described in the “Fund Summary” section of the Prospectus and in accordance with federal laws concerning money market funds, in anticipation of, or in response to, adverse market economic, political, other conditions. The Fund’s temporary investments must be of comparable quality to its primary investments.

U.S. Government Securities . U.S. government securities include direct obligations of the U.S. government, including U.S. Treasury bills, notes, and bonds of varying maturities, and those issued or guaranteed by various U.S. government agencies and instrumentalities. Treasury securities are direct obligations of the federal government of the United States. Agency securities are issued or guaranteed by a federal agency or other government sponsored entity acting under federal authority. Some government entities are supported by the full faith and credit of the United States. Other government entities receive support through federal subsidies, loans, or other benefits. A few government entities have no explicit financial support, but are regarded as having implied support because the federal government sponsors their activities.

The Fund treats mortgage-backed securities guaranteed by a government sponsored entity as if issued or guaranteed by a federal agency. Although such a guarantee protects against credit risks, it does not reduce the market and prepayment risks.

Federal National Mortgage Association (Fannie Mae) and Federal Home Loan Mortgage Corporation (Freddie Mac) . Fannie Mae and Freddie Mac were placed into conservatorship by the Federal Housing Finance Agency (FHFA), an independent regulator, in 2008, and FHFA succeeded to all of their rights, titles, powers, and privileges. At the time Fannie Mae and Freddie Mac were placed in conservatorship, the U.S. Treasury established preferred stock purchase agreements pursuant to which the U.S. Treasury will contribute cash capital to maintain a positive net worth in each enterprise. These agreements were amended in December 2009 to permit the U.S. Treasury’s funding commitment to increase as necessary to accommodate any cumulative reduction in net worth of the enterprises for a three-year period. FHFA has the right to transfer or sell any asset or liability of Fannie Mae or Freddie Mac without any approval, assignment or consent, although FHFA has stated that it has no present intention to do so. In addition, holders of mortgage-backed securities issued by Fannie Mae or Freddie Mac may not enforce certain rights related to such securities against FHFA, or the enforcement of such rights may be delayed, during the conservatorship.

When-Issued and Delayed Delivery Transactions . These transactions are made to secure what is considered to be an advantageous price or yield. Settlement dates may be a month or more after entering into these transactions and the market values of the securities purchased may vary from the purchase prices. Other than normal transaction costs, no fees or expenses are incurred. However, liquid assets of the Fund are segregated on

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the Fund’s records on the trade date in an amount sufficient to make payment for the securities to be purchased. These assets are marked to market daily and are maintained until the transaction has been settled.

Zero Coupon Securities . Zero coupon securities in which the Fund may invest do not pay interest or principal until final maturity, unlike debt securities that provide periodic payments of interest (referred to as a “coupon payment”). Investors buy zero coupon securities at a price below the amount payable at maturity. The difference between the purchase price and the amount paid at maturity represents interest on the zero coupon security. Investors must wait until maturity to receive interest and principal, which increases the interest rate and credit risks of a zero coupon security. An investment in zero coupon securities may cause the Fund to recognize income and make required distributions to shareholders before it receives any cash payments on its investment. The Fund may have to dispose of its portfolio investments under disadvantageous circumstances or utilize leverage to generate sufficient cash to satisfy the distribution requirements for maintaining the Fund’s status as an RIC.

Portfolio Turnover . The Fund’s portfolio investments may be sold for a variety of reasons, such as a more favorable investment opportunity, market conditions, or other factors. A high rate of portfolio turnover (over 100%) may involve correspondingly greater transaction costs to the Fund and its shareholders. High portfolio turnover may result in the realization of substantial capital gains, including short-term capital gains taxable to shareholders at ordinary income rates.