I nvestment 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 Fund, 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 the Fund’s Prospectus; where a particular type of security or

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investment technique is not discussed in the Fund’s Prospectus, that security or investment technique is not a principal investment strategy.

Unless otherwise indicated, the Fund may invest in all of the following types of investments. The 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 Fund, including those that do not specifically mention the Fund as investing in the security or using the investment technique, as well as securities and techniques not described. The Fund’s transactions in a particular type of security or use of a particular technique is subject to limitations imposed by the Fund’s investment objective, policies and restrictions described in the Fund’s Prospectus and/or this SAI, as well as the federal securities laws.

Any percentage limitations relating to the composition of the Fund’s portfolio identified in the Fund’s prospectus or this SAI apply at the time the Fund acquires an investment. Subsequent changes that result from market fluctuations generally will not require the Fund to sell any portfolio security. However, the Fund may be required to sell its illiquid securities holdings, or reduce it borrowings, if any, in response to fluctuations in the value of such holdings.

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

Equity Investments

The Fund may invest in all of the following types of equity investments:

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. The 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.

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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 the 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 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 the 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 the 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.

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Alternative Entity Securities . The Fund 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. The 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), Global Depositary Receipts (GDRs) 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. GDRs are bank certificates issued in more than one country for shares in a foreign company. The shares are held by a foreign branch of an international bank. GDRs trade as domestic shares but are offered for sale globally through the various bank branches. GDRs are typically used by private markets to raise capital denominated in either U.S. dollars or foreign currencies. EDRs are similar to ADRs and GDRs, 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 the 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 where 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 is one where 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 Fund considers 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 in a particular region/continent; (2) it has a principal office in a country or in a particular region/continent; (3) it derives 50% or more of its total revenues from businesses in a country or 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 particular region/continent.

Investments by the 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 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 Fund 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

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taxation, and limitations on the removal of funds or other assets could also adversely affect the value of the Fund’s 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 Fund may be reduced by a withholding tax at the source, which tax would reduce dividend income payable to the Fund’s 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 the 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. The Fund may invest in securities of companies located in developing and emerging markets countries. Unless the Fund’s prospectus includes a different definition, the Fund considers developing and emerging markets countries to be those countries that are not included in the MSCI World Index. The Fund considers developed countries of the European Union to be Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden and the United Kingdom.

Investments in developing and 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:

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Foreign Government Obligations . The 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 . The Fund may invest in foreign currency denominated securities. The Fund 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”). Because forward foreign currency contracts and currency-related swap contracts are privately negotiated transactions, there can be no assurance that a counterparty will honor its obligations.

The Fund 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.

The Fund will generally engage in foreign exchange transactions in order to complete a purchase or sale of foreign currency denominated securities The Fund 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. The Fund may also engage in foreign exchange transactions, such as forward foreign currency contracts, for non-hedging purposes to enhance returns. 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.

The Fund may purchase and sell foreign currency futures and purchase and write foreign currency options to increase or decrease its exposure to different foreign currencies. The Fund may 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 exchange contracts except that they are traded on exchanges and have standard contract sizes and delivery dates. Most foreign currency futures contracts call for payment or delivery in U.S. dollars. The uses and risks of foreign currency futures are similar to those of futures 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.

Whether or not any hedging strategy will be successful is highly uncertain, and use of hedging strategies may leave the 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, the 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.

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The Fund may hold a portion of its 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.”

The Commodity Futures Trading Commission (CFTC) and the U.S. Securities and Exchange Commission (SEC) have recently defined many OTC derivative instruments, including non-deliverable foreign exchange forwards and OTC foreign exchange options, as “swaps.” Therefore, these instruments are now included in calculating a Fund’s derivatives exposure.

Floating Rate Corporate Loans and Corporate Debt Securities of Non-U.S. Borrowers. The Fund may invest in floating rate loans and floating rate debt securities that are made to non-U.S. borrowers, provided that the loans are U.S. dollar-denominated or otherwise provide for payment in U.S. dollars, and any such borrower meets the credit quality standards established by Invesco and the Sub-Advisers for U.S. borrowers. The Fund similarly may invest in floating rate loans and floating rate debt securities made to U.S. borrowers with significant non-U.S. dollar-denominated revenues; provided that the loans are U.S. dollar-denominated or otherwise provide for payment to the Fund in U.S. dollars. In all cases where the floating rate loans or floating rate debt securities are not denominated in U.S. dollars, provisions will be made for payments to the lenders, including the Fund, in U.S. dollars pursuant to foreign currency swaps.

Exchange-Traded Funds

Exchange-Traded Funds. The Fund may purchase shares of exchange-traded funds (ETFs). Most ETFs are registered under the 1940 Act as investment companies. Therefore, the 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. The Fund may invest in 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.

ETFs hold portfolios of securities, commodities and/or currencies that are designed to replicate, as closely as possible before expenses, the price and/or yield of (i) a specified market or other index, (ii) a basket of securities, commodities or currencies, or (iii) a particular commodity or currency. The performance results of ETFs will not replicate exactly the performance of the pertinent index, basket, commodity or currency 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 or basket or price of a commodity or currency. 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. Some ETFs are actively managed and instead of replicating, they see to outperform a particular index or basket or price of a commodity or currency. ETF shares are sold and redeemed at net asset value only in large blocks called creation units and redemption units, respectively. ETF shares also may be purchased and sold 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 commodity or currency, or in the types of

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securities, commodities and/or currencies included in the indices or baskets 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 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.

E xchange-Traded Notes

Exchange-Traded Notes . The Fund may invest in exchange-traded notes (ETNs). ETNs are senior, unsecured, unsubordinated debt securities whose returns are linked to the performance of a particular market benchmark or strategy, minus applicable fees. ETNs are traded on an exchange ( e.g. , the New York Stock Exchange) during normal trading hours; however, investors can also hold the ETN until maturity. At maturity, the issuer pays to the investor a cash amount equal to the principal amount, subject to the day’s market benchmark or strategy factor. ETNs do not make periodic coupon payments or provide principal protection. ETNs are subject to credit risk, including the credit risk of the issuer, and the value of the ETN may drop due to a downgrade in the issuer’s credit rating, despite the underlying market benchmark or strategy remaining unchanged. The value of an ETN may also be influenced by time to maturity, level of supply and demand for the ETN, volatility and lack of liquidity in underlying assets, changes in the applicable interest rates, changes in the issuer’s credit rating, and economic, legal, political, or geographic events that affect the referenced underlying asset. When the Fund invests in ETNs it will bear its proportionate share of any fees and expenses borne by the ETN. A decision by the Fund to sell ETN holdings may be limited by the availability of a secondary market. In addition, although an ETN may be listed on an exchange, the issuer may not be required to maintain the listing, and there can be no assurance that a secondary market will exist for an ETN.

ETNs are also subject to tax risk. No assurance can be given that the Internal Revenue Service (IRS) will accept, or a court will uphold, how the Fund characterizes and treats ETNs for tax purposes. Further, the IRS and Congress are considering proposals that would change the timing and character of income and gains from ETNs.

An ETN that is tied to a specific market benchmark or strategy may not be able to replicate and maintain exactly the composition and relative weighting of securities, commodities or other components in the applicable market benchmark or strategy. Some ETNs that use leverage can, at times, be relatively illiquid, and thus they may be difficult to purchase or sell at a fair price. Leveraged ETNs are subject to the same risk as other instruments that use leverage in any form.

The market value of ETNs may differ from their market benchmark or strategy. This difference in price may be due to the fact that the supply and demand in the market for ETNs at any point in time is not always identical to the supply and demand in the market for the securities, commodities or other components underlying the market benchmark or strategy that the ETN seeks to track. As a result, there may be times when an ETN trades at a premium or discount to its market benchmark or strategy.

Debt In vestments

The Fund may invest in high-grade short-term securities and debt securities including U.S. Government obligations and investment grade corporate bonds, whether denominated in U.S. dollars or foreign currencies.

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

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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, the 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 recently 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.

Inflation-Indexed Bonds . Inflation-indexed bonds are fixed income securities whose principal value is periodically adjusted according to the rate of inflation. Two structures are common. The U.S. Treasury and some other issuers use a structure that accrues inflation into the principal value of the bond. Most other issuers pay out the Consumer Price Index accruals as part of a semiannual coupon.

Inflation-indexed securities issued by the U.S. Treasury have maturities of five, ten or thirty years, although it is possible that securities with other maturities will be issued in the future. The U.S. Treasury securities pay interest on a semi-annual basis, equal to a fixed percentage of the inflation-adjusted principal amount. For example, if a fund purchased an inflation-indexed bond with a par value of $1,000 and a 3% real rate of return coupon (payable 1.5% semi-annually), and inflation over the first six months was 1%, the mid-year par value of the bond would be $1,010 and the first semi-annual interest payment would be $15.15 ($1,010 times 1.5%). If inflation during the second half of the year resulted in the whole years’ inflation equaling 3%, the end-of-year par value of the bond would be $1,030 and the second semiannual interest payment would be $15.45 ($1,030 times 1.5%).

If the periodic adjustment rate measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed bonds, even during a period of deflation. However, the current market value of the bonds is not guaranteed, and will fluctuate. The Fund may also invest in other inflation related bonds which may or may not provide a similar guarantee. If a guarantee of principal is not provided, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

The value of inflation-indexed bonds is expected to change in response to changes in real interest rates. Real interest rates in turn are tied to the relationship between nominal interest rates and the rate of inflation. Therefore, if inflation were to rise at a faster rate than nominal interest rates, real interest rates might decline, leading to an increase in value of inflation-indexed bonds. In contrast, if nominal interest rates increased at a faster rate than inflation, real interest rates might rise, leading to a decrease in value of inflation-indexed bonds.

While these securities are expected to be protected from long-term inflationary trends, short-term increases in inflation may lead to a decline in value. If interest rates rise due to reasons other than inflation (for example, due to changes in currency exchange rates), investors in these securities may not be protected to the extent that the increase is not reflected in the bond’s inflation measure.

The periodic adjustment of U.S. inflation-indexed bonds is tied to the Consumer Price Index for Urban Consumers (CPI-U), which is calculated monthly by the U.S. Bureau of Labor Statistics. The CPIU is a measurement of changes in the cost of living, made up of components such as housing, food,

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transportation and energy. Inflation-indexed bonds issued by a foreign government are generally adjusted to reflect a comparable inflation index, calculated by that government. There can be no assurance that the CPI-U or any foreign inflation index will accurately measure the real rate of inflation in the prices of goods and services. Moreover, there can be no assurance that the rate of inflation in a foreign country will be correlated to the rate of inflation in the United States.

Any increase in the principal amount of an inflation-indexed bond will be considered taxable ordinary income, even though investors do not receive their principal until maturity.

Temporary Investments . The Fund may invest a portion of its assets in affiliated money market funds or in the types of money market instruments in which the Fund would invest or other short-term U.S. government securities for cash management purposes. The 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. The 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 Government National Mortgage Association (GNMA) and government-related organizations such as 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, the 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 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.

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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.

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 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.

If the 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 prepayments 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.

Collateralized Mortgage Obligations (CMOs). The Fund may invest in CMOs. A CMO is a hybrid between a mortgage-backed bond and a mortgage pass-through security. A CMO is a type of mortgage-backed security that creates separate classes with varying maturities and interest rates, called tranches. Similar to a bond, interest and prepaid principal is paid, in most cases, semiannually. CMOs

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may be collateralized by whole mortgage loans, but are more typically collateralized by portfolios of mortgage pass-through securities guaranteed by GNMA, FHLMC, or FNMA, and their income streams.

CMOs are structured into multiple classes, each bearing a different fixed or floating interest rate and stated maturity. Actual maturity and average life will depend upon the prepayment experience of the collateral. CMOs provide for a modified form of call protection through a de facto breakdown of the underlying pool of mortgages according to how quickly the loans are repaid. Monthly payment of principal received from the pool of underlying mortgages, including prepayments, is first returned to investors holding the shortest maturity class. Investors holding the longer maturity classes receive principal only after the first class has been retired. An investor is partially guarded against a sooner than desired return of principal because of the sequential payments.

In a typical CMO transaction, a corporation (issuer) issues multiple series (e.g., Series A, B, C and Z) of CMO bonds (Bonds). Proceeds of the Bond offering are used to purchase mortgages or mortgage pass-through certificates (Collateral). The Collateral is pledged to a third party trustee as security for the Bonds. Principal and interest payments from the Collateral are used to pay principal on the Bonds in the following order: Series A, B, C and Z. The Series A, B, and C Bonds all bear current interest. Interest on a Series Z Bond is accrued and added to principal and a like amount is paid as principal on the Series A, B, or C Bond currently being paid off. Only after the Series A, B, and C Bonds are paid in full does the Series Z Bond begin to receive payment . With some CMOs, the issuer serves as a conduit to allow loan originators (primarily builders or savings and loan associations) to borrow against their loan portfolios.

CMOs that are issued or guaranteed by the U.S. Government or by any of its agencies or instrumentalities will be considered U.S. Government securities by the Fund, while other CMOs, even if collateralized by U.S. Government securities, will have the same status as other privately issued securities for purposes of applying the Fund’s diversification tests.

FHLMC CMOs are debt obligations of FHLMC issued in multiple classes having different maturity dates which are secured by the pledge of a pool of conventional mortgage loans purchased by FHLMC. Payments of principal and interest on the FHLMC CMOs are made semiannually. The amount of principal payable on each semiannual payment date is determined in accordance with FHLMC’s mandatory sinking fund schedule, which, in turn, is equal to approximately 100% of FHA prepayment experience applied to the mortgage collateral pool. All sinking fund payments in the FHLMC CMOs are allocated to the retirement of the individual classes of bonds in the order of their stated maturities. Payment of principal on the mortgage loans in the collateral pool in excess of the amount of FHLMC’s minimum sinking fund obligation for any payment date are paid to the holders of the FHLMC CMOs as additional sinking fund payments. Because of the “pass-through” nature of all principal payments received on the collateral pool in excess of FHLMC’s minimum sinking fund requirement, the rate at which principal of the FHLMC CMOs is actually repaid is likely to be such that each class of bonds will be retired in advance of its scheduled maturity date. If collection of principal (including prepayments) on the mortgage loans during any semiannual payment period is not sufficient to meet FHLMC CMO’s minimum sinking fund obligation on the next sinking fund payment date, FHLMC agrees to make up the deficiency from its general funds.

Classes of CMOs may also include interest only (IOs) and principal only (POs). IOs and POs are stripped mortgage-backed securities representing interests in a pool of mortgages the cash flow from which has been separated into interest and principal components. IOs (interest only securities) receive the interest portion of the cash flow while POs (principal only securities) receive the principal portion. IOs and POs can be extremely volatile in response to changes in interest rates. As interest rates rise and fall, the value of IOs tends to move in the same direction as interest rates. POs perform best when prepayments on the underlying mortgages rise since this increases the rate at which the investment is returned and the yield to maturity on the PO. When payments on mortgages underlying a PO are slow, the life of the PO is lengthened and the yield to maturity is reduced.

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CMOs are generally subject to the same risks as mortgage-backed securities. In addition, CMOs may be subject to credit risk because the issuer or credit enhancer has defaulted on its obligations and the Fund may not receive all or part of its principal. Obligations issued by U.S. Government-related entities are guaranteed as to the payment of principal and interest, but are not backed by the full faith and credit of the U.S. Government. The performance of private label mortgage-backed securities, issued by private institutions, is based on the financial health of those institutions. Although GNMA guarantees timely payment of GNMA certificates even if homeowners delay or default, tracking the “pass-through” payments may, at times, be difficult.

Collateralized Debt Obligations (CDOs). The Fund may invest in CDOs. A CDO is a security backed by a pool of bonds, loans and other debt obligations. CDOs are not limited to investing in one type of debt and accordingly, a CDO may own corporate bonds, commercial loans, asset-backed securities, residential mortgage-backed securities, commercial mortgage-backed securities, and emerging market debt. The CDO’s securities are typically divided into several classes, or bond tranches, that have differing levels of investment grade or credit tolerances. Most CDO issues are structured in a way that enables the senior bond classes and mezzanine classes to receive investment-grade credit ratings. Credit risk is shifted to the most junior class of securities. If any defaults occur in the assets backing a CDO, the senior bond classes are first in line to receive principal and interest payments, followed by the mezzanine classes and finally by the lowest rated (or non-rated) class, which is known as the equity tranche. Similar in structure to a collateralized mortgage obligation (described above) CDOs are unique in that they represent different types of debt and credit risk.

Collateralized Loan Obligations (CLOs). The Fund may invest in CLOs, which are debt instruments backed solely by a pool of other debt securities. The risks of an investment in a CLO depend largely on the type of the collateral securities and the class of the CLO in which the Fund invests. Some CLOs have credit ratings, but are typically issued in various classes with various priorities. Normally, CLOs are privately offered and sold (that is, they are not registered under the securities laws) and may be characterized by the Fund as illiquid securities; however, an active dealer market may exist for CLOs that qualify for Rule 144A transactions. In addition to the normal interest rate, default and other risks of fixed income securities, CLOs carry additional risks, including the possibility that distributions from collateral securities will not be adequate to make interest or other payments, the quality of the collateral may decline in value or default, the Fund may invest in CLOs that are subordinate to other classes, values may be volatile, and disputes with the issuer may produce unexpected investment results.

Credit Linked Notes (CLNs). The Fund may invest in CLNs. A CLN is a security with an embedded credit default swap allowing the issuer to transfer a specific credit risk to credit investors. CLNs are created through a Special Purpose Company (SPC), or trust, which is collateralized with AAA-rated securities. The CLN’s price or coupon is linked to the performance of the reference asset of the second party. Generally, the CLN holder receives either fixed or floating coupon rate during the life of the CLN and par at maturity. The cash flows are dependent on specified credit-related events. Should the second party default or declare bankruptcy, the CLN holder will receive an amount equivalent to the recovery rate. In return for these risks, the CLN holder receives a higher yield. The Fund bears the risk of default by the second party and any unforeseen movements in the reference asset, which could lead to loss of principal and receipt of interest payments. As with most derivative instruments, valuation of a CLN may be difficult due to the complexity of the security.

Bank Instruments. The Fund may invest in bank instruments. Bank instruments are unsecured interest bearing bank deposits. Bank instruments include, but are not limited to, certificates of deposit, 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

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over a definite period of time; however, it cannot be traded in the secondary market. A bankers’ 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.

Commercial Instruments. The Fund may invest in commercial instruments, including commercial paper, master notes and other short-term corporate instruments, that are denominated in U.S. dollars or foreign currencies.

Commercial instruments are a type of instrument issued by large banks and corporations to raise money to meet their short term debt obligations, and are only backed by the issuing bank or corporation’s promise to pay the face amount on the maturity date specified on the note. Commercial paper consists of short-term promissory notes issued by corporations. Commercial paper may be traded in the secondary market after its issuance. Master notes are demand notes that permit the investment of fluctuating amounts of money at varying rates of interest pursuant to arrangements with issuers who meet the credit quality criteria of the Fund. The interest rate on a master note may fluctuate based on changes in specified interest rates or may be reset periodically according to a prescribed formula or may be a set rate. Although there is no secondary market in master demand notes, if such notes have a demand feature, the payee may demand payment of the principal amount of the note upon relatively short notice. Master notes are generally illiquid and therefore subject to the Fund’s percentage limitations for investments in illiquid securities. Commercial instruments may not be registered with the U.S. Securities and Exchange Commission (SEC).

Synthetic Municipal Instruments. Synthetic municipal instruments are instruments, the value of and return on which, are derived from underlying securities. Synthetic municipal instruments in which the Fund may invest include tender option bonds, and fixed and variable rate trust certificates. These types of instruments involve the deposit into a trust or custodial account of one or more long-term tax-exempt bonds or notes (Underlying Bonds), and the sale of certificates evidencing interests in the trust or custodial account to investors such as the Fund. The trustee or custodian receives the long-term fixed rate interest payments on the Underlying Bonds, and pays certificate holders fixed rates or short-term floating or variable interest rates which are reset periodically. A “tender option bond” provides a certificate holder with the conditional right to sell its certificate to the sponsor or some designated third party at specified intervals and receive the par value of the certificate plus accrued interest (a demand feature). A “fixed rate trust certificate” evidences an interest in a trust entitling a certificate holder to fixed future interest and/or principal payments on the Underlying Bonds. A “variable rate trust certificate” evidences an interest in a trust entitling the certificate holder to receive variable rate interest based on prevailing short-term interest rates and also typically provides the certificate holder with the conditional demand feature the right to tender its certificate at par value plus accrued interest.

Typically, a certificate holder cannot exercise the demand feature until the occurrence of certain conditions, such as where the issuer of the Underlying Bond defaults on interest payments. Moreover, because synthetic municipal instruments involve a trust or custodial account and a third party conditional demand feature, they involve complexities and potential risks that may not be present where a municipal security is owned directly.

The tax-exempt character of the interest paid to certificate holders is based on the assumption that the holders have an ownership interest in the Underlying Bonds; however, the IRS has not issued a ruling addressing this issue. In the event the IRS issues an adverse ruling or successfully litigates this issue, it is possible that the interest paid to the Fund on certain synthetic municipal instruments would be deemed to be taxable. The Fund relies on opinions of special tax counsel on this ownership question and opinions of bond counsel regarding the tax-exempt character of interest paid on the Underlying Bonds.

Municipal Securities. “Municipal Securities” include debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies

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and instrumentalities, issued to obtain funds for various public purposes, including the construction of a wide range of public facilities such as airports, bridges, highways, housing, hospitals, mass transportation, schools, streets and water and sewer works. Other public purposes for which Municipal Securities may be issued include the refunding of outstanding obligations, obtaining funds for general operating expenses and lending such funds to other public institutions and facilities.

The principal and interest payments for industrial development bonds or pollution control bonds are often the sole responsibility of the industrial user and therefore may not be backed by the taxing power of the issuing municipality. The interest paid on such bonds may be exempt from federal income tax, although current federal tax laws place substantial limitations on the purposes and size of such issues. Such obligations are considered to be Municipal Securities provided that the interest paid thereon, in the opinion of bond counsel, qualifies as exempt from federal income tax. However, interest on Municipal Securities may give rise to a federal alternative minimum tax (AMT) liability and may have other collateral federal income tax consequences. Interest received by the Fund from tax-exempt Municipal Securities may be taxable to shareholders if the Fund fails to qualify to pay exempt-interest dividends by failing to satisfy the requirement that at the close of each quarter of the Fund’s taxable year at least 50% of the Fund’s total assets consists of Municipal Securities.

The two major classifications of Municipal Securities are bonds and notes. Bonds may be further classified as “general obligation” or “revenue” issues. General obligation bonds are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest. Revenue bonds are payable from the revenues derived from a particular facility or class of facilities, and in some cases, from the proceeds of a special excise or other specific revenue source, but not from the general taxing power. Tax-exempt industrial development bonds are in most cases revenue bonds and do not generally carry the pledge of the credit of the issuing municipality. Notes are short-term instruments which usually mature in less than two years. Most notes are general obligations of the issuing municipalities or agencies and are sold in anticipation of a bond sale, collection of taxes or receipt of other revenues.

Within these principal classifications of municipal securities, there are a variety of types of municipal securities, including but not limited to, inverse floating rate securities.

Inverse floating rate obligations are variable rate debt instruments that pay interest at rates that move in the opposite direction of prevailing interest rates. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases. The inverse floating rate obligations in which the Fund may invest include derivative instruments such as residual interest bonds, tender option bonds or municipal bond trust certificates. Such instruments are typically created by a special purpose trust that holds long-term fixed rate bonds and sells two classes of beneficial interests: short-term floating rate interests, which are sold to or held by third party investors, and inverse floating residual interests, which are purchased by the Fund. The short-term floating rate interests have first priority on the cash flow from the bond held by the special purpose trust and the Fund (as holder of the inverse floating residual interests) is paid the residual cash flow from the bond held by the special purpose trust. Like most other fixed-income securities, the value of inverse floating rate obligations will decrease as interest rates increase. They are more volatile, however, than most other fixed-income securities because the coupon rate on an inverse floating rate obligation typically changes at a multiple of the change in the relevant index rate. Thus, any rise in the index rate (as a consequence of an increase in interest rates) causes a correspondingly greater drop in the coupon rate of an inverse floating rate obligation while a drop in the index rate causes a correspondingly greater increase in the coupon of an inverse floating rate obligation. Some inverse floating rate obligations may also increase or decrease substantially because of changes in the rate of prepayments. Inverse floating rate obligations tend to underperform the market for fixed rate bonds in a rising interest rate environment, but tend to outperform the market for fixed rate bonds when interest rates decline or remain relatively stable. Inverse floating rate obligations have varying degrees of liquidity. The Fund generally invest in inverse floating rate obligations that include

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embedded leverage, thus exposing the Fund to greater risks and increased costs. The market value of “leveraged” inverse floating rate obligations generally will fluctuate in response to changes in market rates of interest to a greater extent than the value of an unleveraged investment. The extent of increases and decreases in the value of inverse floating rate obligations generally will be larger than changes in an equal principal amount of a fixed rate security having similar credit quality, redemption provisions and maturity, which may cause the Fund’s net asset value to be more volatile than if it had not invested in inverse floating rate obligations. In certain instances, the short-term floating rate interests created by a special purpose trust may not be able to be sold to third parties or, in the case of holders tendering (or putting) such interests for repayment of principal, may not be able to be remarketed to third parties. In such cases, the special purpose trust holding the long-term fixed rate bonds may be collapsed. In the case of inverse floating rate obligations created by the Fund, the Fund would then be required to repay the principal amount of the tendered securities. During times of market volatility, illiquidity or uncertainty, the Fund could be required to sell other portfolio holdings at a disadvantageous time to raise cash to meet that obligation. The use of short-term floating rate obligations may require the Fund to segregate or earmark cash or liquid assets to cover its obligations. Securities so segregated or earmarked will be unavailable for sale by the Fund (unless replaced by other securities qualifying for segregation requirements), which may limit the Fund’s flexibility and may require that the Fund sell other portfolio investments at a time when it may be disadvantageous to sell such assets.

Recently published final rules implementing section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (commonly known as the “Volcker Rule”) prohibit banking entities from engaging in proprietary trading of certain instruments and limit such entities’ investments in, and relationships with, “covered funds,” as defined in the rules. These rules may preclude banking entities from sponsoring and/or providing services for existing inverse floating rate obligation programs. There can be no assurances that these programs can be restructured substantially similar to their present form that new sponsors of inverse floating rate obligations would begin providing these services, or that alternative forms of leverage will be available to a Fund in order to maintain current levels of leverage. Any alternative forms of leverage may be less advantageous to a Fund and may adversely affect the Fund’s net asset value, distribution rate and ability to achieve its investment objective. The ultimate impact of these rules on the inverse floating rate obligation market and the municipal market generally is not yet certain.

Municipal Securities also include the following securities:

The Fund also may purchase participation interests or custodial receipts from financial institutions. These participation interests give the purchaser an undivided interest in one or more underlying Municipal Securities.

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After purchase by the Fund, an issue of Municipal Securities may cease to be rated by Moody’s Investors Service, Inc. (Moody’s) or Standard and Poor’s Ratings Services (S&P), or another nationally recognized statistical rating organization (NRSRO), or the rating of such a security may be reduced below the minimum credit quality rating required for purchase by the Fund. Neither event would require the Fund to dispose of the security.

The Fund may invest in Municipal Securities that are insured by financial insurance companies. Since a limited number of entities provide such insurance, the Fund may invest more than 25% of its assets in securities insured by the same insurance company. If the Fund invests in Municipal Securities backed by insurance companies and other financial institutions, changes in the financial condition of these institutions could cause losses to the Fund and affect share price.

The Fund may invest in Municipal Securities that are insured by financial insurance companies. Since a limited number of entities provide such insurance, the Fund may invest more than 25% of its assets in securities insured by the same insurance company.

The Fund may also invest in taxable municipal securities. Taxable municipal securities are debt securities issued by or on behalf of states and their political subdivisions, the District of Columbia, and possessions of the United States, the interest on which is not exempt from federal income tax.

The yields on Municipal Securities are dependent on a variety of factors, including general economic and monetary conditions, money market factors, conditions of the Municipal Securities market, size of a particular offering, and maturity and rating of the obligation. Because many Municipal Securities are issued to finance similar projects, especially those related to education, health care, transportation and various utilities, conditions in those sectors and the financial condition of an individual municipal issuer can affect the overall municipal market. The market values of the Municipal Securities held by the Fund will be affected by changes in the yields available on similar securities. If yields increase following the purchase of a Municipal Security, the market value of such Municipal Security will generally decrease. Conversely, if yields decrease, the market value of a Municipal Security will generally increase.

Investment Grade Debt Obligations. The 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 S&P or Baa3 or higher by Moody’s or an equivalent rating by another NRSRO, (ii) securities with comparable short-term NRSRO ratings, or (iii) unrated securities determined by the Adviser to be of comparable quality 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 the 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.

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Non-Investment Grade Debt Obligations (Junk Bonds). The Fund may invest in lower-rated or non-rated debt securities commonly known as junk bonds.

Bonds rated below investment grade (as defined above in “Investment Grade Debt Obligations”) are commonly known as “junk bonds.” Analysis of the creditworthiness of junk bond issuers is more complex than that of investment-grade issuers and the success of the Fund’s adviser in managing these decisions is more dependent upon its own credit analysis than is the case with investment-grade bonds. Descriptions of debt securities ratings are found in Appendix A.

The capacity of junk bonds to pay interest and repay principal is considered speculative. While junk bonds may provide an opportunity for greater income and gains, they are subject to greater risks than higher-rated debt securities. The prices of and yields on junk bonds may fluctuate to a greater extent than those of higher-rated debt securities. Junk bonds are generally more sensitive to individual issuer developments, economic conditions and regulatory changes than higher-rated bonds. Issuers of junk bonds are often smaller, less-seasoned companies or companies that are highly leveraged with more traditional methods of financing unavailable to them. Junk bonds are generally at a higher risk of default because such issues are often unsecured or otherwise subordinated to claims of the issuer’s other creditors. If a junk bond issuer defaults, the Fund may incur additional expenses to seek recovery. The secondary markets in which junk bonds are traded may be thin and less liquid than the market for higher-rated debt securities and the Fund may have difficulty selling certain junk bonds at the desired time and price. Less liquidity in secondary trading markets could adversely affect the price at which the Fund could sell a particular junk bond, and could cause large fluctuations in the net asset value of the Fund’s shares. The lack of a liquid secondary market may also make it more difficult for the Fund to obtain accurate market quotations in valuing junk bond assets and elements of judgment may play a greater role in the valuation.

Floating Rate Corporate Loans and Corporate Debt Securities. The Fund may invest in floating rate loans and corporate debt securities. Floating rate loans consist generally of obligations of companies and other entities (collectively, borrower) incurred for the purpose of reorganizing the assets and liabilities of a borrower; acquiring another company; taking over control of a company (leveraged buyout); temporary refinancing; or financing internal growth or other general business purposes. Floating rate loans are often obligations of borrowers who have incurred a significant percentage of debt compared to equity issued and thus are highly leveraged.

Floating rate loans may include both term loans, which are generally fully funded at the time of the Fund’s investment, and revolving loans, which may require the Fund to make additional investments in the loans as required under the terms of the loan agreement. A revolving credit loan agreement may require the Fund to increase its investment in a loan at a time when the Fund might not otherwise have done so, even if the borrower’s condition makes it unlikely that the loan will be repaid.

A floating rate loan is generally offered as part of a lending syndicate to banks and other financial institutions and is administered in accordance with the terms of the loan agreement by an agent bank who is responsible for collection of principal and interest and fee payments from the borrower and apportioning those payments to all lenders who are parties to the agreement. Typically, the agent is given broad discretion to enforce the loan agreement and is compensated by the borrower for its services.

Floating rate loans may be acquired by direct investment as a lender at the inception of the loan or by assignment of a portion of a floating rate loan previously made to a different lender or by purchase of a participation interest. If the Fund makes a direct investment in a loan as one of the lenders, it generally acquires the loan at par. This means the Fund receives a return at the full interest rate for the loan. If the Fund acquires its interest in loans in the secondary market or acquires a participation interest, the loans may be purchased or sold above, at, or below par, which can result in a yield that is below, equal to, or above the stated interest rate of the loan. At times, the Fund may be able to invest in floating rate loans only through assignments or participations.

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A participation interest represents a fractional interest in a floating rate loan held by the lender selling the Fund the participation interest. In the case of participations, the Fund will not have any direct contractual relationship with the borrower, the Fund’s rights to consent to modifications of the loan are limited and it is dependent upon the participating lender to enforce the Fund’s rights upon a default.

The Fund may be subject to the credit of both the agent and the lender from whom the Fund acquires a participation interest.

Historically, floating rate loans have not been registered with the SEC or any state securities commission or listed on any securities exchange. As a result, the amount of public information available about a specific floating rate loan has been historically less extensive than if the floating rate loan were registered or exchange traded.

Floating rate debt securities are typically in the form of notes or bonds issued in public or private placements in the securities markets. Floating rate debt securities will typically have substantially similar terms to floating rate loans, but will not be in the form of participations or assignments.

The floating rate loans and debt securities in which the Fund invests will, in most instances, be secured and senior to other indebtedness of the borrower. Each floating rate loan and debt security will generally be secured by collateral such as accounts receivable, inventory, equipment, real estate, intangible assets such as trademarks, copyrights and patents, and securities of subsidiaries or affiliates. The value of the collateral generally will be determined by reference to financial statements of the borrower, by an independent appraisal, by obtaining the market value of such collateral, in the case of cash or securities if readily ascertainable, or by other customary valuation techniques considered appropriate by Invesco and/or the Sub-Advisers. The value of collateral may decline after the Fund’s investment, and collateral may be difficult to sell in the event of default. Consequently, the Fund may not receive all the payments to which it is entitled. The Fund’s assets may be invested in unsecured floating rate loans and debt securities or subordinated floating rate loans and debt securities, which may or may not be secured. If the borrower defaults on an unsecured loan or security, there is no specific collateral on which the lender can foreclose. If the borrower defaults on a subordinated loan or security, the collateral may not be sufficient to cover both the senior and subordinated loans and securities.

Most borrowers pay their debts from cash flow generated by their businesses. If a borrower’s cash flow is insufficient to pay its debts, it may attempt to restructure its debts rather than sell collateral. Borrowers may try to restructure their debts by filing for protection under the federal bankruptcy laws or negotiating a work-out. If a borrower becomes involved in a bankruptcy proceeding, access to collateral may be limited by bankruptcy and other laws. If a court decides that access to collateral is limited or voidable, the Fund may not recover the full amount of principal and interest that is due.

A borrower must comply with certain restrictive covenants contained in the loan agreement or indenture (in the case of floating rate debt securities). In addition to requiring the scheduled payment of principal and interest, these covenants may include restrictions on the payment of dividends and other distributions to the borrower’s shareholders, provisions requiring compliance with specific financial ratios, and limits on total indebtedness. The agreement may also require the prepayment of the floating rate loans or debt securities from excess cash flow. A breach of a covenant that is not waived by the agent (or lenders directly) is normally an event of default, which provides the agent and lenders the right to call for repayment of the outstanding floating rate loan or debt security.

Purchasers of floating rate loans may receive and/or pay certain fees. These fees are in addition to interest payments and may include commitment fees, facility fees, and prepayment penalty fees. When the Fund buys a floating rate loan, it may receive a facility fee, and when it sells a floating rate loan, it may pay an assignment fee.

It is expected that the majority of floating rate loans and debt securities will have stated maturities of three to ten years. However, because floating rate loans and debt securities are frequently prepaid, it is

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expected that the average maturity will be three to five years. The degree to which borrowers prepay floating rate loans and debt securities, whether as a contractual requirement or at the borrower’s election, may be affected by general business conditions, the borrower’s financial condition and competitive conditions among lenders. Prepayments cannot be predicted with accuracy. Prepayments may result in the Fund’s investing in floating rate loans and debt securities with lower yields.

Investments in loans, loan participations and assignments present the possibility that the Fund could be held liable as a co-lender under emerging legal theories of lender liability. The Fund anticipates that loans, loan participations and assignments could be sold only to a limited number of institutional investors. If there is no active secondary market for a loan, it may be more difficult to sell the interests in such a loan at a price that is acceptable or to even obtain pricing information. In addition, some loans, loan participations and assignments may not be rated by major rating agencies and may not be protected by the securities laws.

Loans, Loan Participations and Assignments. The Fund may invest in loan participations or assignments.

Loans and loan participations are interests are interests in amounts owed by a corporate, governmental or other borrowers to another party. They may represent amounts owed to lenders or lending syndicates, to suppliers of goods or services, or to other parties. The Fund will have the right to receive payments of principal, interest and any fees to which it is entitled only from the lender selling the participation and only upon receipt by the lender of the payments from the borrower. In connection with purchasing participations, the Fund generally will have no right to enforce compliance by the borrower with the terms of the loan agreement relating to the loan, nor any rights of set-off against the borrower, and the Fund may not directly benefit from any collateral supporting the loan in which it has purchased the participation. As a result, the Fund will be subject to the credit risk of both the borrower and the lender that is selling the participation. In the event of the insolvency of the lender selling a participation, the Fund may be treated as a general creditor of the lender and may not benefit from any set-off between the lender and the borrower.

When the Fund purchases assignments from lenders, it acquires direct rights against the borrower on the loan. However, because assignments are arranged through private negotiations between potential assignees and potential assignors, the rights and obligations acquired by the Fund as the purchaser of an assignment may differ from, and be more limited than, those held by the assigning lender. In addition, if the loan is foreclosed, the Fund could be part owner of any collateral and could bear the costs and liabilities of owning and disposing of the collateral.

Investments in loans, loan participations and assignments present the possibility that the Fund could be held liable as a co-lender under emerging legal theories of lender liability. The Fund anticipates that loans, loan participations and assignments could be sold only to a limited number of institutional investors. If there is no active secondary market for a loan, it may be more difficult to sell the interests in such a loan at a price that is acceptable or to even obtain pricing information. In addition, some loans, loan participations and assignments may not be rated by major rating agencies and may not be protected by the securities laws.

Public Bank Loans . Public bank loans are privately negotiated loans for which information about the issuer has been made publicly available. Public loans are made by banks or other financial institutions, and may be rated investment grade (as defined above in “Investment Grade Debt Obligation”) or below investment grade. However, public bank loans are not registered under the Securities Act of 1933, as amended (the 1933 Act), and are not publicly traded. They usually are second lien loans normally lower in priority of payment to senior loans, but have seniority in a company’s capital structure to other claims, such as subordinated corporate bonds or publicly-issued equity so that in the event of bankruptcy or liquidation, the company is required to pay down these second lien loans prior to such other lower-ranked claims on their assets. Bank loans normally pay floating rates that reset frequently, and as a result, protect investors from increases in interest rates.

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Bank loans generally are negotiated between a borrower and several financial institutional lenders represented by one or more lenders acting as agent of all the lenders. The agent is responsible for negotiating the loan agreement that establishes the terms and conditions of the loan and the rights of the borrower and the lenders, monitoring any collateral, and collecting principal and interest on the loan. By investing in a loan, a Fund becomes a member of a syndicate of lenders. Certain bank loans are illiquid, meaning the Fund may not be able to sell them quickly at a fair price. Illiquid securities are also difficult to value. To the extent a bank loan has been deemed illiquid, it will be subject to a Fund’s restrictions on investment in illiquid securities. The secondary market for bank loans may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods.

Bank loans are subject to the risk of default. Default in the payment of interest or principal on a loan will result in a reduction of income to a Fund, a reduction in the value of the loan, and a potential decrease in the Fund’s net asset value. The risk of default will increase in the event of an economic downturn or a substantial increase in interest rates. Bank loans are subject to the risk that the cash flow of the borrower and property securing the loan or debt, if any, may be insufficient to meet scheduled payments. As discussed above, however, because bank loans reside higher in the capital structure than high yield bonds, default losses have been historically lower in the bank loan market. Bank loans that are rated below investment grade share the same risks of other below investment grade securities.

Structured Notes and Indexed Securities. The Fund may invest in structured notes or other indexed securities.

Structured notes are derivative debt instruments, the interest rate or principal of which is linked to currencies, interest rates, commodities, indices or other financial indicators (reference instruments). Indexed securities may include structured notes and other securities wherein the interest rate or principal are determined by a reference instrument.

Most structured notes and indexed securities are fixed-income securities that have maturities of three years or less. The interest rate or the principal amount payable at maturity of an indexed security may vary based on changes in one or more specified reference instruments, such as a floating interest rate compared with a fixed interest rate. The reference instrument need not be related to the terms of the indexed security. Structured notes and indexed securities may be positively or negatively indexed (i.e., their principal value or interest rates may increase or decrease if the underlying reference instrument appreciates), and may have return characteristics similar to direct investments in the underlying reference instrument or to one or more options on the underlying reference instrument.

Structured notes and indexed securities may entail a greater degree of market risk than other types of debt securities because the investor bears the risk of the reference instrument. Structured notes or indexed securities also may be more volatile, less liquid, and more difficult to accurately price than less complex securities and instruments or more traditional debt securities. In addition to the credit risk of the structured note or indexed security’s issuer and the normal risks of price changes in response to changes in interest rates, the principal amount of structured notes or indexed securities may decrease as a result of changes in the value of the underlying reference instruments. Further, in the case of certain structured notes or indexed securities in which the interest rate, or exchange rate in the case of currency, is linked to a referenced instrument, the rate may be increased or decreased or the terms may provide that, under certain circumstances, the principal amount payable on maturity may be reduced to zero resulting in a loss to the Fund.

U.S. Corporate Debt Obligations. Corporate debt obligations in which the Fund may invest are debt obligations issued or guaranteed by corporations that are denominated in U.S. dollars. Such investments may include, among others, commercial paper, bonds, notes, debentures, variable rate demand notes, master notes, funding agreements and other short-term corporate instruments. Commercial Paper consists of short-term promissory notes issued by corporations. Commercial paper

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may be traded in the secondary market after its issuance. Variable rate demand notes are securities with a variable interest which is readjusted on pre-established dates. Variable rate demand notes are subject to payment of principal and accrued interest (usually within seven days) on the Fund’s demand. Master notes are negotiated notes that permit the investment of fluctuating amounts of money at varying rates of interest pursuant to arrangements with issuers who meet the credit quality criteria of the Fund. The interest rate on a master note may fluctuate based upon changes in specified interest rates or be reset periodically according to a prescribed formula or may be a set rate. Although there is no secondary market in master notes, if such notes have a demand feature, the payee may demand payment of the principal amount of the note upon relatively short notice. Funding agreements are agreements between an insurance company and the Fund covering underlying demand notes. Although there is no secondary market in funding agreements, if the underlying notes have a demand feature, the payee may demand payment of the principal amount of the note upon relatively short notice. Master notes and funding agreements are generally illiquid and therefore subject to the Fund’s percentage limitation for investments in illiquid securities.

Other Investments

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

REITs are trusts that sell equity or debt securities to investors and use the proceeds to invest in real estate or interests therein. 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.

Limited Partnerships . A limited partnership interest entitles the Fund to participate in the investment return of the partnership’s assets as defined by the agreement among the partners. As a limited partner, the Fund generally is not permitted to participate in the management of the partnership. However, unlike a general partner whose liability is not limited, a limited partner’s liability generally is limited to the amount of its commitment to the partnership.

Master Limited Partnerships (MLPs) . The Fund may invest in MLPs.

MLPs generally are limited partnerships (or limited liability companies), the common units of which are listed and traded on a national securities exchange or over-the-counter. MLPs generally have two classes of partners, the general partner and the limited partners. The general partner normally controls the MLP through an equity interest plus units that are subordinated to the common (publicly

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traded) units for an initial period and then only converting to common if certain financial tests are met. The general partner also generally receives a larger portion of the net income as incentive. As cash flow grows, the general partner receives a greater interest in the incremental income compared to the interest of limited partners.

MLP common units represent an equity ownership interest in a partnership, providing limited voting rights and entitling the holder to a share of the company’s success through distributions and/or capital appreciation. Unlike shareholders of a corporation, common unit holders do not elect directors annually and generally have the right to vote only on certain significant events, such as mergers, a sale of substantially all of the assets, removal of the general partner or material amendments to the partnership agreement. MLPs are required by their partnership agreements to distribute a large percentage of their current operating earnings. Common unit holders generally have first right to a minimum quarterly distribution prior to distributions to the convertible subordinated unit holders or the general partner (including incentive distributions). Common unit holders typically have arrearage rights if the minimum quarterly distribution is not met. In the event of liquidation, MLP common unit holders have first right to the partnership’s remaining assets after bondholders, other debt holders, and preferred unit holders have been paid in full.

The general partner or managing member interest in an MLP is typically retained by the original sponsors of an MLP, such as its founders, corporate partners and entities that sell assets to the MLP. The holder of the general partner or managing member interest can be liable in certain circumstances for amounts greater than the amount of the holder’s investment in the general partner or managing member. General partner or managing member interests often confer direct board participation rights in, and in many cases control over the operations of, the MLP. General partner or managing member interests can be privately held or owned by publicly traded entities. General partner or managing member interests receive cash distributions, typically in an amount of up to 2% of available cash, which is contractually defined in the partnership or limited liability company agreement. In addition, holders of general partner or managing member interests typically receive incentive distribution rights (IDRs), which provide them with an increasing share of the entity’s aggregate cash distributions upon the payment of per common unit distributions that exceed specified threshold levels above the MQD. Incentive distributions to a general partner are designed to encourage the general partner, who controls and operates the partnership, to maximize the partnership’s cash flow and increase distributions to the limited partners. Due to the IDRs, general partners of MLPs have higher distribution growth prospects than their underlying MLPs, but quarterly incentive distribution payments would also decline at a greater rate than the decline rate in quarterly distributions to common and subordinated unit holders in the event of a reduction in the MLP’s quarterly distribution. The ability of the limited partners or members to remove the general partner or managing member without cause is typically very limited. In addition, some MLPs permit the holder of IDRs to reset, under specified circumstances, the incentive distribution levels and receive compensation in exchange for the distribution rights given up in the reset.

Some companies in which the Fund may invest have been organized as limited liability companies (MLP LLCs). Such MLP LLCs generally are treated in the same manner as MLPs for federal income tax purposes (i.e., generally taxed as partnerships). MLP LLC common units trade on a national securities exchange or OTC. In contrast to MLPs, MLP LLCs have no general partner and there are generally no incentives that entitle management or other unitholders to increased percentages of cash distributions as distributions reach higher target levels. In addition, MLP LLC common unitholders typically have voting rights with respect to the MLP LLC, whereas MLP common units have limited voting rights.

Investments in securities of an MLP involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, cash flow risks, dilution risks and risks related to the general partner’s right to require unit-holders to sell their common units at an undesirable time or price. Certain MLP securities may trade in lower volumes due to their smaller capitalizations, and may be subject to more abrupt or erratic price movements and lower market

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

There are also certain tax risks undertaken by the Fund when it invests in MLPs. MLPs are generally treated as partnerships for U.S. federal income tax purposes. Partnerships do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership’s income, gains, losses, deductions and expenses. A change in current tax law or a change in the underlying business mix of a given MLP could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in the MLP being required to pay U.S. federal income tax (as well as state and local income taxes) on its taxable income. This would have the effect of reducing the amount of cash available for distribution by the MLP and could result in a reduction in the value of a Fund’s investment in the MLP and lower income to the Fund. Also, to the extent a distribution received by a Fund from an MLP is treated as a return of capital, a Fund’s adjusted tax basis in the interests of the MLP will be reduced, which may increase the Fund’s tax liability upon the sale of the interests in the MLP or upon subsequent distributions in respect of such interests.

Initial Public Offerings. The Fund may invest in securities of companies in initial public offerings (“IPOs”).

IPOs of securities issued by unseasoned companies with little or no operating history are risky and their prices are highly volatile, but they can result in very large gains in their initial trading. Attractive IPOs are often oversubscribed and may not be available to a Fund, or only in very limited quantities. Thus, when the Fund’s size is smaller, any gains from IPOs will have an exaggerated impact on the Fund’s reported performance than when the Fund is larger. The Fund may engage in short-term trading in connection with its IPO investments, which could produce higher trading costs and adverse tax consequences. There can be no assurance that the Fund will have favorable IPO investment opportunities.

Other Investment Companies. Unless otherwise indicated in this SAI or the Fund’s prospectus, the Fund may purchase shares of other investment companies, including ETFs. 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. For example, under certain conditions, the Fund may acquire an unlimited amount of shares of mutual funds that are part of the same group of investment companies as the acquiring fund. In addition, these restrictions do not apply to investments by the Fund in investment companies that are money market funds, including money market funds that have Invesco or an affiliate of Invesco as 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.

Private Investments in Public Equity. Private investments in public equity (PIPES) are equity securities in a private placement that are issued by issuers who have outstanding, publicly-traded equity securities of the same class. Shares in PIPES generally are not registered with the SEC until after a certain time period from the date the private sale is completed. This restricted period can last many months. Until the public registration process is completed, PIPES are restricted as to resale and the Fund cannot freely trade the securities. Generally, such restrictions cause the PIPES to be illiquid during this time. PIPES may contain provisions that the issuer will pay specified financial penalties to the holder if the issuer does not publicly register the restricted equity securities within a specified period of time, but there

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is no assurance that the restricted equity securities will be publicly registered, or that the registration will remain in effect.

Defaulted Securities. The Fund may invest in defaulted securities.

Defaulted securities are debt securities on which the issuer is not currently making interest payments. In order to enforce its rights in defaulted securities, the Fund may be required to participate in legal proceedings or take possession of and manage assets securing the issuer’s obligations on the defaulted securities. This could increase the Fund’s operating expenses and adversely affect its net asset value. Risks in defaulted securities may be considerably higher as they are generally unsecured and subordinated to other creditors of the issuer. Any investments by the Fund in defaulted securities will also be considered illiquid securities subject to the limitations described herein, unless Invesco and/or the Sub-Advisers determines that such defaulted securities are liquid under guidelines adopted by the Board.

Municipal Forward Contracts . A municipal forward contract is a Municipal Security which is purchased on a when-issued basis with longer-than-standard settlement dates, in some cases taking place up to five years from the date of purchase. The buyer, in this case the Fund, will execute a receipt evidencing the obligation to purchase the bond on the specified issue date, and must segregate cash to meet that forward commitment.

Municipal forward contracts typically carry a substantial yield premium to compensate the buyer for the risks associated with a long when-issued period, including shifts in market interest rates that could materially impact the principal value of the bond, deterioration in the credit quality of the issuer, loss of alternative investment options during the when-issued period and failure of the issuer to complete various steps required to issue the bonds.

Variable or Floating Rate Instruments. The Fund may invest in variable or floating rate instruments.

Variable or floating rate instruments are securities that provide for a periodic adjustment in the interest rate paid on the obligation. The interest rates for securities with variable interest rates are readjusted on set dates (such as the last day of the month or calendar quarter) and the interest rates for securities with floating rates are reset whenever a specified interest rate change occurs. Variable or floating interest rates generally reduce changes in the market price of securities from their original purchase price because, upon readjustment, such rates approximate market rates. Accordingly, as market interest rates decrease or increase, the potential for capital appreciation or depreciation is less for variable or floating rate securities than for fixed rate obligations. Many securities with variable or floating interest rates have a demand feature allowing the Fund to demand payment of principal and accrued interest prior to its maturity. The terms of such demand instruments require payment of principal and accrued interest by the issuer, a guarantor, and/or a liquidity provider. All variable or floating rate instruments will meet the applicable rating standards of the Fund. The Adviser, or Sub-adviser, as applicable, may determine that an unrated floating rate or variable rate demand obligation meets the Fund’s rating standards by reason of being backed by a letter of credit or guarantee issued by a bank that meets those rating standards.

Inverse Floating Rate Obligations. The inverse floating rate obligations in which the Fund may invest are typically created through a division of a fixed-rate municipal obligation into two separate instruments, a short-term obligation and a long-term obligation. The interest rate on the short-term obligation is set at periodic auctions. The interest rate on the long-term obligation which the Fund may purchase is the rate the issuer would have paid on the fixed-income obligation, (i) plus the difference between such fixed rate and the rate on the short term obligation, if the short-term rate is lower than the fixed rate; or (ii) minus such difference if the interest rate on the short-term obligation is higher than the fixed rate. These securities have varying degrees of liquidity and the market value of such securities generally will fluctuate in response to changes in market rates of interest to a greater extent than the value of an equal principal amount of a fixed rate security having similar credit quality, redemption

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provisions and maturity. These securities tend to underperform the market for fixed rate bonds in a rising interest rate environment, but tend to outperform the market for fixed rate bonds when interest rates decline or remain relatively stable. Although volatile, inverse floating rate obligations typically offer the potential for yields exceeding the yields available on fixed rate bonds with comparable credit quality, coupon, call provisions and maturity. These securities usually permit the investor to convert the floating rate security counterpart to a fixed rate (normally adjusted downward), and this optional conversion feature may provide a partial hedge against rising rates if exercised at an opportune time.

Recently published final rules implementing section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (commonly known as the “Volcker Rule”) prohibit banking entities from engaging in proprietary trading of certain instruments and limit such entities’ investments in, and relationships with, “covered funds,” as defined in the rules. These rules may preclude banking entities from sponsoring and/or providing services for existing inverse floating rate obligation programs. There can be no assurances that these programs can be restructured substantially similar to their present form, that new sponsors of inverse floating rate obligations would begin providing these services, or that alternative forms of leverage will be available to a Fund in order to maintain current levels of leverage. Any alternative forms of leverage may be less advantageous to a Fund and may adversely affect the Fund’s net asset value, distribution rate and ability to achieve its investment objective. The ultimate impact of these rules on the inverse floating rate obligation market and the municipal market generally is not yet certain.

Zero-Coupon and Pay-in-Kind Securities . The Fund may invest in zero-coupon or pay-in-kind securities.

Zero-coupon securities do not pay interest or principal until final maturity unlike debt securities that traditionally provide periodic payments of interest (referred to as a coupon payment). Investors must wait until maturity to receive interest and principal, which increases the interest rate and credit risks of a zero coupon security. Pay-in-kind securities are securities that have interest payable by delivery of additional securities. Upon maturity, the holder is entitled to receive the aggregate par value of the securities. Zero-coupon and pay-in-kind securities may be subject to greater fluctuation in value and lower liquidity in the event of adverse market conditions than comparably rated securities paying cash interest at regular interest payment periods. Investors may purchase zero-coupon and pay in kind securities at a price below the amount payable at maturity. The difference between the purchase price and the amount paid at maturity represents “original issue discount” on the security.

Participation Notes. The Fund may invest in participation notes. Participation notes, also known as participation certificates, are issued by banks or broker-dealers and are designed to replicate the performance of foreign companies or foreign securities markets and can be used by the Fund as an alternative means to access the securities market of a country. Participation notes are generally traded OTC. The performance results of participation notes will not replicate exactly the performance of the foreign company or foreign securities market that they seek to replicate due to transaction and other expenses. Investments in participation notes involve the same risks associated with a direct investment in the underlying foreign companies or foreign securities market that they seek to replicate. In addition, participation notes are subject to counterparty risk, currency risk, and reinvestment risk. Counterparty risk is the risk that the broker-dealer or bank that issues them will not fulfill its contractual obligation to complete the transaction with the Fund. Participation notes constitute general unsecured contractual obligations of the banks or broker-dealers that issue them, and the Fund is relying on the creditworthiness of such banks or broker-dealers and has no rights under a participation note against the issuer of the underlying assets. Additionally, there is a currency risk since the dollar value of the Fund’s foreign investments will be affected by changes in the exchange rates between the dollar and (a) the currencies in which the notes are denominated, such as euro denominated participation notes, and (b) the currency of the country in which a foreign company sits. Also, there is a reinvestment risk because the amounts from the note may be reinvested in a less valuable investment when the note matures.

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Premium Securities. The Fund may invest in premium securities. Premium securities are securities bearing coupon rates higher than the then prevailing market rates.

Premium securities are typically purchased at a “premium”, in other words, at a price greater than the principal amount payable on maturity. The Fund will not amortize the premium paid for such securities in calculating its net investment income. As a result, in such cases the purchase of premium securities provides the Fund a higher level of investment income distributable to shareholders on a current basis than if the Fund purchased securities bearing current market rates of interest. However, the yield on these securities would remain at the current market rate. If securities purchased by the Fund at a premium are called or sold prior to maturity, the Fund will realize a loss to the extent the call or sale price is less than the purchase price. Additionally, the Fund will realize a loss of principal if it holds such securities to maturity.

Stripped Income Securities. The Fund may invest in stripped income securities.

Stripped Income Securities are obligations representing an interest in all or a portion of the income or principal components of an underlying or related security, a pool of securities, or other assets. Stripped income securities may be partially stripped so that each class receives some interest and some principal. However, they may be completely stripped, where one class will receive all of the interest (the interest only class or the IO class), while the other class will receive all of the principal (the principal-only class or the PO class).

The market values of stripped income securities tend to be more volatile in response to changes in interest rates than are conventional income securities. In the case of mortgage-backed stripped income securities, the yields to maturity of IOs and POs may be very sensitive to principal repayments (including prepayments) on the underlying mortgages resulting in the Fund being unable to recoup its initial investment or resulting in a less than anticipated yield. The market for stripped income securities may be limited, making it difficult for the Fund to dispose of its holding at an acceptable price.

Privatizations. The Fund may invest in privatizations.

The governments of certain foreign countries have, to varying degrees, embarked on privatization programs to sell part or all of their interests in government owned or controlled companies or enterprises (privatizations). The Fund’s investments in such privatizations may include: (i) privately negotiated investments in a government owned or controlled company or enterprise; (ii) investments in the initial offering of equity securities of a government owned or controlled company or enterprise; and (iii) investments in the securities of a government owned or controlled company or enterprise following its initial equity offering.

In certain foreign countries, the ability of foreign entities such as the Fund to participate in privatizations may be limited by local law, or the terms on which the Fund may be permitted to participate may be less advantageous than those for local investors. There can be no assurance that foreign governments will continue to sell companies and enterprises currently owned or controlled by them, that privatization programs will be successful, or that foreign governments will not re-nationalize companies or enterprises that have been privatized. If large blocks of these enterprises are held by a small group of stockholders the sale of all or some portion of these blocks could have an adverse effect on the price.

Senior Secured Floating Rate Securities. The Fund may invest in senior secured floating rate loans and senior secured floating rate debt instruments made to or issued by borrowers (which may include U.S. and non-U.S. companies) that (i) have variable rates which adjust to a base rate, such as London Interbank Offered Rate (LIBOR), on set dates, typically every 30 days but not to exceed one year; and/or (ii) have interest rates that float at a margin above a generally recognized base lending rate such as the Prime Rate of a designated U.S. bank.

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Investment Techniques

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

Forward commitments, 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. The Fund may also enter into buy/sell back transactions (a form of delayed delivery agreement). In a buy/sell back transaction, the 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 the Fund generally intends to acquire or dispose of securities on a forward commitment, when-issued or delayed delivery basis, the 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, the 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 the 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.

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, the 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 the 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 the Fund and will be subject to the risk of market fluctuation. The purchase price of the delayed delivery securities is a liability of the 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

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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. The Fund may engage in short sales. In addition, the Fund may engage in short sales of TBA mortgages.

A short sale involves the sale of a security which the 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, the 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, the 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, the 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 the 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 box (i.e., short sales of a security owned long by the Fund). 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.

Short sales against the box result in a “constructive sale” and require the 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 . The Fund will not purchase any security on margin, except that the Fund may obtain such short-term credits as may be necessary for the clearance of purchases and sales of portfolio securities. The payment by the 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.

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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). The 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 Fund 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. The Fund also intends to borrow money to purchase additional securities when Invesco or the Sub-Adviser deems it advantageous to do so. All borrowings are limited to an amount not exceeding 33 1/3% of the 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.

The ability of the Fund to borrow money to purchase additional securities gives the Fund greater flexibility to purchase securities for investment or tax reasons and not to be dependent on cash flows. To the extent borrowing costs exceed the return on the additional investments, the return realized by the Fund’s shareholders will be adversely affected. The Fund’s borrowing to purchase additional securities creates an opportunity for a greater total return to the Fund, but, at the same time, increases exposure to losses. The Fund’s willingness to borrow money for investment purposes, and the amount it borrows depends upon many factors, including investment outlook, market conditions and interest rates. Successful use of borrowed money to purchase additional investments depends on Invesco’s or the Sub-Adviser’s ability to predict correctly interest rates and market movements; such a strategy may not be successful during any period in which it is employed.

If there are unusually heavy redemptions, the 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, the Fund’s borrowing ability would help to mitigate any such effects and could make the forced sale of its portfolio securities less likely.

The Fund may borrow from a bank, broker-dealer, or an Invesco Fund. Additionally, the Fund is permitted to temporarily carry a negative or overdrawn balance in its account with its custodian bank. To compensate the custodian bank for such overdrafts, the Fund may either (i) leave funds as a compensating balance in its account so the custodian bank can be compensated by earning interest on such funds; or (ii) compensate the custodian bank by paying it an agreed upon rate.

Lending Portfolio Securities . The 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. The Fund may lend portfolio securities to the extent of one-third

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of its total assets. The 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.

The 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 the 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 the 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. The Fund may engage in repurchase agreement transactions. Repurchase agreements are agreements under which the 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 the Fund’s holding period. The 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.

If the seller of a repurchase agreement fails to repurchase the security in accordance with the terms of the agreement, the 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 repurchase agreements, if the seller of a repurchase agreement should be involved in bankruptcy or insolvency proceedings, the 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 Fund 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,

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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 Fund may invest its 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 are considered loans by the Fund under the 1940 Act.

Restricted and Illiquid Securities . The 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 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 the 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. The 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 the 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.

Rule 144A Securities . The Fund may invest in Rule 144A securities. Rule 144A securities are securities which, while privately placed, are eligible for purchase and resale pursuant to Rule 144A under the 1933 Act. This Rule permits certain qualified institutional buyers, such as the Fund, to trade in privately placed securities even though such securities are not registered under the 1933 Act. Invesco and/or Sub-Advisers, under the supervision of the Board, will consider whether securities purchased under Rule 144A are illiquid and thus subject to the Fund’s restriction on investment in illiquid securities. Determination of whether a Rule 144A security is liquid or not is a question of fact. In making this determination Invesco and/or Sub-Advisers will consider the trading markets for the specific security taking into account the unregistered nature of a Rule 144A security. In addition, Invesco and/or Sub-Advisers could consider the (i) frequency of trades and quotes; (ii) number of dealers and potential purchasers; (iii) dealer undertakings to make a market; and (iv) nature of the security and of market place trades (for example, the time needed to dispose of the security, the method of soliciting offers and the mechanics of transfer). Invesco and/or Sub-Advisers will also monitor the liquidity of Rule 144A securities and, if as a result of changed conditions, Invesco and/or Sub-Advisers determines that a Rule 144A security is no longer liquid, Invesco and/or Sub-Advisers will review the Fund’s holdings of illiquid securities to determine what, if any, action is required to assure that such Fund complies with its restriction on investment in illiquid securities. Investing in Rule 144A securities could increase the amount of the Fund’s investments in illiquid securities if qualified institutional buyers are unwilling to purchase such securities.

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Reverse Repurchase Agreements. The Fund may engage in reverse repurchase agreements.

Reverse repurchase agreements are agreements that involve the sale of securities held by the Fund to financial institutions such as banks and broker-dealers, with an agreement that the Fund will repurchase the securities at an agreed upon price and date (or upon demand). During the reverse repurchase agreement period, the Fund continues to receive interest and principal payments on the securities sold. The Fund may employ reverse repurchase agreements (i) for temporary emergency purposes, such as to meet unanticipated net redemptions so as to avoid liquidating other portfolio securities during unfavorable market conditions; (ii) to cover short-term cash requirements resulting from the timing of trade settlements; or (iii) to take advantage of market situations where the interest income to be earned from the investment of the proceeds of the transaction is greater than the interest expense of the transaction.

Reverse repurchase agreements are a form of leverage and involve the risk that the market value of securities to be purchased by the Fund may decline below the price at which the Fund is obligated to repurchase the securities, or that the other party may default on its obligation, so that the Fund is delayed or prevented from completing the transaction. At the time the Fund enters into a reverse repurchase agreement, it will segregate, and maintain, liquid assets having a dollar value equal to the repurchase price, if specified, or the value of proceeds received on any sale subject to repurchase plus accrued interest. This practice of segregating assets is referred to as “cover.” The liquidity of a Fund and its ability to meet redemption requests may be impaired to the extent that a substantial portion of the Fund’s otherwise liquid assets is used as cover or pledged to the counterparty as collateral. In the event the buyer of securities under a reverse repurchase agreement files for bankruptcy or becomes insolvent, the Fund’s use of the proceeds from the sale of the securities may be restricted pending a determination by the other party, or its trustee or receiver, whether to enforce the Fund’s obligation to repurchase the securities. Reverse repurchase agreements may be considered borrowings by the Fund for the purposes of the 1940 Act and, therefore, may be included in the Fund’s calculation of its 33  ¹ ⁄ ₃ limitation on borrowing. See the section entitled “Borrowing” above.

Mortgage Dollar Rolls. The Fund may engage in mortgage dollar rolls (a dollar roll).

A dollar roll is a type of transaction that involves the sale by the Fund of a mortgage-backed security to a financial institution such as a bank or broker-dealer, with an agreement that the Fund will repurchase a substantially similar (i.e., same type, coupon and maturity) security at an agreed upon price and date. The mortgage securities that are purchased will bear the same interest rate as those sold, but will generally be collateralized by different pools of mortgages with different prepayment histories. During the period between the sale and repurchase the Fund will not be entitled to receive interest or principal payments on the securities sold but is compensated for the difference between the current sales price and the forward price for the future purchase. In addition, cash proceeds of the sale may be invested in short-term instruments and the income from these investments, together with any additional fee income received on the sale, would generate income for the Fund. The Fund typically enters into a dollar roll transaction to enhance the Fund’s return either on an income or total return basis or to manage pre-payment risk.

Dollar roll transactions involve the risk that the market value of the securities retained by the Fund may decline below the price of the securities that the Fund has sold but is obligated to repurchase under the agreement. In the event the buyer of securities under a dollar roll transaction files for bankruptcy or becomes insolvent, the Fund’s use of the proceeds from the sale of the securities may be restricted pending a determination by the other party, or its trustee or receiver, whether to enforce the Fund’s obligation to repurchase the securities. Dollar rolls may be considered borrowings by the Fund for the purposes of the 1940 Act and, therefore, may be included in the Fund’s calculation of its 33  ¹ ⁄ ₃ limitation on borrowing. See the section entitled “Borrowing” above. At the time the Fund enters into a dollar roll transaction, a sufficient amount of assets held by the Fund will segregated to meet the forward commitment.

Unless the benefits of the sale exceed the income, capital appreciation or gains on the securities sold as part of the dollar roll, the investment performance of the Fund will be less than what the performance would have been without the use of dollar rolls. The benefits of dollar rolls may depend

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upon the Adviser or Sub-Adviser’s ability to predict mortgage repayments and interest rates. There is no assurance that dollar rolls can be successfully employed.

Standby Commitments . Certain Funds may acquire securities that are subject to standby commitments from banks or other municipal securities dealers.

Under a standby commitment, a bank or dealer would agree to purchase, at the Fund’s option, specified securities at a specified price. Standby commitments generally increase the cost of the acquisition of the underlying security, thereby reducing the yield. Standby commitments depend upon the issuer’s ability to fulfill its obligation upon demand. Although no definitive creditworthiness criteria are used for this purpose, Invesco reviews the creditworthiness of the banks and other municipal securities dealers from which the Funds obtain standby commitments in order to evaluate those risks.

Derivatives

The Fund may invest in 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 commodities, stocks, bonds, interest rates, currency exchange rates or related indices. Derivatives include swaps, options, warrants, futures and forward foreign currency contracts. Some derivatives, such as futures and certain options, are traded on U.S. exchanges, while other derivatives are privately negotiated and entered into in the OTC market. In addition, the Dodd-Frank Wall Street Reform and Consumer and Protection Act of 2010 (the Dodd-Frank Act) and implementing rules will ultimately require many types of swaps to be traded on public facilities.

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 manager seeks 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.” The Fund will not enter into any derivative transaction unless it can comply with SEC guidance regarding cover, and, if SEC guidance so requires, the 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 the 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 the Fund’s net asset value being more sensitive to changes in the value of the related investment.

For swaps, forwards and futures that are contractually required to “cash-settle,” the Fund is permitted to set aside liquid assets in an amount equal to the Fund’s daily mark-to-market (net) obligations, if any (i.e., the Fund’s daily net liabilities, if any), rather than the notional value (See Swaps). The Fund may also segregate mark-to-market (net) obligations instead of notional value for certain other types of forward foreign currency contracts (see Forward Foreign Currency Contracts below). By setting aside assets equal to only its net obligations under cash-settled swaps, forward and futures contracts, the Fund will have the ability to employ leverage to a greater extent than if the Fund were required to segregate assets equal to the full notional value of such contracts. The Fund reserves the right to modify

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its asset segregation policies in the future to comply with any changes in the positions articulated from time to time by the SEC.

Regulation under the Commodity Exchange Act (CEA):

The Adviser is registered as a commodity pool operator (CPO) under the CEA and the rules of the CFTC and is subject to CFTC regulation with respect to the Fund. The CFTC has recently adopted rules regarding the disclosure, reporting and recordkeeping requirements that will apply with respect to the Fund as a result of Invesco’s registration as a CPO. Generally, these rules allow for substituted compliance with CFTC disclosure and shareholder reporting requirements, based on Invesco’s compliance with comparable SEC requirements. This means that for most of the CFTC’s disclosure and shareholder reporting requirements applicable to Invesco as the Fund’s CPO, Invesco’s compliance with SEC disclosure and shareholder reporting requirements will be deemed to fulfill Invesco’s CFTC compliance obligations. However, as a result of CFTC regulation with respect to the Fund, the Fund may incur additional compliance and other expenses. The Adviser is also registered as a commodity trading advisor (CTA) but, with respect to the Fund, relies on an exemption from CTA regulation available for a CTA that also serves as a fund’s CPO. The CFTC has neither reviewed nor approved the Fund, its investment strategies, or this SAI.

General risks associated with derivatives:

The use by the Fund 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 obligation; therefore, the 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 the 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 the 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 creditworthiness declines, the value of the derivative would also likely decline, potentially resulting in losses to the Fund.

The 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 the 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. The Fund segregates or earmarks assets or otherwise covers transactions that may give rise to leverage. Leverage may cause the 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 the 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 Fund does 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

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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 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 Fund engages in derivative transactions, may limit or prevent the Fund from using or limit the Fund’s use of these instruments effectively as a part of its investment strategy, and could adversely affect the Fund’s ability to achieve its investment objective. Invesco will continue to monitor developments in the area, particularly to the extent regulatory changes affect the Fund’s ability to enter into desired swap agreements. New requirements, even if not directly applicable to the Fund, may increase the cost of the Fund’s investments and cost of doing business.

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 Fund 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, the 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. The Fund may enter into swap agreements.

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Generally, swap agreements are contracts between the 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 clearinghouse 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 in returns) earned or realized on a particular asset such as an equity or debt security, commodity, currency or interest rate, 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, one of the parties may be required to make an early termination payment to the other. Although early termination payments are typically made by the defaulting party to the non-defaulting party, under certain circumstances (i.e., when the non-defaulting party is “in-the-money”) the non-defaulting party may be required to pay an early termination payment to the defaulting party. Early termination payments may be calculated in various ways, but generally represent the amount that the non-defaulting party would have to pay to replace the swap as of the date of default.

During the term of an uncleared swap, the 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 the 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 the 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.

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.

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Cleared Swaps. Certain standardized swaps are subject to mandatory central clearing. Central clearing is intended to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free. 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. To date, the CFTC has designated only certain credit default swaps and certain interest rate swaps as subject to mandatory clearing, but it is expected that additional categories of swaps will in the future be designated as subject to mandatory clearing.

In a cleared swap, the Fund’s ultimate counterparty is a central clearinghouse rather than a brokerage firm, bank or other financial institution. The Fund initially will enter into cleared swaps through an executing broker. Such transactions will then be submitted for clearing and, if cleared, will be held at regulated FCMs that are members of the clearinghouse that serves as the central counterparty. Cleared swaps are submitted for clearing immediately following execution of the transaction.

When the 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, 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, depending upon changes in the price of the underlying reference instrument subject to the swap agreement. 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 bilateral 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 the 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 swap contract. The assets of the 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, the 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.

With cleared swaps, the 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 the 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 generally can require termination of existing cleared swap transactions at any time, and can also require increases in margin above the margin that is required at the initiation of the swap agreement. Additionally, depending on a number of factors, the margin required under the rules of the clearinghouse and FCM may be in excess of the collateral required to be posted by the Fund to support its obligations under a similar uncleared swap. However, regulators are expected to adopt rules imposing certain margin requirements, including minimums, on uncleared swaps in the near future, which could change this comparison.

Finally, the 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.

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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. The Fund may enter into CDS to create long or short exposure to domestic or foreign corporate debt securities or sovereign debt securities.

The 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, the 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. CDX allow 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 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 : An agreement between two parties pursuant to which the parties exchange a U.S. dollar-denominated payment for a payment denominated in a different currency. 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

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requirement. They are also not considered “commodity interests” for purposes of CEA Exclusions and Regulation, 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. The 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 the 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 the Fund’s swap transactions or cause the Fund’s hedging positions to be rendered useless, resulting in full currency exposure as well as incurring unnecessary transaction costs.

Interest Rate Swap: 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.

Inflation Swaps: Inflation swap agreements are contracts in which one party agrees to pay the cumulative percentage increase in a price index, such as the Consumer 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 of inflation.

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.

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Volatility and Variance Swaps: A volatility swap involves an exchange between the 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 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.

Options . The Fund may engage in certain strategies involving options to attempt to manage the risk of its investments and in certain circumstances, for investment (e.g., as a substitute for investing in securities), to speculate on future volatility levels or to decrease the volatility exposure of other investments held by the Fund. 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 in the case of an index option the cash value of the index). 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 the 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.

The Fund may effectively terminate its right or obligation under an option by entering into an offsetting closing transaction. For example, the 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, the 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 the 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 the 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, the Fund might be unable to close out an OTC option position at any time prior to its expiration.

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Types of Options:

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 the Fund writes a call on an index it cannot provide in advance for its potential settlement obligations by acquiring and holding the underlying securities. The 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 paying a market based, 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. Swaptions also include options that allow an existing swap to be terminated or extended by one of the counterparties.

Swaptions are considered to be swaps for purposes of CFTC regulation. Although they are currently traded OTC, the CFTC may in the future designate certain options on swaps as subject to mandatory clearing.

Option Techniques

Writing Options . The 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

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prior to expiration. Whether or not an option expires unexercised, the writer retains the amount of the premium.

The 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 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 the 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, the 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 the 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 . The Fund may 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; purchase put options on underlying securities, contracts, currencies against which it has written other put options; or speculative on the value of a security, currency, contract, index or quantitative measure. 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.

The 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 the 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. The Fund may for hedging purposes or for speculative purposes enter into straddles (combinations of put and call options on the same underlying security, index or quantitative measure) to adjust the risk and return characteristics of the Fund’s overall position. A possible combined position would involve writing a covered call option at one strike price and buying a call option at a lower price, in order to reduce the risk of the written covered call option in the event of a substantial price increase. Because combined options positions involve multiple trades, they result in higher transaction costs and may be more difficult to open and close out.

Spread and straddle options transactions. In “spread” transactions, the 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,” the 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 the Fund engages in spread and straddle transactions, it seeks to profit

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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. The 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 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. The 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. The Fund may enter into futures contracts.

A futures contract is a two-party 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, Eurodollar Future or volatility 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 Fund will only enter into futures contracts that are traded (either domestically or internationally) on futures exchanges 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 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 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 the 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

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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 the 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 margin amount and the amount of the gain are paid to the Fund.

There is a risk of loss by the 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 the 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, the 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 affected 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 the Fund will be able to enter into an offsetting transaction with respect to a particular futures contract at a particular time. If the 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 the 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 fund 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.

The 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. The 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.

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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.

Interest Rate Futures. An interest-rate futures contract is an exchange-traded contact 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.

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.

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. The Fund currently may not invest in any security (including futures contracts or options thereon) that is secured by physical commodities.

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. The Fund may enter into forward foreign currency transactions 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 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. The 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, the Fund may either exchange the currencies specified at the maturity of the contract or, prior to maturity, 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. The Fund may also enter into forward foreign currency contracts that do not provide for physical settlement of

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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 (non-deliverable forwards).

The Fund 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), the Fund covers its open positions by setting aside liquid assets equal to the contracts’ full notional value. With respect to forward foreign currency contracts that are contractually required to “cash-settle” (i.e., a non-deliverable forward (NDF) or the synthetic equivalent thereof), however, the Fund sets aside liquid assets in an amount equal to the Fund’s daily mark-to-market obligation (i.e., the Fund’s daily net liability, if any), rather than the contract’s full notional value. By setting aside assets equal to its net obligations under forward contracts that are cash-settled or treated as being cash-settled, The Fund will have the ability to employ leverage to a greater extent than if the Fund were required to segregate assets equal to the full notional value of such contracts. Segregated assets cannot be sold or transferred unless equivalent assets are substituted in their place or it is no longer necessary to segregate them. As a result, there is a possibility that segregation of a large percentage of the Fund’s assets could impede portfolio management or the Fund’s ability to meet redemption requests or other current obligations.

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 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 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 the 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 the 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 the 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.

Fund Policies

Fundamental Restrictions. Except as otherwise noted below, the Fund is subject to the following investment restrictions, which may be changed only by a vote of the 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, except for the restriction related to borrowing, 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 “non-diversified company” as defined in the 1940 Act.

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(2) The Fund may not borrow money or issue senior securities, except as permitted by 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 Interpretations, 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 derivative instruments, including but not limited to forwards, swaps and futures contracts and options thereon, the underlying reference assets of which are physical commodities or investing in securities or other instruments that are secured by, or the returns of which are linked to, 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 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 the Fund 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 the Fund has this flexibility, the Board has adopted non-fundamental restrictions for the Fund relating to certain of these restrictions which Invesco and, when applicable, the Sub-Advisers must follow in managing the Fund. 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 the Fund without shareholder approval.

(1) 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).

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(2) 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.

(3) 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 Fund does 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 Fund will interpret the fundamental restriction and the related non-fundamental restriction to permit the Fund, subject to the Fund’s investment objectives and general investment policies (as stated in the Fund’s 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, foreign currency forward 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 Fund will interpret the fundamental restriction regarding the purchase and sale of physical commodities and the related non-fundamental restriction to permit the Fund 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 Fund’s prospectuses and herein.

(4) 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.

(5) Notwithstanding the fundamental restriction with regard to investing all assets in an open-end fund, the 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.

(6) The following applies: (1) The Fund invests, under normal circumstances, at least 80% of its assets in debt securities.

For purposes of the foregoing, “assets” means net assets, plus the amount of any borrowings for investment purposes. Derivatives and other instruments that have economic characteristics similar to the securities described above for the Fund may be counted toward the Fund’s 80% policy. 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.

Portfolio Turnover

Variations in turnover rate may be due to a fluctuating volume of shareholder purchase and redemption orders, market conditions and/or changes in Invesco’s investment outlook. As of the date of this SAI, the Fund has no portfolio turnover.

Policies and Procedures for Disclosure of Fund Holdings

The Board has adopted policies and procedures with respect to the disclosure of the Fund’s 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

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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 Fund discloses the following portfolio holdings information on http:// www.invesco.com /us ¹ :

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 http:// 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) 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 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:

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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 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 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 Fund, the Sub-Advisers and each of their employees may receive or have access to portfolio holdings as part of the day to day operations of the Fund.

From time to time, employees of Invesco and its affiliates may express their views orally or in writing on one or more of the Fund’s portfolio securities or may state that the 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 the 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 Web site. 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 Fund, 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 the 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 the Fund or its underlying portfolio securities including, but not limited to, alpha, beta, R-squared, coefficient of determination,

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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 the 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 Fund’s portfolio securities. Invesco does not enter into formal Non-disclosure Agreements in connection with these situations; however, the Fund 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 (as defined herein) 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 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 at http:// 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 Web sites at approximately the same time that Invesco discloses portfolio holdings information for the other Invesco Funds on its website. 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.