Investment Strategies and Risks

Set forth below are detailed descriptions of the various types of securities and investment techniques that Invesco and/or the Sub-Advisers (as defined herein) may use in managing the 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 Prospectuses; where a particular type of security or investment technique is not discussed in the Fund’s Prospectuses, that security or investment technique is not a principal investment strategy of the Fund.

Unless otherwise indicated, the Fund may invest in all of the following types of investments. The Fund may not invest in all of the security types or use all of the techniques described below at any one time. Moreover, Invesco and/or the Sub-Advisers may invest in types of securities and may use investment techniques in managing the Fund not specifically mentioned below. Any investment shall be subject to limitations imposed by the Fund’s investment objective, policies and restrictions described in the Fund’s Prospectuses 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 Prospectuses 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 sell its illiquid securities holdings, or reduce its 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 approval of the holders of the Fund’s voting securities.

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;

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however, the rights of preferred stockholders on the distribution of a company’s assets in the event of a liquidation or bankruptcy are generally subordinate to the rights of the company’s debt holders and general creditors. If interest rates rise, the fixed dividend on preferred stocks may be less attractive, causing the price of preferred stocks to decline.

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

Convertible Securities. Convertible securities are generally bonds, debentures, notes, preferred stocks or other securities or investments that may be converted or exchanged (by the holder or by the issuer) into shares of the underlying common stock (or cash or securities of equivalent value) at a stated exchange ratio or predetermined price (the conversion price). A convertible security is designed to provide current income and also the potential for capital appreciation through the conversion feature, which enables the holder to benefit from increases in the market price of the underlying common stock. A convertible security may be called for redemption or conversion by the issuer after a particular date and under certain circumstances (including a specified price) established upon issue. If a convertible security held by 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

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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.

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

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

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

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

Alternative Entity Securities. The 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

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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 and are 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, EDRs and GDRs entitle the holder to all dividends and capital gains on the underlying foreign securities, less any fees paid to the bank. Purchasing ADRs, EDRs or GDRs gives the Fund the ability to purchase the functional equivalent of foreign securities without going to the foreign securities markets to do so. ADRs, EDRs, or GDRs that are “sponsored” are those where the foreign corporation whose shares are represented by the ADR, EDR or GDR is actively involved in the issuance of the ADR, EDR or GDR and generally provides material information about the corporation to the U.S. market. An “unsponsored” ADR, EDR or GDR 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, EDR or GDR 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 country in a particular region/continent; (2) it has a principal office in a country or in a country in a particular region/continent; (3) it derives 50% or more of its total revenues from businesses in a country or in a country in a particular region/continent; and/or (4) its securities are traded principally on a security exchange, or in an over-the-counter (OTC) market, in a particular country or in a country in a particular region/continent.

Investments by the Fund in foreign securities, including ADRs, EDRs, and GDRs, 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 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 may not be registered with the U.S. Securities and Exchange Commission (SEC) and are generally not subject to the regulatory controls and disclosure requirements 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

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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 U. S. 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, and there is generally less government regulation and supervision of foreign stock exchanges, brokers and issuers, each of 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 (i) generally recognized to be an emerging market country by the international financial community, including the World Bank, or (ii) determined by the Adviser to be an emerging market country. As of the date of this SAI, the Adviser considers “emerging market countries” to generally include every country in the world except those countries included in the MSCI World Index. The Adviser has broad discretion to identify countries that it considers to be emerging market countries and may consider various factors in determining whether to classify a country as an emerging market country, including a country’s relative interest rates, inflation rates, exchange rates, monetary and fiscal policies, trade and current account balances, legal and political developments and any other specific factors the Adviser believes to be relevant. Because emerging markets equity and emerging markets debt are distinct asset classes, a country may be deemed an emerging market country with respect to its equity only, its debt only, both its equity and debt, or neither.

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:

Risks of Investments in China A-shares through the Stock Connect Program. The Shanghai-Hong Kong Stock Connect program and the Shenzhen-Hong Kong Stock Connect program (both programs collectively referred to as the Connect Program) are securities trading and clearing programs through which the Fund can trade eligible listed China A-shares. The Connect Program is subject to quota limitations and an investor cannot purchase and sell the same security on the same trading day, which

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may restrict a Fund’s ability to invest in China A-shares through the Connect Program and to enter into or exit trades on a timely basis. The Shanghai and Shenzhen markets may be open at a time when the Connect Program is not trading, with the result that prices of China A-shares may fluctuate at times when the Fund is unable to add to or exit its position. Only certain China A-shares are eligible to be accessed through the Connect Program. Such securities may lose their eligibility at any time, in which case they could be sold but could no longer be purchased through the Connect Program. Because the Connect Program is in its early stages, the actual effect on the market for trading China A-shares with the introduction of large numbers of foreign investors is currently unknown. The Connect Program is subject to regulations promulgated by regulatory authorities for the Shanghai Stock Exchange, the Stock Exchange of Hong Kong Limited, and the Shenzhen Stock Exchange, and further regulations or restrictions, such as limitations on redemptions or suspension of trading, may adversely impact the Connect Program, if the authorities believe it necessary to assure orderly markets or for other reasons. There is no guarantee that all three exchanges will continue to support the Connect Program in the future.

Investments in China A-shares may not be covered by the securities investor protection programs of the exchanges and, without the protection of such programs, will be subject to the risk of default by the broker. In the event that the depository of the Shanghai Stock Exchange and the Shenzhen Stock Exchange defaulted, a Fund may not be able to recover fully its losses from the depository or may be delayed in receiving proceeds as part of any recovery process. In addition, because all trades on the Connect Program in respect of eligible China A-shares must be settled in Renminbi (RMB), the Chinese currency, the Fund investing through the Connect Program must have timely access to a reliable supply of offshore RMB, which cannot be guaranteed. The existence of a liquid trading market for China A-shares may depend on whether there is supply of, and demand for, such China A-shares. Market volatility and settlement difficulties in the China A-shares markets may also result in significant fluctuations in the prices of the securities traded on such markets.

China A-shares purchased through the Connect Program are held in nominee name and not the Fund’s name as the beneficial owner. It is possible, therefore, that a Fund’s ability to exercise its rights as a shareholder and to pursue claims against the issuer of China A-shares may be limited because the nominee structure has not been tested in Chinese courts. In addition, a Fund may not be able to participate in corporate actions affecting China A-shares held through the Connect Program due to time constraints or for other operational reasons.

Trades on the Connect Program are subject to certain requirements prior to trading. If these requirements are not completed prior to the market opening, a Fund cannot sell the shares on that trading day. In addition, these requirements may limit the number of brokers that a Fund may use to execute trades. If an investor holds 5% or more of the total shares issued by a China A-share issuer, the investor must return any profits obtained from the purchase and sale of those shares if both transactions occur within a six- month period. If a Fund holds 5% or more of the total shares of a China A-share issuer, its profits may be subject to these limitations. All accounts managed by the Adviser and/or its affiliates will be aggregated for purposes of this 5% limitation, which makes it more likely that a Fund’s profits may be subject to these limitations.

Risks of Investments in the China Interbank Bond Market through the Bond Connect Program. The Fund may invest in China onshore bonds traded on the China Interbank Bond Market (“CIBM”) through the China – Hong Kong Bond Connect Program (“Bond Connect”). In China, the Hong Kong Monetary Authority Central Moneymarkets Unit holds Bond Connect securities on behalf of ultimate investors (such as the Funds) in accounts maintained with a China-based custodian (either the China Central Depository & Clearing Co. or the Shanghai Clearing House). This recordkeeping system subjects a Fund to various risks, including the risks of settlement delays and counterparty default of the China custodian and Hong Kong custody agent. In addition, the risk the Fund may have a limited ability to enforce rights as a bondholder because enforcing the ownership rights of a beneficial holder of Bond Connect securities is untested and courts in China have limited experience in applying the concept of beneficial ownership.

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Bond Connect uses the trading infrastructure of both Hong Kong and China and is not available on trading holidays in Hong Kong. As a result, prices of securities purchased through Bond Connect may fluctuate at times when the Fund is unable to add to or exit its position. Securities offered through Bond Connect may lose their eligibility for trading through Bond Connect at any time. If Bond Connect securities lose their eligibility for trading through Bond Connect, they may be sold but can no longer be purchased through Bond Connect.

Because Bond Connect trades are settled in RMB, the Fund investing through Bond Connect must have timely access to a reliable supply of offshore RMB, which cannot be guaranteed.

Market volatility and potential lack of liquidity due to low trading volume of certain bonds on the CIBM may result in prices of such bonds fluctuating significantly, exposing a Fund to liquidity and volatility risks. The bid-ask spreads of the prices of such securities may be large, and a Fund may therefore incur significant costs and may suffer losses when selling such investments. Bonds traded on the CIBM may be difficult or impossible to sell, which may impact a Fund’s ability to acquire or dispose of such securities at their expected prices.

Bond Connect is relatively new and its effects on the Chinese interbank bond market are uncertain. Trading through Bond Connect is performed through newly developed trading platforms and operational systems, and in the event of systems malfunctions or extreme market conditions, trading via Bond Connect could be disrupted. There can be no assurance as to Bond Connect’s continued existence or whether future developments regarding Bond Connect (including further interpretation and guidance provided by regulators in Hong Kong and China) may restrict or adversely affect the Fund’s investments or returns. Finally, uncertainties in China tax rules governing taxation of income and gains from investments via Bond Connect could result in unexpected tax liabilities for a Fund.

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 below under “Foreign Debt 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 Debt Securities. The Fund may invest in foreign debt securities. Foreign debt securities are debt securities that are issued and/or settled outside the United States and may be backed by foreign guarantees. The Fund will limit its investments in foreign debt securities to debt obligations denominated in U.S. dollars. Debt securities issued by a corporation or other issuer domiciled outside the United States that are U.S. dollar-denominated and traded in the United States are not considered foreign securities. Although denominated in U.S. dollars, foreign debt securities may entail some or all of the risks discussed above under “Foreign Securities.”

Foreign Exchange Transactions. The Fund may invest in foreign currency-denominated securities and has the authority to purchase and sell put and call options on foreign currencies (foreign currency options), foreign currency futures contracts and related options, and currency-related swaps, and may engage in foreign currency transactions either on a spot (i.e., for prompt delivery and settlement) basis at the rate prevailing in the currency exchange market at the time or through forward foreign currency contracts (see “Forward Foreign Currency Contracts”). The use of these instruments may result in a loss to the Fund if the counterparty to the transaction (particularly with respect to OTC derivatives, as

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discussed further below) does not perform as promised, including because of such counterparty’s bankruptcy or insolvency.

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

The Fund may purchase and sell foreign currency futures contracts and purchase and write foreign currency options to increase or decrease its exposure to different foreign currencies. The Fund may also purchase and write foreign currency options in connection with foreign currency futures contracts or forward foreign currency contracts. Foreign currency futures contracts 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 contracts are similar to those of futures contracts relating to securities or indices (see Futures Contracts). Foreign currency futures contracts values can be expected to correlate with exchange rates but may not reflect other factors that affect the value of the Fund’s investments.

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 forward foreign currency 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.

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.”

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

Exchange-Traded Funds

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Exchange-Traded Funds (ETFs). The Fund may purchase shares of ETFs. Most ETFs are registered under the 1940 Act as investment companies although others may not be registered as investment companies and are registered as commodity pools. Therefore, 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 unaffiliated advisers as well as ETFs advised by Invesco Capital Management LLC (Invesco Capital). Invesco, the Sub-Advisers and Invesco Capital are affiliates of each other as they are all indirect wholly-owned subsidiaries of Invesco Ltd.

Generally, ETFs hold portfolios of securities, commodities and/or currencies that are designed to replicate, as closely as possible before expenses, the performance of a specified market index. The performance results of ETFs will not replicate exactly the performance of the pertinent index due to transaction and other expenses, including fees to service providers, borne by ETFs. Furthermore, there can be no assurance that the portfolio of securities, commodities and/or currencies purchased by an ETF will replicate a particular index. Some ETFs are actively managed and instead of replicating, they seek to outperform a particular index or basket or price of a commodity or currency.

Only Authorized Participants (APs) may engage in creation or redemption transactions directly with ETFs. ETF shares are sold to and redeemed by APs at net asset value only in large blocks called creation units and redemption units, respectively. Such market makers have no obligation to submit creation or redemption orders; consequently, there is no assurance that market makers will establish or maintain an active trading market for ETF shares. In addition, to the extent that APs exit the business or are unable to proceed with creation and/or redemption orders with respect to an ETF and no other AP is able to step forward to create or redeem units of an ETF, an ETF’s shares may be more likely to trade at a premium or discount to net asset value and possibly face trading halts and/or delisting. ETF shares may be purchased and sold by all other investors in secondary market trading on national securities exchanges, which allows investors to purchase and sell ETF shares at their market price throughout the day.

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

Exchange-Traded Notes

Exchange-Traded Notes (ETNs). The Fund may invest in 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

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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 Investments

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.

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 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 (CPI) 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

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and a 3% real rate of return coupon (payable 1.5% semi-annually), and inflation over the first six months were 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 semi-annual 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 CPI-U is a measurement of changes in the cost of living, made up of components such as housing, food, 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 other types of money market instruments in which those funds 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 FHLMC, as well as by nongovernment issuers such as commercial banks, savings and loan institutions, mortgage bankers and private mortgage insurance companies. Although certain

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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 (GSE) wholly-owned by public stockholders. Mortgage-related securities issued by FHLMC include FHLMC Mortgage Participation Certificates (also known as Freddie Macs) and are 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 GSE wholly-owned by public stockholders.

Another type of mortgage-related security issued by GSEs, such as FNMA and FHLMC, are credit risk transfer securities. GSE credit risk transfer securities are unguaranteed and unsecured fixed or floating rate general obligations issued by GSEs, which are typically issued at par and have stated final maturities. In addition, GSE credit risk transfer securities are structured so that: (i) interest is paid directly by the issuing GSE; and (ii) principal is paid by the issuing GSE in accordance with the principal payments and default performance of a pool of residential mortgage loans acquired by the GSE. The issuing GSE selects the pool of mortgage loans based on that GSE’s eligibility criteria, and the performance of the credit risk transfer securities will be directly affected by the selection of such underlying mortgage loans.

GSE credit risk transfer securities are not directly linked to or backed by the underlying mortgage loans. Thus, although the payment of principal and interest on such securities is tied to the performance of the pool of underlying mortgage loans, in no circumstances will the actual cash flow from the underlying mortgage loans be paid or otherwise made available to the holders of the securities and the holders of the securities will have no interest in the underlying mortgage loans. As a result, in the event that a GSE fails to pay principal or interest on its credit risk transfer securities or goes through a bankruptcy, insolvency or similar proceeding, holders of such credit risk transfer securities will have no direct recourse to the underlying mortgage loans. Such holders will receive recovery on par with other unsecured note holders (agency debentures) in such a scenario.

GSE credit risk transfer securities are issued in multiple tranches, which are allocated certain principal repayments and credit losses corresponding to the seniority of the particular tranche. Each tranche will have credit exposure to the underlying mortgage loans and the yield to maturity will be directly related to the amount and timing of certain defined credit events on the underlying mortgage loans, any prepayments by borrowers and any removals of a mortgage loan from the pool. Because credit risk exposure is allocated in accordance with the seniority of the particular tranche, principal losses will be first allocated to the most junior or subordinate tranches, thus making the most subordinate tranches subject to increased sensitivity to dramatic housing downturns. In addition, many credit risk transfer securities have collateral performance triggers (such as those based on credit enhancement, delinquencies or defaults) that could shut off principal payments to subordinate tranches.

The risks associated with an investment in GSE credit risk transfer securities will be different than the risks associated with an investment in mortgage-backed securities issued by GSEs, because some or all of the mortgage default or credit risk associated with the underlying mortgage loans in credit risk

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transfer securities is transferred to investors, such as the Fund. As a result, investors in GSE credit risk transfer securities could lose some or all of their investment in these securities if the underlying mortgage loans default.

The Fund may also invest in credit risk transfer securities issued by private entities, such as banks or other financial institutions. Credit risk transfer securities issued by private entities are structured similarly to those issued by GSEs, and are generally subject to the same types of risks, including credit, prepayment, extension, interest rate and market risks.

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

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

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

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

If 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.

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

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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.

Asset-Backed Securities. Asset-backed securities are interests in pooled mortgages, loans, receivables, or other assets. Payments of interest and repayment of principal may be largely dependent upon the cash flows generated by the assets backing the securities and, in certain cases, supported by letters of credit, surety bonds, or other credit enhancements. Asset-backed security values may also be affected by other factors including changes in interest rates, the availability of information concerning the pool and its structure, the creditworthiness of the servicing agent for the pool, the originator of the loans or receivables, or the entities providing the credit enhancement.

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 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 is 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

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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 the 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 securities (IOs) and principal only securities (POs). IOs and POs are stripped mortgage-backed securities representing interests in a pool of mortgages from which the cash flow has been separated into interest and principal components. IOs receive the interest portion of the cash flow while POs 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.

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.

Credit Linked Notes (CLNs). The Fund may invest in CLNs.

A CLN is a security structured and issued by an issuer, which may be a bank, broker or special purpose vehicle. If a CLN is issued by a special purpose vehicle, the special purpose vehicle will typically be collateralized by AAA-rated securities, but some CLNs are not collateralized. The performance and payment of principal and interest is tied to that of a reference obligation which may be a particular security, basket of securities, credit default swap, basket of credit default swaps, or index. The reference obligation may be denominated in foreign currencies. Risks of CLNs include those risks associated with the underlying reference obligation including, but not limited to, market risk, interest rate risk, credit risk, default risk and foreign currency risk. In the case of a CLN created with credit default swaps, the structure will be “funded” such that the par amount of the security will represent the maximum loss that could be incurred on the investment and no leverage is introduced. An investor in a CLN also bears counterparty risk or the risk that the issuer of the CLN will default or become bankrupt and not make timely payments of principal and interest on the structured security. Should the issuer default or declare bankruptcy, the CLN holder may not receive any compensation. In return for these risks, the CLN holder receives a

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higher yield. 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 over a definite period of time; however, it cannot be traded in the secondary market. A banker’s acceptance is a bill of exchange or time draft drawn on and accepted by a commercial bank.

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

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 SEC.

Synthetic Municipal Instruments. The Fund may invest in synthetic municipal instruments, the value of and return on which are derived from underlying securities. The types of 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 “trust certificate” evidences an interest in a trust entitling a certificate holder to 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 under certain conditions).

All synthetic municipal instruments must meet the minimum quality standards for the Fund’s investments and must present minimal credit risks. In selecting synthetic municipal instruments for the Fund, Invesco considers the creditworthiness of the issuer of the Underlying Bond, the sponsor and the party providing certificate holders with a conditional right to sell their certificates at stated times and prices (a demand feature).

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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 are typically debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, the interest on which, in the opinion of bond counsel or other counsel to the issuers of such securities, is, at the time of issuance, exempt from federal income tax. The issuers of municipal securities obtain funds for various public purposes, including the construction of a wide range of public facilities such as airports, highways, bridges, schools, hospitals, housing, mass transportation, streets and water and sewer works. Other public purposes for which municipal securities may be issued include refunding outstanding obligations, obtaining funds for general operating expenses and obtaining funds to lend to other public institutions and facilities. Certain types of municipal securities are issued to obtain funding for privately operated facilities. The credit and quality of private activity debt securities are dependent on the private facility or user, who is responsible for the interest payment and principal repayment.

The two major classifications of Municipal Securities are bonds and notes. Municipal bonds are municipal debt obligations in which the issuer is obligated to repay the original (or principal) payment amount on a certain maturity date along with interest. A municipal bond’s maturity date (the date when the issuer of the bond repays the principal) may be years in the future. Short-term bonds mature in one to three years, while long-term bonds usually do not mature for more than a decade. 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. Municipal notes also include tax, revenue notes and revenue and bond anticipation notes (discussed more fully below) of short maturity, generally less than three years, which are issued to obtain temporary funds for various public purposes.

Some bonds may be “callable,” allowing the issuer to redeem them before their maturity date. To protect bondholders, callable bonds may be issued with provisions that prevent them from being called for a period of time. Typically, that is 5 to 10 years from the issuance date. When interest rates decline, if the call protection on a bond has expired, it is more likely that the issuer may call the bond. If that occurs, the Fund might have to reinvest the proceeds of the called bond in investments that pay a lower rate of return, which could reduce the Fund’s yield.

Municipal debt securities may also be classified as general obligation or revenue obligations (or special delegation securities). General obligation securities are secured by the issuer’s pledge of its faith, credit and taxing power for the payment of principal and interest.

Revenue debt obligations, such as revenue bonds and revenue notes, are usually payable only from the revenues derived from a particular facility or class of facilities or, in some cases, from the proceeds of a special excise tax or other specific revenue source but not from the general taxing power. 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

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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.

Another type of revenue obligation is pre-refunded bonds, which are typically issued to refinance debt. In other words, pre-refunded bonds result from the advance refunding of bonds that are not currently redeemable. The proceeds from the issue of the lower yield and/or longer maturing pre-refunding bond will usually be used to purchase U.S. Government obligations, such as U.S. Treasury securities, which are held in an escrow account and used to pay interest and principal payments until the scheduled call date of the original bond issue occurs. Like other fixed income securities, pre-refunded bonds are subject to interest rate, market, credit, and reinvestment risks. However, because pre-refunded bonds are generally collateralized with U.S. Government obligations, such pre-refunded bonds have essentially the same risks of default as a AAA-rated security. The Fund will treat such pre-refunded securities as investment-grade securities, notwithstanding the fact that the issuer of such securities may have a lower rating (such as a below-investment-grade rating) from one or more rating agencies.

Within these principal classifications of municipal securities, there are a variety of types of municipal securities, including but not limited to, fixed and variable rate securities, variable rate demand notes, municipal leases, custodial receipts, participation certificates, inverse floating rate securities, and derivative municipal 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 (TOBs) or municipal bond trust certificates. Such instruments are typically created by a special purpose trust (the TOB Trust) that holds long-term fixed rate bonds, which are contributed by a Fund (the “underlying security”) and sells two classes of beneficial interests: short-term floating rate interests, which are sold to or held by third party investors (Floaters), and inverse floating residual interests, which are purchased by the Fund (Residuals). The Floaters have first priority on the cash flow from the bonds held by the TOB Trust and the Fund (as holder of the Residuals) is paid the residual cash flow from the bonds held by the TOB 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 primary risks associated with inverse floating rate securities are varying degrees of liquidity and decreases in the value of such securities in response to changes in interest rates to a greater extent than fixed rate securities 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 securities. In certain instances, the short-term floating rate notes created by the TOB Trust may not be able to be sold to third parties or, in the case of holders tendering (or putting) such notes for repayment of principal, may not be able to be remarketed to third parties. In such cases, the TOB Trust holding the fixed rate bonds may be collapsed with the entity that contributed the fixed rate bonds to the TOB Trust. In the case where a TOB Trust is collapsed with a Fund, the Fund will be required to repay the principal amount of the tendered securities, which may require the Fund to sell other portfolio holdings to raise cash to meet that obligation. The Fund could therefore be required to sell other portfolio holdings at a disadvantageous time or price to raise cash to meet this obligation, which risk will be heightened during

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times of market volatility, illiquidity or uncertainty. The embedded leverage in the TOB Trust could cause a Fund to lose more money than the value of the asset it has contributed to the TOB Trust and greater levels of leverage create the potential for greater losses. In addition, a Fund may enter into reimbursement agreements with the liquidity provider of certain TOB transactions in connection with certain residuals held by the Fund. These agreements commit a Fund to reimburse the liquidity provider to the extent that the liquidity provider must provide cash to a TOB Trust, including following the termination of a TOB Trust resulting from a mandatory tender event (“liquidity shortfall”). The reimbursement agreement will effectively make the Fund liable for the amount of the negative difference, if any, between the liquidation value of the underlying security and the purchase price of the floating rate notes issued by the TOB Trust.

Final rules implementing section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (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 preclude banking entities and their affiliates from sponsoring and/or providing services for existing TOB Trusts. A new TOB structure is being utilized by a Fund wherein the Fund, as holder of the residuals, will perform certain duties previously performed by banking entities as “sponsors” of TOB Trusts. These duties may be performed by a third-party service provider. A Fund’s expanded role under the new TOB structure may increase its operational and regulatory risk. The new structure is substantially similar to the previous structure; however, pursuant to the Volcker Rule, the remarketing agent would not be able to repurchase tendered floaters for its own account upon a failed remarketing. In the event of a failed remarketing, a banking entity serving as liquidity provider may loan the necessary funds to the TOB Trust to purchase the tendered floaters. The TOB Trust, not a Fund, would be the borrower and the loan from the liquidity provider will be secured by the purchased floaters now held by the TOB Trust. However, as previously described, a Fund would bear the risk of loss with respect to any liquidity shortfall to the extent it entered into a reimbursement agreement with the liquidity provider.

Further, the SEC and various banking agencies recently adopted rules implementing credit risk retention requirements for asset-backed securities (the Risk Retention Rules). The Risk Retention Rules require the sponsor of a TOB Trust to retain at least 5% of the credit risk of the underlying assets supporting the TOB Trust’s municipal bonds. As applicable, the Fund has adopted policies intended to comply with the Risk Retention Rules. The Risk Retention Rules may adversely affect the Fund’s ability to engage in TOB Trust transactions or increase the costs of such transactions in certain circumstances.

There can be no assurances that the new TOB structure will continue to be a viable form of leverage. Further, there can be no assurances that alternative forms of leverage will be available to the Fund in order to maintain current levels of leverage. Any alternative forms of leverage maybe less advantageous to a Fund, and may adversely affect the Fund’s net asset value, distribution rate and ability to achieve its investment objective.

Certificates of participation (or Participation certificates) are obligations issued by state or local governments or authorities to finance the acquisition of equipment and facilities. They may represent participations in a lease, an installment purchase contract or a conditional sales contract. These participation interests may give the purchaser an undivided interest in one or more underlying Municipal Securities. Municipal securities may not be backed by the faith, credit and taxing power of the issuer.

Custodial receipts are underwritten by securities dealers or banks and evidence ownership of future interest payments, principal payments or both on certain municipal securities.

Municipal leases are obligations issued by state and local governments or authorities to finance the acquisition of equipment and facilities. Municipal lease obligations, another type of Municipal Security, may take the form of a lease, an installment purchase contract or a conditional sales contract. Municipal lease obligations are issued by state and local governments and authorities to acquire land, equipment and facilities such as state and municipal vehicles, telecommunications and computer equipment, and other capital assets. Interest payments on qualifying municipal lease obligations are generally exempt from federal income taxes. Municipal lease obligations are generally subject to greater risks than general

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obligation or revenue bonds. State laws set forth requirements that states or municipalities must meet in order to issue municipal obligations, and such obligations may contain a covenant by the issuer to budget for, appropriate, and make payments due under the obligation. However, certain municipal lease obligations may contain “non-appropriation” clauses which provide that the issuer is not obligated to make payments on the obligation in future years unless funds have been appropriated for this purpose each year. If not enough money is appropriated to make the lease payments, the leased property may be repossessed as security for holders of the municipal lease obligation. In such an event, there is no assurance that the property’s private sector or re-leasing value will be enough to make all outstanding payments on the municipal lease obligation or that the payments will continue to be tax-free. Additionally, it may be difficult to dispose of the underlying capital asset in the event of non-appropriation or other default. Direct investments by the Fund in municipal lease obligations may be deemed illiquid and therefore subject to the Fund’s percentage limitations on illiquid investments and the risks of holding illiquid investments.

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.

Municipal Securities also include the following securities:

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After purchase by the Fund, an issue of Municipal Securities may cease to be rated by Moody’s or 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. To the extent that the ratings applied by Moody’s, S&P or another NRSRO to Municipal Securities may change as a result of changes in these rating systems, the Fund will attempt to use comparable credit quality ratings as standards for its investments in Municipal Securities.

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. The ratings of S&P and Moody’s represent their opinions of the quality of the municipal securities they undertake to rate. It should be emphasized, however, that ratings are general and are not absolute standards of quality. Consequently, municipal securities with the same maturity, coupon and rating may have different yields while municipal securities of the same maturity and coupon with different ratings may have the same yield.

Certain of the municipal securities in which the Fund may invest represent relatively recent innovations in the municipal securities markets and the markets for such securities may be less developed than the market for conventional fixed rate municipal securities.

Under normal market conditions, longer-term municipal securities generally provide a higher yield than shorter-term municipal securities. The Fund has no limitation as to the maturity of municipal securities in which they may invest. The Adviser may adjust the average maturity of the Fund’s portfolio from time to time depending on its assessment of the relative yields available on securities of different maturities and its expectations of future changes in interest rates.

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The net asset value of the Fund will change with changes in the value of its portfolio securities. With fixed income municipal securities, the net asset value of a Fund can be expected to change as general levels of interest rates fluctuate. When interest rates decline, the value of a portfolio invested in fixed income securities generally can be expected to rise. Conversely, when interest rates rise, the value of a portfolio invested in fixed income securities generally can be expected to decline. The prices of longer term municipal securities generally are more volatile with respect to changes in interest rates than the prices of shorter term municipal securities. Volatility may be greater during periods of general economic uncertainty.

Municipal Securities, like other debt obligations, are subject to the credit risk of nonpayment. The ability of issuers of municipal securities to make timely payments of interest and principal may be adversely impacted in general economic downturns and as relative governmental cost burdens are allocated and reallocated among federal, state and local governmental units. Such nonpayment would result in a reduction of income to the Fund, and could result in a reduction in the value of the municipal securities experiencing nonpayment and a potential decrease in the net asset value of the Fund. In addition, the Fund may incur expenses to work out or restructure a distressed or defaulted security.

The Fund may invest in Municipal Securities with credit enhancements such as letters of credit and municipal bond insurance. 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. Letters of credit are issued by a third party, usually a bank, to enhance liquidity and ensure repayment of principal and any accrued interest if the underlying Municipal Bond should default. These credit enhancements do not guarantee payments or repayments on the Municipal Securities and a downgrade in the credit enhancer could affect the value of the Municipal Security.

If the IRS determines that an issuer of a Municipal Security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on Municipal Securities or otherwise adversely affect the current federal or state tax status of Municipal Securities. For example, 2017 legislation commonly known as the Tax Cuts and Jobs Act repeals the exclusion from gross income for interest on pre-refunded municipal securities effective for such bonds issued after December 31, 2017.

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.

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 or debt obligations of foreign issuers denominated in foreign currencies. Debt obligations include, among others, bonds, notes, debentures or 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, each at the time of purchase. The descriptions of debt securities ratings may be found in Appendix A.

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

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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.

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 or determined to be below investment grade (as defined above in “Investment Grade Debt Obligations”) are commonly referred to 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 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 that 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.

Structured Notes and Indexed Securities. The Fund may invest in structured notes and 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 is 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

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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 reference 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.

Regulation S Securities. Regulation S securities of U.S. and non-U.S. issuers are offered through private offerings without registration with the SEC pursuant to Regulation S of the Securities Act of 1933 (1933 Act). Offerings of Regulation S securities may be conducted outside of the United States, and Regulation S securities may be relatively less liquid as a result of legal or contractual restrictions on resale. Although Regulation S securities may be resold in privately negotiated transactions, the price realized from these sales could be less than the originally paid by a Fund. Further, companies whose securities are not publicly traded may not be subject to the disclosure of other investor protection requirements that would be applicable is their securities were publicly traded. Accordingly, Regulation S securities may involve a high degree of business and financial risk and may result in substantial losses.

Other Investments

Real Estate Investment Trusts (REITs). The Fund may invest in equity interests 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 interest therein. A REIT may focus on particular projects, such as apartment complexes, or geographic regions, such as the southeastern United States, or both. Equity REITs invest the majority of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling property that has appreciated in value. Mortgage REITs invest the majority of their assets in real estate mortgages and derive income from the collection of interest payments.

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

Furthermore, for tax reasons, a REIT may impose limits on how much of its securities any one investor may own. These ownership limitations (also called “excess share provisions”) may be based on ownership of securities by multiple funds and accounts managed by the same investment adviser and typically result in adverse consequences (such as automatic divesture of voting and dividend rights for shares that exceed the excess share provision) to investors who exceed the limit. A REIT’s excess share provision may result in the Fund being unable to purchase (or otherwise obtain economic exposure to) the desired amounts of certain REITs. In some circumstances, the Fund may seek and obtain a waiver from a REIT to exceed the REIT’s ownership limitations without being subject to the adverse

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consequences of exceeding such limit were a waiver not obtained, provided that the Fund complies with the provisions of the waiver.

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 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 minimum quarterly distribution (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

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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 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 the Fund’s investment in the MLP and lower income to the Fund. Also, to the extent a distribution received by the Fund from an MLP is treated as a return of capital, the 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 the 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. For the Fund, the 1940 Act imposes the following restrictions on investments in other investment companies, including ETFs: (i) the Fund may not purchase more than 3% of the total outstanding voting stock of another investment company; (ii) the Fund may not invest more than 5% of its total assets in securities issued by another investment company; and (iii) the 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, a 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 the 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.

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In December 2018, the SEC issued a proposed rulemaking package related to investments in other investment vehicles that, if adopted, could require certain Funds to adjust their investments accordingly. These adjustments may have an impact on the Fund’s investment performance, strategy and process as well as those of the underlying investment vehicles.

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.

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 Fund’s 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.

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”, or 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

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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.    

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 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.

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 whereby the Fund buys or sells a security with payment and delivery taking place in the future.

Securities purchased or sold on a forward commitment, when-issued or delayed-delivery basis involve delivery and payment that take place in the future after the date of the commitment to purchase or sell the securities at a pre-determined price and/or yield. Settlement of such transactions normally occurs a month or more after the purchase or sale commitment is made. Typically, no interest accrues to the purchaser until the security is delivered. Forward commitments also include “to be announced” (TBA) dollar roll transactions, 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-backed securities that will be delivered to fulfill the trade obligation or terms of the contract are not specifically identified 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. No specific limitation exists as to the percentage of the Fund’s assets which may be used to acquire securities on a when-issued and delayed delivery basis.

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 the Fund. The 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 exchange of variation between the counterparties on a regular basis as the market value of the deliverable security fluctuates. Additionally, new regulatory rules anticipated to be effective in March 2020 will require the exchange of initial and/or variation margin between counterparties of forward settling TBA transactions involving U.S. Government agency and GSE sponsored mortgage-backed securities.

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

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agreement with the seller. The 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. The Fund will make payments throughout the term of the transaction as collateral values fluctuate to maintain full collateralization for the term of the transaction. Collateral will be marked-to-market every business day. If the seller defaults on the transaction or declares bankruptcy or insolvency, the 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, the 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. The Fund does not currently intend to engage in short sales of securities other than short sales of securities that the Fund owns or has the right to obtain (short sales against the box).

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 effected 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 treated as senior securities for purposes of the Fund’s fundamental investment limitation 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. Because the Fund may be required to pay dividends, interest, premiums and other expenses in connection with a short sale, any benefit for the Fund resulting from the short sale will be decreased, and the amount of any ultimate gain or loss will be decreased or increased, respectively, by the amount of such expenses.

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

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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.

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 1940 Act Laws, Interpretations and Exemptions (defined below). Such borrowings may be utilized (i) for temporary or emergency purposes; (ii) in anticipation of or in response to adverse market conditions; or, (iii) for cash management purposes. All borrowings are limited to an amount not exceeding 33 1/3% of 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.

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 their portfolio securities less likely.

The Fund may borrow from a bank, broker-dealer, or another Invesco Fund. Additionally, the Fund is permitted to temporarily carry a negative or overdrawn balance in their account with their custodian bank. To compensate the custodian bank for such overdrafts, the Fund may either (i) leave funds as a compensating balance in their 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. The Fund may not purchase additional securities when any borrowings from banks or broker-dealers exceed 5% of the Fund’s total assets or when any borrowings from an Invesco Fund are outstanding.

Lending Portfolio Securities. 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 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.

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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 involving the types of securities in which it is permitted to invest. 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. Repurchase agreements may be viewed as loans made by the Fund which are collateralized by the securities subject to repurchase.

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

If the seller of a repurchase agreement fails to repurchase the security in accordance with the terms of the agreement, 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 Fund may enter into repurchase agreements that involve securities that may be subject to a court-ordered or other “stay” in the event of the seller’s bankruptcy or insolvency. A “stay” will prevent the Fund from selling the securities it holds under a repurchase agreement until permitted by a court or other authority. In these situations the Fund may be subject to greater risk that the value of the securities may decline before they are sold, and that the Fund may 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 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 may be considered loans by the Fund under the 1940 Act.

Restricted and Illiquid Securities. The Fund may not acquire any illiquid investment if, immediately after the acquisition, the Fund would have invested more than 15% of its net assets in illiquid investments that are assets.

For purposes of the above 15% limitation, illiquid investment means any investment that the Fund reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without the sale or disposition significantly changing the market value of the investment, as determined pursuant to the 1940 Act and applicable rules and regulations thereunder.

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 adopted by the Trust on behalf of the Fund.

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. Pursuant to Rule 22e-4 under the 1940 Act, the Fund will consider whether securities purchased under Rule 144A are illiquid and thus subject to the Fund’s restriction on investment in illiquid securities. The determination of whether a Rule 144A security is liquid or illiquid will take into account relevant market, trading, and investment-specific considerations consistent with applicable SEC guidance. Additional factors that may be considered include: 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). 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.

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

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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. Leverage may make the Fund’s returns more volatile and increase the risk of loss. 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 the repurchase plus accrued interest. This practice of segregating assets is referred to as “cover.” Reverse repurchase agreements “covered” in this manner are not treated as senior securities for purposes of the Fund’s fundamental investment limitation on senior securities and borrowings. The liquidity of the 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.

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. 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. At the time the Fund enters into a dollar roll transaction, a sufficient amount of assets held by the Fund will be segregated to meet the forward commitment. Dollar roll transactions covered in this manner are not treated as senior securities for purposes of the Fund’s fundamental investment limitation on senior securities and borrowings.

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 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.

Derivatives

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

Derivatives may be used for “hedging,” which means that they may be used when the portfolio managers seek to protect the Fund’s investments from a decline in value, which could result from

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changes in interest rates, market prices, currency fluctuations and other market factors. Derivatives may also be used when the portfolio managers seek to increase liquidity, implement a tax or cash management strategy, invest in a particular stock, bond or segment of the market in a more efficient or less expensive way, modify the characteristics of the Fund’s portfolio investments, for example, duration, and/or to enhance return. However derivatives are used, their successful use is not assured and will depend upon, among other factors, the portfolio managers’ 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.

Commodity Exchange Act (CEA) Regulation and Exclusions:

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

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

Generally, the exclusion from CPO regulation on which Invesco relies requires the Fund to meet one of the following tests for its commodity interest positions, other than positions entered into for bona fide hedging purposes (as defined in the rules of the CFTC): either (1) the aggregate initial margin and premiums required to establish the Fund’s positions in commodity interests may not exceed 5% of the liquidation value of the Fund’s portfolio (after taking into account unrealized profits and unrealized losses on any such positions); or (2) the aggregate net notional value of the Fund’s commodity interest positions, determined at the time the most recent such position was established, may not exceed 100% of the liquidation value of the Fund’s portfolio (after taking into account unrealized profits and unrealized losses on any such positions). In addition to meeting one of these trading limitations, this Fund may not market itself as a commodity pool or otherwise as a vehicle for trading in the commodity futures, commodity options or swaps markets. If, in the future, the Fund can no longer satisfy these requirements, Invesco would withdraw its notice claiming an exclusion from the definition of a CPO, and Invesco would be subject to registration and regulation as a CPO with respect to the Fund, in accordance with the CFTC rules that allow for substituted compliance with CFTC disclosure and shareholder reporting requirements based on Invesco’s compliance with comparable SEC requirements. However, as a result of CFTC regulation with respect to the Fund, the Fund may incur additional compliance and other expenses.

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General risks associated with derivatives:

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

Counterparty Risk: The risk that a 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 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

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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.

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

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

General risks of hedging strategies using derivatives:

The use by the 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 the Fund is not 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 engage in certain strategies involving swaps to attempt to manage the risk of their investments or, in certain circumstances, for investment purposes (e.g., as a substitute for investing in securities).

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

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Comprehensive swaps regulation. The Dodd-Frank Act and related regulatory developments imposed comprehensive regulatory requirements on swaps and swap market participants. The 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. 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.

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

During the term of an uncleared swap, the Fund will be 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 all outstanding swaps between the parties were terminated on the date in question, including any early termination payments (variation margin). 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 will be required to pledge cash or other assets to cover its obligations to the Fund. However, the amount pledged will 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.

Currently, the Fund does not typically provide initial margin in connection with uncleared swaps. However, rules requiring initial margin to be posted by certain market participants for uncleared swaps have been adopted and are being phased in over time. When these rules take effect with respect to the Fund, if a Fund is deemed to have material swaps exposure, it will under applicable swap regulations be required to post initial margin in addition to variation margin.

Uncleared swaps are not traded on exchanges. As a result, swap participants may not be as protected as participants on organized exchanges. Performance of a swap agreement is the responsibility only of the swap counterparty and not of any exchange or clearinghouse. As a result, a Fund is subject to the risk that a counterparty will be unable or will refuse to perform under such agreement, including because of the counterparty’s bankruptcy or insolvency. The Fund risks the loss of the accrued but unpaid amounts under a swap agreement, which could be substantial, in the event of a default, insolvency or bankruptcy by a swap counterparty. In such an event, the Fund will have contractual remedies pursuant to the swap agreements, but bankruptcy and insolvency laws could affect the Fund’s rights as a creditor. If the counterparty’s creditworthiness declines, the value of a swap agreement would likely decline, potentially resulting in losses.

Cleared Swaps. Certain standardized swaps are subject to mandatory central clearing and exchange trading. Central clearing is intended to reduce counterparty credit risk and increase liquidity, but central clearing does not eliminate these risks and may involve additional costs and risks not involved with uncleared swaps. The Dodd-Frank Act and related regulatory developments will ultimately require the clearing and exchange-trading of many swaps. Mandatory exchange-trading and clearing will occur on a phased-in basis based on the type of market participant and CFTC approval of contracts for central

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clearing and public trading facilities making such cleared swaps available to trade. To date, the CFTC has designated only certain of the most common credit default index swaps and certain interest rate swaps as subject to mandatory clearing and certain public trading facilities have made these swaps available to trade, but it is expected that additional categories of swaps will in the future be designated as subject to mandatory clearing and trade execution requirements.

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

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

Central clearing is designed to reduce counterparty credit risk and increase liquidity compared to uncleared swaps because central clearing interposes the central clearinghouse as the counterparty to each participant’s swap, but it does not eliminate those risks completely. There is also a risk of loss by 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 or the central counterparty 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. Credit risk of cleared swap participants is concentrated in a few clearinghouses, and the consequences of insolvency of a clearinghouse are not clear.

With cleared swaps, the Fund may not be able to obtain terms as favorable 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 can require termination of existing cleared swap transactions upon the occurrence of certain events, and can also require increases in margin above the margin that is required at the initiation of the swap agreement.

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.

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

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

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

Currency Swaps: A currency swap is an agreement between two parties to exchange periodic cash flows on a notional amount of two or more currencies based on the relative value differential between them. Currency swaps typically involve the delivery of the entire notional values of the two designated currencies. In such a situation, the full notional value of a currency swap is subject to the risk that the other party to the swap will default on its contractual delivery obligations. 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

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

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.

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

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 and exchange trading.

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, the Fund receives the price appreciation of a commodity index, a portion of a commodity index or a single commodity in exchange for paying an agreed-upon fee.

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

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

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Options. The Fund may engage in certain strategies involving options to attempt to manage the risk of their investments or, 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 delivery of a cash settlement price, in the case of certain options, such as an index option and other cash-settled options). An option on a CDS or a futures contract (described below) gives the purchaser the right, but not the obligation, to enter into a CDS or assume a position in a futures contract.

Option transactions present the possibility of large amounts of exposure (or leverage), which may result in 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.

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

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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 no the obligation, to enter into a CDS at a specified future date 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.

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 reference asset must be sold (in the case of a call option) or purchased (in the case of a put option), if the option was structured as an American style option, because the option purchaser may notify the Fund of exercise at any time prior to the expiration of the option. In addition, if the option is cash-settled instead of deliverable, the Fund is obligated to pay the option purchaser the difference between the exercise price and the value of the underlying reference asset, instead of selling or purchasing the underlying reference asset, if the option is exercised. In general, options are rarely exercised 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 reference asset. In return for the premium received for writing a put option, the Fund assumes the risk that the price of the underlying reference asset will decline below the exercise price, in which case the put may be exercised and the Fund would suffer a loss.

In return for the premium received for writing a call option on a reference asset, the Fund foregoes the opportunity for profit from a price increase in the underlying reference asset above the exercise price so long as the option remains open, but retains the risk of loss should the price of the reference asset 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 reference asset, 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 reference asset, 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. However, once a Fund has received an exercise notice, it cannot effect a closing purchase transaction in order to terminate its obligation under

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the option and must deliver (for a call) or purchase (for a put) the underlying reference asset at the exercise price (if deliverable) or pay the difference between the exercise price and the value of the underlying reference asset (if cash-settled).

Purchasing Options. The Fund may purchase a put option on an underlying reference asset owned by the Fund in order to protect against an anticipated decline in the value of the underlying reference asset held by the Fund; purchase put options on underlying reference assets against which it has written other put options; or speculate 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 underlying reference asset is delivered upon the exercise of the put option. Conversely, if the underlying reference asset 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 reference asset for its portfolio, or on underlying reference assets against which it has written other call options. The Fund is not required to own the underlying reference asset 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 underlying reference asset at the exercise price of the call option plus the premium paid. So long as it holds a call option, rather than the underlying reference asset itself, the Fund is partially protected from any unexpected increase in the market price of the underlying reference asset. If the market price does not exceed the exercise price, the Fund could purchase the underlying reference asset 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.

Municipal Market Data Rate Locks. A Municipal Market Data Rate Lock (MMD Rate Lock) permits the Fund to lock in a specified municipal interest rate for a portion of its portfolio to preserve a return on a particular investment or a portion of its portfolio as a duration management technique or to protect against any increase in the price of securities to be purchased at a later date. MMD Rate Locks may be used for hedging purposes. An MMD Rate Lock is an agreement between two parties, the Fund and an MMD Rate Lock provider, pursuant to which the parties agree to make payments to each other on a notional amount, contingent upon whether the Municipal Market Data AAA General Obligation Scale is above or below a specified level on the expiration date of the contract. MMD Rate Locks involve the risk that municipal yields will move in the direction opposite than the direction anticipated by the Fund. The risk of loss with respect to MMD Rate Locks is limited to the amount of payments the Fund is contractually obligated to make. If the other party to an MMD Rate Lock defaults, the Fund’s risk of loss consists of the amount of payments that the Fund contractually is entitled to receive. If there is a default by the counterparty, the Fund may have contractual remedies pursuant to the agreements related to the transaction, but they could be difficult to enforce.

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

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 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.

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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. If the Fund purchases a right, it 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 standard binding agreement to buy or sell a specified amount of a specified security, or currency, commodity, interest rate or index (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 or certain exempt markets, including exempt boards of trade and electronic trading facilities, and are standardized as to maturity date and underlying financial instrument. Futures exchanges and trading thereon in the United States are regulated under the CEA and by the CFTC. Foreign futures exchanges or exempt markets and trading thereon are not regulated by the CFTC and are not subject to the same regulatory controls. In addition, futures contracts that are traded on non-U.S. exchanges or exempt markets, may not be as liquid as those purchased on CFTC-designated contract markets. For a further discussion of the risks associated with investments in foreign securities, see “Foreign Investments” above.

Brokerage fees are incurred when a futures contract is bought or sold, and margin deposits must be maintained at all times when a futures contract is outstanding. “Margin” for a futures contract is the amount of funds that must be deposited by 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 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

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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 and the FCM pays the Fund any excess gain over the margin amount.

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 effected by entering into an offsetting futures contract for the same aggregate amount of the identical financial instrument or currency and the same delivery date. There can be no assurance, however, that 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.

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

Types of Futures Contracts:

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

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

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.

Index Futures. An 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 securities comprising

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the index is made. Index futures can be based on stock, bond or other indices. Such indices cannot be purchased or sold directly.

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

On July 27, 2017, the head of the United Kingdom’s Financial Conduct Authority announced a desire to phase out the use of LIBOR by the end of 2021. There remains uncertainty regarding the future utilization of LIBOR and the nature of any replacement rate. As a result, any impact of a transition away from LIBOR on the Fund or the instruments in which the Fund invests cannot yet be determined. Industry initiatives are underway to identify alternative reference rates; however, there is no assurance that the composition or characteristics of any such alternative reference rate will be similar to or produce the same value or economic equivalence as LIBOR or that instruments using an alternative rate will have the same volume or liquidity. As a result, the transition process might lead to increased volatility and reduced liquidity in markets that currently rely on LIBOR to determine interest rates; a reduction in the value of some LIBOR-based investments; and/or costs incurred in connection with closing out positions and entering into new agreements. These effects could occur prior to the end of 2021 as the utility of LIBOR as a reference rate could deteriorate during the transition period.

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.

Pursuant to federal securities laws and regulations, the Fund’s use of options on futures contracts may require the Fund to set aside assets to reduce the risks associated with using 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 contracts to hedge against adverse movements in the foreign currencies in which portfolio securities are denominated. Certain Funds may also enter into forward foreign currency transactions for speculative purposes, including to seek additional income or increased returns for the Fund.

A forward foreign currency contract is an obligation to buy or sell a particular currency in exchange for another currency, which may be U.S. dollars at a specified price at a future date. Forward foreign currency contracts are typically individually negotiated and privately traded by currency traders and their customers in the interbank market. 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.

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

The 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 liabilities, if any), rather than the contract’s full notional value. By setting aside assets equal to its net obligations under forward foreign currency 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 was 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.

Receipt of Issuer’s Nonpublic Information

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

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disclose material nonpublic information in such communication. The Adviser or Sub-Advisers would be restricted from trading on the basis of such material nonpublic information, limiting their flexibility in managing the Fund and possibly impacting Fund performance.

Cybersecurity Risk

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

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 such Fund’s outstanding shares. Fundamental restrictions may be changed only by a vote of the lesser of (i) 67% or more of the Fund’s shares present at a meeting if the holders of more than 50% of the outstanding shares are present in person or represented by proxy, or (ii) more than 50% of the Fund’s outstanding shares. Any investment restriction, 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 “diversified company” as defined in the 1940 Act. The Fund will not purchase the securities of any issuer if, as a result, the Fund would fail to be a diversified company within the meaning of the 1940 Act, and the rules and regulations promulgated thereunder, as such statute, rules and regulations are amended from time to time or are interpreted from time to time by the SEC staff (collectively, the 1940 Act Laws and Interpretations) or except to the extent that the Fund may be permitted to do so by exemptive order or similar relief (collectively, with the 1940 Act Laws and Interpretations, the 1940 Act Laws, Interpretations and Exemptions). In complying with this restriction, however, the Fund may purchase securities of other investment companies to the extent permitted by the 1940 Act Laws, Interpretations and Exemptions.

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

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

(4)    The Fund will concentrate (as that term may be defined or interpreted by the 1940 Act Laws, Interpretations and Exemptions) its investments in the financial services sector.

(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 or sell physical commodities except to the extent permitted by the 1940 Act and any other governing statute, and by the rules thereunder, and by the SEC or other regulatory agency with authority over the Fund.

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(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.

Explanatory Note

For purposes of the Fund’s fundamental restriction related to physical commodities above, the Fund is currently permitted to invest in futures, swaps and other instruments on physical commodities to the extent disclosed in the Fund’s prospectuses or this SAI.

Non-Fundamental Restrictions. Non-fundamental restrictions may be changed for the Fund without shareholder approval.

(1)    In complying with the fundamental restriction regarding issuer diversification, the Fund will not, with respect to 75% of its total assets, purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities and securities issued by other investment companies), if, as a result, (i) more than 5% of the Fund’s total assets would be invested in the securities of that issuer, or (ii) the Fund would hold more than 10% of the outstanding voting securities of that issuer. The Fund may purchase securities of other investment companies as permitted by the 1940 Act Laws, Interpretations and Exemptions.

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

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

(3)    For purposes of the Fund’s fundamental investment restriction regarding sector concentration, the financial services sector includes the banking, diversified financials and insurance

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industries, and any other industry included in the financial services sector as defined by the industry classification system used by the Adviser.

(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 objective, policies, and restrictions as the Fund.

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

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

Portfolio Turnover

The Fund calculates its portfolio turnover rate by dividing the value of the lesser of purchases or sales of portfolio securities for the fiscal period by the monthly average of the value of portfolio securities owned by the Fund during the fiscal period. A 100% portfolio turnover rate would occur, for example, if all of the portfolio securities (other than short-term securities) were replaced once during the fiscal period. Portfolio turnover rates will vary from year to year, depending on market conditions. The Fund did not experience significant variation in portfolio turnover during the two most recently completed fiscal years ended August 31.

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 description of the basis on which employees of Invesco and its affiliates may release information about portfolio securities in certain contexts are provided below. As used in the Holdings Disclosure Policy and throughout the SAI, the term “portfolio holdings information” includes information with respect to the portfolio holdings of the Fund, including holdings that are derivatives and holdings held as short positions. Information generally excluded from “portfolio holdings information” includes, without limitation, (i) descriptions of allocations among asset classes, regions, countries, industries or sectors; (ii) aggregated data such as average or median ratios, market capitalization, credit quality or duration; (iii) performance attributions by asset class, country, industry or sector; (iv) aggregated risk statistics, analysis and simulations, such as stress testing; (v) the characteristics of the stock and bond components of the Fund’s portfolio holdings and other investment positions; (vi) the volatility characteristics of the Fund; (vii) information on how various weightings and factors contributed to Fund performance; (viii) various financial characteristics of the Fund or its underlying portfolio investments; and (ix) other information where, in the reasonable belief of the Fund’s Chief Compliance Officer (or a designee), the release of such information would not present risks of dilution, arbitrage, market timing, insider trading or other inappropriate trading for the Fund.

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Public release of portfolio holdings. The Fund discloses the following portfolio holdings information on http://www.invesco.com/us¹:

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 information pursuant to Non-Disclosure Agreement. Employees of Invesco and its affiliates may disclose non-public full portfolio holdings information on a selective basis only if Invesco approves the parties to whom disclosure of non-public full portfolio holdings information will be made. Invesco must determine that the proposed selective disclosure will be made for legitimate business purposes of the Fund and is in the best interest of the Fund’s shareholders. In making such determination, Invesco 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 information by (1) overseeing the implementation and enforcement of the Holdings Disclosure Policy and the Invesco Funds Code of Ethics by the Chief Compliance Officer (or his designee) of Invesco and the Invesco Funds and (2) considering reports and recommendations by the Chief Compliance Officer concerning any material compliance matters (as defined in Rule 38a-1 under the 1940 Act and Rule 206(4)-7 under the Investment Advisers Act of 1940, as amended (Advisers Act)) that may arise in connection with the Holdings Disclosure Policy. Pursuant to the Holdings Disclosure Policy, the Board receives reports on the specific types of situations in which Invesco proposes to provide such selective disclosure, and the situations where provided selective disclosure raises perceived conflicts of interest between shareholders of the Fund and Invesco or its affiliates. In any specific situation where Invesco addresses a perceived conflict, Invesco will report to the Board on the persons to whom such disclosures are to be made and the treatment of such conflict before agreeing to provide selective disclosure.

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

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In many cases, Invesco will disclose current portfolio holdings information 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 information will maintain the confidentiality of such portfolio holdings information 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 information on an ongoing basis.    

Invesco will also disclose non-public portfolio holdings information if such disclosure is required by applicable laws, rules or regulations, or by regulatory authorities having jurisdiction over Invesco and its affiliates or the Invesco Funds, and where there is no other way to transact the Fund’s business without disclosure of such portfolio holdings information.

The Holdings Disclosure Policy provides that the Fund, Invesco or any other party in connection with the disclosure of portfolio holdings information will not request, receive or accept any compensation (including compensation in the form of the maintenance of assets in the 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 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 information 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 investments or may state that the Fund has recently purchased or sold, one or more investments. The investments subject to these views and statements may be ones that were purchased or sold since the date on which portfolio holdings information was made available on the Fund’s website and therefore may not be reflected on the portfolio holdings disclosed on the website. Such views and statements may be made to various persons, including members of the press, shareholders in the Fund, persons considering investing in the Fund or representatives of such shareholders or potential shareholders, such as fiduciaries of a 401(k) plan and their advisers. The nature and content of the views and statements provided to each of these persons may differ.

Disclosure of portfolio holdings information to traders. Additionally, employees of Invesco and its affiliates may disclose one or more of the portfolio investments held by the Fund when purchasing and selling investments through broker-dealers, futures commissions merchants, clearing agencies and other counterparties, requesting bids on investments, 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

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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.