Prospectus

December 18, 2015

Liquid Assets Portfolio

STIC Prime Portfolio

Treasury Portfolio

Government & Agency Portfolio

Government TaxAdvantage Portfolio

Tax-Free Cash Reserve Portfolio

Cash Management Classes

Liquid Assets Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

STIC Prime Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Treasury Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Government & Agency Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Government TaxAdvantage Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Tax-Free Cash Reserve Portfolio’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity.

As with all other mutual fund securities, the U.S. Securities and Exchange Commission (SEC) has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

You could lose money by investing in each Fund. Although each Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in each Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Each Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. Investments in each Fund are not guaranteed by a bank and investment is not a bank deposit.

Table of Contents

Fund Summaries	1
Liquid Assets Portfolio	1
STIC Prime Portfolio	3
Treasury Portfolio	5
Government & Agency Portfolio	7
Government TaxAdvantage Portfolio	8
Tax-Free Cash Reserve Portfolio	10
Investment Objective(s), Strategies, Risks and Portfolio Holdings	12
Liquid Assets Portfolio	12
STIC Prime Portfolio	14
Treasury Portfolio	16
Government & Agency Portfolio	17
Government TaxAdvantage Portfolio	18
Tax-Free Cash Reserve Portfolio	19
Fund Management	21
The Adviser(s)	21
Adviser Compensation	21
Other Information	21
Dividends and Distributions	21
Financial Highlights	23
Hypothetical Investment and Expense Information	24
Shareholder Account Information	A-1
Distribution and Service (12b-1) Fees	A-1
Purchasing Shares	A-1
Redeeming Shares	A-1
Pricing of Shares	A-3
Frequent Purchases and Redemptions of Fund Shares	A-3
Taxes	A-4
Important Notice Regarding Delivery of Security Holder Documents	A-5
Obtaining Additional Information Back Cover

                                   Short-Term Investment Trust

Fund Summaries

Liquid Assets Portfolio

the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions

may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

STIC Prime Portfolio

indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Cash Management	$23	$86	$156	$361

Principal Investment Strategies of the Fund

The Fund invests in high-quality U.S. dollar denominated obligations with maturities of 60 days or less, including: (i) securities issued by the U.S. Government or its agencies; (ii) certificates of deposit and time deposits from U.S. or foreign banks; (iii) repurchase agreements; (iv) commercial paper; and (v) municipal securities.

The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in repurchase agreement transactions that are collateralized by nongovernment securities such as equity securities and fixed income securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 60 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 60 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time

deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to

maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

Annual Total Returns

Cash Management Class year-to-date (ended September 30, 2015): 0.09%
Best Quarter (ended September 30, 2006, December 31, 2006 and September 30, 2007): 1.31%
Worst Quarter (ended September 30, 2014): 0.00%

Average Annual Total Returns (for the periods ended December 31, 2014)
	1 Year	5 Years	10 Years
Cash Management Class: Inception (6/30/1994)	0.07%	0.06%	1.61%

Management of the Fund

Investment Adviser: Invesco Advisers, Inc.

Purchase and Sale of Fund Shares

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Treasury Portfolio

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Class:	Cash Management
Management Fees	0.15%
Distribution and/or Service (12b-1) Fees	0.10
Other Expenses	0.02
Total Annual Fund Operating Expenses	0.27
Fee Waiver and/or Expense Reimbursement 1,2	0.05
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.22

1

Invesco Distributors, Inc. (Invesco Distributors) has contractually agreed to waive 0.02% of Rule 12b-1 distribution plan payments. Unless Invesco Distributors continues the fee waiver agreement, it will terminate on December 31, 2016. The fee waiver agreement cannot be terminated during its term.

2

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees and/or reimburse expenses to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed in the SAI) of Cash Management Class shares to 0.22% (after Rule 12b-1 fee waiver) of the Fund's average daily net assets. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2016. The fee waiver agreement cannot be terminated during its term.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost 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. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Cash Management	$23	$82	$147	$338

Principal Investment Strategies of the Fund

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in direct obligations of the U.S. Treasury including bills, notes and bonds, and repurchase agreements secured by those obligations. The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7, that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The

Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high

redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Government & Agency Portfolio

any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7, that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative,

regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

Average Annual Total Returns (for the periods ended December 31, 2014)
	1 Year	5 Years	10 Years
Cash Management Class: Inception (9/1/1998)	0.01%	0.02%	1.54%

Management of the Fund

Investment Adviser: Invesco Advisers, Inc.

Purchase and Sale of Fund Shares

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Government TaxAdvantage Portfolio

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Class:	Cash Management
Management Fees	0.20%
Distribution and/or Service (12b-1) Fees	0.10
Other Expenses	0.13
Total Annual Fund Operating Expenses	0.43
Fee Waiver and/or Expense Reimbursement 1,2	0.21
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.22

1

Invesco Distributors, Inc. (Invesco Distributors) has contractually agreed to waive 0.02% of Rule 12b-1 distribution plan payments. Unless Invesco Distributors continues the fee waiver agreement, it will terminate on December 31, 2016. The fee waiver agreement cannot be terminated during its term.

2

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees and/or reimburse expenses to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed in the SAI) of Cash Management Class shares to 0.22% (after Rule 12b-1 fee waiver) of the Fund's average daily net assets. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2016. The fee waiver agreement cannot be terminated during its term.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost 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. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Cash Management	$23	$117	$220	$522

Principal Investment Strategies of the Fund

The Fund invests at least 99.5% of its total assets in cash and Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. At the present time, the Fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury and Agency Securities.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund also seeks to distribute dividends that are exempt from state and local taxation in many states.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7, that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to

money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and

related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Tax-Free Cash Reserve Portfolio

preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund's direct investments that are counted toward the 80% investment requirement.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund invests primarily in high quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies and instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial

institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single

holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

Purchase and Sale of Fund Shares

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Cash Management Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions primarily are exempt from regular federal income tax. A portion of these distributions, however, may be subject to the federal alternative minimum tax and state and local taxes. The Fund may also make distributions that are taxable to you as ordinary income.

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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest up to 50% of its total assets in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the

terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser

or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

STIC Prime Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests in high-quality U.S. dollar denominated obligations with maturities of 60 days or less, including: (i) securities issued by the U.S. Government or its agencies; (ii) certificates of deposit and time deposits from U.S. or foreign banks; (iii) repurchase agreements; (iv) commercial paper; and (v) municipal securities.

The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in

repurchase agreement transactions that are collateralized by nongovernment securities such as equity securities and fixed income securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 60 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 60 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund's investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and

interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of

the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Treasury Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in direct obligations of the U.S. Treasury including bills, notes and bonds, and repurchase agreements secured by those obligations. The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser

or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Government & Agency Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market

conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Government TaxAdvantage Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests at least 99.5% of its total assets in cash and Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. At the present time, the Fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury and Agency Securities.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund also seeks to distribute dividends that are exempt from state and local taxation in many states.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money

market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the

Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Tax-Free Cash Reserve Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in debt securities that

(i) pay interest that is excluded from gross income for federal income tax purposes, and (ii) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund's direct investments that are counted toward the 80% investment requirement.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund invests primarily in high quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies and instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities. Synthetic municipal securities include variable rate instruments, which are created when fixed rate bonds are coupled with a third party demand feature.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other

investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain

restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or

otherwise adversely affect the current federal or state tax status of municipal securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Portfolio Holdings

Information concerning the Funds' portfolio holdings as well as their dollar-weighted average portfolio maturity and dollar-weighted average life to maturity as of the last business day of the preceding month will be posted on their Web site no later than five business days after the end of the month and remain posted on the Web site for six months thereafter.

A description of Fund policies and procedures with respect to the disclosure of Fund portfolio holdings is available in the SAI, which is available at www.invesco.com/us.

Funds described in this prospectus. Because they are not paid by the Funds, these marketing support payments and administrative support payments will not change the price paid by investors for the purchase of the Funds’ shares or the amount that a Fund will receive as proceeds from such sales. In certain cases these cash payments could be significant to the financial intermediaries. These cash payments may also create an incentive for a financial intermediary to recommend or sell shares of the Funds to its customers. Please contact your financial intermediary for details about any payments they or their firm may receive in connection with the sale of shares of the Funds or the provision of services to the Funds. Also, please see the Funds’ SAI for more information about these types of payments.

A discussion regarding the basis for the Board’s approval of the investment advisory agreement and investment sub-advisory agreements of each Fund is available in each Fund’s most recent annual report to shareholders for the twelve-month period ended August 31.

Other Information

    

shareholder has elected to have such dividends and distributions paid in cash. See “Pricing of Shares – Timing of Orders” for a description of the Fund’s business days.

Capital Gains Distributions

Liquid Assets Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

STIC Prime Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Treasury Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Government & Agency Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Government TaxAdvantage Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Tax-Free Cash Reserve Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

22                                   Short-Term Investment Trust

The financial highlights table is intended to help you understand each Fund’s financial performance of the Cash Management Class shares. Certain information reflects financial results for a single Fund share.

The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in a Fund (assuming reinvestment of all dividends and distributions).

This information has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report, along with a Fund’s financial statements, is included in each Fund’s annual report, which is available upon request.

Cash Management Class

	Net asset value, beginning of period	Net investment income (a)	Net gains (losses) on securities (both realized and unrealized)	Total from investment operations	Dividends from net investment income	Distributions from net realized gains	Total distributions	Net asset value, end of period	Total return (b)	Net assets, end of period (000’s omitted)	Ratio of expenses to average net assets with fee waivers and/or expenses absorbed	Ratio of expenses to average net assets without fee waivers and/or expenses absorbed	Ratio of net investment income to average net assets
Liquid Assets Portfolio
Year ended 08/31/15	$1.00	$0.00	$ 0.00	$0.00	$(0.00)	$ —	$(0.00)	$1.00	0.02%	$ 458,001	0.20% (c)	0.27% (c)	0.02% (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	684,446	0.19	0.27	0.02
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.05	744,301	0.21	0.27	0.05
Year ended 08/31/12	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.07	785,901	0.22	0.28	0.07
Year ended 08/31/11	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.08	1,567,468	0.21	0.27	0.08
STIC Prime Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.04	483,595	0.07 (c)	0.29 (c)	0.10 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.08	453,771	0.06	0.29	0.08
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.06	451,190	0.11	0.29	0.08
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.07	358,387	0.15	0.30	0.05
Year ended 08/31/11	1.00	0.00	—	0.00	(0.00)	—	(0.00)	1.00	0.04	451,634	0.20	0.29	0.04
Treasury Portfolio
Year ended 08/31/15	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.01	5,304,331	0.06 (c)	0.27 (c)	0.02 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.01	7,597,812	0.04	0.27	0.02
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.02	6,226,819	0.09	0.28	0.02
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	4,929,501	0.08	0.28	0.02
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	6,379,706	0.12	0.28	0.02
Government & Agency Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	222,853	0.08 (c)	0.23 (c)	0.02 (c)
Year ended 08/31/14	1.00	0.00	—	0.00	(0.00)	—	(0.00)	1.00	0.02	469,858	0.06	0.23	0.02
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	635,001	0.11	0.24	0.02
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.02	673,598	0.10	0.23	0.03
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	1,674,548	0.14	0.23	0.02
Government TaxAdvantage Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	45,026	0.00 (c)	0.43 (c)	0.08 (c)
Year ended 08/31/14	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.04	48,104	0.02	0.39	0.03
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.03	31,553	0.06	0.30	0.03
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	33,449	0.07	0.32	0.02
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.03	39,369	0.11	0.36	0.03
Tax-Free Cash Reserve Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.01	51,018	0.03 (c)	0.41 (c)	0.04 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.05	60,722	0.04	0.40	0.04
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.06	107,926	0.10	0.40	0.06
Year ended 08/31/12	1.00	0.00	—	0.00	(0.00)	—	(0.00)	1.00	0.06	76,483	0.13	0.40	0.06
Year ended 08/31/11	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.02	106,336	0.26	0.39	0.03

Hypothetical Investment and Expense Information

    

In connection with the final settlement reached between Invesco and certain of its affiliates with certain regulators, including the New York Attorney General’s Office, the SEC and the Colorado Attorney General’s Office (the settlement) arising out of certain market timing and unfair pricing allegations made against Invesco and certain of its affiliates, Invesco and certain of its affiliates agreed, among other things, to disclose certain hypothetical information regarding investment and expense information to Fund shareholders. The chart below is intended to reflect the annual and cumulative impact of the Fund’s expenses, including investment advisory

fees and other Fund costs, on the Fund’s returns over a 10-year period. The example reflects the following:

■	You invest $10,000 in the Fund and hold it for the entire 10-year period;
■	Your investment has a 5% return before expenses each year; and
■	Each Portfolio’s current annual expense ratio includes any applicable contractual fee waiver or expense reimbursement for the period committed.

There is no assurance that the annual expense ratio will be the expense ratio for the Funds’ classes for any of the years shown. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios; your actual returns and expenses are likely to differ (higher or lower) from those shown below.

Liquid Assets Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.22%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.78%	9.74%	14.93%	20.36%	26.06%	32.02%	38.26%	44.80%	51.65%	58.82%
End of Year Balance	$10,478.00	$10,973.61	$11,492.66	$12,036.26	$12,605.58	$13,201.82	$13,826.27	$14,480.25	$15,165.17	$15,882.48
Estimated Annual Expenses	$ 22.53	$ 28.96	$ 30.33	$ 31.76	$ 33.27	$ 34.84	$ 36.49	$ 38.21	$ 40.02	$ 41.91

    

STIC Prime Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.22%	0.29%	0.29%	0.29%	0.29%	0.29%	0.29%	0.29%	0.29%	0.29%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.78%	9.72%	14.88%	20.29%	25.96%	31.89%	38.10%	44.61%	51.42%	58.55%
End of Year Balance	$10,478.00	$10,971.51	$11,488.27	$12,029.37	$12,595.95	$13,189.22	$13,810.43	$14,460.91	$15,142.01	$15,855.20
Estimated Annual Expenses	$ 22.53	$ 31.10	$ 32.57	$ 34.10	$ 35.71	$ 37.39	$ 39.15	$ 40.99	$ 42.92	$ 44.95

    

Treasury Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.22%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%	0.27%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.78%	9.74%	14.93%	20.36%	26.06%	32.02%	38.26%	44.80%	51.65%	58.82%
End of Year Balance	$10,478.00	$10,973.61	$11,492.66	$12,036.26	$12,605.58	$13,201.82	$13,826.27	$14,480.25	$15,165.17	$15,882.48
Estimated Annual Expenses	$ 22.53	$ 28.96	$ 30.33	$ 31.76	$ 33.27	$ 34.84	$ 36.49	$ 38.21	$ 40.02	$ 41.91

    

Government & Agency Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.21%	0.23%	0.23%	0.23%	0.23%	0.23%	0.23%	0.23%	0.23%	0.23%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.79%	9.79%	15.03%	20.51%	26.26%	32.28%	38.59%	45.20%	52.13%	59.39%
End of Year Balance	$10,479.00	$10,978.85	$11,502.54	$12,051.21	$12,626.05	$13,228.32	$13,859.31	$14,520.40	$15,213.02	$15,938.68
Estimated Annual Expenses	$ 21.50	$ 24.68	$ 25.85	$ 27.09	$ 28.38	$ 29.73	$ 31.15	$ 32.64	$ 34.19	$ 35.82

    

Government TaxAdvantage Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.22%	0.43%	0.43%	0.43%	0.43%	0.43%	0.43%	0.43%	0.43%	0.43%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.78%	9.57%	14.58%	19.81%	25.29%	31.01%	37.00%	43.26%	49.81%	56.65%
End of Year Balance	$10,478.00	$10,956.84	$11,457.57	$11,981.18	$12,528.72	$13,101.29	$13,700.01	$14,326.11	$14,980.81	$15,665.43
Estimated Annual Expenses	$ 22.53	$ 46.08	$ 48.19	$ 50.39	$ 52.70	$ 55.10	$ 57.62	$ 60.26	$ 63.01	$ 65.89

    

Tax-Free Cash Reserve Portfolio — Cash Management Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.33%	0.41%	0.41%	0.41%	0.41%	0.41%	0.41%	0.41%	0.41%	0.41%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.67%	9.47%	14.50%	19.75%	25.25%	31.00%	37.01%	43.30%	49.88%	56.76%
End of Year Balance	$10,467.00	$10,947.44	$11,449.92	$11,975.47	$12,525.15	$13,100.05	$13,701.35	$14,330.24	$14,987.99	$15,675.94
Estimated Annual Expenses	$ 33.77	$ 43.90	$ 45.91	$ 48.02	$ 50.23	$ 52.53	$ 54.94	$ 57.46	$ 60.10	$ 62.86

Each Fund consists of seven classes of shares that share a common investment objective and portfolio of investments. The seven classes differ only with respect to distribution arrangements and any applicable associated Rule 12b-1 fees and expenses.

Distribution and Service (12b-1) Fees

Each Fund has adopted a 12b-1 plan with respect to each class other than the Institutional Class that allows each Fund to pay distribution and service fees to Invesco Distributors, Inc. (the distributor) for the sale and distribution of its shares and fees for services provided to investors. Because each Fund pays these fees out of its 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.

Purchasing Shares

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

How to Purchase Shares

Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio

For Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio, you may purchase shares using one of the options below. Unless a Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 5:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 5:30 p.m. Eastern Time on a business day. If you wish to place an order between 5:00 p.m. and 5:30 p.m. Eastern Time on a business day, you must place such order by telephone; however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If a Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Funds verify and record your identifying information.

Government TaxAdvantage Portfolio

You may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 3:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 3:30 p.m. Eastern Time on a business day. If you wish to place an order between 3:00 p.m. and 3:30 p.m. Eastern Time on a business day, you must place such order by telephone; however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Tax-Free Cash Reserve Portfolio

You may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 3:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 3:30 p.m. Eastern Time on a business day. If you wish to place an order between 3:00 p.m. and 3:30 p.m. Eastern Time on a business day, you must place such order by telephone; or send your request by a pre-arranged Liquidity Link data transmission however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Purchase Options
	Opening An Account	Adding To An Account
Through a Financial Intermediary	Contact your financial intermediary	Same
	The financial intermediary should forward your completed account application to the Funds’ transfer agent,
	Invesco Investment Services, Inc. P.O. Box 219286 Kansas City, MO 64121-9286
	The financial intermediary should call the Funds’ transfer agent at (800) 659-1005 to receive an account number.
	The intermediary should use the following wire instructions:
	The Bank of New York ABA/Routing #: 021000018 DDA: 8900118377 Invesco Investment Services, Inc.
	For Further Credit to Your Account #
	If you do not know your account # or settle on behalf of multiple accounts, please contact the Funds’ transfer agent for assistance.
By Telephone	Open your account as described above.	Call the Funds’ transfer agent at (800) 659-1005 and wire payment for your purchase order in accordance with the wire instructions noted above.
By Liquidity Link	Open your account as described above.	Complete a Liquidity Link Agreement. Mail the application and agreement to the Funds’ transfer agent. Once your request for this option has been processed, you may place your order via Liquidity Link.

Automatic Dividend and Distribution Investment

All of your dividends and distributions may be paid in cash or reinvested in the same Fund at net asset value. Unless you specify otherwise, your dividends and distributions will automatically be reinvested in the same Fund in the form of full and fractional shares at net asset value.

Redeeming Shares

Redemption Fees

Your broker or financial intermediary may charge service fees for handling redemption transactions.

    

    

Payment of Redemption Proceeds

All redemption orders are processed at the net asset value next determined after the Funds’ transfer agent receives a redemption order.

Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio

For Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio, the Funds’ transfer agent will normally wire payment for redemptions received prior to 5:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time, proceeds may not be wired

until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 5:30 p.m. Eastern Time, the redemption will be effected at the net asset value of each Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If a Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Government TaxAdvantage Portfolio

The Funds’ transfer agent will normally wire payment for redemptions received prior to 3:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 3:00 p.m. Eastern Time and 3:30 p.m. Eastern Time, proceeds may not be wired until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 3:30 p.m. Eastern Time, the redemption will be effected at the net asset value of the Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If the Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Tax-Free Cash Reserve Portfolio

The Funds’ transfer agent will normally wire payment for redemptions received prior to 3:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 12:30 p.m. Eastern Time and 3:30 p.m. Eastern Time, proceeds may not be wired until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 3:30 p.m. Eastern Time, the redemption will be effected at the net asset value of the Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If the Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the

dividends payable up to the date of redemption accompany the proceeds of the redemption.

Redemptions by Telephone

If you redeem by telephone, the Funds’ transfer agent will transmit the amount of the redemption proceeds electronically to your pre-authorized bank account. The Funds’ transfer agent uses reasonable procedures to confirm that instructions communicated by telephone are genuine, and the Funds and the Funds’ transfer agent are not liable for telephone instructions that are reasonably believed to be genuine.

Redemptions by Liquidity Link

If you redeem via Liquidity Link, the Funds’ transfer agent will transmit your redemption proceeds electronically to your pre-authorized bank account. The Funds and the Funds’ transfer agent are not liable for Liquidity Link instructions that are not genuine.

Suspension of Redemptions

In the event that the Fund, at the end of a business day, has invested less than 10% of its total assets in weekly liquid assets or the Fund’s price per share as computed for the purpose of distribution, redemption and repurchase, rounded to the nearest 1%, has deviated from the stable price established by the Fund’s Board of Trustees (“Board”) or the Board, including a majority of trustees who are not interested persons as defined in the 1940 Act, determines that such a deviation is likely to occur, and the board of trustees, including a majority of trustees who are not interested persons of the Fund, irrevocably has approved the liquidation of the Fund, the Fund’s board of trustees has the authority to suspend redemptions of Fund shares.

Redemptions by the Funds

If a Fund determines that you have not provided a correct Social Security or other tax identification number on your account application, or the Fund is not able to verify your identity as required by law, the Fund may, at its discretion, redeem the account and distribute the proceeds to you.

Rights Reserved by the Funds

Each Fund and its agent reserve the right at any time to:

■	reject or cancel all or any part of any purchase order;
■	modify any terms or conditions related to the purchase or redemption of shares of any Fund; or
■	suspend, change or withdraw all or any part of the offering made by this prospectus.

If a Fund closes early on a business day, as described below under “Pricing of Shares—Timing of Orders”, the Fund will calculate its net asset value as of the time of such closing.

Each Fund values portfolio securities on the basis of amortized cost, which approximates market value. This method of valuation is designed to enable a Fund to price its shares at $1.00 per share. The Funds cannot guarantee their net asset value will always remain at $1.00 per share.

Timing of Orders

Each Fund opens for business at 8:30 a.m. Eastern Time. Each Fund prices purchase and redemption orders on each business day at the net asset value calculated after the Funds’ transfer agent receives an order in good form.

A business day is any day that (1) both the Federal Reserve Bank of New York and the Fund’s custodian are open for business and (2) the primary trading markets for the Fund’s portfolio instruments are open and the Fund’s management believes there is an adequate market to meet purchase and redemption requests. Each Fund is authorized not to open for trading on a day that is otherwise a business day if the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading; any such day will not be considered a business day. Each Fund also may close early on a business day if the SIFMA recommends that government securities dealers close early.

If the financial intermediary through which you place purchase and redemption orders, in turn, places its orders to the Funds’ transfer agent through the NSCC, the Funds’ transfer agent may not receive those orders until the next business day after the order has been entered into the NSCC.

Each Fund may postpone the right of redemption under unusual circumstances, as allowed by the SEC, such as when the New York Stock Exchange restricts or suspends trading.

Thirty-minutes prior to the Funds’ net asset value determination, Liquid Assets Portfolio, STIC Prime Portfolio, Treasury Portfolio, Government & Agency Portfolio, and Government TaxAdvantage Portfolio may, in their discretion, limit or refuse to accept purchase orders and may not provide same-day payment of redemption proceeds.

During the period between 12:30 p.m. Eastern Time and 3:30 p.m. Eastern Time, Tax-Free Cash Reserve Portfolio may, in its discretion, refuse to accept purchase orders and may not provide same-day settlement of redemption orders. On days that a Fund closes early, the Fund may, in its discretion, refuse to accept purchase orders and may not provide same day settlement of redemption orders for such purchases and redemption orders received by the Funds’ transfer agent (i) if the Fund closes after 12:30 p.m. Eastern Time, between 12:30 p.m. Eastern Time and the time the Fund closes, and (ii) if the Fund closes on or before 12:30 p.m. Eastern Time, during the thirty minute period prior to the Fund’s net asset value determination.

Frequent Purchases and Redemptions of Fund Shares

The Board of the Funds has not adopted any policies and procedures that would limit frequent purchases and redemptions of the Funds’ shares. The Board does not believe that it is appropriate to adopt any such policies and procedures for the following reasons:

■	Each Fund is offered to investors as a cash management vehicle; therefore, investors should be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of a money market fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of a Fund will be detrimental to the continuing operations of the Fund.
■	Each Fund’s portfolio securities are valued on the basis of amortized cost, and the Funds seek to maintain a constant net asset value. As a result, the Funds are not subject to price arbitrage opportunities.

■	Because each Fund seeks to maintain a constant net asset value, investors are more likely to expect to receive the amount they originally invested in the Funds upon redemption than other mutual funds. Imposition of redemption fees would run contrary to investor expectations.

The Board considered the risks of not having a specific policy that limits frequent purchases and redemptions, and it determined that those risks are minimal, especially in light of the reasons for not having such a policy as described above. Nonetheless, to the extent that each Fund must maintain additional cash and/or securities with shorter-term durations than may otherwise be required, the Fund’s yield could be negatively impacted. Moreover, excessive trading activity in the Fund’s shares may cause the Fund to incur increased brokerage and administrative costs.

Each Fund and its agent reserve the right at any time to reject or cancel any part of any purchase order. This could occur if each Fund determines that such purchase may disrupt the Fund’s operation or performance.

Taxes

A Fund intends to qualify each year as a regulated investment company and, as such, is not subject to entity-level tax on the income and gain it distributes to shareholders. If you are a taxable investor, dividends and distributions you receive from a Fund generally are taxable to you whether you reinvest distributions in additional Fund shares or take them in cash. Every year, you will be sent information showing the amount of dividends and distributions you received from a Fund during the prior calendar year. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

■	A Fund earns income generally in the form of interest on its investments. This income, less expenses incurred in the operation of a Fund, constitutes the Fund’s net investment income from which dividends may be paid to you. If you are a taxable investor, distributions of net investment income generally are taxable to you as ordinary income.
■	Distributions of net short-term capital gains are taxable to you as ordinary income. Because a Fund is a money market fund, it does not anticipate realizing any long-term capital gains.
■	None of the dividends paid by a Fund will qualify as qualified dividend income subject to reduced rates of taxation in the case of non-corporate shareholders.
■	Distributions declared to shareholders with a record date in December—if paid to you by the end of January—are taxable for federal income tax purposes as if received in December.
■	Any capital gains realized from redemptions of Fund shares will be subject to federal income tax. For tax purposes, an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Because a Fund expects to maintain a stable net asset value of $1.00 per share, investors should not have any gain or loss on sale or exchange of Fund shares.
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the Internal Revenue Service (IRS) instructs it to do so. When withholding is required, the amount will be 28% of any distributions or proceeds paid.
■	You will not be required to include the portion of dividends paid by a Fund derived from interest on U.S. government obligations in your gross income for purposes of personal and, in some cases, corporate income taxes in many state and local tax jurisdictions. The percentage of dividends that constitutes dividends derived from interest on federal obligations will be

	determined annually. This percentage may differ from the actual percentage of interest received by the Fund on federal obligations for the particular days on which you hold shares.
■	An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.
■	Fund distributions generally are subject to state and local income taxes.
■	Foreign investors should be aware that U.S. withholding, special certification requirements to avoid U.S. backup withholding and claim any treaty benefits and estate taxes may apply to an investment in a Fund.

■

Under the Foreign Account Tax Compliance Act (FATCA), a Fund will be required to withhold a 30% tax on the following payments or distributions made by the Fund to certain foreign entities, referred to as foreign financial institutions or non-financial foreign entities, that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts: (a) income dividends and (b) after December 31, 2018, certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares. A Fund may disclose the information that it receives from its shareholders to the IRS, non-U.S. taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.

The above discussion concerning the taxability of Fund dividends and distributions and of redemptions and exchanges of Fund shares is inapplicable to investors that generally are exempt from federal income tax, such as retirement plans that are qualified under Section 401 and 403 of the Code and individual retirement accounts (IRAs) and Roth IRAs.

Tax-Free Cash Reserve Portfolio

■	You will not be required to include the “exempt-interest” portion of dividends paid by the Fund in either your gross income for federal income tax purposes or your net investment income subject to the additional 3.8% Medicare tax. You will be required to report the receipt of exempt-interest dividends and other tax-exempt interest on your federal income tax returns. The percentage of dividends that constitutes exempt-interest dividends will be determined annually. This percentage may differ from the actual percentage of exempt interest received by the Fund for the particular days in which you hold shares.
■	A Fund may invest in municipal securities the interest on which constitutes an item of tax preference and could give rise to a federal alternative minimum tax liability for you, unless such municipal securities were issued in 2009 or 2010.
■	Exempt-interest dividends from interest earned on municipal securities of a state, or its political subdivisions, generally are exempt from that state’s personal income tax. Most states, however, do not grant tax-free treatment to interest from municipal securities of other states.
■	A Fund may invest a portion of its assets in securities that pay income that is not tax-exempt. To the extent that dividends paid by a Fund are derived from taxable investments or realized capital gains, they will be taxable as ordinary income or long-term capital gains.
■	A Fund may distribute to you any market discount and net short-term capital gains from the sale of its portfolio securities. If you are a taxable investor, Fund distributions from this income are taxable to you as ordinary income, and generally will neither qualify for the dividends

	received deduction in the case of corporate shareholders nor as qualified dividend income subject to reduced rates of taxation in the case of noncorporate shareholders.
■	Exempt-interest dividends from a Fund are taken into account when determining the taxable portion of your social security or railroad retirement benefits, may be subject to state and local income taxes, may affect the deductibility of interest on certain indebtedness, and may have other collateral federal income tax consequences for you.
■	There are risks that: (a) a security issued as tax-exempt may be reclassified by the IRS or a state tax authority as taxable and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability. In addition, such reclassifications or actions could cause the value of a security, and therefore, the value of the Fund’s shares, to decline.

This discussion of “Taxes” is for general information only and not tax advice. All investors should consult their own tax advisers as to the federal, state, local and foreign tax provisions applicable to them.

Important Notice Regarding Delivery of Security Holder Documents

To reduce Fund expenses, only one copy of most shareholder documents may be mailed to shareholders with multiple accounts at the same address (Householding). Mailing of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please contact the Funds’ transfer agent at 800-959-4246 or contact your financial institution. The Funds’ transfer agent will begin sending you individual copies for each account within thirty days after receiving your request.

        

Obtaining Additional Information

More information may be obtained free of charge upon request. The SAI, a current version of which is on file with the SEC, contains more details about each Fund and is incorporated by reference into this prospectus (is legally a part of this prospectus). Annual and semi-annual reports to shareholders contain additional information about each Fund’s investments. Each Fund’s annual report also discusses the market conditions and investment strategies that significantly affected each Fund’s performance during its last fiscal year. Each Fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q.

If you have questions about an Invesco Fund or your account, or you wish to obtain a free copy of the Fund’s current SAI, annual or semi-annual reports or Form N-Q, please contact us.

You can also review and obtain copies of each Fund’s SAI, annual or semi-annual reports, Forms N-Q and other information at the SEC’s Public Reference Room in Washington, DC; on the EDGAR database on the SEC’s Web site (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC’s Public Reference Section, Washington, DC 20549-1520 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-551-8090 for information about the Public Reference Room.

    

invesco.com/us

CM-STIT-PRO-3

Prospectus

December 18, 2015

Liquid Assets Portfolio  (LPCXX)

STIC Prime Portfolio  (SSCXX)

Treasury Portfolio  (TYCXX)

Government & Agency Portfolio  (AGCXX)

Government TaxAdvantage Portfolio  (TACXX)

Tax-Free Cash Reserve Portfolio  (TFOXX)

Corporate Classes

Liquid Assets Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

STIC Prime Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Treasury Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Government & Agency Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Government TaxAdvantage Portfolio’s investment objective is to provide current income consistent with preservation of capital and liquidity.

Tax-Free Cash Reserve Portfolio’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity.

As with all other mutual fund securities, the U.S. Securities and Exchange Commission (SEC) has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

You could lose money by investing in each Fund. Although each Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in each Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Each Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. Investments in each Fund are not guaranteed by a bank and investment is not a bank deposit.

Table of Contents

Fund Summaries	1
Liquid Assets Portfolio	1
STIC Prime Portfolio	3
Treasury Portfolio	5
Government & Agency Portfolio	7
Government TaxAdvantage Portfolio	8
Tax-Free Cash Reserve Portfolio	10
Investment Objective(s), Strategies, Risks and Portfolio Holdings	12
Liquid Assets Portfolio	12
STIC Prime Portfolio	14
Treasury Portfolio	15
Government & Agency Portfolio	17
Government TaxAdvantage Portfolio	18
Tax-Free Cash Reserve Portfolio	19
Fund Management	21
The Adviser(s)	21
Adviser Compensation	21
Other Information	21
Dividends and Distributions	21
Financial Highlights	22
Hypothetical Investment and Expense Information	23
Shareholder Account Information	A-1
Distribution and Service (12b-1) Fees	A-1
Purchasing Shares	A-1
Redeeming Shares	A-1
Pricing of Shares	A-3
Frequent Purchases and Redemptions of Fund Shares	A-3
Taxes	A-4
Important Notice Regarding Delivery of Security Holder Documents	A-5
Obtaining Additional Information Back Cover

                                   Short-Term Investment Trust

Fund Summaries

Liquid Assets Portfolio

rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In

addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Corporate Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

STIC Prime Portfolio

in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Corporate	$17	$66	$119	$275

Principal Investment Strategies of the Fund

The Fund invests in high-quality U.S. dollar denominated obligations with maturities of 60 days or less, including: (i) securities issued by the U.S. Government or its agencies; (ii) certificates of deposit and time deposits from U.S. or foreign banks; (iii) repurchase agreements; (iv) commercial paper; and (v) municipal securities.

The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in repurchase agreement transactions that are collateralized by nongovernment securities such as equity securities and fixed income securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 60 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 60 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall

condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high

redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost 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. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Corporate	$17	$61	$110	$252

Principal Investment Strategies of the Fund

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in direct obligations of the U.S. Treasury including bills, notes and bonds, and repurchase agreements secured by those obligations. The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7, that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities

that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Corporate Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Government & Agency Portfolio

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single

holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Corporate Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a

401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Government TaxAdvantage Portfolio

Principal Investment Strategies of the Fund

The Fund invests at least 99.5% of its total assets in cash and Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. At the present time, the Fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury and Agency Securities.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund also seeks to distribute dividends that are exempt from state and local taxation in many states.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7, that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become

illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

Average Annual Total Returns (for the periods ended December 31, 2014)
	1 Year	5 Years	Since Inception
Corporate Class: Inception (2/23/2006)	0.03%	0.03%	1.30%

Management of the Fund

Investment Adviser: Invesco Advisers, Inc.

Purchase and Sale of Fund Shares

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Corporate Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account, in which case your distributions generally will be taxed when withdrawn from the tax-deferred 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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

Tax-Free Cash Reserve Portfolio

1

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees and/or reimburse expenses to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed in the SAI) of Corporate Class shares to 0.28% of the Fund's average daily net assets. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2016. The fee waiver agreement cannot be terminated during its term.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost 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. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter. 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
Corporate	$29	$103	$185	$425

Principal Investment Strategies of the Fund

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in debt securities that (i) pay interest that is excluded from gross income for federal income tax purposes, and (ii) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund's direct investments that are counted toward the 80% investment requirement.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund invests primarily in high quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies and instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities

maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations,

decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could

absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's Web site at www.invesco.com/us.

You may purchase or redeem shares of a Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link ^SM .

The minimum investments for Corporate Class fund accounts are as follows:

Initial Investments Per Fund Account*	$1 Million
Additional Investments Per Fund Account	No minimum

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions primarily are exempt from regular federal income tax. A portion of these distributions, however, may be subject to the federal alternative minimum tax and state and local taxes. The Fund may also make distributions that are taxable to you as ordinary income.

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), the Fund and the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s Web site for more information.

investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain

restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or

otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

STIC Prime Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests in high-quality U.S. dollar denominated obligations with maturities of 60 days or less, including: (i) securities issued by the U.S. Government or its agencies; (ii) certificates of deposit and time deposits from U.S. or foreign banks; (iii) repurchase agreements; (iv) commercial paper; and (v) municipal securities.

The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in repurchase agreement transactions that are collateralized by nongovernment securities such as equity securities and fixed income securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 60 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 60 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund's investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives

and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Treasury Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in direct obligations of the U.S. Treasury including bills, notes and bonds, and repurchase agreements secured by those obligations. The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. The Fund considers repurchase agreements with the Federal Reserve Bank of New York to be U.S. Government securities for purposes of the Fund’s investment policies.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not

traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Government & Agency Portfolio

The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Government TaxAdvantage Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests at least 99.5% of its total assets in cash and Government Securities. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing. At the present time, the Fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury and Agency Securities.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund also seeks to distribute dividends that are exempt from state and local taxation in many states.

The Fund is a Government Money Market Fund, as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the

Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in

value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Tax-Free Cash Reserve Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in debt securities that (i) pay interest that is excluded from gross income for federal income tax purposes, and (ii) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund's direct investments that are counted toward the 80% investment requirement.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund invests primarily in high quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies and instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities. Synthetic municipal securities include variable rate instruments, which are created when fixed rate bonds are coupled with a third party demand feature.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer

and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Liquidity Risk. The Fund may be unable to sell illiquid investments at the time or price it desires and, as a result, could lose its entire investment in such investments. An investment may be illiquid due to a lack of trading volume in the investment or if the investment is privately placed and not traded in any public market or is otherwise restricted from trading. Certain restricted securities require special registration and pose valuation difficulties. Liquid securities can become illiquid during periods of market stress. If a significant amount of the Fund’s securities become illiquid, the Fund may not be able to timely pay redemption proceeds and may need to sell securities at significantly reduced prices.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the investment manager in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as

changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. To the extent the Fund holds cash or cash equivalents rather than securities in which it primarily invests or uses to manage risk, the Fund may not achieve its investment objectives and may underperform. Furthermore, amendments to money market fund regulations could impact the Fund’s operations and possibly negatively impact its return.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk . The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Portfolio Holdings

Information concerning the Funds' portfolio holdings as well as their dollar-weighted average portfolio maturity and dollar-weighted average life to maturity as of the last business day of the preceding month will be posted on their Web site no later than five business days after the end of the month and remain posted on the Web site for six months thereafter.

A description of Fund policies and procedures with respect to the disclosure of Fund portfolio holdings is available in the SAI, which is available at www.invesco.com/us.

    

STIC Prime Portfolio expects, based on its investment objective and strategies, that its dividends and distributions, if any, will consist primarily of ordinary income.

Treasury Portfolio expects, based on its investment objective and strategies, that its dividends and distributions, if any, will consist primarily of ordinary income.

Government & Agency Portfolio expects, based on its investment objective and strategies, that its dividends and distributions, if any, will consist primarily of ordinary income.

Government TaxAdvantage Portfolio expects, based on its investment objective and strategies, that its dividends and distributions, if any, will consist primarily of ordinary income.

Tax-Free Cash Reserve Portfolio expects, based on its investment objective and strategies, that its dividends and distributions, if any, will consist primarily of tax-exempt income.

Dividends

Liquid Assets Portfolio generally declares dividends, if any, daily and pays them monthly.

STIC Prime Portfolio generally declares dividends, if any, daily and pays them monthly.

Treasury Portfolio generally declares dividends, if any, daily and pays them monthly.

Government & Agency Portfolio generally declares dividends, if any, daily and pays them monthly.

Government TaxAdvantage Portfolio generally declares dividends, if any, daily and pays them monthly.

Tax-Free Cash Reserve Portfolio generally declares dividends, if any, daily and pays them monthly.

Dividends are paid on settled shares of the Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio as of 5:30 p.m. Eastern Time, and of the Government TaxAdvantage Portfolio and Tax-Free Cash Reserve Portfolio as of 3:30 p.m. Eastern Time (“Settlement Time”). If a Fund closes early on a business day, such Fund will pay dividends on settled shares at such earlier closing time. Generally, shareholders whose purchase orders have been accepted by the Funds prior to the respective Fund’s Settlement Time, or an earlier close time on any day that a Fund closes early, are eligible to receive dividends on that business day. The dividend declared on any day preceding a non-business day or days of a Fund will include the net income accrued on such non-business day or days. Dividends and distributions are reinvested in the form of additional full and fractional shares at net asset value unless the shareholder has elected to have such dividends and distributions paid in cash. See “Pricing of Shares – Timing of Orders” for a description of the Fund’s business days.

Capital Gains Distributions

Liquid Assets Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

STIC Prime Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Treasury Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Government & Agency Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Government TaxAdvantage Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Tax-Free Cash Reserve Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

The financial highlights table is intended to help you understand each Fund’s financial performance of the Corporate Class shares. Certain information reflects financial results for a single Fund share.

The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in a Fund (assuming reinvestment of all dividends and distributions).

This information has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report, along with a Fund’s financial statements, is included in each Fund’s annual report, which is available upon request.

Corporate Class

	Net asset value, beginning of period	Net investment income (a)	Net gains (losses) on securities (both realized and unrealized)	Total from investment operations	Dividends from net investment income	Distributions from net realized gains	Total distributions	Net asset value, end of period	Total return (b)	Net assets, end of period (000’s omitted)	Ratio of expenses to average net assets with fee waivers and/or expenses absorbed	Ratio of expenses to average net assets without fee waivers and/or expenses absorbed	Ratio of net investment income to average net assets
Liquid Assets Portfolio
Year ended 08/31/15	$1.00	$0.00	$ 0.00	$0.00	$(0.00)	$ —	$(0.00)	$1.00	0.05%	$1,054,301	0.17% (c)	0.20% (c)	0.05% (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.04	670,700	0.17	0.20	0.04
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.09	1,496,576	0.17	0.20	0.09
Year ended 08/31/12	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.12	1,937,039	0.17	0.21	0.12
Year ended 08/31/11	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.12	1,858,584	0.17	0.20	0.12
STIC Prime Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.04	77,043	0.07 (c)	0.22 (c)	0.10 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.08	59,554	0.06	0.22	0.08
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.06	68,522	0.11	0.22	0.08
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.08	96,655	0.14	0.23	0.06
Year ended 08/31/11	1.00	0.00	—	0.00	(0.00)	—	(0.00)	1.00	0.08	102,632	0.16	0.22	0.08
Treasury Portfolio
Year ended 08/31/15	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.01	1,770,653	0.06 (c)	0.20 (c)	0.02 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.01	1,423,728	0.04	0.20	0.02
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.02	2,837,170	0.09	0.21	0.02
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	2,002,611	0.08	0.21	0.02
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	1,856,324	0.11	0.21	0.02
Government & Agency Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	631,189	0.08 (c)	0.16 (c)	0.02 (c)
Year ended 08/31/14	1.00	0.00	—	0.00	(0.00)	—	(0.00)	1.00	0.02	659,821	0.06	0.16	0.02
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	835,545	0.11	0.17	0.02
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.02	505,026	0.10	0.16	0.03
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.04	1,344,281	0.13	0.16	0.04
Government TaxAdvantage Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.02	28,019	0.00 (c)	0.36 (c)	0.08 (c)
Year ended 08/31/14	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.04	50,514	0.02	0.32	0.03
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.03	10	0.06	0.23	0.03
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	(0.00)	(0.00)	1.00	0.03	10	0.07	0.25	0.02
Year ended 08/31/11	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.03	50,842	0.10	0.29	0.04
Tax-Free Cash Reserve Portfolio
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.01	26,479	0.03 (c)	0.34 (c)	0.04 (c)
Year ended 08/31/14	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.05	31,522	0.04	0.33	0.04
Year ended 08/31/13	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.06	31,450	0.10	0.33	0.06
Year ended 08/31/12	1.00	0.00	0.00	0.00	(0.00)	—	(0.00)	1.00	0.06	27,320	0.13	0.33	0.06
Year ended 08/31/11	1.00	0.00	(0.00)	0.00	(0.00)	—	(0.00)	1.00	0.04	27,954	0.24	0.32	0.05

Hypothetical Investment and Expense Information

    

In connection with the final settlement reached between Invesco and certain of its affiliates with certain regulators, including the New York Attorney General’s Office, the SEC and the Colorado Attorney General’s Office (the settlement) arising out of certain market timing and unfair pricing allegations made against Invesco and certain of its affiliates, Invesco and certain of its affiliates agreed, among other things, to disclose certain hypothetical information regarding investment and expense information to Fund shareholders. The chart below is intended to reflect the annual and cumulative impact of each Fund’s expenses, including investment advisory fees and other Fund costs, on each Fund’s returns over a 10-year period. The example reflects the following:

■	You invest $10,000 in the Fund and hold it for the entire 10-year period;
■	Your investment has a 5% return before expenses each year; and
■	Liquid Assets Portfolio, STIC Prime Portfolio, Treasury Portfolio, Government TaxAdvantage Portfolio and Tax-Free Cash Reserve Portfolio’s current annual expense ratio includes any applicable contractual fee waiver or expense reimbursement for the period committed.

There is no assurance that the annual expense ratio will be the expense ratio for the Funds’ classes for any of the years shown. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios; your actual returns and expenses are likely to differ (higher or lower) from those shown below.

Liquid Assets Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.17%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.83%	9.86%	15.14%	20.66%	26.45%	32.52%	38.88%	45.55%	52.54%	59.86%
End of Year Balance	$10,483.00	$10,986.18	$11,513.52	$12,066.17	$12,645.35	$13,252.32	$13,888.43	$14,555.08	$15,253.72	$15,985.90
Estimated Annual Expenses	$ 17.41	$ 21.47	$ 22.50	$ 23.58	$ 24.71	$ 25.90	$ 27.14	$ 28.44	$ 29.81	$ 31.24

    

STIC Prime Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.17%	0.22%	0.22%	0.22%	0.22%	0.22%	0.22%	0.22%	0.22%	0.22%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.83%	9.84%	15.09%	20.59%	26.36%	32.40%	38.73%	45.36%	52.30%	59.58%
End of Year Balance	$10,483.00	$10,984.09	$11,509.13	$12,059.26	$12,635.70	$13,239.68	$13,872.54	$14,535.65	$15,230.45	$15,958.47
Estimated Annual Expenses	$ 17.41	$ 23.61	$ 24.74	$ 25.93	$ 27.16	$ 28.46	$ 29.82	$ 31.25	$ 32.74	$ 34.31

    

Treasury Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.17%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.83%	9.86%	15.14%	20.66%	26.45%	32.52%	38.88%	45.55%	52.54%	59.86%
End of Year Balance	$10,483.00	$10,986.18	$11,513.52	$12,066.17	$12,645.35	$13,252.32	$13,888.43	$14,555.08	$15,253.72	$15,985.90
Estimated Annual Expenses	$ 17.41	$ 21.47	$ 22.50	$ 23.58	$ 24.71	$ 25.90	$ 27.14	$ 28.44	$ 29.81	$ 31.24

    

Government & Agency Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.16%	0.16%	0.16%	0.16%	0.16%	0.16%	0.16%	0.16%	0.16%	0.16%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.84%	9.91%	15.23%	20.81%	26.66%	32.79%	39.22%	45.95%	53.02%	60.42%
End of Year Balance	$10,484.00	$10,991.43	$11,523.41	$12,081.14	$12,665.87	$13,278.90	$13,921.60	$14,595.40	$15,301.82	$16,042.43
Estimated Annual Expenses	$ 16.39	$ 17.18	$ 18.01	$ 18.88	$ 19.80	$ 20.76	$ 21.76	$ 22.81	$ 23.92	$ 25.08

    

Government TaxAdvantage Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.17%	0.36%	0.36%	0.36%	0.36%	0.36%	0.36%	0.36%	0.36%	0.36%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.83%	9.69%	14.78%	20.11%	25.68%	31.51%	37.62%	44.00%	50.68%	57.68%
End of Year Balance	$10,483.00	$10,969.41	$11,478.39	$12,010.99	$12,568.30	$13,151.47	$13,761.70	$14,400.24	$15,068.41	$15,767.58
Estimated Annual Expenses	$ 17.41	$ 38.61	$ 40.41	$ 42.28	$ 44.24	$ 46.30	$ 48.44	$ 50.69	$ 53.04	$ 55.50

    

Tax-Free Cash Reserve Portfolio — Corporate Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio 1	0.28%	0.34%	0.34%	0.34%	0.34%	0.34%	0.34%	0.34%	0.34%	0.34%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.72%	9.60%	14.71%	20.05%	25.65%	31.50%	37.63%	44.04%	50.76%	57.78%
End of Year Balance	$10,472.00	$10,960.00	$11,470.73	$12,005.27	$12,564.71	$13,150.23	$13,763.03	$14,404.39	$15,075.63	$15,778.15
Estimated Annual Expenses	$ 28.66	$ 36.43	$ 38.13	$ 39.91	$ 41.77	$ 43.72	$ 45.75	$ 47.88	$ 50.12	$ 52.45

Each Fund consists of seven classes of shares that share a common investment objective and portfolio of investments. The seven classes differ only with respect to distribution arrangements and any applicable associated Rule 12b-1 fees and expenses.

Distribution and Service (12b-1) Fees

Each Fund has adopted a 12b-1 plan with respect to each class other than the Institutional Class that allows each Fund to pay distribution and service fees to Invesco Distributors, Inc. (the distributor) for the sale and distribution of its shares and fees for services provided to investors. Because each Fund pays these fees out of its 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.

Purchasing Shares

Minimum Investments Per Fund Account

The minimum investments for Corporate Class accounts are as follows:

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

How to Purchase Shares

Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio

For Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio, you may purchase shares using one of the options below. Unless a Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 5:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 5:30 p.m. Eastern Time on a business day. If you wish to place an order between 5:00 p.m. and 5:30 p.m. Eastern Time on a business day, you must place such order by telephone; however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If a Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Funds verify and record your identifying information.

Government TaxAdvantage Portfolio

You may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 3:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 3:30 p.m. Eastern Time on a business day. If you wish to place an order between 3:00 p.m. and 3:30 p.m. Eastern Time on a business day, you must place such order by telephone; however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Tax-Free Cash Reserve Portfolio

You may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Funds’ transfer agent will generally accept any purchase order placed until 3:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 3:30 p.m. Eastern Time on a business day. If you wish to place an order between 3:00 p.m. and 3:30 p.m. Eastern Time on a business day, you must place such order by telephone; or send your request by a pre-arranged Liquidity Link data transmission however, the Funds’ transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Funds’ transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Purchase Options
	Opening An Account	Adding To An Account
Through a Financial Intermediary	Contact your financial intermediary	Same
	The financial intermediary should forward your completed account application to the Funds’ transfer agent,
	Invesco Investment Services, Inc. P.O. Box 219286 Kansas City, MO 64121-9286
	The financial intermediary should call the Funds’ transfer agent at (800) 659-1005 to receive an account number.
	The intermediary should use the following wire instructions:
	The Bank of New York ABA/Routing #: 021000018 DDA: 8900118377 Invesco Investment Services, Inc.
	For Further Credit to Your Account #
	If you do not know your account # or settle on behalf of multiple accounts, please contact the Funds’ transfer agent for assistance.
By Telephone	Open your account as described above.	Call the Funds’ transfer agent at (800) 659-1005 and wire payment for your purchase order in accordance with the wire instructions noted above.
By Liquidity Link	Open your account as described above.	Complete a Liquidity Link Agreement. Mail the application and agreement to the Funds’ transfer agent. Once your request for this option has been processed, you may place your order via Liquidity Link.

Automatic Dividend and Distribution Investment

All of your dividends and distributions may be paid in cash or reinvested in the same Fund at net asset value. Unless you specify otherwise, your dividends and distributions will automatically be reinvested in the same Fund in the form of full and fractional shares at net asset value.

Redeeming Shares

Redemption Fees

Your broker or financial intermediary may charge service fees for handling redemption transactions.

    

    

Payment of Redemption Proceeds

All redemption orders are processed at the net asset value next determined after the Funds’ transfer agent receives a redemption order.

Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio

For Liquid Assets Portfolio, Treasury Portfolio, Government & Agency Portfolio and STIC Prime Portfolio, the Funds’ transfer agent will normally wire payment for redemptions received prior to 5:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time, proceeds may not be wired

until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 5:30 p.m. Eastern Time, the redemption will be effected at the net asset value of each Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If a Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Government TaxAdvantage Portfolio

The Funds’ transfer agent will normally wire payment for redemptions received prior to 3:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 3:00 p.m. Eastern Time and 3:30 p.m. Eastern Time, proceeds may not be wired until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 3:30 p.m. Eastern Time, the redemption will be effected at the net asset value of the Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If the Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Tax-Free Cash Reserve Portfolio

The Funds’ transfer agent will normally wire payment for redemptions received prior to 3:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 12:30 p.m. Eastern Time and 3:30 p.m. Eastern Time, proceeds may not be wired until the next business day. If the Funds’ transfer agent receives a redemption request on a business day after 3:30 p.m. Eastern Time, the redemption will be effected at the net asset value of the Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If the Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the

dividends payable up to the date of redemption accompany the proceeds of the redemption.

Redemptions by Telephone

If you redeem by telephone, the Funds’ transfer agent will transmit the amount of the redemption proceeds electronically to your pre-authorized bank account. The Funds’ transfer agent uses reasonable procedures to confirm that instructions communicated by telephone are genuine, and the Funds and the Funds’ transfer agent are not liable for telephone instructions that are reasonably believed to be genuine.

Redemptions by Liquidity Link

If you redeem via Liquidity Link, the Funds’ transfer agent will transmit your redemption proceeds electronically to your pre-authorized bank account. The Funds and the Funds’ transfer agent are not liable for Liquidity Link instructions that are not genuine.

Suspension of Redemptions

In the event that the Fund, at the end of a business day, has invested less than 10% of its total assets in weekly liquid assets or the Fund’s price per share as computed for the purpose of distribution, redemption and repurchase, rounded to the nearest 1%, has deviated from the stable price established by the Fund’s Board of Trustees (“Board”) or the Board, including a majority of trustees who are not interested persons as defined in the 1940 Act, determines that such a deviation is likely to occur, and the board of trustees, including a majority of trustees who are not interested persons of the Fund, irrevocably has approved the liquidation of the Fund, the Fund’s board of trustees has the authority to suspend redemptions of Fund shares.

Redemptions by the Funds

If a Fund determines that you have not provided a correct Social Security or other tax identification number on your account application, or the Fund is not able to verify your identity as required by law, the Fund may, at its discretion, redeem the account and distribute the proceeds to you.

Rights Reserved by the Funds

Each Fund and its agent reserve the right at any time to:

■	reject or cancel all or any part of any purchase order;
■	modify any terms or conditions related to the purchase or redemption of shares of any Fund; or
■	suspend, change or withdraw all or any part of the offering made by this prospectus.

If a Fund closes early on a business day, as described below under “Pricing of Shares—Timing of Orders”, the Fund will calculate its net asset value as of the time of such closing.

Each Fund values portfolio securities on the basis of amortized cost, which approximates market value. This method of valuation is designed to enable a Fund to price its shares at $1.00 per share. The Funds cannot guarantee their net asset value will always remain at $1.00 per share.

Timing of Orders

Each Fund opens for business at 8:30 a.m. Eastern Time. Each Fund prices purchase and redemption orders on each business day at the net asset value calculated after the Funds’ transfer agent receives an order in good form.

A business day is any day that (1) both the Federal Reserve Bank of New York and the Fund’s custodian are open for business and (2) the primary trading markets for the Fund’s portfolio instruments are open and the Fund’s management believes there is an adequate market to meet purchase and redemption requests. Each Fund is authorized not to open for trading on a day that is otherwise a business day if the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading; any such day will not be considered a business day. Each Fund also may close early on a business day if the SIFMA recommends that government securities dealers close early.

If the financial intermediary through which you place purchase and redemption orders, in turn, places its orders to the Funds’ transfer agent through the NSCC, the Funds’ transfer agent may not receive those orders until the next business day after the order has been entered into the NSCC.

Each Fund may postpone the right of redemption under unusual circumstances, as allowed by the SEC, such as when the New York Stock Exchange restricts or suspends trading.

Thirty-minutes prior to the Funds’ net asset value determination, Liquid Assets Portfolio, STIC Prime Portfolio, Treasury Portfolio, Government & Agency Portfolio, and Government TaxAdvantage Portfolio may, in their discretion, limit or refuse to accept purchase orders and may not provide same-day payment of redemption proceeds.

During the period between 12:30 p.m. Eastern Time and 3:30 p.m. Eastern Time, Tax-Free Cash Reserve Portfolio may, in its discretion, refuse to accept purchase orders and may not provide same-day settlement of redemption orders. On days that a Fund closes early, the Fund may, in its discretion, refuse to accept purchase orders and may not provide same day settlement of redemption orders for such purchases and redemption orders received by the Funds’ transfer agent (i) if the Fund closes after 12:30 p.m. Eastern Time, between 12:30 p.m. Eastern Time and the time the Fund closes, and (ii) if the Fund closes on or before 12:30 p.m. Eastern Time, during the thirty minute period prior to the Fund’s net asset value determination.

Frequent Purchases and Redemptions of Fund Shares

The Board of the Funds has not adopted any policies and procedures that would limit frequent purchases and redemptions of the Funds’ shares. The Board does not believe that it is appropriate to adopt any such policies and procedures for the following reasons:

■	Each Fund is offered to investors as a cash management vehicle; therefore, investors should be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of a money market fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of a Fund will be detrimental to the continuing operations of the Fund.
■	Each Fund’s portfolio securities are valued on the basis of amortized cost, and the Funds seek to maintain a constant net asset value. As a result, the Funds are not subject to price arbitrage opportunities.

■	Because each Fund seeks to maintain a constant net asset value, investors are more likely to expect to receive the amount they originally invested in the Funds upon redemption than other mutual funds. Imposition of redemption fees would run contrary to investor expectations.

The Board considered the risks of not having a specific policy that limits frequent purchases and redemptions, and it determined that those risks are minimal, especially in light of the reasons for not having such a policy as described above. Nonetheless, to the extent that each Fund must maintain additional cash and/or securities with shorter-term durations than may otherwise be required, the Fund’s yield could be negatively impacted. Moreover, excessive trading activity in the Fund’s shares may cause the Fund to incur increased brokerage and administrative costs.

Each Fund and its agent reserve the right at any time to reject or cancel any part of any purchase order. This could occur if each Fund determines that such purchase may disrupt the Fund’s operation or performance.

Taxes

A Fund intends to qualify each year as a regulated investment company and, as such, is not subject to entity-level tax on the income and gain it distributes to shareholders. If you are a taxable investor, dividends and distributions you receive from a Fund generally are taxable to you whether you reinvest distributions in additional Fund shares or take them in cash. Every year, you will be sent information showing the amount of dividends and distributions you received from a Fund during the prior calendar year. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

■	A Fund earns income generally in the form of interest on its investments. This income, less expenses incurred in the operation of a Fund, constitutes the Fund’s net investment income from which dividends may be paid to you. If you are a taxable investor, distributions of net investment income generally are taxable to you as ordinary income.
■	Distributions of net short-term capital gains are taxable to you as ordinary income. Because a Fund is a money market fund, it does not anticipate realizing any long-term capital gains.
■	None of the dividends paid by a Fund will qualify as qualified dividend income subject to reduced rates of taxation in the case of non-corporate shareholders.
■	Distributions declared to shareholders with a record date in December—if paid to you by the end of January—are taxable for federal income tax purposes as if received in December.
■	Any capital gains realized from redemptions of Fund shares will be subject to federal income tax. For tax purposes, an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Because a Fund expects to maintain a stable net asset value of $1.00 per share, investors should not have any gain or loss on sale or exchange of Fund shares.
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the Internal Revenue Service (IRS) instructs it to do so. When withholding is required, the amount will be 28% of any distributions or proceeds paid.
■	You will not be required to include the portion of dividends paid by a Fund derived from interest on U.S. government obligations in your gross income for purposes of personal and, in some cases, corporate income taxes in many state and local tax jurisdictions. The percentage of dividends that constitutes dividends derived from interest on federal obligations will be