Investment Strategies and Risks

Set forth below are detailed descriptions of the various types of securities and investment techniques that Invesco and/or the Sub-Advisers (as defined herein) may use in managing the Funds, as well as the risks associated with those types of securities and investment techniques. The descriptions of the types of securities and investment techniques below supplement the discussion of principal investment strategies and risks contained in each Fund’s Prospectus. Where a particular type of security or investment technique is not discussed in a Fund’s Prospectus, that security or investment technique is not a principal investment strategy.

Unless otherwise indicated, a Fund may invest in all of the following types of investments. Not all of the Funds invest in all of the types of securities or use all of the investment techniques described below, and a Fund might not invest in all of these types of securities or use all of these techniques at any one time. Invesco and/or the Sub-Advisers may invest in other types of securities and may use other investment techniques in managing the Funds, including those described below for Funds not specifically mentioned as investing in the security or using the investment technique, as well as securities and techniques not described. A Fund’s transactions in a particular type of security or use of a particular technique is subject to limitations imposed by a Fund’s investment objective(s), policies and restrictions described in that Fund’s Prospectus and/or this SAI, as well as the federal securities laws.

Any percentage limitations relating to the composition of a Fund’s portfolio identified in the Fund’s prospectus or this SAI apply at the time the Fund acquires an investment. Subsequent changes that

3

result from market fluctuations generally will not require a Fund to sell any portfolio security. However, a Fund may be required to sell its illiquid securities holdings, or reduce its borrowings, if any, in response to fluctuations in the value of such holdings.

The Funds’ investment objectives, policies, strategies and practices described below are non-fundamental and may be changed without approval of the holders of the Funds’ voting securities unless otherwise indicated.

Equity Investments

Each Fund may invest in the Equity Investments described below:

Common Stock. Common stock is issued by a company principally to raise cash for business purposes and represents an equity or ownership interest in the issuing company. Common stockholders are typically entitled to vote on important matters of the issuing company, including the selection of directors, and may receive dividends on their holdings. A Fund participates in the success or failure of any company in which it holds common stock. In the event a company is liquidated or declares bankruptcy, the claims of bondholders, other debt holders, owners of preferred stock and general creditors take precedence over the claims of those who own common stock.

The prices of common stocks change in response to many factors including the historical and prospective earnings of the issuing company, the value of its assets, general economic conditions, interest rates, investor perceptions and market liquidity.

Preferred Stock. Preferred stock, unlike common stock, often offers a specified dividend rate payable from a company’s earnings. Preferred stock also generally has a preference over common stock on the distribution of a company’s assets in the event the company is liquidated or declares bankruptcy; however, the rights of preferred stockholders on the distribution of a company’s assets in the event of a liquidation or bankruptcy are generally subordinate to the rights of the company’s debt holders and general creditors. If interest rates rise, the fixed dividend on preferred stocks may be less attractive, causing the price of preferred stocks to decline.

Some fixed rate preferred stock may have mandatory sinking fund provisions which provide for the stock to be retired or redeemed on a predetermined schedule, as well as call/redemption provisions prior to maturity, which can limit the benefit of any decline in interest rates that might positively affect the price of preferred stocks. Preferred stock dividends may be “cumulative,” requiring all or a portion of prior unpaid dividends to be paid before dividends are paid on the issuer’s common stock. Preferred stock may be “participating,” which means that it may be entitled to a dividend exceeding the stated dividend in certain cases. In some cases an issuer may offer auction rate preferred stock, which means that the interest to be paid is set by auction and will often be reset at stated intervals.

Convertible Securities. Convertible securities are generally bonds, debentures, notes, preferred stocks or other securities or investments that may be converted or exchanged (by the holder or by the issuer) into shares of the underlying common stock (or cash or securities of equivalent value) at a stated exchange ratio or predetermined price (the conversion price). A convertible security is designed to provide current income and also the potential for capital appreciation through the conversion feature, which enables the holder to benefit from increases in the market price of the underlying common stock. A convertible security may be called for redemption or conversion by the issuer after a particular date and under certain circumstances (including a specified price) established upon issue. If a convertible security held by a Fund is called for redemption or conversion, the Fund could be required to tender it for redemption, convert it into the underlying common stock, or sell it to a third party, which may have an adverse effect on the Fund’s ability to achieve its investment objectives. Convertible securities have general characteristics similar to both debt and equity securities.

A convertible security generally entitles the holder to receive interest paid or accrued until the convertible security matures or is redeemed, converted or exchanged. Before conversion, convertible

4

securities have characteristics similar to non-convertible debt obligations and are designed to provide for a stable stream of income with generally higher yields than common stocks. However, there can be no assurance of current income because the issuers of the convertible securities may default on their obligations. Convertible securities rank senior to common stock in a corporation’s capital structure and, therefore, generally entail less risk than the corporation’s common stock. Convertible securities are subordinate in rank to any senior debt obligations of the issuer, and, therefore, an issuer’s convertible securities entail more risk than its debt obligations. Moreover, convertible securities are often rated below investment grade or not rated because they fall below debt obligations and just above common stock in order of preference or priority on an issuer’s balance sheet. To the extent that a Fund invests in convertible securities with credit ratings below investment grade, such securities may have a higher likelihood of default, although this may be somewhat offset by the convertibility feature.

Convertible securities generally offer lower interest or dividend yields than non-convertible debt securities of similar credit quality because of the potential for capital appreciation. The common stock underlying convertible securities may be issued by a different entity than the issuer of the convertible securities.

The value of convertible securities is influenced by both the yield of non-convertible securities of comparable issuers and by the value of the underlying common stock. The value of a convertible security viewed without regard to its conversion feature (i.e., strictly on the basis of its yield) is sometimes referred to as its “investment value.” The investment value of the convertible security typically will fluctuate based on the credit quality of the issuer and will fluctuate inversely with changes in prevailing interest rates. However, at the same time, the convertible security will be influenced by its “conversion value,” which is the market value of the underlying common stock that would be obtained if the convertible security were converted. Conversion value fluctuates directly with the price of the underlying common stock, and will therefore be subject to risks relating to the activities of the issuer and general market and economic conditions. Depending upon the relationship of the conversion price to the market value of the underlying security, a convertible security may trade more like an equity security than a debt instrument.

If, because of a low price of the common stock, the conversion value is substantially below the investment value of the convertible security, the price of the convertible security is governed principally by its investment value. Generally, if the conversion value of a convertible security increases to a point that approximates or exceeds its investment value, the value of the security will be principally influenced by its conversion value. A convertible security will sell at a premium over its conversion value to the extent investors place value on the right to acquire the underlying common stock while holding an income-producing security.

While a Fund uses the same criteria to rate a convertible debt security that it uses to rate a more conventional debt security, a convertible preferred stock is treated like a preferred stock for the Fund’s financial reporting, credit rating and investment limitation purposes.

Contingent Convertible Securities (CoCos) . CoCos are a form of hybrid fixed income security typically issued by non-U.S. banks that may either convert into common stock of the issuer or undergo a principal write-down by a predetermined percentage upon the occurrence of a “trigger” event, such as if (a) the issuer’s capital ratio falls below a specified level or (b) certain regulatory events, such as a change in regulatory capital requirements, affect the issuer’s continued viability. Unlike traditional convertible securities, the conversion is not voluntary and the equity conversion or principal write-down features are tailored to the issuing banking institution and its regulatory requirements.

CoCos are subject to credit, interest rate and market risks associated with fixed income and equity securities generally, along with risks typically applicable to convertible securities. CoCos are also subject to loss absorption risk because coupon payments can potentially be cancelled or deferred at the issuer’s discretion or at the request of the relevant regulatory authority in order to help the bank absorb losses. Additionally, certain call provisions permit an issuer to repurchase CoCos if the regulatory environment or tax treatment of the security (e.g., tax deductibility of interest payments) changes. This

5

may result in a potential loss to the Fund if the price at which the issuer calls or repurchases the CoCos is lower than the initial purchase price by the Fund.

CoCos are subordinate in rank to traditional convertible securities and other debt obligations of an issuer in the issuer’s capital structure, and therefore, CoCos entail more risk than an issuer’s other debt obligations.

CoCos are generally speculative and their market value may fluctuate based on a number of unpredictable factors, including, but not limited to, the creditworthiness of the issuer and/or fluctuations in the issuer’s capital ratios, supply and demand for CoCos, general market conditions and available liquidity, and economic, financial and political events affecting the particular issuer or markets in general.

Alternative Entity Securities. The Funds may invest in alternative entity securities, which are the securities of entities that are formed as limited partnerships, limited liability companies, business trusts or other non-corporate entities that are similar to common or preferred stock of corporations.

Foreign Investments

Foreign Securities. Each Fund may invest in foreign securities.

Foreign securities are equity or debt securities issued by issuers outside the U.S., and include securities in the form of American Depositary Receipts (ADRs), European Depositary Receipts (EDRs), or other securities representing underlying securities of foreign issuers (foreign securities). ADRs are receipts, issued by U.S. banks, for the shares of foreign corporations, held by the bank issuing the receipt. ADRs are typically issued in registered form, denominated in U.S. dollars and designed for use in the U.S. securities markets. EDRs are similar to ADRs, except they are typically issued by European banks or trust companies, denominated in foreign currencies and designed for use outside the U.S. securities markets. ADRs and EDRs entitle the holder to all dividends and capital gains on the underlying foreign securities, less any fees paid to the bank. Purchasing ADRs or EDRs gives a Fund the ability to purchase the functional equivalent of foreign securities without going to the foreign securities markets to do so. ADRs or EDRs that are “sponsored” are those that the foreign corporation whose shares are represented by the ADR or EDR is actively involved in the issuance of the ADR or EDR, and generally provides material information about the corporation to the U.S. market. An “unsponsored” ADR or EDR program are those that the foreign corporation whose shares are held by the bank is not obligated to disclose material information in the United States, and, therefore, the market value of the ADR or EDR may not reflect important facts known only to the foreign company.

Foreign debt securities include corporate debt securities of foreign issuers, certain foreign bank obligations (see Bank Instruments) and U.S. dollar or foreign currency denominated obligations of foreign governments or their subdivisions, agencies and instrumentalities (see Foreign Government Obligations), international agencies and supranational entities.

The Funds consider various factors when determining whether a company is in a particular country or region/continent, including whether (1) it is organized under the laws of a country or of a country in a particular region/continent; (2) it has a principal office in a country or in a country in a particular region continent; (3) it derives 50% or more of its total revenues from businesses in a country or in a country in a particular region/continent; and/or (4) its securities are traded principally on a stock exchange, or in an over-the-counter (OTC) market in a particular country or in a country in a particular region/continent.

Investments by a Fund in foreign securities, including ADRs and EDRs, whether denominated in U.S. dollars or foreign currencies, may entail all of the risks set forth below in addition to those accompanying an investment in issuers in the U.S.

Currency Risk. The value in U.S. Dollars of the Fund’s non-dollar denominated foreign investments will be affected by changes in currency exchange rates. The U.S. dollar value of a foreign

6

security decreases when the value of the U.S. dollar rises against the foreign currency in which the security is denominated and increases when the value of the U.S. dollar falls against such currency.

Political and Economic Risk. The economies of many of the countries in which the Funds may invest may not be as developed as that of the United States’ economy and may be subject to significantly different forces. Political, economic or social instability and development, expropriation or confiscatory taxation, and limitations on the removal of funds or other assets could also adversely affect the value of the Funds’ investments.

Regulatory Risk. Foreign companies are generally not subject to the regulatory controls imposed on U.S. issuers and, as a consequence, there is generally less publicly available information about foreign securities than is available about domestic securities. Foreign companies may not be subject to uniform accounting, auditing and financial reporting standards, corporate governance practices and requirements comparable to those applicable to domestic companies. Therefore, financial information about foreign companies may be incomplete, or may not be comparable to the information available on U.S. companies. Income from foreign securities owned by the Funds may be reduced by a withholding tax at the source, which tax would reduce dividend income payable to the Funds’ shareholders.

There is generally less government supervision and regulation of securities exchanges, brokers, dealers, and listed companies in foreign countries than in the U.S., thus increasing the risk of delayed settlements of portfolio transactions or loss of certificates for portfolio securities. Foreign markets may also have different clearance and settlement procedures. If a Fund experiences settlement problems it may result in temporary periods when a portion of the Fund’s assets are uninvested and could cause the Fund to miss attractive investment opportunities or a potential liability to the Fund arising out of the Fund’s inability to fulfill a contract to sell such securities.

Market Risk. Investing in foreign markets generally involves certain risks not typically associated with investing in the United States. The securities markets in many foreign countries will have substantially lower trading volume than the United States markets. As a result, the securities of some foreign companies may be less liquid and experience more price volatility than comparable domestic securities. Obtaining and/or enforcing judgments in foreign countries may be more difficult, which may make it more difficult to enforce contractual obligations. Increased custodian costs as well as administrative costs (such as the need to use foreign custodians) may also be associated with the maintenance of assets in foreign jurisdictions. In addition, transaction costs in foreign securities markets are likely to be higher, since brokerage commission rates in foreign countries are likely to be higher than in the United States.

Risks of Developing/Emerging Markets Countries . Each Fund may invest up to 5% of its total assets in securities of companies located in developing/emerging markets countries. Unless a Fund’s prospectus includes a different definition, the Funds consider developing/emerging markets countries to be those countries that are included in the MSCI Emerging Markets Index.

Investments in developing/emerging markets countries present risks in addition to, or greater than, those presented by investments in foreign issuers generally, and may include the following risks:

7

Foreign Government Obligations. Each Fund may invest in debt securities of foreign governments. Debt securities issued by foreign governments are often, but not always, supported by the full faith and credit of the foreign governments, or their subdivisions, agencies or instrumentalities, that issue them. These securities involve the risks discussed above under Foreign Securities. Additionally, the issuer of the debt or the governmental authorities that control repayment of the debt may be unwilling or unable to pay interest or repay principal when due. Political or economic changes or the balance of trade may affect a country’s willingness or ability to service its debt obligations. Periods of economic uncertainty may result in the volatility of market prices of sovereign debt obligations, especially debt obligations issued by the governments of developing countries. Foreign government obligations of developing countries, and some structures of emerging market debt securities, both of which are generally below investment grade, are sometimes referred to as “Brady Bonds”. The failure of a sovereign debtor to implement economic reforms, achieve specified levels of economic performance, or repay principal or interest when due may result in the cancellation of third-party commitments to lend funds to the sovereign debtor, which may impair the debtor’s ability or willingness to service its debts.

Foreign Exchange Transactions. Each Fund that may invest in foreign currency-denominated securities has the authority to purchase and sell put and call options on foreign currencies (foreign currency options), foreign currency futures contracts and related options, currency–related swaps and may engage in foreign currency transactions either on a spot (i.e., for prompt delivery and settlement) basis at the rate prevailing in the currency exchange market at the time or through forward foreign currency contracts (see Forward Foreign Currency Contracts). The use of these instruments may result in a loss by a Fund if the counterparty to the transaction (particularly with respect to OTC derivatives, as discussed further below) does not perform as promised, including because of such counterparty’s bankruptcy or insolvency.

The Funds will incur costs in converting assets from one currency to another. Foreign exchange dealers may charge a fee for conversion. In addition, dealers may realize a profit based on the difference between the prices at which they buy and sell various currencies in the spot and forward markets.

A Fund will generally engage in foreign exchange transactions in order to complete a purchase or sale of foreign currency denominated securities. The Funds may also use foreign currency options, forward foreign currency contracts and currency-related swap contracts to increase or reduce exposure to a foreign currency or to shift exposure from one foreign currency to another in a cross currency hedge or to enhance returns. These transactions are intended to minimize the risk of loss due to a decline in the value of the hedged currencies; however, at the same time, they tend to limit any potential gain which might result should the value of such currencies increase. Open positions in forward foreign currency contracts used for non-hedging purposes will be covered by the segregation of a sufficient amount of liquid assets.

A Fund may purchase and sell foreign currency futures contracts and purchase and write foreign currency options to increase or decrease its exposure to different foreign currencies.

A Fund may also purchase and write foreign currency options in connection with foreign currency futures or forward foreign currency contracts. Foreign currency futures contracts are similar to forward foreign currency contracts, except that they are traded on exchanges and have standard contract sizes and delivery dates. Most currency futures contracts call for payment or delivery in U.S. dollars. The uses and risks of foreign currency futures contracts are similar to those of futures contracts relating to securities or indices (see Futures Contracts). Foreign currency futures contracts values can be expected to correlate with exchange rates but may not reflect other factors that affect the value of the Fund’s investments.

8

Whether or not any hedging strategy will be successful is highly uncertain, and use of hedging strategies may leave a Fund in a less advantageous position than if a hedge had not been established. Moreover, it is impossible to forecast with precision the market value of portfolio securities at the expiration of a foreign currency forward contract. Accordingly, a Fund may be required to buy or sell additional currency on the spot market (and bear the expense of such transaction) if Invesco’s or the Sub-Advisers’ predictions regarding the movement of foreign currency or securities markets prove inaccurate.

Certain Funds may hold a portion of their assets in bank deposits denominated in foreign currencies, so as to facilitate investment in foreign securities as well as protect against currency fluctuations and the need to convert such assets into U.S. dollars (thereby also reducing transaction costs). To the extent these monies are converted back into U.S. dollars, the value of the assets so maintained will be affected favorably or unfavorably by changes in foreign currency exchange rates and exchange control regulations. Foreign exchange transactions may involve some of the risks of investments in foreign securities. For a discussion of tax considerations relating to foreign currency transactions, see “Dividends, Distributions, and Tax Matters – Tax Matters – Tax Treatment of Portfolio Transactions – Foreign currency transactions.”

Under definitions adopted by the Commodity Futures Trading Commission (CFTC) and the U.S. Securities and Exchange Commission (SEC), non-deliverable foreign exchange forwards and OTC foreign exchange options are considered “swaps.” These instruments are therefore included in the definition of “commodity interests” for purposes of determining whether the Funds’ service providers qualify for certain exemptions and exclusions from regulation by the CFTC. Although forward foreign currency contracts have historically been traded in the OTC market, as swaps they may in the future be regulated to be centrally cleared and traded on public facilities. For more information, see “Forward Foreign Currency Contracts” and “Swaps.”

Exchange-Traded Funds

Exchange-Traded Funds (ETFs). Each Fund may purchase shares of exchange-traded funds (ETFs). Most ETFs are registered under the 1940 Act as investment companies, although others may not be registered as investment companies and are registered as commodity pools. Therefore, a Fund’s purchase of shares of an ETF may be subject to the restrictions on investments in other investment companies discussed under “Other Investment Companies.” ETFs have management fees, which increase their cost. Each Fund may invest in ETFs advised by unaffiliated advisers as well as ETFs advised by Invesco PowerShares Capital Management LLC (PowerShares). Invesco, the Sub-Advisers and PowerShares are affiliates of each other as they are all indirect wholly-owned subsidiaries of Invesco Ltd.

Generally, ETFs hold portfolios of securities, commodities and/or currencies that are designed to replicate, as closely as possible before expenses, the performance of a specified index. The performance results of ETFs will not replicate exactly the performance of the pertinent index due to transaction and other expenses, including fees to service providers, borne by ETFs. Furthermore, there can be no assurance that the portfolio of securities, commodities and/or currencies purchased by an ETF will replicate a particular index. Some ETFs are actively managed and instead of replicating, they seek to outperform a particular index or basket or price of a commodity or currency. ETF shares are sold to and redeemed by Authorized Participants at net asset value only in large blocks called creation units and redemption units, respectively. ETF shares also may be purchased and sold by all other investors in secondary market trading on national securities exchanges, which allows investors to purchase and sell ETF shares at their market price throughout the day.

Investments in ETFs generally present the same primary risks as an investment in a conventional mutual fund that has the same investment objective, strategy and policies. Investments in ETFs further involve the same risks associated with a direct investment in the types of securities, commodities and/or currencies included in the indices the ETFs are designed to replicate. In addition, shares of an ETF may trade at a market price that is higher or lower than their net asset value and an active trading market in such shares may not develop or continue. Moreover, trading of an ETF’s shares may be halted if the

9

listing exchange’s officials deem such action to be appropriate, the shares are de-listed from the exchange, or the activation of market-wide “circuit breakers” (which are tied to large decreases in stock prices) halts stock trading generally.

Debt Investments

U.S. Government Obligations. Each Fund may invest in U.S. Government obligations, which are obligations issued or guaranteed by the U.S. Government, its agencies and instrumentalities, and include bills, notes and bonds issued by the U.S. Treasury, as well as “stripped” or “zero coupon” U.S. Treasury obligations.

U.S. Government Obligations may be, (i) supported by the full faith and credit of the U.S. Treasury, (ii) supported by the right of the issuer to borrow from the U.S. Treasury, (iii) supported by the discretionary authority of the U.S. Government to purchase the agency’s obligations, or (iv) supported only by the credit of the instrumentality. There is a risk that the U.S. Government may choose not to provide financial support to U.S. Government-sponsored agencies or instrumentalities if it is not legally obligated to do so. In that case, if the issuer were to default, a Fund holding securities of such issuer might not be able to recover its investment from the U.S. Government. For example, while the U.S. Government has provided financial support to Federal National Mortgage Association (FNMA) and Federal Home Loan Mortgage Corporation (FHLMC), no assurance can be given that the U.S. Government will always do so, since the U.S. Government is not so obligated by law. There also is no guarantee that the government would support Federal Home Loan Banks. Accordingly, securities of FNMA, FHLMC and Federal Home Loan Banks, and other agencies, may involve a risk of non-payment of principal and interest. Any downgrade of the credit rating of the securities issued by the U.S. government may result in a downgrade of securities issued by its agencies or instrumentalities, including government sponsored entities.

Temporary Investments. Each Fund may invest a portion of its assets in affiliated money market funds or in the types of money market instruments in which those Funds would invest or other short-term U.S. government securities for cash management purposes. Each Fund may invest up to 100% of its assets in investments that may be inconsistent with the Fund’s principal investment strategies for temporary defensive purposes in anticipation of or in response to adverse market, economic, political or other conditions, or atypical circumstances such as unusually large cash inflows or redemptions. As a result, the Fund may not achieve its investment objective.

Mortgage-Backed and Asset-Backed Securities. Each Fund may invest in mortgage-backed and asset-backed securities including commercial mortgage-backed securities (CMBS) and residential mortgage-backed securities (RMBS). Mortgage-backed securities are mortgage-related securities issued or guaranteed by the U.S. government, its agencies and instrumentalities, or issued by nongovernment entities, such as commercial banks and other private lenders. Mortgage-related securities represent ownership in pools of mortgage loans assembled for sale to investors by various government agencies such as the Government National Mortgage Association (GNMA) and government-related organizations such as the FNMA and the FHLMC, as well as by nongovernment issuers such as commercial banks, savings and loan institutions, mortgage bankers and private mortgage insurance companies. Although certain mortgage-related securities are guaranteed by a third party or otherwise similarly secured, the market value of the security, which may fluctuate, is not so secured. These securities differ from conventional bonds in that the principal is paid back to the investor as payments are made on the underlying mortgages in the pool. Accordingly, a Fund receives monthly scheduled payments of principal and interest along with any unscheduled principal prepayments on the underlying mortgages. Because these scheduled and unscheduled principal payments must be reinvested at prevailing interest rates, mortgage-backed securities do not provide an effective means of locking in long-term interest rates for the investor.

In addition, there are a number of important differences among the agencies and instrumentalities of the U.S. Government that issue mortgage-related securities and among the securities they issue. Mortgage-related securities issued by GNMA include GNMA Mortgage Pass-Through Certificates (also

10

known as Ginnie Maes) which are guaranteed as to the timely payment of principal and interest. That guarantee is backed by the full faith and credit of the U.S. Treasury. GNMA is a corporation wholly owned by the U.S. Government within the Department of Housing and Urban Development. Mortgage-related securities issued by FNMA include FNMA Guaranteed Mortgage Pass-Through Certificates (also known as Fannie Maes) and are guaranteed as to payment of principal and interest by FNMA itself and backed by a line of credit with the U.S. Treasury. FNMA is a government-sponsored entity wholly owned by public stockholders. Mortgage-related securities issued by FHLMC include FHLMC Mortgage Participation Certificates (also known as Freddie Macs) guaranteed as to payment of principal and interest by FHLMC itself and backed by a line of credit with the U.S. Treasury. FHLMC is a government-sponsored entity wholly owned by public stockholders.

On September 7, 2008, FNMA and FHLMC were placed under the conservatorship of the Federal Housing Finance Agency (FHFA) to provide stability in the financial markets, mortgage availability and taxpayer protection by preserving FNMA and FHLMC’s assets and property and putting FNMA and FHLMC in a sound and solvent position. Under the conservatorship, the management of FNMA and FHLMC was replaced.

Since 2009, both FNMA and FHLMC have received significant capital support through U.S. Treasury preferred stock purchases and Federal Reserve purchases of the entities’ mortgage-backed securities.

In February 2011, the Obama Administration produced a report to Congress outlining proposals to wind down FNMA and FHLMC and reduce the government’s role in the mortgage market. Discussions among policymakers continue, however, as to whether FNMA and FHLMC should be nationalized, privatized, restructured, or eliminated altogether. FNMA and FHLMC also are the subject of several continuing legal actions and investigations over certain accounting, disclosure or corporate governance matters, which (along with any resulting financial restatements) may continue to have an adverse effect on the guaranteeing entities. Importantly, the future of the entities is in question as the U.S. Government considers multiple options regarding the future of FNMA and FHLMC.

Asset-backed securities are structured like mortgage-backed securities, but instead of mortgage loans or interests in mortgage loans, the underlying assets may include such items as motor vehicle installment sales contracts or installment loan contracts, leases of various types of real and personal property, and receivables from credit card agreements and from sales of personal property. Regular payments received on asset-backed securities include both interest and principal. Asset-backed securities typically have no U.S. Government backing. Additionally, the ability of an issuer of asset-backed securities to enforce its security interest in the underlying assets may be limited.

If a Fund purchases a mortgage-backed or other asset-backed security at a premium, the premium may be lost if there is a decline in the market value of the security whether resulting from changes in interest rates or payments in the underlying collateral. As with other interest-bearing securities, the prices of such securities are inversely affected by changes in interest rates. Although the value of a mortgage-backed or other asset-backed security may decline when interest rates rise, the converse is not necessarily true, since in periods of declining interest rates the mortgages and loans underlying the securities are prone to prepayment, thereby shortening the average life of the security and shortening the period of time over which income at the higher rate is received. When interest rates are rising, the rate of prepayment tends to decrease, thereby lengthening the period of time over which income at the lower rate is received. For these and other reasons, a mortgage-backed or other asset-backed security’s average maturity may be shortened or lengthened as a result of interest rate fluctuations and, therefore, it is not possible to predict accurately the security’s return. In addition, while the trading market for short-term mortgages and asset-backed securities is ordinarily quite liquid, in times of financial stress the trading market for these securities may become restricted.

CMBS and RMBS generally offer a higher rate of interest than government and government-related mortgage-backed securities because there are no direct or indirect government or government agency guarantees of payment. The risk of loss due to default on CMBS and RMBS is historically higher

11

because neither the U.S. Government nor an agency or instrumentality have guaranteed them. CMBS and RMBS whose underlying assets are neither U.S. Government securities nor U.S. Government-insured mortgages, to the extent that real properties securing such assets may be located in the same geographical region, may also be subject to a greater risk of default than other comparable securities in the event of adverse economic, political or business developments that may affect such region and, ultimately, the ability of property owners to make payments of principal and interest on the underlying mortgages. Non-government mortgage-backed securities are generally subject to greater price volatility than those issued, guaranteed or sponsored by government entities because of the greater risk of default in adverse market conditions. Where a guarantee is provided by a private guarantor, the Fund is subject to the credit risk of such guarantor, especially when the guarantor doubles as the originator.

Bank Instruments . Bank instruments are unsecured interest bearing bank deposits. Bank instruments include, but are not limited to, certificates of deposits, time deposits, and banker’s acceptances from U.S. or foreign banks, as well as Eurodollar certificates of deposit (Eurodollar CDs) and Eurodollar time deposits of foreign branches of domestic banks. Some certificates of deposit are negotiable interest-bearing instruments with a specific maturity issued by banks and savings and loan institutions in exchange for the deposit of funds, and can typically be traded in the secondary market prior to maturity. Other certificates of deposit, like time deposits, are non-negotiable receipts issued by a bank in exchange for the deposit of funds which earns a specified rate of interest over a definite period of time; however, it cannot be traded in the secondary market. A banker’s acceptance is a bill of exchange or time draft drawn on and accepted by a commercial bank.

An investment in Eurodollar CDs or Eurodollar time deposits may involve some of the same risks that are described for Foreign Securities.

Investment Grade Debt Obligations. Each Fund may invest in U.S. dollar-denominated debt obligations issued or guaranteed by U.S. corporations or U.S. commercial banks, U.S. dollar-denominated obligations of foreign issuers and debt obligations of foreign issuers denominated in foreign currencies. Debt obligations include, among others, bonds, notes, debentures and variable rate demand notes. The Adviser considers investment grade securities to include: (i) securities rated BBB- or higher by Standard & Poor’s Rating Service (S&P) or Baa3 or higher by Moody’s Investor Service Inc. (Moody’s) or an equivalent rating by another nationally recognized statistical rating organization (NRSRO), (ii) securities with comparable short-term NRSRO ratings, or (iii) unrated securities determined by the Adviser to be of comparable quality, each at the time of purchase. The description of debt securities ratings may be found in Appendix A.

In choosing corporate debt securities on behalf of a Fund, portfolio managers may consider:

Debt securities are subject to a variety of risks, such as interest rate risk, income risk, prepayment risk, inflation risk, credit risk, currency risk and default risk.

Other Investments

Real Estate Investment Trusts (REITs). Each Fund may invest in equity interests and/or debt obligations issued by REITs.

12

REITs are trusts that sell equity or debt securities to investors and use the proceeds to invest in real estate or interests therein. A REIT may focus on particular projects, such as apartment complexes, or geographic regions, such as the southeastern United States or both. Equity REITs invest the majority of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling property that has appreciated in value. Mortgage REITs invest the majority of their assets in real estate mortgages and derive income from the collection of interest payments.

Investments in REITs may be subject to many of the same risks as direct investments in real estate. These risks include difficulties in valuing and trading real estate, declines in the value of real estate, risks related to general and local economic conditions, adverse changes in the climate for real estate, environmental liability risks, increases in property taxes and operating expenses, changes in zoning laws, casualty or condemnation losses, limitations on rents, changes in neighborhood values, the appeal of properties to tenants, heavy cash flow dependency and increases in interest rates. To the extent that a Fund invests in REITs, the Fund could conceivably own real estate directly as a result of a default on the REIT interests or obligations it owns.

In addition to the risks of direct real estate investment described above, equity REITs may be affected by any changes in the value of the underlying property owned by the trusts, while mortgage REITs may be affected by the quality of any credit extended. REITs are also subject to the following risks: they are dependent upon management skill and on cash flows; are not diversified; are subject to defaults by borrowers, self-liquidation, and the possibility of failing to maintain an exemption from the 1940 Act; and are subject to interest rate risk. A Fund that invests in REITs will bear a proportionate share of the expenses of the REITs.

Furthermore, for tax reasons, a REIT may impose limits on how much of its securities any one investor may own. These ownership limitations (also called “excess share provisions”) may be based on ownership of securities by multiple funds and accounts managed by the same investment adviser and typically result in adverse consequences (such as automatic divesture of voting and dividend rights for shares that exceed the excess share provision) to investors who exceed the limit. A REIT’s excess share provision may result in a Fund being unable to purchase (or otherwise obtain economic exposure to) the desired amounts of certain REITs. In some circumstances, a Fund may seek and obtain a waiver from a REIT to exceed the REIT’s ownership limitations without being subject to the adverse consequences of exceeding such limit were a waiver not obtained, provided that the Fund complies with the provisions of the waiver.

Other Investment Companies. Unless otherwise indicated in this SAI or a Fund’s prospectus, each Fund may purchase shares of other investment companies, including ETFs. For each Fund, the 1940 Act imposes the following restrictions on investments in other investment companies: (i) a Fund may not purchase more than 3% of the total outstanding voting stock of another investment company; (ii) a Fund may not invest more than 5% of its total assets in securities issued by another investment company; and (iii) a Fund may not invest more than 10% of its total assets in securities issued by other investment companies. The 1940 Act and related rules provide certain exemptions from these restrictions. These restrictions do not apply to investments by the Funds in investment companies that are money market funds, including money market funds that have Invesco or an affiliate of Invesco as in an investment adviser (the Affiliated Money Market Funds).

When a Fund purchases shares of another investment company, including an Affiliated Money Market Fund, the Fund will indirectly bear its proportionate share of the advisory fees and other operating expenses of such investment company and will be subject to the risks associated with the portfolio investments of the underlying investment company.

Master Limited Partnerships (MLP s). Invesco Charter Fund and Invesco Diversified Dividend Fund may invest in MLPs.

13

An MLP is a public limited partnership. Although the characteristics of MLPs closely resemble a traditional limited partnership, a major difference is that MLPs may trade on a public exchange or in the over-the-counter market. The ability to trade on a public exchange or in the over-the-counter market provides a certain amount of liquidity not found in many limited partnership investments. However, MLP interests may be less liquid than conventional publicly traded securities.

The risks of investing in an MLP are similar to those of investing in a partnership and include more flexible governance structures, which could result in less protection for the MLP investor than investors in a corporation. Investors in an MLP would normally not be liable for the debts of the MLP beyond the amount that the investor has contributed but investors may not be shielded to the same extent that a shareholder of a corporation would be.

MLPs are generally considered interest-rate sensitive investments. During periods of interest rate volatility, these investments may not provide attractive returns.

Investment Techniques

Forward Commitments, When-Issued and Delayed Delivery Securities. Each Fund other than Invesco Summit Fund may purchase or sell securities on a forward commitment, when-issued or delayed-delivery basis.

Securities purchased or sold on a forward commitment, when-issued or delayed delivery basis involve delivery and payment that take place in the future after the date of the commitment to purchase or sell the securities at a pre-determined price and/or yield. Settlement of such transactions normally occurs a month or more after the purchase or sale commitment is made. Typically, no interest accrues to the purchaser until the security is delivered. Forward commitments also include “to be announced” (TBA) synthetic securities, which are contracts for the purchase or sale of mortgage-backed securities to be delivered at a future agreed upon date, whereby the specific mortgage pool numbers or the number of pools that will be delivered to fulfill the trade obligation or terms of the contract are unknown at the time of the trade. A Fund may also enter into buy/sell back transactions (a form of delayed delivery agreement). In a buy/sell back transaction, a Fund enters a trade to sell securities at one price and simultaneously enters a trade to buy the same securities at another price for settlement at a future date. Although a Fund generally intends to acquire or dispose of securities on a forward commitment, when-issued or delayed delivery basis, a Fund may sell these securities or its commitment before the settlement date if deemed advisable.

When purchasing a security on a forward commitment, when-issued or delayed-delivery basis, a Fund assumes the rights and risks of ownership of the security, including the risk of price and yield fluctuation, and takes such fluctuations into account when determining its net asset value. Securities purchased on a forward commitment, when-issued or delayed-delivery basis are subject to changes in value based upon the public’s perception of the creditworthiness of the issuer and changes, real or anticipated, in the level of interest rates. Accordingly, securities acquired on such a basis may expose a Fund to risks because they may experience such fluctuations prior to actual delivery. Purchasing securities on a forward commitment, when-issued or delayed delivery basis may involve the additional risk that the yield available in the market when the delivery takes place actually may be higher than that obtained in the transaction itself.

Many forward commitments, when-issued and delayed delivery transactions, including TBAs, are also subject to the risk that a counterparty may become bankrupt or otherwise fail to perform its obligations due to financial difficulties, including making payments or fulfilling obligations to a Fund. A Fund may obtain no or only limited recovery in a bankruptcy or other organizational proceedings, and any recovery may be significantly delayed. With respect to forward settling TBA transactions involving U.S. Government agency mortgage-backed securities, the counterparty risk may be mitigated by the recently adopted requirement that counterparties exchange variation margin on a regular basis as the market value of the deliverable security fluctuates.

14

Investment in these types of securities may increase the possibility that the Fund will incur short-term gains subject to federal taxation or short-term losses if the Fund must engage in portfolio transactions in order to honor its commitment. Until the settlement date, a Fund will segregate liquid assets of a dollar value sufficient at all times to make payment for the forward commitment, when-issued or delayed delivery transactions. Such segregated liquid assets will be marked-to-market daily, and the amount segregated will be increased if necessary to maintain adequate coverage of the delayed delivery commitments. No additional forward, when-issued or delayed delivery commitments will be made by a Fund if, as a result, more than 25% of the Fund’s total assets would become so committed. The delayed delivery securities, which will not begin to accrue interest or dividends until the settlement date, will be recorded as an asset of a Fund and will be subject to the risk of market fluctuation. The purchase price of the delayed delivery securities is a liability of a Fund until settlement. TBA transactions and transactions in other forward-settling mortgage-backed securities are effected pursuant to a collateral agreement with the seller. A Fund provides to the seller collateral consisting of cash or liquid securities in an amount as specified by the agreement upon initiation of the transaction. A Fund will make payments throughout the term of the transaction as collateral values fluctuate to maintain full collateralization for the term of the transaction. Collateral will be marked-to-market every business day. If the seller defaults on the transaction or declares bankruptcy or insolvency, a Fund might incur expenses in enforcing its rights, or the Fund might experience delay and costs in recovering collateral or may suffer a loss of principal and interest if the value of the collateral declines. In these situations, a Fund will be subject to greater risk that the value of the collateral will decline before it is recovered or, in some circumstances, the Fund may not be able to recover the collateral, and the Fund will experience a loss.

Short Sales. Each Fund may engage in short sales. A Fund will not sell a security short if, as a result of such short sale, the aggregate market value of all securities sold short exceeds 10% of the Fund’s total assets. This limitation does not apply to short sales against the box.

A short sale involves the sale of a security which a Fund does not own in the hope of purchasing the same security at a later date at a lower price. To make delivery to the buyer, a Fund must borrow the security from a broker. The Fund normally closes a short sale by purchasing an equivalent number of shares of the borrowed security on the open market and delivering them to the broker. A short sale is typically affected when the Adviser believes that the price of a particular security will decline. Open short positions using options, futures, swaps or forward foreign currency contracts are not deemed to constitute selling securities short.

To secure its obligation to deliver the securities sold short to the broker, a Fund will be required to deposit cash or liquid securities with the broker. In addition, the Fund may have to pay a premium to borrow the securities, and while the loan of the security sold short is outstanding, the Fund is required to pay to the broker the amount of any dividends paid on shares sold short. In addition to maintaining collateral with the broker, a Fund will earmark or segregate an amount of cash or liquid securities equal to the difference, if any, between the current market value of the securities sold short and any cash or liquid securities deposited as collateral with the broker-dealer in connection with the short sale. The collateral will be marked to market daily. The amounts deposited with the broker or segregated with the custodian do not have the effect of limiting the amount of money that the Fund may lose on a short sale. Short sale transactions covered in this manner are not considered senior securities and are not subject to the Fund’s fundamental investment limitations on senior securities and borrowings.

Short positions create a risk that a Fund will be required to cover them by buying the security at a time when the security has appreciated in value, thus resulting in a loss to the Fund. A short position in a security poses more risk than holding the same security long. Because a short position loses value as the security’s price increases, the loss on a short sale is theoretically unlimited. The loss on a long position is limited to what the Fund originally paid for the security together with any transaction costs. The Fund may not always be able to borrow a security the Fund seeks to sell short at a particular time or at an acceptable price. It is possible that the market value of the securities the Fund holds in long positions will decline at the same time that the market value of the securities the Fund has sold short increases, thereby increasing the Fund’s potential volatility. The Fund will incur transaction costs including interest expenses, in connection with opening, maintaining, and closing short sales against the

15

box. In addition, the Fund may be required to pay dividends, interest, premiums and other expenses in connection with a short sale. Any benefit for the Fund resulting from the short sale will be decreased, and the amount of any ultimate gain or loss will be decreased or increased, respectively, by the amount of such expenses.

The Fund may also enter into short sales against the box. Short sales against the box are short sales of securities that a Fund owns or has the right to obtain (equivalent in kind or amount of the securities sold short). If a Fund enters into a short sale against the box, it will be required to set aside securities equivalent in kind and amount to the securities sold short (or securities convertible or exchangeable into such securities) and will be required to hold such securities while the short sale is outstanding. The Fund will incur transaction costs including interest expenses, in connection with opening, maintaining, and closing short sales against the box.

Short sales against the box result in a “constructive sale” and require a Fund to recognize any taxable gain unless an exception to the constructive sale applies. See “Dividends, Distributions and Tax Matters – Tax Matters – Tax Treatment of Portfolio Transactions – Options, futures, forward contracts, swap agreements and hedging transactions.”

Margin Transactions. None of the Funds will purchase any security on margin, except that each Fund may obtain such short-term credits as may be necessary for the clearance of purchases and sales of portfolio securities. The payment by a Fund of initial or variation margin in connection with futures, swaps or related options transactions and the use of a reverse repurchase agreement to finance the purchase of a security will not be considered the purchase of a security on margin.

Interfund Loans. The SEC has issued an exemptive order permitting the Invesco Funds to borrow money from and lend money to each other for temporary or emergency purposes. The Invesco Funds’ interfund lending program is subject to a number of conditions, including the requirements that: (1) an interfund loan generally will occur only if the interest rate on the loan is more favorable to the borrowing fund than the interest rate typically available from a bank for a comparable transaction and the rate is more favorable to the lending fund than the rate available on overnight repurchase transactions; (2) an Invesco Fund may not lend more than 15% of its net assets through the program (measured at the time of the last loan); and (3) an Invesco Fund may not lend more than 5% of its net assets to another Invesco Fund through the program (measured at the time of the loan). A Fund may participate in the program only if and to the extent that such participation is consistent with the Fund’s investment objective and investment policies. Interfund loans have a maximum duration of seven days. Loans may be called with one day’s notice and may be repaid on any day.

Borrowing. The Funds may borrow money to the extent permitted under the Fund Policies. Such borrowings may be utilized (i) for temporary or emergency purposes; (ii) in anticipation of or in response to adverse market conditions; or, (iii) for cash management purposes. All borrowings are limited to an amount not exceeding 33 1/3% of a Fund’s total assets (including the amount borrowed) less liabilities (other than borrowings). Any borrowings that exceed this amount will be reduced within three business days to the extent necessary to comply with the 33 1/3% limitation even if it is not advantageous to sell securities at that time.

If there are unusually heavy redemptions, a Fund may have to sell a portion of its investment portfolio at a time when it may not be advantageous to do so. Selling Fund securities under these circumstances may result in a lower net asset value per share or decreased dividend income, or both. Invesco and the Sub-Advisers believe that, in the event of abnormally heavy redemption requests, a Fund’s borrowing ability would help to mitigate any such effects and could make the forced sale of their portfolio securities less likely.

The Funds may borrow from a bank, broker-dealer, or an Invesco Fund. Additionally, the Funds are permitted to temporarily carry a negative or overdrawn balance in their account with their custodian bank. To compensate the custodian bank for such overdrafts, the Funds may either (i) leave Funds as a compensating balance in their account so the custodian bank can be compensated by earning interest on

16

such Funds; or (ii) compensate the custodian bank by paying it an agreed upon rate. A Fund may not purchase additional securities when any borrowings from banks or broker-dealers exceed 5% of the Fund’s total assets or when any borrowings from an Invesco Fund are outstanding.

Lending Portfolio Securities. Each Fund may lend its portfolio securities (principally to broker-dealers) to generate additional income. Such loans are callable at any time and are continuously secured by segregated collateral equal to no less than the market value, determined daily, of the loaned securities. Such collateral will be cash, letters of credit, or debt securities issued or guaranteed by the U.S. Government or any of its agencies. Each Fund may lend portfolio securities to the extent of one-third of its total assets. A Fund will loan its securities only to parties that Invesco has determined are in good standing and when, in Invesco’s judgment, the income earned would justify the risks.

A Fund will not have the right to vote securities while they are on loan, but it can call a loan in anticipation of an important vote. The Fund would receive income in lieu of dividends on loaned securities and may, at the same time, generate income on the loan collateral or on the investment of any cash collateral.

If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, the Fund could experience delays and costs in recovering securities loaned or gaining access to the collateral. If the Fund is not able to recover the securities loaned, the Fund may sell the collateral and purchase a replacement security in the market. Lending securities entails a risk of loss to the Fund if and to the extent that the market value of the loaned securities increases and the collateral is not increased accordingly.

Any cash received as collateral for loaned securities will be invested, in accordance with a Fund’s investment guidelines, in short-term money market instruments or Affiliated Money Market Funds. Investing this cash subjects that investment to market appreciation or depreciation. For purposes of determining whether a Fund is complying with its investment policies, strategies and restrictions, the Fund will consider the loaned securities as assets of the Fund, but will not consider any collateral received as a Fund asset. The Fund will bear any loss on the investment of cash collateral.

For a discussion of tax considerations relating to lending portfolio securities, see “Dividends, Distributions and Tax Matters – Tax Matters – Tax Treatment of Portfolio Transactions – Securities lending.”

Repurchase Agreements. Each Fund may engage in repurchase agreement transactions involving the types of securities in which it is permitted to invest. Repurchase agreements are agreements under which a Fund acquires ownership of a security from a broker-dealer or bank that agrees to repurchase the security at a mutually agreed upon time and price (which is higher than the purchase price), thereby determining the yield during a Fund’s holding period. A Fund may enter into a “continuing contract” or “open” repurchase agreement under which the seller is under a continuing obligation to repurchase the underlying securities from the Fund on demand and the effective interest rate is negotiated on a daily basis. Repurchase agreements may be viewed as loans made by a Fund which are collateralized by the securities subject to repurchase.

In any repurchase transaction, collateral for a repurchase agreement may include cash items, obligations issued by the U.S. Government or its agencies or instrumentalities. A Fund may engage in repurchase agreements collateralized by securities that are rated investment grade and below investment grade by the requisite NRSROs or underrated securities of comparable quality, loan participations and equities.

If the seller of a repurchase agreement fails to repurchase the security in accordance with the terms of the agreement, a Fund might incur expenses in enforcing its rights, and could experience a loss on the sale of the underlying security to the extent that the proceeds of the sale including accrued interest are less than the resale price provided in the agreement, including interest. In addition, although the Bankruptcy Code and other insolvency laws may provide certain protections for some types of

17

repurchase agreements, if the seller of a repurchase agreement should be involved in bankruptcy or insolvency proceedings, a Fund may incur delay and costs in selling the underlying security or may suffer a loss of principal and interest if the value of the underlying security declines. The securities underlying a repurchase agreement will be marked-to-market every business day so that the value of such securities is at least equal to the investment value of the repurchase agreement, including any accrued interest thereon. The Funds may enter into repurchase agreements that involve securities that would be subject to a court “stay” in the event of the seller’s bankruptcy or insolvency. A “stay” will prevent a Fund from selling the securities it holds under a repurchase agreement until permitted by a court. In these situations a Fund will be subject to greater risk that the value of the securities will decline before they are sold, and that the Fund will experience a loss.

The securities underlying a repurchase agreement will be marked-to-market every business day so that the value of such securities is at least equal to the investment value of the repurchase agreement, including any accrued interest thereon. Custody of the securities will be maintained by the Fund’s custodian or sub-custodian for the duration of the agreement.

The Funds may invest their cash balances in joint accounts with other Invesco Funds for the purpose of investing in repurchase agreements with maturities not to exceed 60 days, and in certain other money market instruments with remaining maturities not to exceed 90 days. Repurchase agreements may be considered loans by a Fund under the 1940 Act.

Invesco Charter Fund may enter into repurchase agreements (at any time up to 50% of its total net assets), using only U.S. Government Securities, for the sole purpose of increasing its yield on idle cash.

Restricted and Illiquid Securities. Each Fund may invest up to 15% of its net assets in securities that are illiquid.

Illiquid securities are securities that cannot be disposed of within seven days in the normal course of business at approximately the price at which they are valued. Illiquid securities may include a wide variety of investments, such as: (1) repurchase agreements maturing in more than seven days (unless the agreements have demand/redemption features); (2) OTC options contracts and certain other derivatives (including certain swap agreements); (3) fixed time deposits that are not subject to prepayment or that provide for withdrawal penalties upon prepayment (other than overnight deposits); (4) loan interests and other direct debt instruments; (5) municipal lease obligations; (6) commercial paper issued pursuant to Section 4(2) of the Securities Act of 1933, as amended (the 1933 Act); and (7) securities that are unregistered, that can be sold to qualified institutional buyers in accordance with Rule 144A under the 1933 Act, or that are exempt from registration under the 1933 Act, as amended, or otherwise restricted under the federal securities laws.

Limitations on the resale of restricted securities may have an adverse effect on their marketability, which may prevent a Fund from disposing of them promptly at reasonable prices. The Fund may have to bear the expense of registering such securities for resale, and the risk of substantial delays in effecting such registrations. A Fund’s difficulty valuing and selling illiquid securities may result in a loss or be costly to the Fund.

If a substantial market develops for a restricted security or other illiquid investment held by a Fund, it may be treated as a liquid security, in accordance with procedures and guidelines approved by the Board. While Invesco monitors the liquidity of restricted securities on a daily basis, the Board oversees and retains ultimate responsibility for Invesco’s liquidity determinations. Invesco considers various factors when determining whether a security is liquid, including the frequency of trades, availability of quotations and number of dealers or qualified institutional buyers in the market.

18

Derivatives

A derivative is a financial instrument whose value is dependent upon the value of other assets, rates or indices, referred to as underlying reference assets. These underlying reference assets may include, among others, commodities, stocks, bonds, interest rates, currency exchange rates or related indices. Derivatives include swaps, options, futures and forward foreign currency contracts. Some derivatives, such as futures and certain options, are traded on U.S. commodity and securities exchanges, while other derivatives, such as many types of swap agreements, are privately negotiated and entered into in the OTC market. In addition, the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the Dodd-Frank Act) and implementing rules require many types of swaps to be traded on public facilities and centrally cleared.

Derivatives may be used for “hedging,” which means that they may be used when the portfolio manager seeks to protect the Fund’s investments from a decline in value, which could result from changes in interest rates, market prices, currency fluctuations and other market factors. Derivatives may also be used when the portfolio managers seek to increase liquidity, implement a tax or cash management strategy, invest in a particular stock, bond or segment of the market in a more efficient or less expensive way, modify the characteristics of the Fund’s portfolio investments, for example, duration, and/or to enhance return. However derivatives are used, their successful use is not assured and will depend upon, among other factors, the portfolio manager’s ability to predict and understand relevant market movements.

Because certain derivatives involve leverage, that is, the amount invested may be smaller than the full economic exposure of the derivative instrument and the Fund could lose more than it invested, federal securities laws, regulations and guidance may require the Fund to earmark assets, to reduce the risks associated with derivatives, or to otherwise hold instruments that offset the Fund’s current obligations under the derivatives instrument. This process is known as “cover.” A Fund will not enter into any derivative transaction unless it can comply with SEC guidance regarding cover, and, if SEC guidance so requires, a Fund will earmark cash or liquid assets with a value at least sufficient to cover its current obligations under a derivative transaction or otherwise “cover” the transaction in accordance with applicable SEC guidance. If a large portion of a Fund’s assets is used for cover, it could affect portfolio management or the Fund’s ability to meet redemption requests or other current obligations. The leverage involved in certain derivative transactions may result in a Fund’s net asset value being more sensitive to changes in the value of the related investment.

Commodity Exchange Act (CEA) Regulation and Exclusions:

Exclusion of Adviser from commodity pool operator definition: With respect to the Funds, Invesco has claimed an exclusion from the definition of “commodity pool operator” (CPO) under the CEA and the rules of the CFTC and, therefore, is not subject to CFTC registration or regulation as a CPO. In addition, Invesco is relying upon a related exclusion from the definition of “commodity trading advisor” (CTA) under the CEA and the rules of the CFTC with respect to the Funds.

The terms of the CPO exclusion require the Funds, among other things, to adhere to certain limits on its investments in “commodity interests.” Commodity interests include commodity futures, commodity options and swaps, which in turn include non-deliverable forwards, as further described below. Because Invesco and the Funds intend to comply with the terms of the CPO exclusion, the Funds may, in the future, need to adjust their investment strategies, consistent with its investment objective, to limit its investments in these types of instruments. The Funds are not intended as a vehicle for trading in the commodity futures, commodity options or swaps markets. The CFTC has neither reviewed nor approved Invesco’s reliance on these exclusions, or the Funds, their investment strategies or this SAI.

Generally, the exclusion from CPO regulation on which Invesco relies requires the Funds to meet one of the following tests for its commodity interest positions, other than positions entered into for bona fide hedging purposes (as defined in the rules of the CFTC): either (1) the aggregate initial margin and premiums required to establish the Funds’ positions in commodity interests may not exceed 5% of the

19

liquidation value of the Funds’ portfolio (after taking into account unrealized profits and unrealized losses on any such positions); or (2) the aggregate net notional value of the Funds’ commodity interest positions, determined at the time the most recent such position was established, may not exceed the liquidation value of the Funds’ portfolio (after taking into account unrealized profits and unrealized losses on any such positions). In addition to meeting one of these trading limitations, the Funds may not market themselves as commodity pools or otherwise as a vehicles for trading in the commodity futures, commodity options or swaps markets. If, in the future, a Fund can no longer satisfy these requirements, Invesco would withdraw its notice claiming an exclusion from the definition of a CPO, and Invesco would be subject to registration and regulation as a CPO with respect to the Fund in accordance with the CFTC rules that allow for substituted compliance with CFTC disclosure and shareholder reporting requirements based on Invesco’s compliance and comparable SEC requirements. However, as a result of CFTC regulation with respect to the Fund, the Fund may incur additional compliance and other expenses.

General risks associated with derivatives:

The use by Funds of derivatives may involve certain risks, as described below.

Counterparty Risk : The risk that the counterparty under a derivatives agreement will not live up to its obligations, including because of the counterparty’s bankruptcy or insolvency. Certain agreements may not contemplate delivery of collateral to support fully a counterparty’s contractual obligations; therefore, a Fund might need to rely on contractual remedies to satisfy the counterparty’s full obligation. As with any contractual remedy, there is no guarantee that a Fund will be successful in pursuing such remedies, particularly in the event of the counterparty’s bankruptcy. The agreement may allow for netting of the counterparty’s obligations with respect to a specific transaction, in which case a Fund’s obligation or right will be the net amount owed to or by the counterparty. The Fund will not enter into a derivative transaction with any counterparty that Invesco and/or the Sub-Advisers believe does not have the financial resources to honor its obligations under the transaction. Invesco monitors the financial stability of counterparties. Where the obligations of the counterparty are guaranteed, Invesco monitors the financial stability of the guarantor instead of the counterparty. If a counterparty’s credit worthiness declines, the value of the derivative would also likely decline, potentially resulting in losses to a Fund.

A Fund will not enter into a transaction with any single counterparty if the net amount owed or to be received under existing transactions under the agreements with that counterparty would exceed 5% of the Fund’s net assets determined on the date the transaction is entered into or as otherwise permitted by law.

Leverage Risk : Leverage exists when a Fund can lose more than it originally invests because it purchases or sells an instrument or enters into a transaction without investing an amount equal to the full economic exposure of the instrument or transaction. A Fund segregates or earmarks assets or otherwise covers transactions that may give rise to leverage. Leverage may cause a Fund to be more volatile because it may exaggerate the effect of any increase or decrease in the value of the Fund’s portfolio securities. The use of some derivatives may result in economic leverage, which does not result in the possibility of a Fund incurring obligations beyond its initial investment, but that nonetheless permits the Fund to gain exposure that is greater than would be the case in an unlevered instrument. The Funds do not segregate or otherwise cover investments in derivatives with economic leverage.

Liquidity Risk : The risk that a particular derivative is difficult to sell or liquidate. If a derivative transaction is particularly large or if the relevant market is illiquid, it may not be possible to initiate a transaction or liquidate a position at an advantageous time or price, which may result in significant losses to the Fund.

Pricing Risk : The risk that the value of a particular derivative does not move in tandem or as otherwise expected relative to the corresponding underlying instruments.

Risks of Potential Increased Regulation of Derivatives : The regulation of derivatives is a rapidly changing area of law and is subject to modification by government and judicial action. In addition, the

20

SEC, CFTC and the exchanges are authorized to take extraordinary actions in the event of a market emergency, including, for example, the implementation or reduction of speculative position limits, the implementation of higher margin requirements, the establishment of daily price limits and the suspension of trading.

It is not possible to predict fully the effects of current or future regulation. However, it is possible that developments in government regulation of various types of derivative instruments, such as speculative position limits on certain types of derivatives, or limits or restrictions on the counterparties with which the Funds engage in derivative transactions, may limit or prevent a Fund from using or limit a Fund’s use of these instruments effectively as a part of its investment strategy, and could adversely affect a Fund’s ability to achieve its investment objective. Invesco will continue to monitor developments in the area, particularly to the extent regulatory changes affect a Fund’s ability to enter into desired swap agreements. New requirements, even if not directly applicable to a Fund, may increase the cost of a Fund’s investments and cost of doing business.

Regulatory Risk : The risk that a change in laws or regulations will materially impact a security or market.

Tax Risks : For a discussion of the tax considerations relating to derivative transactions, see “Dividends, Distributions and Tax Matters – Tax Matters – Tax Treatment of Portfolio Transactions.”

General risks of hedging strategies using derivatives:

The use by the Funds of hedging strategies involves special considerations and risks, as described below.

Successful use of hedging transactions depends upon Invesco’s and the Sub-Advisers’ ability to predict correctly the direction of changes in the value of the applicable markets and securities, contracts and/or currencies. While Invesco and the Sub-Advisers are experienced in the use of derivatives for hedging, there can be no assurance that any particular hedging strategy will succeed.

In a hedging transaction, there might be imperfect correlation, or even no correlation, between the price movements of an instrument used for hedging and the price movements of the investments being hedged. Such a lack of correlation might occur due to factors unrelated to the value of the investments being hedged, such as changing interest rates, market liquidity, and speculative or other pressures on the markets in which the hedging instrument is traded.

Hedging strategies, if successful, can reduce risk of loss by wholly or partially offsetting the negative effect of unfavorable price movements in the investments being hedged. However, hedging strategies can also reduce opportunity for gain by offsetting the positive effect of favorable price movements in the hedged investments. Investors should bear in mind that no Fund is obligated to actively engage in hedging. For example, a Fund may not have attempted to hedge its exposure to a particular foreign currency at a time when doing so might have avoided a loss.

Types of derivatives:

Swaps. Each Fund may engage in certain strategies involving swaps to attempt to manage the risk of their investments or, in certain circumstances, for investment purposes (e.g., as a substitute for investing in securities). All Funds may enter into swap agreements.

Generally, swap agreements are contracts between a Fund and another party (the counterparty) involving the exchange of payments on specified terms over periods ranging from a few days to multiple years. A swap agreement may be negotiated bilaterally and traded OTC between the two parties (for an uncleared swap) or, in some instances, must be transacted through a futures commission merchant (FCM) and cleared through a clearing house that serves as a central counterparty (for a cleared swap). In a basic swap transaction, the Fund agrees with its counterparty to exchange the returns (or differentials

21

in returns) and/or cash flows earned or realized on a particular asset such as an equity or debt security, commodity, currency, interest rate or index, calculated with respect to a “notional amount.” The notional amount is the set amount selected by the parties to use as the basis on which to calculate the obligations that the parties to a swap agreement have agreed to exchange. The parties typically do not exchange the notional amount. Instead, they agree to exchange the returns that would be earned or realized if the notional amount were invested in given investments or at given interest rates. Examples of returns that may be exchanged in a swap agreement are those of a particular security, a particular fixed or variable interest rate, a particular foreign currency, or a “basket” of securities representing a particular index. Swap agreements can also be based on credit and other events. In some cases, such as cross currency swaps, the swap agreement may require delivery (exchange) of the entire notional value of one designated currency for another designated currency.

New swaps regulation . The Dodd-Frank Act and related regulatory developments have imposed comprehensive new regulatory requirements on swaps and swap market participants. The new regulatory framework includes: (1) registration and regulation of swap dealers and major swap participants; (2) requiring central clearing and execution of standardized swaps; (3) imposing margin requirements in swap transactions; (4) regulating and monitoring swap transactions through position limits and large trader reporting requirements; and (5) imposing record keeping and centralized and public reporting requirements, on an anonymous basis, for most swaps. The CFTC is responsible for the regulation of most swaps, and has completed most of its rules implementing the Dodd-Frank Act swap regulations. The SEC has jurisdiction over a small segment of the market referred to as “security-based swaps,” which includes swaps on single securities or credits, or narrow-based indices of securities or credits, but has not yet completed its rulemaking.

Uncleared swaps. In an uncleared swap, the swap counterparty is typically a brokerage firm, bank or other financial institution. In the event that one party to the swap transaction defaults, and the transaction is terminated prior to its scheduled termination date, one of the parties may be required to make an early termination payment to the other. An early termination payment may be payable by either the defaulting party or the non-defaulting party, under certain circumstances depending upon which of them is “in-the-money” with respect to the swap at the time of termination. Early termination payments may be calculated in various ways, but generally represent the amount that the “in-the-money” party would have to pay to replace the swap as of the date of its termination.

During the term of an uncleared swap, a Fund is usually required to pledge to the swap counterparty, from time to time, an amount of cash and/or other assets equal to the total net amount (if any) that would be payable by the Fund to the counterparty if the swap were terminated on the date in question, including any early termination payments. Periodically, changes in the amount pledged are made to recognize changes in value of the contract resulting from, among other things, interest on the notional value of the contract, market value changes in the underlying investment, and/or dividends paid by the issuer of the underlying instrument. Likewise, the counterparty may be required to pledge cash or other assets to cover its obligations to a Fund. However, the amount pledged may not always be equal to or more than the amount due to the other party. Therefore, if a counterparty defaults in its obligations to a Fund, the amount pledged by the counterparty and available to the Fund may not be sufficient to cover all the amounts due to the Fund and the Fund may sustain a loss.

Currently, the Funds do not typically provide initial margin in connection with uncleared swaps. However, rules requiring both initial and variation margin to be posted by certain market participants for uncleared swaps have been adopted and will become effective as to various market participants over time. When these rules take effect with respect to the Funds, they may be required to post both initial margin and variation margin.

Uncleared swaps are not traded on exchanges. As a result, swap participants may not be as protected as participants on organized exchanges. Performance of a swap agreement is the responsibility only of the swap counterparty and not of any exchange or clearinghouse. As a result, a Fund is subject to the risk that a counterparty will be unable or will refuse to perform under such agreement, including because of the counterparty’s bankruptcy or insolvency. The Fund risks the loss of the accrued but

22

unpaid amounts under a swap agreement, which could be substantial, in the event of a default, insolvency or bankruptcy by a swap counterparty. In such an event, the Fund will have contractual remedies pursuant to the swap agreements, but bankruptcy and insolvency laws could affect the Fund’s rights as a creditor. If the counterparty’s creditworthiness declines, the value of a swap agreement would likely decline, potentially resulting in losses.

Cleared Swaps. Certain standardized swaps are subject to mandatory central clearing and exchange trading. Central clearing is intended to reduce counterparty credit risk and increase liquidity, but central clearing does not eliminate these risks and may involve additional costs and risks not involved with uncleared swaps. The Dodd-Frank Act and related regulatory developments will ultimately require the clearing and exchange-trading of many swaps. Mandatory exchange-trading and clearing will occur on a phased-in basis based on the type of market participant and CFTC approval of contracts for central clearing and public trading facilities making such cleared swaps available to trade. To date, the CFTC has designated only certain of the most common credit default index swaps and certain interest rate swaps as subject to mandatory clearing and certain public trading facilities have made these swaps available to trade, but it is expected that additional categories of swaps will in the future be designated as subject to mandatory clearing and trade execution requirements.

In a cleared swap, a Fund’s ultimate counterparty is a central clearinghouse rather than a brokerage firm, bank or other financial institution. Cleared swaps are submitted for clearing through each party’s FCM, which must be a member of the clearinghouse that serves as the central counterparty.

When a Fund enters into a cleared swap, it must deliver to the central counterparty (via the FCM) an amount referred to as “initial margin.” Initial margin requirements are determined by the central counterparty and are typically calculated as an amount equal to the volatility in market value of the cleared swap over a fixed period, but an FCM may require additional initial margin above the amount required by the central counterparty. During the term of the swap agreement, a “variation margin” amount may also be required to be paid by the Fund or may be received by the Fund in accordance with margin controls set for such accounts. If the value of the Fund’s cleared swap declines, the Fund will be required to make additional “variation margin” payments to the FCM to settle the change in value. Conversely, if the market value of the Fund’s position increases, the FCM will post additional “variation margin” to the Fund’s account. At the conclusion of the term of the swap agreement, if the Fund has a loss equal to or greater than the margin amount, the margin amount is paid to the FCM along with any loss in excess of the margin amount. If the Fund has a loss of less than the margin amount, the excess margin is returned to the Fund. If the Fund has a gain, the full margin amount and the amount of the gain is paid to the Fund.

Central clearing is designed to reduce counterparty credit risk and increase liquidity compared to uncleared swaps because central clearing interposes the central clearinghouse as the counterparty to each participant’s swap, but it does not eliminate those risks completely. There is also a risk of loss by a Fund of the initial and variation margin deposits in the event of bankruptcy of the FCM with which the Fund has an open position, or the central counter party in a swap contract. The assets of a Fund may not be fully protected in the event of the bankruptcy of the FCM or central counterparty because the Fund might be limited to recovering only a pro rata share of all available funds and margin segregated on behalf of an FCM’s customers. If the FCM does not provide accurate reporting, a Fund is also subject to the risk that the FCM could use the Fund’s assets, which are held in an omnibus account with assets belonging to the FCM’s other customers, to satisfy its own financial obligations or the payment obligations of another customer to the central counterparty. Credit risk of cleared swap participants is concentrated in a few clearinghouses, and the consequences of insolvency of a clearinghouse are not clear.

With cleared swaps, a Fund may not be able to obtain as favorable terms as it would be able to negotiate for a bilateral, uncleared swap. In addition, an FCM may unilaterally amend the terms of its agreement with a Fund, which may include the imposition of position limits or additional margin requirements with respect to the Fund’s investment in certain types of swaps. Central counterparties and FCMs can require termination of existing cleared swap transactions upon the occurrence of certain events, and can also require increases in margin above the margin that is required at the initiation of the swap agreement. Currently, depending on a number of factors, the margin required under the rules of the

23

clearinghouse and FCM may be in excess of the collateral required to be posted by a Fund to support its obligations under a similar uncleared swap. However, as noted above, regulators have adopted rules imposing margin requirements on uncleared swaps, which are likely to impose higher margin requirements.

Finally, a Fund is subject to the risk that, after entering into a cleared swap with an executing broker, no FCM or central counterparty is willing or able to clear the transaction. In such an event, the Fund may be required to break the trade and make an early termination payment to the executing broker.

CFTC rules require the trading and execution of cleared swaps on public trading facilities, which will occur for each category of cleared swaps once one or more trading facilities become accredited and make such category of swaps available to trade. Moving trading to an exchange-type system may increase market transparency and liquidity but may require the Fund to incur increased expenses to access the same types of swaps that it has used in the past. In addition, clearance of swaps may not immediately produce the expected benefits and could, in fact, decrease liquidity until the market becomes comfortable with the clearing process.

Commonly used swap agreements include:

Credit Default Swaps (CDS) : A CDS is an agreement between two parties where the first party agrees to make one or more payments to the second party, while the second party assumes the risk of certain defaults, generally a failure to pay or bankruptcy of the issuer on a referenced debt obligation. CDS transactions are typically individually negotiated and structured. A Fund may enter into CDS to create long or short exposure to domestic or foreign corporate debt securities or sovereign debt securities.

A Fund may buy a CDS (buy credit protection). In this transaction the Fund makes a stream of payments based on a fixed interest rate (the premium) over the life of the swap in exchange for a counterparty (the seller) taking on the risk of default of a referenced debt obligation (the Reference Obligation). If a credit event occurs for the Reference Obligation, the Fund would cease making premium payments and it would deliver defaulted bonds to the seller. In return, the seller would pay the notional value of the Reference Obligation to the Fund. Alternatively, the two counterparties may agree to cash settlement in which the seller delivers to the Fund (buyer) the difference between the market value and the notional value of the Reference Obligation. If no event of default occurs, the Fund pays the fixed premium to the seller for the life of the contract, and no other exchange occurs.

Alternatively, a Fund may sell a CDS (sell credit protection). In this transaction the Fund will receive premium payments from the buyer in exchange for taking the risk of default of the Reference Obligation. If a credit event occurs for the Reference Obligation, the buyer would cease to make premium payments to the Fund and deliver the Reference Obligation to the Fund. In return, the Fund would pay the notional value of the Reference Obligation to the buyer. Alternatively, the two counterparties may agree to cash settlement in which the Fund would pay the buyer the difference between the market value and the notional value of the Reference Obligation. If no event of default occurs, the Fund receives the premium payments over the life of the contract, and no other exchange occurs.

Credit Default Index Swaps (CDX) . A CDX is a swap on an index of CDS. A CDX allows an investor to manage credit risk or to take a position on a basket of credit entities (such as CDS or CMBS) in a more efficient manner than transacting in single name CDS. If a credit event occurs in one of the underlying companies, the protection is paid out via the delivery of the defaulted bond by the buyer of protection in return for payment of the notional value of the defaulted bond by the seller of protection or it may be settled through a cash settlement between the two parties. The underlying company is then removed from the index. New series of CDX are issued on a regular basis. A Commercial Mortgage-Backed Index (CMBX) is a type of CDX made up of 25 tranches of commercial mortgage-backed securities (See “Debt Instruments – Mortgage-Backed and Asset-Backed Securities”) rather than CDS. Unlike other CDX contracts where credit events are intended to capture an event of default. CMBX involves a pay-as-you-go (PAUG) settlement process designed to capture non-default events that affect

24

the cash flow of the reference obligation. PAUG involves ongoing, two-way payments over the life of a contract between the buyer and the seller of protection and is designed to closely mirror the cash flow of a portfolio of cash commercial mortgage-backed securities.

Foreign Exchange Swaps: A foreign exchange swap involves an agreement between two parties to exchange two different currencies on a specific date at a fixed rate, and an agreement for the reverse exchange of those two currencies at a later date and at a fixed rate. Foreign exchange swaps were exempted from the definition of “swaps” by the U.S. Treasury and are therefore not subject to many rules under the CEA that apply to swaps, including the mandatory clearing requirement. They are also not considered “commodity interests” for purposes of CEA Regulation and Exclusions , discussed above. However, foreign exchange swaps nevertheless remain subject to the CFTC’s trade reporting requirements, enhanced anti-evasion authority, and strengthened business conduct standards.

Currency Swaps: A currency swap is an agreement between two parties to exchange periodic cash flows on a notional amount of two or more currencies based on the relative value differential between them. Currency swaps typically involve the delivery of the entire notional values of the two designated currencies. In such a situation, the full notional value of a currency swap is subject to the risk that the other party to the swap will default on its contractual delivery obligations. A Fund may also enter into currency swaps on a net basis, which means the two different currency payment streams under the swap agreement are converted and netted out to a single cash payment in just one of the currencies.

Because currency control is of great importance to the issuing governments and influences economic planning and policy, purchases and sales of currency and related instruments can be negatively affected by government exchange controls, blockages, and manipulations or exchange restrictions imposed by governments. These actions could result in losses to a Fund if it is unable to deliver or receive a specified currency or funds in settlement of obligations, including swap transaction obligations. These actions could also have an adverse effect on a Fund’s swap transactions or cause a Fund’s hedging positions to be rendered useless, resulting in full currency exposure as well as incurring unnecessary transaction costs.

Interest Rate Swaps: An agreement between two parties pursuant to which the parties exchange a floating rate payment for a fixed rate payment based on a specified principal or notional amount. In other words, Party A agrees to pay Party B a fixed interest rate multiplied by a notional amount and in return Party B agrees to pay Party A a variable interest rate multiplied by the same notional amount.

Commodity Swaps: A commodity swap agreement is a contract in which one party agrees to make periodic payments to another party based on the change in market value of a commodity-based underlying instrument (such as a specific commodity or commodity index) in return for periodic payments based on a fixed or variable interest rate or the total return from another commodity-based underlying instrument. In a total return commodity swap, a Fund receives the price appreciation of a commodity index, a portion of a commodity index or a single commodity in exchange for paying an agreed-upon fee.

Total Return Swaps: An agreement in which one party makes payments based on a set rate, either fixed or variable, while the other party makes payments based on the return of an underlying asset, which includes both the income it generates and any capital gains.

Volatility and Variance Swaps : A volatility swap involves an exchange between a Fund and a counterparty of periodic payments based on the measured volatility of an underlying security, currency, commodity, interest rate, index or other reference asset over a specified time frame. Depending on the structure of the swap, either the Fund’s or the counterparty’s payment obligation will typically be based on the realized volatility of the reference asset as measured by changes in its price or level over a specified time period while the other party’s payment obligation will be based on a specified rate representing expected volatility for the reference asset at the time the swap is executed, or the measured volatility of a different reference asset over a specified time period. The Fund will typically make or lose money on a volatility swap depending on the magnitude of the reference asset’s volatility, or size of the movements in its price, over a specified time period, rather than general increases or decreases in the price of the

25

reference asset. Volatility swaps are often used to speculate on future volatility levels, to trade the spread between realized and expected volatility, or to decrease the volatility exposure of other investments held by the Fund. Variance swaps are similar to volatility swaps except payments are based on the difference between the implied and measured volatility mathematically squared.

Inflation swaps : Inflation swap agreements are contacts in which one party agrees to pay the cumulative percentage increase in a price index, such as the Customer Price Index, over the term of the swap (with some lag on the referenced inflation index), and the other party pays a compounded fixed rate. Inflation swap agreements may be used to protect the net asset value of the Fund against an unexpected change in the rate of inflation measured by an inflation index. The value of inflation swap agreements is expected to change in response to changes in real interest rates. Real interest rates are tied to the relationship between nominal interest rates and the rate if inflation.

Options. Each Fund may engage in certain strategies involving options to attempt to manage the risk of its investments or,in certain circumstances, for investment purposes (e.g., as a substitute for investing in securities). All Funds may invest in options.

An option is a contract that gives the purchaser of the option, in return for the premium paid, the right, but not the obligation, to buy from (in the case of a call) or sell to (in the case of a put) the writer of the option at the exercise price during the term of the option (for American style options or on a specified date for European style options), the security, currency or other instrument underlying the option (or delivery of a cash settlement price, in the case of certain options, such as an index option and other cash-settled options). An option on a CDS or a futures contract (described below) gives the purchaser the right, but not the obligation, to enter into a CDS or assume a position in a futures contract.

Option transactions present the possibility of large amounts of exposure (or leverage), which may result in a Fund’s net asset value being more sensitive to changes in the value of the option.

The value of an option position will reflect, among other things, the current market value of the underlying investment, the time remaining until expiration, the relationship of the exercise price to the market price of the underlying investment, the price volatility of the underlying investment and general market and interest rate conditions.

A Fund may effectively terminate its right or obligation under an option by entering into an offsetting closing transaction. For example, a Fund may terminate its obligation under a call or put option that it had written by purchasing an identical call or put option, which is known as a closing purchase transaction. Conversely, a Fund may terminate a position in a put or call option it had purchased by writing an identical put or call option, which is known as a closing sale transaction. Closing transactions permit a Fund to realize profits or limit losses on an option position prior to its exercise or expiration.

Options may be either listed on an exchange or traded in OTC markets. Listed options are tri-party contracts (i.e., performance of the obligations of the purchaser and seller are guaranteed by the exchange or clearing corporation) and have standardized strike prices and expiration dates. OTC options are two-party contracts with negotiated strike prices and expiration dates and differ from exchange-traded options in that OTC options are transacted with dealers directly and not through a clearing corporation (which guarantees performance). In the case of OTC options, there can be no assurance that a liquid secondary market will exist for any particular option at any specific time; therefore the Fund may be required to treat some or all OTC options as illiquid securities. Although a Fund will enter into OTC options only with dealers that are expected to be capable of entering into closing transactions with it, there is no assurance that the Fund will in fact be able to close out an OTC option position at a favorable price prior to exercise or expiration. In the event of insolvency of the dealer, a Fund might be unable to close out an OTC option position at any time prior to its expiration.

Types of Options:

26

Put Options on Securities: A put option gives the purchaser the right to sell, to the writer, the underlying security, contract or foreign currency at the stated exercise price at any time prior to the expiration date of the option for American style options or on a specified date for European style options, regardless of the market price or exchange rate of the security, contract or foreign currency, as the case may be, at the time of exercise. If the purchaser exercises the put option, the writer of a put option is obligated to buy the underlying security, contract or foreign currency for the exercise price.

Call Options on Securities: A call option gives the purchaser the right to buy, from the writer, the underlying security, contract or foreign currency at the stated exercise price at any time prior to the expiration of the option (for American style options) or on a specified date (for European style options), regardless of the market price or exchange rate of the security, contract or foreign currency, as the case may be, at the time of exercise. If the purchaser exercises the call option, the writer of a call option is obligated to sell to and deliver the underlying security, contract or foreign currency to the purchaser of the call option for the exercise price.

Index Options: Index options (or options on securities indices) give the holder the right to receive, upon exercise, cash instead of securities, if the closing level of the securities index upon which the option is based is greater than, in the case of a call, or less than, in the case of a put, the exercise price of the option. The amount of cash is equal to the difference between the closing price of the index and the exercise price of the call or put times a specified multiple (the multiplier), which determines the total dollar value for each point of such difference.

The risks of investment in index options may be greater than options on securities. Because index options are settled in cash, when a Fund writes a call on an index it cannot provide in advance for its potential settlement obligations by acquiring and holding the underlying securities. A Fund can offset some of the risk of writing a call index option by holding a diversified portfolio of securities similar to those on which the underlying index is based. However, the Fund cannot, as a practical matter, acquire and hold a portfolio containing exactly the same securities that underlie the index and, as a result, bears the risk that the value of the securities held will not be perfectly correlated with the value of the index.

CDS Options: A CDS option transaction gives the buyer the right, but not the obligation, to enter into a CDS at specified future dates and under specified terms in exchange for a purchase price or premium. The writer of the option bears the risk of any unfavorable move in the value of the CDS relative to the market value on the exercise date, while the purchaser may allow the option to expire unexercised.

Swaptions: An option on a swap agreement, also called a “swaption,” is an option that gives the buyer the right, but not the obligation, to enter into a swap on a future date in exchange for paying a market based “premium.” A receiver swaption gives the owner the right to receive the total return of a specified asset, reference rate, or index. A payer swaption gives the owner the right to pay the total return of a specified asset, reference rate, or index. Swaptions also include options that allow an existing swap to be terminated or extended by one of the counterparties.

Option Techniques:

Writing Options: A Fund may write options to generate additional income and to seek to hedge its portfolio against market or exchange rate movements. As the writer of an option, the Fund may have no control over when the underlying instruments must be sold (in the case of a call option) or purchased (in the case of a put option) because the option purchaser may notify the Fund of exercise at any time prior to the expiration of the option (for American style options). In general, options are rarely exercised prior to expiration. Whether or not an option expires unexercised, the writer retains the amount of the premium.

A Fund would write a put option at an exercise price that, reduced by the premium received on the option, reflects the price it is willing to pay for the underlying security, contract or currency. In return for the premium received for writing a put option, the Fund assumes the risk that the price of the

27

underlying security, contract, or foreign currency will decline below the exercise price, in which case the put would be exercised and the Fund would suffer a loss.

In return for the premium received for writing a call option on a security the Fund holds, the Fund foregoes the opportunity for profit from a price increase in the underlying security, contract, or foreign currency above the exercise price so long as the option remains open, but retains the risk of loss should the price of the security, contract, or foreign currency decline.

If an option that a Fund has written expires, the Fund will realize a gain in the amount of the premium; however, such gain may be offset by a decline in the market value of the underlying security, contract or currency, held by the Fund during the option period. If a call option is exercised, a Fund will realize a gain or loss from the sale of the underlying security, contract or currency, which will be increased or offset by the premium received. The obligation imposed upon the writer of an option is terminated upon the expiration of the option, or such earlier time at which a Fund effects a closing purchase transaction by purchasing an option (put or call as the case may be) identical to that previously sold.

Purchasing Options.

A Fund may only purchase a put option on an underlying security, contract or currency owned by the Fund in order to protect against an anticipated decline in the value of the security, contract or currency held by the Fund; or purchase put options on underlying securities, contracts or currencies against which it has written other put options. The premium paid for the put option and any transaction costs would reduce any profit realized when the security, contract or currency is delivered upon the exercise of the put option. Conversely, if the underlying security, contract or currency does not decline in value, the option may expire worthless and the premium paid for the protective put would be lost.

A Fund may purchase a call option for the purpose of acquiring the underlying security, contract or currency for its portfolio, or on underlying securities, contracts or currencies against which it has written other call options. The Fund is not required to own the underlying security in order to purchase a call option. If the Fund does not own the underlying position, the purchase of a call option would enable a Fund to acquire the security, contract or currency at the exercise price of the call option plus the premium paid. So long as it holds a call option, rather than the underlying security, contract or currency itself, the Fund is partially protected from any unexpected increase in the market price of the underlying security, contract or currency. If the market price does not exceed the exercise price, the Fund could purchase the security on the open market and could allow the call option to expire, incurring a loss only to the extent of the premium paid for the option.

Straddles/Spreads/Collars. Each Fund, for hedging purposes, may enter into straddles, spreads or collars to adjust the risk and return characteristics of the Funds’ overall position.

Spread and straddle options transactions. In “spread” transactions, a Fund buys and writes a put or buys and writes a call on the same underlying instrument with the options having different exercise prices, expiration dates, or both. In “straddles,” a Fund purchases a put option and a call option or writes a put option and a call option on the same instrument with the same expiration date and typically the same exercise price. When a Fund engages in spread and straddle transactions, it seeks to profit from differences in the option premiums paid and received and in the market prices of the related options positions when they are closed out or sold. Because these transactions require the Fund to buy and/or write more than one option simultaneously, the Fund’s ability to enter into such transactions and to liquidate its positions when necessary or deemed advisable may be more limited than if the Fund were to buy or sell a single option. Similarly, costs incurred by the Fund in connection with these transactions will in many cases be greater than if the Fund were to buy or sell a single option.

Option Collars. A Fund also may use option “collars.” A “collar” position combines a put option purchased by the Fund (the right of the Fund to sell a specific security within a specified period) with a call option that is written by the Fund (the right of the counterparty to buy the same security) in a single instrument. The Fund’s right to sell the security is typically set at a price that is below the counterparty’s

28

right to buy the security. Thus, the combined position “collars” the performance of the underlying security, providing protection from depreciation below the price specified in the put option, and allowing for participation in any appreciation up to the price specified by the call option.

Warrants. Each Fund may purchase warrants.

A warrant gives the holder the right to purchase securities from the issuer at a specific price within a certain time frame and is similar to a call option. The main difference between warrants and call options is that warrants are issued by the company that will issue the underlying security, whereas options are not issued by the company; Young, unseasoned companies often issue warrants to finance their operations.

Rights.  Rights are equity securities representing a preemptive right of stockholders to purchase additional shares of a stock at the time of a new issuance, before the stock is offered to the general public. A stockholder who purchases rights may be able to retain the same ownership percentage after the new stock offering. A right usually enables the stockholder to purchase common stock at a price below the initial offering price. A Fund that purchases a right takes the risk that the right might expire worthless because the market value of the common stock falls below the price fixed by the right.

Futures Contracts. Each Fund may purchase future contracts.

A futures contract is a standard binding agreement to buy or sell a specified amount of a specified security ,currency or commodity (or delivery of a cash settlement price, in the case of certain futures such as an index future or Eurodollar Future) for a specified price at a designated date, time and place (collectively, futures contracts). A “sale” of a futures contract means the acquisition of a contractual obligation to deliver the underlying instrument or asset called for by the contract at a specified price on a specified date. A “purchase” of a futures contract means the acquisition of a contractual obligation to acquire the underlying instrument or asset called for by the contract at a specified price on a specified date.

The Funds will only enter into futures contracts that are traded (either domestically or internationally) on futures exchanges or certain exempt markets, including exempt boards of trade and electronic trading facilities and are standardized as to maturity date and underlying financial instrument. Futures exchanges and trading thereon in the United States are regulated under the CEA and by the CFTC. Foreign futures exchanges, exempt markets, and trading thereon are not regulated by the CFTC and are not subject to the same regulatory controls. In addition, futures contracts that are traded on non-U.S. exchanges or exempt markets may not be as liquid as those purchased on CFTC-designated contract markets. For a further discussion of the risks associated with investments in foreign securities, see “Foreign Investments” above.

Brokerage fees are incurred when a futures contract is bought or sold, and margin deposits must be maintained at all times when a futures contract is outstanding. “Margin” for a Futures Contract is the amount of funds that must be deposited by a Fund in order to initiate futures contracts trading and maintain its open positions in futures contracts. A margin deposit made when the futures contract is entered (initial margin) is intended to ensure the Fund’s performance under the futures contract. The margin required for a particular futures contract is set by the exchange on which the futures contract is traded and may be significantly modified from time to time by the exchange during the term of the futures contract.

Subsequent payments, called “variation margin,” received from or paid to the FCM through which a Fund enters into the futures contract will be made on a daily basis as the futures price fluctuates making the futures contract more or less valuable, a process known as marking-to-market. When the futures contract is closed out, if the Fund has a loss equal to or greater than the margin amount, the margin amount is paid to the FCM along with any loss in excess of the margin amount. If the Fund has a loss of less than the margin amount, the excess margin is returned to the Fund. If the Fund has a gain, the full

29

margin amount and the amount of the gain is paid to the Fund and the FCM pays the Fund any excess gain over the margin amount.

There is a risk of loss by a Fund of the initial and variation margin deposits in the event of bankruptcy of the FCM with which the Fund has an open position in a futures contract. The assets of a Fund may not be fully protected in the event of the bankruptcy of the FCM or central counterparty because the Fund might be limited to recovering only a pro rata share of all available funds and margin segregated on behalf of an FCM’s customers. If the FCM does not provide accurate reporting, a Fund is also subject to the risk that the FCM could use the Fund’s assets, which are held in an omnibus account with assets belonging to the FCM’s other customers, to satisfy its own financial obligations or the payment obligations of another customer to the central counterparty.

Closing out an open futures contract is effected by entering into an offsetting futures contract for the same aggregate amount of the identical financial instrument or currency and the same delivery date. There can be no assurance, however, that a Fund will be able to enter into an offsetting transaction with respect to a particular futures contract at a particular time. If a Fund is not able to enter into an offsetting transaction, it will continue to be required to maintain the margin deposits on the futures contract.

In addition, if a Fund were unable to liquidate a futures contract or an option on a futures contract position due to the absence of a liquid secondary market or the imposition of price limits, it could incur substantial losses. The Fund would continue to be subject to market risk with respect to the position. In addition, except in the case of purchased options, the Fund would continue to be required to make daily variation margin payments.

Types of Futures Contracts:

Commodity Futures: A commodity futures contract is an exchange-traded contract to buy or sell a particular commodity at a specified price at some time in the future. Commodity futures contracts are highly volatile; therefore, the prices of a Fund’s shares may be subject to greater volatility to the extent it invests in commodity futures.

Currency Futures: A currency futures contract is a standardized, exchange-traded contract to buy or sell a particular currency at a specified price at a future date (commonly three months or more). Currency futures contracts may be highly volatile and thus result in substantial gains or losses to the Fund.

A Fund may either exchange the currencies specified at the maturity of a currency futures contract or, prior to maturity, enter into a closing transaction involving the purchase or sale of an offsetting contract. A Fund may also enter into currency futures contracts that do not provide for physical settlement of the two currencies but instead are settled by a single cash payment calculated as the difference between the agreed upon exchange rate and the spot rate at settlement based upon an agreed upon notional amount. Closing transactions with respect to currency futures contracts are usually effected with the counterparty to the original currency futures contract.

Index Futures: A stock index futures contract is an exchange-traded contract that provides for the delivery, at a designated date, time and place, of an amount of cash equal to a specified dollar amount times the difference between the stock index value at the close of trading on the date specified in the contract and the price agreed upon in the futures contract; no physical delivery of stocks comprising the index is made.

Dividend Futures : A dividend futures contract is an exchange-traded contract to purchase or sell an amount equal to the total dividends paid by a selected security, basket of securities or index, over a period of time for a specified price that is based on the expected dividend payments from the selected security, basket of securities or index.

30

Interest Rate Futures: An interest-rate futures contract is an exchange-traded contract in which the specified underlying security is either an interest-bearing fixed income security or an inter-bank deposit. Two examples of common interest rate futures contracts are U.S. Treasury futures and Eurodollar futures contracts. The specified security for U.S. Treasury futures is a U.S. Treasury security. The specified security for Eurodollar futures is the London Interbank Offered Rate (Libor) which is a daily reference rate based on the interest rates at which banks offer to lend unsecured funds to other banks in the London wholesale money market.

Security Futures: A security futures contract is an exchange-traded contract to purchase or sell, in the future, a specified quantity of a security (other than a Treasury security, or a narrow-based securities index) at a certain price.

Options on Futures Contracts . Options on futures contracts are similar to options on securities or currencies except that options on futures contracts give the purchaser the right, in return for the premium paid, to assume a position in a futures contract (a long position if the option is a call and a short position if the option is a put) at a specified exercise price at any time during the period of the option. Upon exercise of the option, the delivery of the futures contract position by the writer of the option to the holder of the option will be accompanied by delivery of the accumulated balance in the writer’s futures contract margin account.

Pursuant to federal securities laws and regulations, the Fund’s use of futures contracts and options on futures contracts may require the Fund to set aside assets to reduce the risks associated with using futures contracts and options on futures contracts. This process is described in more detail above in the section “Derivatives.”

Forward Foreign Currency Contracts. Each of the Funds may enter into forward foreign currency contracts to hedge against adverse movements in the foreign currencies in which portfolio securities are denominated.

A forward foreign currency contract is an obligation to buy or sell a particular currency in exchange for another currency, which may be U.S. dollars, at a specified price at a future date. Forward foreign currency contracts are typically individually negotiated and privately traded by currency traders and their customers in the interbank market. A Fund may enter into forward foreign currency contracts with respect to a specific purchase or sale of a security, or with respect to its portfolio positions generally.

At the maturity of a forward foreign currency contract, a Fund may either exchange the currencies specified at the maturity of the contract or, prior to maturity, a Fund may enter into a closing transaction involving the purchase or sale of an offsetting contract. Closing transactions with respect to forward foreign currency contracts are usually effected with the counterparty to the original forward contract. A Fund may also enter into forward foreign currency contracts that do not provide for physical settlement of the two currencies but instead provide for settlement by a single cash payment calculated as the difference between the agreed upon exchange rate and the spot rate at settlement based upon an agreed upon notional amount (non-deliverable forwards).

The Funds will comply with guidelines established by the SEC with respect to “cover” requirements of forward foreign currency contracts (See Derivatives above). Generally, with respect to forward foreign currency contracts that are not contractually required to “cash-settle” (i.e., are deliverable), a Fund covers its open positions by setting aside liquid assets equal to the contracts’ full notional value.

Under definitions adopted by the CFTC and SEC, non-deliverable forwards are considered swaps, and therefore are included in the definition of “commodity interests.” Although non-deliverable forwards have historically been traded in the OTC market, as swaps they may in the future be required to be centrally cleared and traded on public facilities. For more information on central clearing and trading of cleared swaps, see “Swaps” and “Risks of Potential Increased Regulation of Swaps and Other Derivatives.” Forward foreign currency contracts that qualify as deliverable forwards are not regulated as swaps for most purposes, and are not included in the definition of “commodity interests.” However these

31

forwards are subject to some requirements applicable to swaps, including reporting to swap data repositories, documentation requirements, and business conduct rules applicable to swap dealers. CFTC regulation of forward foreign currency contracts, especially non-deliverable forwards, may restrict a Fund’s ability to use these instruments in the manner described above or subject Invesco to CFTC registration and regulation as a CPO.

The cost to a Fund of engaging in forward foreign currency contracts varies with factors such as the currencies involved, the length of the contract period, interest rate differentials and the prevailing market conditions. Because forward foreign currency contracts are usually entered into on a principal basis, no fees or commissions are typically involved. The use of forward foreign currency contracts does not eliminate fluctuations in the prices of the underlying securities a Fund owns or intends to acquire, but it does establish a rate of exchange in advance. While forward foreign currency contract sales limit the risk of loss due to a decline in the value of the hedged currencies, they also limit any potential gain that might result should the value of the currencies increase.

Receipt of Issuer’s Nonpublic Information

The Adviser or Sub-Advisers (through their portfolio managers, analysts, or other representatives) may receive material nonpublic information about an issuer that may restrict the ability of the Adviser or Sub-Advisers to cause the Funds to buy or sell securities of the issuer on behalf of the Funds for substantial periods of time. This may impact the Funds’ ability to realize profit or avoid loss with respect to the issuer and may adversely affect the Funds’ flexibility with respect to buying or selling securities, potentially impacting Fund performance. For example, activist investors or certain issuers in which the Adviser or Sub-Advisers hold large positions may contact representatives of the Adviser or Sub-Advisers and may disclose material nonpublic information in such communication. The Advisers or Sub-Advisers would be restricted from trading on the basis of such material nonpublic information, limiting their flexibility in managing the Funds and possibly impacting Fund performance.

Cybersecurity Risk

The Funds, like all companies, may be susceptible to operational and information security risks. Cybersecurity failures or breaches of the Funds or their service providers or the issuers of securities in which the Funds invest, have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, and/or additional compliance costs. The Funds and their shareholders could be negatively impacted as a result.

Fund Policies

Fundamental Restrictions. Except as otherwise noted below, each Fund is subject to the following investment restrictions, which may be changed only by a vote of such Fund’s outstanding shares. Fundamental restrictions may be changed only by a vote of the lesser of (i) 67% or more of the Fund’s shares present at a meeting if the holders of more than 50% of the outstanding shares are present in person or represented by proxy, or (ii) more than 50% of the Fund’s outstanding shares. Any investment restriction that involves a maximum or minimum percentage of securities or assets (other than with respect to borrowing) shall not be considered to be violated unless an excess over or a deficiency under the percentage occurs immediately after, and is caused by, an acquisition or disposition of securities or utilization of assets by the Fund.

(1) The Fund is a “diversified company” as defined in the 1940 Act. The Fund will not purchase the securities of any issuer if, as a result, the Fund would fail to be a diversified company within the meaning of the 1940 Act, and the rules and regulations promulgated thereunder, as such statute, rules and regulations are amended from time to time or are interpreted from time to time by the SEC staff (collectively, the “1940 Act Laws and Interpretations”) or except to the extent that the Fund may be permitted to do so by exemptive order or similar relief (collectively, with the 1940 Act Laws and

32

Interpretations, the “1940 Act Laws, Interpretations and Exemptions”). In complying with this restriction, however, the Fund may purchase securities of other investment companies to the extent permitted by the 1940 Act Laws, Interpretations and Exemptions.

(2) The Fund may not borrow money or issue senior securities, except as permitted by the 1940 Act Laws, Interpretations and Exemptions.

(3) The Fund may not underwrite the securities of other issuers. This restriction does not prevent the Fund from engaging in transactions involving the acquisition, disposition or resale of its portfolio securities, regardless of whether the Fund may be considered to be an underwriter under the 1933 Act.

(4) The Fund will not make investments that will result in the concentration (as that term may be defined or interpreted by the 1940 Act Laws, Interpretations and Exemptions) of its investments in the securities of issuers primarily engaged in the same industry. This restriction does not limit the Fund’s investments in (i) obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities, or (ii) tax-exempt obligations issued by governments or political subdivisions of governments. In complying with this restriction, the Fund will not consider a bank-issued guaranty or financial guaranty insurance as a separate security.

(5) The Fund may not purchase real estate or sell real estate unless acquired as a result of ownership of securities or other instruments. This restriction does not prevent the Fund from investing in issuers that invest, deal, or otherwise engage in transactions in real estate or interests therein, or investing in securities that are secured by real estate or interests therein.

(6) The Fund may not purchase physical commodities or sell physical commodities unless acquired as a result of ownership of securities or other instruments. This restriction does not prevent the Fund from engaging in transactions involving futures contracts and options thereon or investing in securities that are secured by physical commodities.

(7) The Fund may not make personal loans or loans of its assets to persons who control or are under common control with the Fund, except to the extent permitted by 1940 Act Laws, Interpretations and Exemptions. This restriction does not prevent the Fund from, among other things, purchasing debt obligations, entering into repurchase agreements, loaning its assets to broker-dealers or institutional investors, or investing in loans, including assignments and participation interests.

(8) The Fund (except for Invesco Summit Fund) may, notwithstanding any other fundamental investment policy or limitation, invest all of its assets in the securities of a single open-end management investment company with substantially the same fundamental investment objectives, policies and restrictions as the Fund.

The investment restrictions set forth above provide each of the Funds with the ability to operate under new interpretations of the 1940 Act or pursuant to exemptive relief from the SEC without receiving prior shareholder approval of the change. Even though each of the Funds has this flexibility, the Board has adopted non-fundamental restrictions for each of the Funds relating to certain of these restrictions which Invesco and, when applicable, the Sub-Advisers must follow in managing the Funds. Any changes to these non-fundamental restrictions, which are set forth below, require the approval of the Board.

Non-Fundamental Restrictions. Non-fundamental restrictions may be changed for any Fund without shareholder approval. The non-fundamental investment restrictions listed below apply to each of the Funds unless otherwise indicated.

(1) In complying with the fundamental restriction regarding issuer diversification, the Fund will not, with respect to 75% of its total assets, purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities and securities issued by other investment companies), if, as a result, (i) more than 5% of the Fund’s total assets would

33

be invested in the securities of that issuer, or (ii) the Fund would hold more than 10% of the outstanding voting securities of that issuer. The Fund may purchase securities of other investment companies as permitted by the 1940 Act Laws, Interpretations and Exemptions.

In complying with the fundamental restriction regarding issuer diversification, any Fund that invests in municipal securities will regard each state (including the District of Columbia and Puerto Rico), territory and possession of the United States, each political subdivision, agency, instrumentality and authority thereof, and each multi-state agency of which a state is a member as a separate “issuer.” When the assets and revenues of an agency, authority, instrumentality or other political subdivision are separate from the government creating the subdivision and the security is backed only by assets and revenues of the subdivision, such subdivision would be deemed to be the sole issuer. Similarly, in the case of an Industrial Development Bond or Private Activity bond, if that bond is backed only by the assets and revenues of the non-governmental user, then that non-governmental user would be deemed to be the sole issuer. However, if the creating government or another entity guarantees a security, then to the extent that the value of all securities issued or guaranteed by that government or entity and owned by a Fund exceeds 10% of the Fund’s total assets, the guarantee would be considered a separate security and would be treated as issued by that government or entity. Securities issued or guaranteed by a bank or subject to financial guaranty insurance are not subject to the limitations set forth in the preceding sentence.

(2) In complying with the fundamental restriction regarding borrowing money and issuing senior securities, the Fund may borrow money in an amount not exceeding 33 1/3% of its total assets (including the amount borrowed) less liabilities (other than borrowings).

(3) In complying with the fundamental restriction regarding industry concentration, the Fund may invest up to 25% of its total assets in the securities of issuers whose principal business activities are in the same industry.

(4) Notwithstanding the fundamental restriction with regard to engaging in transactions involving futures contracts and options thereon or investing in securities that are secured by physical commodities, the Fund currently may not invest in any security (including futures contracts or options thereon) that is secured by physical commodities.

The Funds do not consider currencies or other financial commodities or contracts and financial instruments to be physical commodities (which include, for example, oil, precious metals and grains). Accordingly, the Funds will interpret the fundamental restriction and the related non-fundamental restriction to permit the Funds, subject to each Fund’s investment objectives and general investment policies (as stated in the Funds’ prospectuses and herein), to invest directly in foreign currencies and other financial commodities and to purchase, sell or enter into commodity futures contracts and options thereon, forward foreign currency contracts, foreign currency options, currency-, commodity- and financial instrument-related swap agreements, hybrid instruments, interest rate or securities-related or foreign currency-related hedging instruments or other currency-, commodity- or financial instrument-related derivatives, subject to compliance with any applicable provisions of the federal securities or commodities laws. The Funds will interpret fundamental restriction regarding the purchase and sale of physical commodities and the related non-fundamental restriction to permit the Funds to invest in ETFs, registered investment companies and other pooled investment vehicles that invest in physical and/or financial commodities, subject to the limits described in the Funds’ prospectuses and herein.

(5) In complying with the fundamental restriction with regard to making loans, the Fund may lend up to 33 1/3% of its total assets and may lend money to an Invesco Fund, on such terms and conditions as the SEC may require in an exemptive order.

(6) Notwithstanding the fundamental restriction with regard to investing all assets in an open-end fund, the Fund (except for Invesco Summit Fund) may not invest all of its assets in the securities of a single open-end management investment company with the same fundamental investment objectives, policies and restrictions as the Fund.

34

(7) The Fund may not acquire any securities of registered open-end investment companies or registered unit investment trusts in reliance on Sections 12(d)(1)(F) or 12(d)(1)(G) of the 1940 Act.

If a percentage restriction on the investment or use of assets set forth in the Prospectus or this SAI is adhered to at the time a transaction is effected, later changes in percentage resulting from changing asset values will not be considered a violation. It is the intention of the Fund, unless otherwise indicated, that with respect to the Fund’s policies that are a result of application of law, the Fund will take advantage of the flexibility provided by rules or interpretations of the SEC currently in existence or promulgated in the future, or changes to such laws.

For purposes of the foregoing, “assets” means net assets, plus the amount of any borrowings for investment purposes. The Fund will provide written notice to its shareholders prior to any change to this policy, as required by the 1940 Act Laws, Interpretations and Exemptions.

Policies and Procedures for Disclosure of Fund Holdings

The Board has adopted policies and procedures with respect to the disclosure of the Funds’ portfolio holdings (the Holdings Disclosure Policy). Invesco and the Board may amend the Holdings Disclosure Policy at any time without prior notice. Details of the Holdings Disclosure Policy and a description of the basis on which employees of Invesco and its affiliates may release information about portfolio securities in certain contexts are provided below.

Public release of portfolio holdings. The Funds disclose the following holdings information on www.invesco.com/us ¹ :

35

These holdings are listed along with the percentage of the Fund’s net assets they represent. Generally, employees of Invesco and its affiliates may not disclose such portfolio holdings until one day after they have been posted on www.invesco.com/us . You may also obtain the publicly available portfolio holdings information described above by contacting us at 1-800-959-4246.

Selective disclosure of portfolio holdings pursuant to non-disclosure agreement . Employees of Invesco and its affiliates may disclose non-public full portfolio holdings on a selective basis only if Invesco’s U.S. Executive Management Committee (EMC) approves the parties to whom disclosure of non-public full portfolio holdings will be made. The EMC must determine that the proposed selective disclosure will be made for legitimate business purposes of the applicable Fund and is in the best interest of the applicable Fund’s shareholders. In making such determination, the EMC will address any perceived conflicts of interest between shareholders of such Fund and Invesco or its affiliates as part of granting its approval.

The Board exercises continuing oversight of the disclosure of Fund portfolio holdings by (1) overseeing the implementation and enforcement of the Holdings Disclosure Policy and the Invesco Funds Code of Ethics by the Chief Compliance Officer (or his designee) of Invesco and the Invesco Funds and (2) considering reports and recommendations by the Chief Compliance Officer concerning any material compliance matters (as defined in Rule 38a-1 under the 1940 Act and Rule 206(4)-7 under the Investment Advisers Act of 1940, as amended (Advisers Act)) that may arise in connection with the Holdings Disclosure Policy. Pursuant to the Holdings Disclosure Policy, the Board reviews the types of situations in which Invesco provides such selective disclosure and approves situations involving perceived conflicts of interest between shareholders of the applicable Fund and Invesco or its affiliates brought to the Board’s attention by Invesco.

Invesco discloses non-public full portfolio holdings information to the following persons in connection with the day-to-day operations and management of the Invesco Funds:

In many cases, Invesco will disclose current portfolio holdings on a daily basis to these persons. In these situations, Invesco has entered into non-disclosure agreements which provide that the recipient of the portfolio holdings will maintain the confidentiality of such portfolio holdings and will not trade on such information (Non-disclosure Agreements). Please refer to Appendix B for a list of examples of persons to whom Invesco provides non-public portfolio holdings on an ongoing basis.

Invesco will also disclose non-public portfolio holdings information if such disclosure is required by applicable laws, rules or regulations, or by regulatory authorities having jurisdiction over Invesco and its affiliates or the Invesco Funds.

The Holdings Disclosure Policy provides that Invesco will not request, receive or accept any compensation (including compensation in the form of the maintenance of assets in any Fund or other

36

mutual fund or account managed by Invesco or one of its affiliates) for the selective disclosure of portfolio holdings information.

Disclosure of certain portfolio holdings and related information without non-disclosure agreement. Invesco and its affiliates that provide services to the Funds, the Sub-Advisors and each of their employees may receive or have access to portfolio holdings as part of the day to day operations of the Funds.

From time to time, employees of Invesco and its affiliates may express their views orally or in writing on one or more of the Funds’ portfolio securities or may state that a Fund has recently purchased or sold, or continues to own, one or more securities. The securities subject to these views and statements may be ones that were purchased or sold since a Fund’s most recent quarter-end and therefore may not be reflected on the list of the Fund’s most recent quarter-end portfolio holdings disclosed on the website. Such views and statements may be made to various persons, including members of the press, brokers and other financial intermediaries that sell shares of the Funds, shareholders in the applicable Fund, persons considering investing in the applicable Fund or representatives of such shareholders or potential shareholders, such as fiduciaries of a 401(k) plan or a trust and their advisers, and other entities for which Invesco or its affiliates provides or may provide investment advisory services. The nature and content of the views and statements provided to each of these persons may differ.

From time to time, employees of Invesco and its affiliates also may provide oral or written information (portfolio commentary) about a Fund, including, but not limited to, how the Fund’s investments are divided among various sectors, industries, countries, investment styles and capitalization sizes, and among stocks, bonds, currencies and cash, security types, bond maturities, bond coupons and bond credit quality ratings. This portfolio commentary may also include information on how these various weightings and factors contributed to Fund performance. Invesco may also provide oral or written information (statistical information) about various financial characteristics of a Fund or its underlying portfolio securities including, but not limited to, alpha, beta, R-squared, coefficient of determination, duration, maturity, information ratio, sharpe ratio, earnings growth, payout ratio, price/book value, projected earnings growth, return on equity, standard deviation, tracking error, weighted average quality, market capitalization, percent debt to equity, price to cash flow, dividend yield or growth, default rate, portfolio turnover, and risk and style characteristics. This portfolio commentary and statistical information about a Fund may be based on the Fund’s portfolio as of the most recent quarter-end or the end of some other interim period, such as month-end. The portfolio commentary and statistical information may be provided to various persons, including those described in the preceding paragraph. The nature and content of the information provided to each of these persons may differ.

Disclosure of portfolio holdings by traders. Additionally, employees of Invesco and its affiliates may disclose one or more of the portfolio securities of a Fund when purchasing and selling securities through broker-dealers, requesting bids on securities, obtaining price quotations on securities, or in connection with litigation involving the Funds’ portfolio securities. Invesco does not enter into formal Non-disclosure Agreements in connection with these situations; however, the Funds would not continue to conduct business with a person who Invesco believed was misusing the disclosed information.

Disclosure of portfolio holdings of other Invesco-managed products. Invesco and its affiliates manage products sponsored by companies other than Invesco, including investment companies, offshore funds, and separate accounts. In many cases, these other products are managed in a similar fashion to certain Invesco Funds and thus have similar portfolio holdings. The sponsors of these other products managed by Invesco and its affiliates may disclose the portfolio holdings of their products at different times than Invesco discloses portfolio holdings for the Invesco Funds.

Invesco provides portfolio holdings information for portfolios of AIM Variable Insurance Funds (Invesco Variable Insurance Funds) (the Insurance Funds) to insurance companies whose variable annuity and variable life insurance accounts invest in the Insurance Funds (Insurance Companies). Invesco may disclose portfolio holdings information for the Insurance Funds to Insurance Companies with

37

which Invesco has entered into Non-disclosure Agreements up to five days prior to the scheduled dates for Invesco’s disclosure of similar portfolio holdings information for other Invesco Funds on www.invesco.com/us . Invesco provides portfolio holdings information for the Insurance Funds to such Insurance Companies to allow them to disclose this information on their websites at approximately the same time that Invesco discloses portfolio holdings information for the other Invesco Funds on its web site. Invesco manages the Insurance Funds in a similar fashion to certain other Invesco Funds and thus the Insurance Funds and such other Invesco Funds have similar portfolio holdings. Invesco does not disclose the portfolio holdings information for the Insurance Funds on its web site, and not all Insurance Companies disclose this information on their web sites.