INVESTMENT POLICIES

The Portfolio may invest in the following types of investments, consistent with its investment strategies and objective. Please see the Prospectus for additional information regarding its principal investment strategies.

Bonds

The Portfolio may invest a portion of its assets in bonds. A bond is an interest-bearing security issued by a company, governmental unit or, in some cases, a non-U.S. entity. The issuer of a bond has a contractual obligation to pay interest at a stated rate on specific dates and to repay principal (the bond’s face value) periodically or on a specified maturity date; provided, however, a zero coupon bond pays no interest to its holder during its life. The value of a zero coupon bond to the Portfolio consists of the difference between such bond’s face value at the time of maturity and the price for which it was acquired, which may be an amount significantly less than its face value (sometimes referred to as a “deep discount” price).

An issuer may have the right to redeem or “call” a bond before maturity, in which case the investor may have to reinvest the proceeds at lower market rates. Most bonds bear interest income at a “coupon” rate that is fixed for the life of the bond. The value of a fixed rate bond usually rises when market interest rates fall, and falls when market interest rates rise. Accordingly, a fixed rate bond’s yield (income as a percent of the bond’s current value) may differ from its coupon rate as its value rises or falls. Fixed rate bonds generally are also subject to inflation risk, which is the risk that the value of the bond or income from the bond will be worth less in the future as inflation decreases the value of money. This could mean that, as inflation increases, the “real” value of the assets of the Portfolio holding fixed rate bonds can decline, as can the value of the Portfolio’s distributions. Other types of bonds bear income at an interest rate that is adjusted periodically. Because of their adjustable interest rates, the value of “floating-rate” or “variable-rate” bonds fluctuates much less in response to market interest rate movements than the value of fixed rate bonds. The Portfolio may treat some of these bonds as having a shorter maturity for purposes of calculating the weighted average maturity of its investment portfolio. Bonds may be senior or subordinated obligations. Senior obligations generally have the first claim on a corporation’s earnings and assets and, in the event of liquidation, are paid before subordinated obligations. Bonds may be unsecured (backed only by the issuer’s general creditworthiness) or secured (also backed by specified collateral).

The investment return of corporate bonds reflects interest on the bond and changes in the market value of the bond. The market value of a corporate bond may be affected by the credit rating of the corporation, the corporation’s performance and perceptions of the corporation in the market place. There is a risk that the issuers of the securities may not be able to meet their obligations on interest or principal payments at the time called for by such a security.

Cash Reserves

The Portfolio may hold portions of its assets in short-term debt instruments with remaining maturities of 397 days or less pending investment or to meet anticipated redemptions and day-to-day operating expenses. Short-term debt instruments consist of: (i) short-term obligations of the U.S. Government, its agencies, instrumentalities, authorities or political subdivisions; (ii) other short-term debt securities rated at the time of purchase Aa or higher by Moody’s Investors Service, Inc. (“Moody’s”) or AA or higher by S&P or, if unrated, of comparable quality in the opinion of SSGA FM; (iii) commercial paper; (iv) bank obligations, including negotiable certificates of deposit, time deposits and bankers’ acceptances; and (v) repurchase agreements. At the time the Portfolio invests in commercial paper, bank obligations or repurchase agreements, the issuer or the issuer’s parent must have outstanding debt rated Aa or higher by Moody’s or AA or higher by S&P or outstanding commercial paper or bank obligations rated Prime-1 by Moody’s or A-1 by S&P; or, if no such ratings are available, the instrument must be of comparable quality in the opinion of the Adviser. See Appendix A for more information on the ratings of debt instruments.

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Cleared Derivatives Transactions

Under recently adopted rules and regulations, transactions in some types of swaps are required to be centrally cleared. In a cleared derivatives transaction, the Portfolio’s counterparty to the transaction is a central derivatives clearing organization, or clearing house, rather than a bank or broker. Because the Portfolio is not a member of a clearing house, and only members of a clearing house can participate directly in the clearing house, the Portfolio holds cleared derivatives through accounts at clearing members. In cleared derivatives transactions, the Portfolio will make payments (including margin payments) to and receive payments from a clearing house through its accounts at clearing members. Clearing members guarantee performance of their clients’ obligations to the clearing house. Centrally cleared derivative arrangements may be less favorable to the Portfolio than bilateral (non-cleared) arrangements. For example, the Portfolio may be required to provide greater amounts of margin for cleared derivatives transactions than for bilateral derivatives transactions. Also, in contrast to bilateral derivatives transactions, in some cases following a period of notice to the Portfolio, a clearing member generally can require termination of existing cleared derivatives transactions at any time or an increase in margin requirements above the margin that the clearing member required at the beginning of a transaction. Clearing houses also have broad rights to increase margin requirements for existing transactions or to terminate transactions at any time. The Portfolio is subject to risk if it enters into a derivatives transaction that is required to be cleared (or which the Adviser expects to be cleared), and no clearing member is willing or able to clear the transaction on the Portfolio’s behalf. In that case, the transaction might have to be terminated, and the Portfolio could lose some or all of the benefit of the transaction, including loss of an increase in the value of the transaction and loss of hedging protection. In addition, the documentation governing the relationship between the Portfolio and clearing members is drafted by the clearing members and generally is less favorable to the Portfolio than typical bilateral derivatives documentation.

These clearing rules and other new rules and regulations could, among other things, restrict the Portfolio’s ability to engage in, or increase the cost to the Portfolio of, derivatives transactions, for example, by making some types of derivatives no longer available to the Portfolio, increasing margin or capital requirements, or otherwise limiting liquidity or increasing transaction costs. These regulations are new and evolving, so their potential impact on the Portfolio and the financial system are not yet known.

Commodities

General . The Portfolio may invest in commodities. There are several additional risks associated with transactions in commodity futures contracts, swaps on commodity futures contracts, commodity forward contracts and other commodities instruments. In the commodity instruments markets, producers of the underlying commodity may decide to hedge the price risk of selling the commodity by selling commodity instruments today to lock in the price of the commodity at delivery tomorrow. In order to induce speculators to purchase the other side of the same commodity instrument, the commodity producer generally must sell the commodity instrument at a lower price than the expected future spot price. Conversely, if most hedgers in the commodity instruments market are purchasing commodity instruments to hedge against a rise in prices, then speculators will only sell the other side of the commodity instrument at a higher future price than the expected future spot price of the commodity. The changing nature of the hedgers and speculators in the commodity markets will influence whether futures prices are above or below the expected future spot price, which can have significant implications for the Portfolio. If the nature of hedgers and speculators in commodity instruments markets has shifted when it is time for the Portfolio to reinvest the proceeds of a maturing contract in a new commodity instrument, the Portfolio might reinvest at a higher or lower future price, or choose to pursue other investments. The commodities which underlie commodity instruments may be subject to additional economic and non-economic variables, such as drought, floods, weather, livestock disease, embargoes, tariffs, and international economic, political and regulatory developments. These factors may have a larger impact on commodity prices and commodity-linked instruments than on traditional securities. Certain commodities are also subject to limited pricing flexibility because of supply and demand factors. Others are subject to broad price fluctuations as a result of the volatility of the prices for certain raw materials and the instability of supplies of other materials. These additional variables may create additional investment risks which subject the Portfolio’s investments to greater volatility than other investments. Also, unlike the financial instruments markets, in the commodity instruments markets there are costs of physical storage associated with purchasing the underlying commodity. The price of the commodity instruments contract will reflect the storage costs of purchasing the physical commodity, including the time value of money invested in the physical commodity. To the extent that the storage costs for an underlying commodity change while the Portfolio is invested in instruments on that commodity, the value of the commodity instrument may change proportionately. In addition, the ability of the Portfolio to invest directly in commodities and certain commodity-related securities and other instruments is subject to significant limitations in order to enable the Portfolio to maintain its status as a “regulated investment company” (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”).

The Portfolio’s ability to invest in commodities and commodity-related investments is limited by tax considerations and could bear on the ability of the Portfolio to qualify as a RIC. See “Taxes” below.

Commodity-Linked Investments . The Portfolio may invest in commodity-linked investments. The Portfolio may seek to provide exposure to the investment returns of real assets that trade in the commodity markets through commodity-linked derivative securities, such as structured notes, discussed below, which are designed to provide this exposure without direct investment in physical commodities or commodities futures contracts. Real assets are assets such as oil, gas, industrial and precious metals, livestock, and

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agricultural or meat products, or other items that have tangible properties, as compared to stocks or bonds, which are financial instruments. In choosing investments, the Adviser seeks to provide exposure to various commodities and commodity sectors. The value of commodity-linked derivative securities held by the Portfolio may be affected by a variety of factors, including, but not limited to, overall market movements and other factors affecting the value of particular industries or commodities, such as weather, disease, embargoes, acts of war or terrorism, or political and regulatory developments.

The prices of commodity-linked derivative securities may move in different directions than investments in traditional equity and debt securities when the value of those traditional securities is declining due to adverse economic conditions. As an example, during periods of rising inflation, debt securities have historically tended to decline in value due to the general increase in prevailing interest rates. Conversely, during those same periods of rising inflation, the prices of certain commodities, such as oil and metals, have historically tended to increase. Of course, there cannot be any guarantee that these investments will perform in that manner in the future, and at certain times the price movements of commodity-linked instruments have been parallel to those of debt and equity securities. Commodities have historically tended to increase and decrease in value during different parts of the business cycle than financial assets. Nevertheless, at various times, commodities prices may move in tandem with the prices of financial assets and thus may not provide overall portfolio diversification benefits. Under favorable economic conditions, the Portfolio’s investments may be expected to underperform an investment in traditional securities. Over the long term, the returns on the Portfolio’s investments are expected to exhibit low or negative correlation with stocks and bonds.

Because commodity-linked investments are available from a relatively small number of issuers, the Portfolio’s investments will be particularly subject to counterparty risk, which is the risk that the issuer of the commodity-linked derivative (which issuer may also serve as counterparty to a substantial number of the Portfolio’s commodity-linked and other derivative investments) will not fulfill its contractual obligations.

The Portfolio’s ability to invest in commodity-linked investments is limited by tax considerations and could bear on the ability of the Portfolio to qualify as a RIC. See “Taxes” below.

Credit Default Swaps

The Portfolio may enter into credit default swap transactions. A credit default swap is an agreement between the Portfolio and a counterparty that enables the Portfolio to buy or sell protection against a credit event related to a specified issuer. One party, acting as a “protection buyer,” make periodic payments to the other party, a “protection seller,” in exchange for a promise by the protection seller to make a payment to the protection buyer if a negative credit event (such as a delinquent payment or default) occurs with respect to a referenced bond or group of bonds. Acting as a protection seller allows the Portfolio to create an investment exposure similar to owning a bond. Acting as a protection buyer allows the Portfolio potentially to reduce its credit exposure to a bond it owns or to take a “short” position in a bond it does not own.

As the protection buyer in a credit default swap, the Portfolio may pay a premium (by means of periodic payments) in return for the right to deliver specified bonds or loans (such as those of a U.S. or foreign issuer or a basket of such issuers) to the protection seller and receive the par (or other agreed-upon) value upon default (or similar events) by the reference issuer. If no default occurs, the protection seller would keep the stream of payments and would have no further obligations to the Portfolio. As the protection buyer, the Portfolio bears the risk that the investment might expire worthless and/or that the protection seller may fail to satisfy its payment obligations to the Portfolio in the event of a default (or similar event). In addition, when the Portfolio is a protection buyer, the Portfolio’s investment would only generate income in the event of an actual default (or similar event) by the issuer of the underlying reference obligation.

The Portfolio may also use credit default swaps for investment purposes by selling a credit default swap, in which case, the Portfolio would be required to pay the par (or other agreed-upon) value of a referenced debt obligation to the protection buyer in the event of a default (or similar event) by the third-party reference issuer. In return for its obligation, the Portfolio would receive from the protection buyer a periodic stream of payments over the term of the contract. If no credit event occurs, the Portfolio would keep the stream of payments and would have no payment obligations. As the protection seller in a credit default swap, the Portfolio effectively adds economic leverage to its portfolio because, in addition to its total net assets, the Portfolio is subject to investment exposure on the notional amount of the swap.

The use of credit default swaps, like all swap agreements, is subject to certain risks, such as counterparty risk, leverage risk, hedging risk, correlation risk and liquidity risk. The Portfolio will enter into a credit default swap only with counterparties that the Adviser determines to meet certain standards of creditworthiness. If a counterparty’s creditworthiness declines, the value of the swap would likely decline because of the heightened risk that the counterparty may be unable to satisfy its payment obligations (particularly if the counterparty was the protection seller under the credit default swap contract). In addition, there is no guarantee that the Portfolio can eliminate its exposure under an outstanding swap agreement by entering into an offsetting swap agreement with the same or another party.

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The Portfolio’s exposure under a credit default swap may be considered leverage and as such be subject to the restrictions on leveraged derivatives.

Custodial Risk

There are risks involved in dealing with the custodians or brokers who hold the Portfolio’s investments or settle the Portfolio’s trades. It is possible that, in the event of the insolvency or bankruptcy of a custodian or broker, the Portfolio would be delayed or prevented from recovering its assets from the custodian or broker, or its estate, and may have only a general unsecured claim against the custodian or broker for those assets. In recent insolvencies of brokers or other financial institutions, the ability of certain customers to recover their assets from the insolvent’s estate has been delayed, limited, or prevented, often unpredictably, and there is no assurance that any assets held by the Portfolio with a custodian or broker will be readily recoverable by the Portfolio. In addition, there may be limited recourse against non-U.S. sub-custodians in those situations in which the Portfolio invests in markets where custodial and/or settlement systems and regulations are not fully developed, including emerging markets, and the assets of the Portfolio have been entrusted to such sub-custodians. SSGA FM or an affiliate may serve as the custodian of the Portfolio.

Eurodollar Certificates of Deposit (“ECDs”), Eurodollar Time Deposits (“ETDs”) and Yankee Certificates of Deposit (“YCDs”)

The Portfolio may invest in ECDs, ETDs and YCDs. ECDs and ETDs are U.S. dollar denominated certificates of deposit issued by non-U.S. branches of domestic banks and non-U.S. banks. YCDs are U.S. dollar denominated certificates of deposit issued by U.S. branches of non-U.S. banks.

Different risks than those associated with the obligations of domestic banks may exist for ECDs, ETDs and YCDs because the banks issuing these instruments, or their domestic or non-U.S. branches, are not necessarily subject to the same regulatory requirements that apply to domestic banks, such as loan limitations, examinations and reserve, accounting, auditing, recordkeeping and public reporting requirements. Obligations of non-U.S. issuers also involve risks such as future unfavorable political and economic developments, withholding tax, seizures of non-U.S. deposits, currency controls, interest limitations, and other governmental restrictions that might affect repayment of principal or payment of interest, or the ability to honor a credit commitment.

Foreign Currency Transactions

The Portfolio may enter into a variety of different foreign currency transactions, including, by way of example, currency forward transactions, spot transactions, futures and forward contracts, swaps, or options. Most of these transactions are entered into “over the counter,” and the Portfolio assumes the risk that the counterparty may be unable or unwilling to perform its obligations, in addition to the risk of unfavorable or unanticipated changes in the values of the currencies underlying the transactions. Over-the-counter currency transactions are typically uncollateralized, and the Portfolio may not be able to recover all or any of on the assets owed to it under such transactions if its counterparty should default. Many types of currency transactions are expected to continue to be traded over the counter even after implementation of the clearing requirements under the Dodd-Frank Wall Street Reform and Consumer Protection Act. In some markets or in respect of certain currencies, the Portfolio may be required, or agree, in SSGA FM’s discretion, to enter into foreign currency transactions via the custodian’s relevant sub-custodian. SSGA FM may be subject to a conflict of interest in agreeing to any such arrangements on behalf of the Portfolio. Such transactions executed directly with the sub-custodian are executed at a rate determined solely by such sub-custodian. Accordingly, the Portfolio may not receive the best pricing of such currency transactions. Recent regulatory changes in a number of jurisdictions may require that certain currency transactions be subject to central clearing, or be subject to new or increased collateral requirements. These changes could increase the costs of currency transactions to the Portfolio and may make certain transactions unavailable; they may also increase the credit risk of such transactions to the Portfolio.

Foreign Securities

The Portfolio is permitted to invest in foreign securities. Foreign securities include securities of foreign companies and foreign governments (or agencies or subdivisions thereof). If the Portfolio’s securities are held abroad, the countries in which such securities may be held and the sub-custodian holding them must be approved by the Board of Trustees of the Trust (the “Board of Trustees” or the “Board”) or its delegate under applicable rules adopted by the SEC. In buying foreign securities, the Portfolio may convert U.S. dollars into foreign currency, but only to effect securities transactions on foreign securities exchanges and not to hold such currency as an investment.

The globalization and integration of the world economic system and related financial markets have made it increasingly difficult to define issuers geographically. Accordingly, the Portfolio intends to construe geographic terms such as “foreign,” “non-U.S.”

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“European,” “Latin American,” and “Asian,” in the manner that affords to the Portfolio the greatest flexibility in seeking to achieve its investment objective(s). Specifically, in circumstances where the investment objective and/or strategy is to invest at least some percentage of the Portfolio’s assets in foreign securities, etc., the Portfolio will take the view that a security meets this description so long as the issuer of a security is tied economically to the particular country or geographic region indicated by words of the relevant investment objective and/or strategy (the “Relevant Language”). For these purposes the issuer of a security is deemed to have that tie if:

In addition, the Portfolio intends to treat derivative securities (e.g., call options) by reference to the underlying security. Conversely, if the investment objective and/or strategy of the Portfolio limits the percentage of assets that may be invested in “foreign securities,” etc. or prohibits such investments altogether, the Portfolio intends to categorize securities as “foreign,” etc. only if the security possesses all of the attributes described above in clauses (i), (ii) and (iii).

Investments in foreign securities involve special risks and considerations. As foreign companies are not generally subject to uniform accounting, auditing and financial reporting standards, practices and requirements comparable to those applicable to domestic companies, there may be less publicly available information about a foreign company than about a domestic company. For example, foreign markets have different clearance and settlement procedures. Delays in settlement could result in temporary periods when assets of the Portfolio are uninvested. The inability of the Portfolio to make intended security purchases due to settlement problems could cause it to miss certain investment opportunities. They may also entail certain other risks, such as the possibility of one or more of the following: imposition of dividend or interest withholding or confiscatory taxes, higher brokerage costs, thinner trading markets, currency blockages or transfer restrictions, expropriation, nationalization, military coups or other adverse political or economic developments; less government supervision and regulation of securities exchanges, brokers and listed companies; and the difficulty of enforcing obligations in other countries. Purchases of foreign securities are usually made in foreign currencies and, as a result, the Portfolio may incur currency conversion costs and may be affected favorably or unfavorably by changes in the value of foreign currencies against the U.S. dollar. Further, it may be more difficult for the Portfolio’s agents to keep currently informed about corporate actions which may affect the prices of portfolio securities. Communications between the United States and foreign countries may be less reliable than within the United States, thus increasing the risk of delayed settlements of portfolio transactions or loss of certificates for portfolio securities. Certain markets may require payment for securities before delivery. The Portfolio’s ability and decisions to purchase and sell portfolio securities may be affected by laws or regulations relating to the convertibility of currencies and repatriation of assets.

A number of current significant political, demographic and economic developments may affect investments in foreign securities and in securities of companies with operations overseas. Such developments include dramatic political changes in government and economic policies in several Eastern European countries and the republics composing the former Soviet Union, as well as the unification of the European Economic Community. The course of any one or more of these events and the effect on trade barriers, competition and markets for consumer goods and services are uncertain. Similar considerations are of concern with respect to developing countries. For example, the possibility of revolution and the dependence on foreign economic assistance may be greater in these countries than in developed countries. Management seeks to mitigate the risks associated with these considerations through diversification and active professional management.

Forward Commitments

The Portfolio may enter into contracts to purchase securities for a fixed price at a future date beyond customary settlement time (“forward commitments”), consistent with the Portfolio’s ability to manage its investment portfolio and meet redemption requests. Forward commitments may be considered securities in themselves, and involve a risk of loss if the value of the security to be purchased declines prior to the settlement date, which risk is in addition to the risk of decline in the value of the Portfolio’s other assets. Where such purchases are made through dealers, the Portfolio relies on the dealer to consummate the sale. The dealer’s failure to do so may result in the loss to the Portfolio of an advantageous yield or price.

Although the Portfolio will generally enter into forward commitments with the intention of acquiring securities for its portfolio or for delivery pursuant to options contracts it has entered into, the Portfolio may dispose of a commitment prior to settlement if the Adviser deems it appropriate to do so. The Portfolio may realize short-term profits or losses upon the sale of forward commitments. When

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effecting such transactions, cash or other liquid assets (such as liquid high quality debt obligations) held by the Portfolio of a dollar amount sufficient to make payment for the portfolio securities to be purchased will be segregated on the Portfolio’s records at the trade date and maintained until the transaction is settled. Such segregated assets will be marked to market on a daily basis, and if the market value of such assets declines, additional cash or assets will be segregated so that the market value of the segregated assets will equal the amount of such the Portfolio’s obligations. Forward commitments involve a risk of loss if the value of the security to be purchased declines prior to the settlement date, or if the other party fails to complete the transaction.

Futures Contracts and Options on Futures

The Portfolio may enter into futures contracts on securities in which it may invest or on indices comprised of such securities and may purchase and write call and put options on such contracts.

Futures contracts . A financial futures contract is a contract to buy or sell a specified quantity of financial instruments such as U.S. Treasury bills, notes and bonds at a specified future date at a price agreed upon when the contract is made. An index futures contract is a contract to buy or sell specified units of an index at a specified future date at a price agreed upon when the contract is made. The value of a unit is based on the current value of the index. Under such contracts no delivery of the actual securities making up the index takes place. Rather, upon expiration of the contract, settlement is made by exchanging cash in an amount equal to the difference between the contract price and the closing price of the index at expiration, net of variation margin previously paid. Futures contracts are traded in the United States only on commodity exchanges or boards of trade — known as “contract markets” — approved for such trading by the Commodity Futures Trading Commission (the “CFTC”), and must be executed through a futures commission merchant or brokerage firm which is a member of the relevant contract market.

Although many futures contracts by their terms call for actual delivery or acceptance of commodities or securities, in most cases the contracts are closed out before the settlement date without the making or taking of delivery, but rather by entering into an offsetting contract (a “closing transaction”). Upon entering into a futures contract, the Portfolio is required to deposit an initial margin with the futures broker. The initial margin serves as a “good faith” deposit that the Portfolio will honor its futures commitments. Subsequent payments (called “variation margin” or “maintenance margin”) to and from the broker are made on a daily basis as the price of the underlying security or commodity fluctuates, making the long and short positions in the futures contract more or less valuable, a process known as “marking to the market.” Futures contracts also involve brokerage costs. If the Portfolio is unable to enter into a closing transaction, the amount of the Portfolio’s potential loss may be unlimited.

The Portfolio will not commit more than 5% of the market value of its total assets to initial margin deposits on futures and premiums paid for options on futures.

Registration under the Commodity Exchange Act .

The Portfolio is operated by persons who have claimed an exclusion from the definition of the term “commodity pool operator” with respect to the Portfolio under the Commodity Exchange Act (the “CEA”), and therefore, is not subject to registration or regulation as a commodity pool operator under the CEA. As a result, the Portfolio is limited in its ability to trade instruments subject to the CFTC’s jurisdiction, including commodity futures (which include futures on broad-based securities indexes, interest rate futures and currency futures), options on commodity futures, certain swaps or other investments (whether directly or indirectly through investments in other investment vehicles).

Under this exclusion, the Portfolio must satisfy one of the following two trading limitations whenever it enters into a new commodity trading position: (1) the aggregate initial margin and premiums required to establish the Portfolio’s positions in CFTC-regulated instruments may not exceed 5% of the liquidation value of the Portfolio’s portfolio (after accounting for unrealized profits and unrealized losses on any such investments); or (2) the aggregate net notional value of such instruments, determined at the time the most recent position was established, may not exceed 100% of the liquidation value of the Portfolio’s portfolio (after accounting for unrealized profits and unrealized losses on any such positions). The Portfolio would not be required to consider its exposure to such instruments if they were held for “bona fide hedging” purposes, as such term is defined in the rules of the CFTC. In addition to meeting one of the foregoing trading limitations, the Portfolio may not market itself as a commodity pool or otherwise as a vehicle for trading in the markets for CFTC-regulated instruments.

Options on futures contracts . In return for the premium paid, options on futures contracts give the purchaser the right to assume a position in a futures contract at the specified option exercise price at any time during the period of the option. Options on futures are similar to options on securities except that options on futures 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 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 margin account

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which represents the amount by which the market price of the futures contract, at exercise, exceeds (in the case of a call) or is less than (in the case of a put) the exercise price of the option on the futures. If an option is exercised on the last trading day prior to its expiration date, the settlement will be made entirely in cash. Purchasers of options who fail to exercise their options prior to the exercise date suffer a loss of the premium paid.

As with options on securities, the holder or writer of an option may terminate his position by selling or purchasing an offsetting option. There is no guarantee that such closing transactions can be effected.

The Portfolio will be required to deposit initial margin and maintenance margin with respect to put and call options on futures contracts written by it pursuant to brokers’ requirements similar to those described above in connection with the discussion of futures contracts.

Risks of transactions in futures contracts and related options . Successful use of futures contracts by the Portfolio is subject to the Adviser’s ability to predict movements in various factors affecting financial markets. Compared to the purchase or sale of futures contracts, the purchase of call or put options on futures contracts involves less potential risk to the Portfolio because the maximum amount at risk is the premium paid for the options (plus transaction costs). However, there may be circumstances when the purchase of a call or put option on a futures contract would result in a loss to the Portfolio when the purchase or sale of a futures contract would not, such as when there is no movement in the prices of the hedged investments. The writing of an option on a futures contract involves risks similar to those risks relating to the sale of futures contracts.

The use of options and futures strategies involves the risk of imperfect correlation among movements in the prices of the securities underlying the futures and options purchased and sold by the Portfolio, of the options and futures contracts themselves, and, in the case of hedging transactions, of the securities which are the subject of a hedge. The successful use of these strategies further depends on the ability of the Adviser to forecast interest rates and market movements correctly.

There is no assurance that higher than anticipated trading activity or other unforeseen events might not, at times, render certain market clearing facilities inadequate, and thereby result in the institution by exchanges of special procedures which may interfere with the timely execution of customer orders.

To reduce or eliminate a position held by the Portfolio, the Portfolio may seek to close out such a position. The ability to establish and close out positions will be subject to the development and maintenance of a liquid secondary market. It is not certain that this market will develop or continue to exist for a particular futures contract or option. Reasons for the absence of a liquid secondary market on an exchange include the following: (i) there may be insufficient trading interest in certain contracts or options; (ii) restrictions may be imposed by an exchange on opening transactions or closing transactions or both; (iii) trading halts, suspensions or other restrictions may be imposed with respect to particular classes or series of contracts or options, or underlying securities; (iv) unusual or unforeseen circumstances may interrupt normal operations on an exchange; (v) the facilities of an exchange or a clearing corporation may not at all times be adequate to handle current trading volume; or (vi) one or more exchanges could, for economic or other reasons, decide or be compelled at some future date to discontinue the trading of contracts or options (or a particular class or series of contracts or options), in which event the secondary market on that exchange for such contracts or options (or in the class or series of contracts or options) would cease to exist, although outstanding contracts or options on the exchange that had been issued by a clearing corporation as a result of trades on that exchange would likely continue to be exercisable in accordance with their terms.

U.S. Treasury security futures contracts and options. Some U.S. Treasury security futures contracts require the seller to deliver, or the purchaser to take delivery of, the type of U.S. Treasury security called for in the contract at a specified date and price; others may be settled in cash. Options on U.S. Treasury security futures contracts give the purchaser the right in return for the premium paid to assume a position in a U.S. Treasury security futures contract at the specified option exercise price at any time during the period of the option.

Successful use of U.S. Treasury security futures contracts by the Portfolio is subject to the Adviser’s ability to predict movements in the direction of interest rates and other factors affecting markets for debt securities. For example, if the Portfolio has sold U.S. Treasury security futures contracts in order to hedge against the possibility of an increase in interest rates which would adversely affect the values of securities held in its portfolio, and the prices of the Portfolio’s securities increase instead as a result of a decline in interest rates, the Portfolio will lose part or all of the benefit of the increased value of its securities which it has hedged because it will have offsetting losses in its futures positions. In addition, in such situations, if the Portfolio has insufficient cash, it may have to sell securities to meet daily maintenance margin requirements at a time when it may be disadvantageous to do so.

There is also a risk that price movements in U.S. Treasury security futures contracts and related options will not correlate closely with price movements in markets for particular securities. For example, if the Portfolio has hedged against a decline in the values of tax-exempt securities held by it by selling Treasury security futures and the values of Treasury securities subsequently increase while the values of the Portfolio’s tax-exempt securities decrease, the Portfolio would incur losses on both the Treasury security futures contracts written by it and the tax-exempt securities held in its portfolio.

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Government Mortgage-Related Securities

The Government National Mortgage Association (“GNMA”) (also known as Ginnie Mae) is the principal federal government guarantor of mortgage-related securities. GNMA is a wholly owned U.S. Government corporation within the Department of Housing and Urban Development. It guarantees, with the full faith and credit of the United States, full and timely payment of all monthly principal and interest on its mortgage-related securities. GNMA pass-through securities are considered to have a relatively low risk of default in that (1) the underlying mortgage loan portfolio is comprised entirely of government-backed loans and (2) the timely payment of both principal and interest on the securities is guaranteed by the full faith and credit of the U.S. Government, regardless of whether they have been collected. GNMA pass-through securities are, however, subject to the same interest rate risk as comparable privately issued mortgage-related securities. Therefore, the effective maturity and market value of a fund’s GNMA securities can be expected to fluctuate in response to changes in interest rate levels.

Residential mortgage loans are also pooled by the Federal Home Loan Mortgage Corporation (“FHLMC”) (also known as Freddie Mac), a corporate instrumentality of the U.S. Government. The mortgage loans in FHLMC’s portfolio are not government backed; FHLMC, not the U.S. Government, guarantees the timely payment of interest and ultimate collection of principal on FHLMC securities. FHLMC also issues guaranteed mortgage certificates, on which it guarantees semiannual interest payments and a specified minimum annual payment of principal.

The Federal National Mortgage Association (“FNMA”) (also known as Fannie Mae) is a government-sponsored corporation owned entirely by private stockholders. It is subject to general regulation by the Secretary of Housing and Urban Development. FNMA purchases residential mortgages from a list of approved seller/servicers, which include savings and loan associations, savings banks, commercial banks, credit unions and mortgage bankers. Pass-through securities issued by FNMA are guaranteed as to timely payment of principal and interest only by FNMA, not the U.S. Government.

High Yield Securities

The Portfolio may invest a portion of its assets in high yield debt securities (commonly known as “junk bonds”). Investment in high yield securities generally provides greater income and increased opportunity for capital appreciation than investments in higher quality securities, but they also typically entail greater price volatility and credit risk. These high yield securities are regarded as predominantly speculative with respect to the issuer’s continuing ability to meet principal and interest payments. Analysis of the creditworthiness of issuers of debt securities that are high yield may be more complex than for issuers of higher quality debt securities. In addition, high yield securities are often issued by smaller, less creditworthy companies or by highly leveraged (indebted) firms, but can also be issued by governments. Such issuers are generally less able than more financially stable issuers to make scheduled payments of interest and principal. The risks posed by securities issued under such circumstances are substantial.

Investing in high yield debt securities involves risks that are greater than the risks of investing in higher quality debt securities. These risks include: (i) changes in credit status, including weaker overall credit conditions of issuers and risks of default; (ii) industry, market and economic risk; and (iii) greater price variability and credit risks of certain high yield securities such as zero coupon and payment-in-kind securities. While these risks provide the opportunity for maximizing return over time, they may result in greater volatility of the value of the Portfolio than a fund that invests in higher-rated securities.

Furthermore, the value of high yield securities may be more susceptible to real or perceived adverse economic, company or industry conditions than is the case for higher quality securities. The market values of certain of these lower-rated and unrated debt securities tend to reflect individual issuer developments to a greater extent than do higher-rated securities which react primarily to fluctuations in the general level of interest rates, and tend to be more sensitive to economic conditions than are higher-rated securities. Adverse market, credit or economic conditions could make it difficult at certain times to sell certain high yield securities held by the Portfolio.

The secondary market on which high yield securities are traded may be less liquid than the market for higher grade securities. Less liquidity in the secondary trading market could adversely affect the price at which the Portfolio could sell a high yield security, and could adversely affect the daily net asset value per share of the Portfolio. When secondary markets for high yield securities are less liquid than the market for higher grade securities, it may be more difficult to value the securities because there is less reliable, objective data available. However, an Index seeks to include primarily high yield securities that the Index provider believes have greater liquidity than the broader high yield securities market as a whole.

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The use of credit ratings as a principal method of selecting high yield securities can involve certain risks. For example, credit ratings evaluate the safety of principal and interest payments, not the market value risk of high yield securities. Also, credit rating agencies may fail to change credit ratings in a timely fashion to reflect events since the security was last rated.

Illiquid Securities

The Portfolio may invest in illiquid securities. The Portfolio will invest no more than 15% of its net assets in illiquid securities or securities that are not readily marketable, including repurchase agreements and time deposits of more than seven days’ duration. The absence of a regular trading market for illiquid securities imposes additional risks on investments in these securities. Illiquid securities may be difficult to value and may often be disposed of only after considerable expense and delay.

Investment-Grade Bonds

The Portfolio may invest in corporate notes and bonds that are rated investment-grade by a nationally recognized statistical rating organization (“NRSRO”) or, if unrated, are of comparable quality to the rated securities described above, as determined by the Adviser, in accordance with procedures established by the Board of Trustees. Investment-grade securities include securities rated Baa or higher by Moody’s or BBB- or higher by S&P (and securities of comparable quality); securities rated Baa or BBB may have speculative characteristics.

Lending of Fund Securities

The Portfolio may lend portfolio securities to brokers, dealers and other financial organizations in amounts up to [33 1/3%] of the total value of its assets. Any such loan must be continuously secured by collateral in cash or cash equivalents maintained on a current basis in an amount at least equal to the market value of the securities loaned by the Portfolio. The Portfolio would continue to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned, and would receive an additional return that may be in the form of a fixed fee or a percentage of the collateral. The Portfolio would have the right to call the loan and obtain the securities loaned at any time on notice of not more than five business days. In the event of bankruptcy or other default of the borrower, the Portfolio could experience both delays in liquidating the loan collateral or recovering the loaned securities and losses including (a) possible decline in the value of collateral or in the value of the securities loaned during the period while the Portfolio seeks to enforce its rights thereto, (b) possible sub-normal levels of income and lack of access to income during this period, and (c) expenses of enforcing its rights. The Portfolio’s securities lending agent may be an affiliate of the Adviser, and would be compensated by the Portfolio for its services.

Market Disruption and Geopolitical Risk

The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. War, terrorism, and related geopolitical events have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on U.S. and world economies and markets generally. Likewise, natural and environmental disasters and systemic market dislocations may be highly disruptive to economies and markets. Those events as well as other changes in non-U.S. and domestic economic and political conditions also could adversely affect individual issuers or related groups of issuers, securities markets, interest rates, credit ratings, inflation, investor sentiment, and other factors affecting the value of the Portfolio’s investments. Given the increasing interdependence between global economies and markets, conditions in one country, market, or region might adversely impact markets, issuers and/or foreign exchange rates in other countries, including the U.S. Continuing uncertainty as to the status of the Euro and the European Monetary Union (the “EMU”) has created significant volatility in currency and financial markets generally. Any partial or complete dissolution of the EMU, or any continued uncertainty as to its status, could have significant adverse effects on currency and financial markets, and on the values of the Portfolio’s investments.

Securities markets may be susceptible to market manipulation (e.g., the potential manipulation of the London Interbank Offered Rate (LIBOR)) or other fraudulent trade practices, which could disrupt the orderly functioning of these markets or adversely affect the value of investments traded in these markets, including investments of the Portfolio.

Recent political activity in the U.S. has increased the risk that the U.S. could default on some or any of its obligations. While it is impossible to predict the consequences of such an unprecedented event, it is likely that a default by the U.S. would be highly disruptive to the U.S. and global securities markets and could significantly impair the value of the Portfolio’s investments. Similarly, political events within the U.S. at times have resulted, and may in the future result, in a shutdown of government services, which could negatively affect the U.S. economy, decrease the value of many Portfolio investments, and increase uncertainty in or impair the operation of the U.S. or other securities markets.

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To the extent the Portfolio has focused its investments in the stock market index of a particular region, adverse geopolitical and other events could have a disproportionate impact on the Portfolio.

Mortgage-Backed Security Rolls

The Portfolio may enter into “forward roll” transactions with respect to mortgage-related securities issued by GNMA, FNMA or FHLMC. In a forward roll transaction, a fund will sell a mortgage-related security to a bank or other permitted entity and simultaneously agree to repurchase a similar security from the institution at a later date at an agreed upon price. The mortgage securities that are repurchased will typically bear the same interest rate as those sold, but generally will be collateralized by different pools of mortgages with different prepayment histories than those sold. A fund that engages in a forward roll transaction forgoes principal and interest paid on the securities sold during the roll period, but is compensated by the difference between the current sales price and the lower forward price for the future purchase. In addition, a fund earns interest by investing the transaction proceeds during the roll period. A forward roll transaction may create investment leverage. A fund is subject to the risk that the value of securities to be purchased pursuant to a forward roll transaction will decline over the roll period, and that the Portfolio’s counterparty may be unwilling or unable to perform its obligations to the Portfolio. Upon entering into a mortgage-backed security roll, the participating Portfolio will segregate on its records cash, US Government securities or other high-grade debt securities in an amount sufficient to cover to its obligation under the roll.

Mortgage-Related Securities

The Portfolio may invest in mortgage-related securities. Mortgage-related securities represent an interest in a pool of, or are secured by, mortgage loans. Mortgage-related securities may be issued or guaranteed by (i) US Government agencies or instrumentalities such as GNMA, FNMA and FHLMC or (ii) other issuers, including private companies.

Many mortgage-related securities provide regular payments which consist of interest and, in most cases, principal. In contrast, other forms of debt securities normally provide for periodic payment of interest in fixed amounts with principal payments at maturity or specified call dates. In effect, payments on many mortgage-related securities are a “pass-through” of the payments made by the individual borrowers on their mortgage loans, net of any fees paid to the issuer or guarantor of such securities.

Besides the scheduled repayment of principal, repayments of principal may result from the voluntary prepayment, refinancing or foreclosure of the underlying mortgage loans. If property owners make unscheduled prepayments of their mortgage loans, these prepayments will typically result in early payment of the applicable mortgage-related securities. The occurrence of mortgage prepayments is affected by a variety of factors including the level of interest rates, general economic conditions, the location and age of the mortgage, and other social and demographic conditions. During periods of falling interest rates, the rate of mortgage prepayments tends to increase, thereby tending to decrease the life of mortgage-related securities. During periods of rising interest rates, the rate of mortgage prepayments usually decreases, thereby tending to increase the life of mortgage-related securities.

Because of the possibility of prepayments (and due to scheduled repayments of principal), mortgage-related securities are less effective than other types of securities as a means of “locking in” attractive long-term interest rates. Prepayments would have to be reinvested at lower rates. As a result, these securities may have less potential for capital appreciation during periods of declining interest rates than other securities of comparable maturities, although they may have a similar risk of decline in market value during periods of rising interest rates. Prepayments may also significantly shorten the effective maturities of these securities, especially during periods of declining interest rates. Conversely, during periods of rising interest rates, a reduction in prepayments may increase the effective maturities of these securities, subjecting them to a greater risk of decline in market value in response to rising interest rates than traditional debt securities, and, therefore, potentially increasing the volatility of the Portfolio.

Collateralized mortgage obligations (“CMOs”) may be issued by a U.S. Government agency or instrumentality or by a private issuer. CMOs are typically structured with classes or series that have different maturities and are generally retired in sequence. Each class of obligations receives periodic interest payments according to its terms. However, monthly principal payments and any prepayments from the collateral pool are generally paid first to the holders of the most senior class. Thereafter, payments of principal are generally allocated to the next most senior class of obligations until that class of obligations has been fully repaid. Any or all classes of obligations of a CMO may be paid off sooner than expected because of an increase in the payoff speed of the pool. Changes in prepayment rates may have significant effects on the values and the volatility of the various classes and series of a CMO. Payment of interest or principal on some classes or series of a CMO may be subject to contingencies or some classes or series may bear some or all of the risk of default on the underlying mortgages.

Stripped mortgage-related securities are usually structured with two classes that receive different portions of the interest and principal distributions on a pool of mortgage loans. The yield to maturity on an interest only or “IO” class of stripped mortgage-related securities is extremely sensitive not only to changes in prevailing interest rates but also to the rate of principal payments (including prepayments) on the underlying assets. A rapid rate of principal prepayments may have a measurable adverse effect on the Portfolio’s

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yield to maturity to the extent it invests in IOs. If the assets underlying the IO experience greater than anticipated prepayments of principal, the Portfolio may fail to recoup fully, or at all, its initial investment in these securities. Conversely, principal only securities or “POs” tend to increase in value if prepayments are greater than anticipated and decline if prepayments are slower than anticipated. The secondary market for stripped mortgage-related securities may be more volatile and less liquid than that for other mortgage-related securities, potentially limiting the Portfolio’s ability to buy or sell those securities at any particular time.

Options

The Portfolio may purchase and sell put and call options to enhance investment performance and to protect against changes in market prices. There is no assurance that the Portfolio’s use of put and call options will achieve its desired objective, and the Portfolio’s use of options may result in losses to the Portfolio.

A call option gives the holder the right to purchase, and obligates the writer to sell, a security at the exercise price at any time before the expiration date. A call option is “covered” if the writer, at all times while obligated as a writer, either owns the underlying securities (or comparable securities satisfying the cover requirements of the securities exchanges), or has the right to acquire such securities through immediate conversion of securities. The Portfolio may write covered call options or uncovered call options.

Covered call options. The Portfolio may write (i.e., sell) covered call options to realize a greater current return through the receipt of premiums than it would realize on its securities alone. Such option transactions may also be used as a limited form of hedging against a decline in the price of securities owned by the Portfolio.

The Portfolio will receive a premium from writing a call option, which increases the Portfolio’s return on the underlying security in the event the option expires unexercised or is closed out at a profit. The amount of the premium reflects, among other things, the relationship between the exercise price and the current market value of the underlying security, the volatility of the underlying security, the amount of time remaining until expiration, current interest rates, and the effect of supply and demand in the options market and in the market for the underlying security.

In return for the premium received when it writes a covered call option, the Portfolio gives up some or all of the opportunity to profit from an increase in the market price of the securities covering the call option during the life of the option. The Portfolio retains the risk of loss should the price of such securities decline. If the option expires unexercised, the Portfolio realizes a gain equal to the premium, which may be offset by a decline in price of the underlying security. If the option is exercised, the Portfolio realizes a gain or loss equal to the difference between the Portfolio’s cost for the underlying security and the proceeds of sale (exercise price minus commissions) plus the amount of the premium.

The Portfolio may terminate a call option that it has written before it expires by entering into a closing purchase transaction. The Portfolio may enter into closing purchase transactions in order to free itself to sell the underlying security or to write another call on the security, realize a profit on a previously written call option, or protect a security from being called in an unexpected market rise. Any profits from a closing purchase transaction may be offset by a decline in the value of the underlying security. Conversely, because increases in the market price of a call option will generally reflect increases in the market price of the underlying security, any loss resulting from a closing purchase transaction is likely to be offset in whole or in part by unrealized appreciation of the underlying security owned by the Portfolio.

Uncovered call options. Writing uncovered call options may enable the Portfolio to realize income without committing capital to the ownership of the underlying securities or instruments, however writing uncovered calls are riskier than writing covered calls because there is no underlying security held by the Portfolio that can act as a partial hedge. When the Portfolio has written an uncovered call option, the Portfolio will not necessarily hold securities offsetting the risk to the Portfolio. As a result of writing a call option without holding the underlying the securities, if the call option were exercised, the Portfolio might be required to purchase the security that is the subject of the call at the market price at the time of exercise. The Portfolio’s exposure on such an option is theoretically unlimited. There is also a risk, especially with less liquid preferred and debt securities, that the security may not be available for purchase. Uncovered calls have speculative characteristics.

Covered put options. The Portfolio may write covered put options in order to enhance its current return. Such options transactions may also be used as a limited form of hedging against an increase in the price of securities that the Portfolio plans to purchase. A put option gives the holder the right to sell, and obligates the writer to buy, a security at the exercise price at any time before the expiration date. A put option may be “covered” if the writer earmarks or otherwise segregates liquid assets equal to the price to be paid if the option is exercised minus margin on deposit.

By writing a put option, the Portfolio assumes the risk that it may be required to purchase the underlying security for an exercise price higher than its then current market value, resulting in a potential capital loss unless the security later appreciates in value.

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The Portfolio may terminate a put option that it has written before it expires by entering into a closing purchase transaction. Any loss from this transaction may be partially or entirely offset by the premium received on the terminated option.

Purchasing put and call options. The Portfolio may also purchase put options to protect portfolio holdings against a decline in market value. This protection lasts for the life of the put option because the Portfolio, as a holder of the option, may sell the underlying security at the exercise price regardless of any decline in its market price. In order for a put option to be profitable, the market price of the underlying security must decline sufficiently below the exercise price to cover the premium and transaction costs that the Portfolio must pay. These costs will reduce any profit the Portfolio might have realized had it sold the underlying security instead of buying the put option.

The Portfolio may purchase call options to hedge against an increase in the price of securities that the Portfolio wants ultimately to buy. Such hedge protection is provided during the life of the call option since the Portfolio, as holder of the call option, is able to buy the underlying security at the exercise price regardless of any increase in the underlying security’s market price. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the exercise price to cover the premium and transaction costs. These costs will reduce any profit the Portfolio might have realized had it bought the underlying security at the time it purchased the call option.

The Portfolio may also purchase put and call options to attempt to enhance its current return.

Options on foreign securities. The Portfolio may purchase and sell options on foreign securities if the Adviser believes that the investment characteristics of such options, including the risks of investing in such options, are consistent with the Portfolio’s investment objective. It is expected that risks related to such options will not differ materially from risks related to options on U.S. securities. However, position limits and other rules of foreign exchanges may differ from those in the United States. In addition, options markets in some countries, many of which are relatively new, may be less liquid than comparable markets in the United States.

Options on securities indices. The Portfolio may write or purchase options on securities indices. Index options are similar to options on individual securities in that the purchaser of an index option acquires the right to buy (in the case of a call) or sell (in the case of a put), and the writer undertakes the obligation to sell or buy (as the case may be), units of an index at a stated exercise price during the term of the option. Instead of the right to take or make actual delivery of securities, the holder of an index option has the right to receive a cash “exercise settlement amount.” This amount is equal to the amount by which the fixed exercise price of the option exceeds (in the case of a put) or is less than (in the case of a call) the closing value of the underlying index on the date of the exercise, multiplied by a fixed “index multiplier.”

Price movements in securities which the Portfolio owns or intends to purchase probably will not correlate perfectly with movements in the level of a securities index and, therefore, if the Portfolio uses an option for hedging purposes, it bears the risk of a loss on a securities index option which is not completely offset by movements in the price of such securities. Because securities index options are settled in cash, a call writer cannot determine the amount of its settlement obligations in advance and, unlike call writing on a specific security, cannot provide in advance for, or cover, its potential settlement obligations by acquiring and holding underlying securities. The Portfolio may, however, cover call options written on a securities index by holding a mix of securities which substantially replicate the movement of the index or by holding a call option on the securities index with an exercise price no higher than the call option sold.

Compared to the purchase or sale of futures contracts, the purchase of call or put options on an index involves less potential risk to the Portfolio because the maximum amount at risk is the premium paid for the options plus transactions costs. The writing of a put or call option on an index involves risks similar to those risks relating to the purchase or sale of index futures contracts.

Risks involved in the use of options. The successful use of the Portfolio’s options strategies depends on the ability of the Adviser to forecast correctly interest rate and market movements. For example, if the Portfolio were to write a call option based on the Adviser’s expectation that the price of the underlying security would fall, but the price were to rise instead, the Portfolio could be required to sell the security upon exercise at a price below the current market price. Similarly, if the Portfolio were to write a put option based on the Adviser’s expectation that the price of the underlying security would rise, but the price were to fall instead, the Portfolio could be required to purchase the security upon exercise at a price higher than the current market price.

When the Portfolio purchases an option, it runs the risk that it will lose its entire investment in the option in a relatively short period of time, unless the Portfolio exercises the option or enters into a closing sale transaction before the option’s expiration. If the price of the underlying security does not rise (in the case of a call) or fall (in the case of a put) to an extent sufficient to cover the option premium and transaction costs, the Portfolio will lose part or all of its investment in the option. This contrasts with an investment by the Portfolio in the underlying security, since the Portfolio will not realize a loss if the security’s price does not change.

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The effective use of options also depends on the Portfolio’s ability to terminate option positions at times when the Adviser deems it desirable to do so. There is no assurance that the Portfolio will be able to effect closing transactions at any particular time or at an acceptable price.

If a secondary market in options were to become unavailable, the Portfolio could no longer engage in closing transactions. Lack of investor interest might adversely affect the liquidity of the market for particular options or series of options. A market may discontinue trading of a particular option or options generally. In addition, a market could become temporarily unavailable if unusual events — such as volume in excess of trading or clearing capability — were to interrupt its normal operations.

A market may at times find it necessary to impose restrictions on particular types of options transactions, such as opening transactions. For example, if an underlying security ceases to meet qualifications imposed by the market or the Options Clearing Corporation, new series of options on that security will no longer be opened to replace expiring series, and opening transactions in existing series may be prohibited. If an options market were to become unavailable, the Portfolio as a holder of an option would be able to realize profits or limit losses only by exercising the option, and the Portfolio, as option writer, would remain obligated under the option until expiration or exercise.

Disruptions in the markets for the securities underlying options purchased or sold by the Portfolio could result in losses on the options. If trading is interrupted in an underlying security, the trading of options on that security is normally halted as well. As a result, the Portfolio as purchaser or writer of an option will be unable to close out its positions until options trading resumes, and it may be faced with considerable losses if trading in the security reopens at a substantially different price. In addition, the Options Clearing Corporation or options markets may impose exercise restrictions. If a prohibition on exercise is imposed at the time when trading in the option has also been halted, the Portfolio as purchaser or writer of an option will be locked into its position until one of the two restrictions has been lifted. If the Options Clearing Corporation were to determine that the available supply of an underlying security appears insufficient to permit delivery by the writers of all outstanding calls in the event of exercise, it may prohibit indefinitely the exercise of put options. The Portfolio, as holder of such a put option, could lose its entire investment if the prohibition remained in effect until the put option’s expiration.

Foreign-traded options are subject to many of the same risks presented by internationally-traded securities. In addition, because of time differences between the United States and various foreign countries, and because different holidays are observed in different countries, foreign options markets may be open for trading during hours or on days when U.S. markets are closed. As a result, option premiums may not reflect the current prices of the underlying interest in the United States.

Over-the-counter (“OTC”) options purchased by the Portfolio and assets held to cover OTC options written by the Portfolio may, under certain circumstances, be considered illiquid securities for purposes of any limitation on the Portfolio’s ability to invest in illiquid securities.

Other Asset-Backed Securities

The Portfolio may invest in asset-backed securities that are not mortgage-related. Asset-backed securities other than mortgage-related securities represent undivided fractional interests in pools of instruments, such as consumer loans, and are typically similar in structure to mortgage-related pass-through securities. Payments of principal and interest are passed through to holders of the securities and are typically supported by some form of credit enhancement, such as a letter of credit, surety bond, limited guarantee by another entity, or by priority to certain of the borrower’s other securities. The degree of credit-enhancement, if any, varies, applying only until exhausted and generally covering only a fraction of the security’s par value.

The value of such asset-backed securities is affected by changes in the market’s perception of the asset backing the security, changes in the creditworthiness of the servicing agent for the instrument pool, the originator of the instruments, or the financial institution providing any credit enhancement and the expenditure of any portion of any credit enhancement. The risks of investing in asset-backed securities are ultimately dependent upon payment of the underlying instruments by the obligors, and the Portfolio would generally have no recourse against the obligee of the instruments in the event of default by an obligor. The underlying instruments are subject to prepayments which shorten the duration of asset-backed securities and may lower their return, in generally the same manner as described above for prepayments of pools of mortgage loans underlying mortgage-related securities.

Purchase of Other Investment Company Shares

The Portfolio may, to the extent permitted under the 1940 Act and exemptive rules and orders thereunder, invest in shares of other investment companies, which include funds managed by SSGA FM, which invest exclusively in money market instruments or in investment companies with investment policies and objectives which are substantially similar to the Portfolio’s. These investments may be made temporarily, for example, to invest uncommitted cash balances or, in limited circumstances, to assist in meeting shareholder redemptions.

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Real Estate Investment Trusts (“REITs”)

The Portfolio may invest in REITs. REITs pool investor’s funds for investment primarily in income producing real estate or real estate loans or interests. A REIT is not taxed on income distributed to shareholders if it complies with several requirements relating to its organization, ownership, assets, and income and a requirement that it distribute to its shareholders at least 90% of its taxable income (other than net capital gains) for each taxable year. REITs can generally be classified as Equity REITs, Mortgage REITs and Hybrid REITs. Equity REITs, which invest the majority of their assets directly in real property, derive their income primarily from rents. Equity REITs can also realize capital gains by selling properties that have appreciated in value. Mortgage REITs, which invest the majority of their assets in real estate mortgages, derive their income primarily from interest payments. Hybrid REITs combine the characteristics of both Equity REITs and Mortgage REITs. The Portfolio will not invest in real estate directly, but only in securities issued by real estate companies. However, the Portfolio may be subject to risks similar to those associated with the direct ownership of real estate (in addition to securities markets risks) because of its policy of concentration in the securities of companies in the real estate industry. These include declines in the value of real estate, risks related to general and local economic conditions, dependency on management skill, heavy cash flow dependency, possible lack of availability of mortgage funds, overbuilding, extended vacancies of properties, increased competition, increases in property taxes and operating expenses, changes in zoning laws, losses due to costs resulting from the clean-up of environmental problems, liability to third parties for damages resulting from environmental problems, casualty or condemnation losses, limitations on rents, changes in neighborhood values, the appeal of properties to tenants and changes in interest rates. Investments in REITs may subject Portfolio shareholders to duplicate management and administrative fees.

In addition to these risks, Equity REITs may be affected by 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. Further, Equity and Mortgage REITs are dependent upon management skills and generally may not be diversified. Equity and Mortgage REITs are also subject to heavy cash flow dependency, defaults by borrowers and self-liquidation. In addition, if applicable, Equity and Mortgage REITs could possibly fail to qualify for the beneficial tax treatment available to REITs under the Code, or to maintain their exemptions from registration under the 1940 Act. The above factors may also adversely affect a borrower’s or a lessee’s ability to meet its obligations to the REIT. In the event of a default by a borrower or lessee, the REIT may experience delays in enforcing its rights as a mortgagee or lessor and may incur substantial costs associated with protecting investments.

Repurchase Agreements

The Portfolio may enter into repurchase agreements with banks and other financial institutions, such as broker-dealers. Under a repurchase agreement, the Portfolio purchases securities from a financial institution that agrees to repurchase the securities at the Portfolio’s original purchase price plus interest within a specified time (normally one business day). The Portfolio will limit repurchase transactions to those member banks of the Federal Reserve System and broker-dealers whose creditworthiness the Adviser considers satisfactory. Should the counterparty to a transaction fail financially, the Portfolio may encounter delay and incur costs before being able to sell the securities, or may be prevented from realizing on the securities. Further, the amount realized upon the sale of the securities may be less than that necessary to fully compensate the Portfolio.

Reverse Repurchase Agreements

The Portfolio may enter into reverse repurchase agreements. Under a reverse repurchase agreement, the Portfolio sells portfolio securities to a financial institution in return for cash in an amount equal to a percentage of the portfolio securities’ market value and agrees to repurchase the securities at a future date at a prescribed repurchase price equal to the amount of cash originally received plus interest on such amount. The Portfolio retains the right to receive interest and principal payments with respect to the securities while they are in the possession of the securities. Reverse repurchase agreements may create investment leverage and involve the risk that the market value of securities sold by the Portfolio may decline below the price at which it is obligated to repurchase the securities. Reverse repurchase agreements also involve a risk of default by the counterparty, which may adversely affect the Portfolio’s ability to reacquire the underlying securities.

Section 4(a)(2) Commercial Paper/Rule 144A Securities

The Portfolio may also invest in commercial paper issued in reliance on the private placement exemption from registration afforded by Section 4(a)(2) of the Securities Act of 1933, as amended (“1933 Act”) (“Section 4(a)(2) paper”) or in securities that can be offered and sold only to “qualified institutional buyers” under Rule 144A of the 1933 Act (“Rule 144A securities”).

Section 4(a)(2) paper is restricted as to disposition under the federal securities laws and generally is sold to institutional investors that agree that they are purchasing the paper for investment and not with a view to public distribution. Any resale by the purchaser must be a transaction exempt from the registration requirements of the 1933 Act. Section 4(a)(2) paper normally is resold to other institutional investors like the Portfolio through or with the assistance of the issuer or investment dealers that make a market in Section 4(a)(2) paper. Rule 144A securities generally must be sold only to other institutional investors.

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Section 4(a)(2) paper and Rule 144A securities will not be considered illiquid for purposes of the Portfolio’s percentage limitations on illiquid securities when the Adviser (pursuant to guidelines adopted by the Board of Trustees) determines that a liquid trading market exists for the securities in question. There can be no assurance that a liquid trading market will exist at any time for any particular Section 4(a)(2) paper or Rule 144A securities.

Total Return Swaps, Equity Swaps and Interest Rate Swaps

The Portfolio may contract with a counterparty to pay a stream of cash flows and receive the total return of an index or a security for purposes of attempting to obtain a particular desired return at a lower cost to the Portfolio than if the Portfolio had invested directly in an instrument that yielded that desired return. The Portfolio’s return on a swap will depend on the ability of its counterparty to perform its obligations under the swap. The Adviser will cause the Portfolio to enter into swap agreements only with counterparties that would be eligible for consideration as repurchase agreement counterparties under the Portfolio’s repurchase agreement guidelines.

The Portfolio may enter into interest rate swap transactions with respect to any security they are entitled to hold. Interest rate swaps involve the exchange by the Portfolio with another party of their respective rights to receive interest, e.g., an exchange of floating rate payments for fixed rate payments. The Portfolio expects to enter into these transactions primarily to preserve a return or spread on a particular investment or portion of its portfolio or to protect against any increase in the price of securities it anticipates purchasing at a later date. The Portfolio intends to use these transactions as a hedge and not as a speculative investment. For example, the Portfolio may enter into an interest rate swap in order to protect against declines in the value of fixed income securities held by the Portfolio. In such an instance, the Portfolio may agree with a counterparty to pay a fixed rate (multiplied by a notional amount) and the counterparty to pay a floating rate multiplied by the same notional amount. If interest rates rise, resulting in a diminution in the value of the Portfolio, the Portfolio would receive payments under the swap that would offset, in whole or in part, such diminution in value; if interest rates fall, the Portfolio would likely lose money on the swap transaction.

Treasury Inflation-Protected Securities

The Portfolio may invest in Inflation-Protection Securities (“IPSs”), a type of inflation-indexed Treasury security. IPSs typically provide for semiannual payments of interest and a payment of principal at maturity. In general, each payment will be adjusted to take into account any inflation or deflation that occurs between the issue date of the security and the payment date based on the Consumer Price Index for All Urban Consumers (“CPI-U”).

Each semiannual payment of interest will be determined by multiplying a single fixed rate of interest by the inflation-adjusted principal amount of the security for the date of the interest payment. Thus, although the interest rate will be fixed, the amount of each interest payment will vary with changes in the principal of the security as adjusted for inflation and deflation.

IPSs also provide for an additional payment (a “minimum guarantee payment”) at maturity if the security’s inflation-adjusted principal amount for the maturity date is less than the security’s principal amount at issuance. The amount of the additional payment will equal the excess of the security’s principal amount at issuance over the security’s inflation-adjusted principal amount for the maturity date.

U.S. Government Securities

The Portfolio may purchase U.S. Government securities. The types of U.S. Government obligations in which the Portfolio may at times invest include: (1) U.S. Treasury obligations and (2) obligations issued or guaranteed by U.S. Government agencies and instrumentalities which are supported by any of the following: (a) the full faith and credit of the U.S. Treasury, (b) the right of the issuer to borrow an amount limited to a specific line of credit from the U.S. Treasury, (c) discretionary authority of the U.S. Government agency or instrumentality, or (d) the credit of the instrumentality (examples of agencies and instrumentalities are: Federal Land Banks, Federal Housing Administration, Federal Farm Credit Bank, Farmers Home Administration, Export-Import Bank of the United States, Central Bank for Cooperatives, Federal Intermediate Credit Banks, Federal Home Loan Banks, General Services Administration, Maritime Administration, Tennessee Development Bank, Asian-American Development Bank, International Bank for Reconstruction and Development and Federal National Mortgage Association). No assurance can be given that in the future the U.S. Government will provide financial support to U.S. Government securities it is not obligated to support.

U.S. Registered Securities of Non-U.S. Issuers

The Portfolio may purchase publicly traded common stocks of non-U.S. corporations.

Investing in U.S. registered, dollar-denominated, securities issued by non-U.S. issuers involves some risks and considerations not typically associated with investing in U.S. companies. These include differences in accounting, auditing and financial reporting standards, the possibility of expropriation or confiscatory taxation, adverse changes in investment or exchange control regulations, political instability which could affect U.S. investments in non-U.S. countries, and potential restrictions of the flow of international

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capital. Non-U.S. companies may be subject to less governmental regulation than U.S. issuers. Moreover, individual non-U.S. economies may differ favorably or unfavorably from the U.S. economy in such respects as growth of gross domestic product, rate of inflation, capital reinvestment, resource self-sufficiency and balance of payment positions.

The Portfolio’s investment in common stock of non-U.S. corporations may also be in the form of American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”) and European Depositary Receipts (“EDRs”) (collectively “Depositary Receipts”). Depositary Receipts are receipts, typically issued by a bank or trust company, which evidence ownership of underlying securities issued by a non-U.S. corporation. For ADRs, the depository is typically a U.S. financial institution and the underlying securities are issued by a non-U.S. issuer. For other Depositary Receipts, the depository may be a non-U.S. or a U.S. entity, and the underlying securities may have a non-U.S. or a U.S. issuer. Depositary Receipts will not necessarily be denominated in the same currency as their underlying securities. Generally, ADRs, in registered form, are designed for use in the U.S. securities markets, and EDRs, in bearer form, are designated for use in European securities markets. GDRs are tradable both in the United States and in Europe and are designed for use throughout the world. The Portfolio may invest in unsponsored Depositary Receipts. The issuers of unsponsored Depositary Receipts are not obligated to disclose material information in the United States, and, therefore, there may be less information available regarding such issuers and there may not be a correlation between such information and the market value of the Depositary Receipts.

Variable Amount Master Demand Notes

The Portfolio may invest in variable amount master demand notes which are unsecured obligations that are redeemable upon demand and are typically unrated. These instruments are issued pursuant to written agreements between their issuers and holders. The agreements permit the holders to increase (subject to an agreed maximum) and the holders and issuers to decrease the principal amount of the notes, and specify that the rate of interest payable on the principal fluctuates according to an agreed formula. Generally, changes in interest rates will have a smaller effect on the market value of these securities than on the market value of comparable fixed income obligations. Thus, investing in these securities generally allows less opportunity for capital appreciation and depreciation than investing in comparable fixed income securities. There may be no active secondary market with respect to a particular variable rate instrument.

Variable and Floating Rate Securities

The Portfolio may invest in variable and floating rate securities. Variable rate securities are instruments issued or guaranteed by entities such as (1) U.S. Government, or an agency or instrumentality thereof, (2) corporations, (3) financial institutions, (4) insurance companies or (5) trusts that have a rate of interest subject to adjustment at regular intervals but less frequently than annually. A variable rate security provides for the automatic establishment of a new interest rate on set dates. Interest rates on these securities are ordinarily tied to, and are a percentage of, a widely recognized interest rate, such as the yield on 90-day U.S. Treasury bills or the prime rate of a specified bank. These rates may change as often as twice daily. Generally, changes in interest rates will have a smaller effect on the market value of variable and floating rate securities than on the market value of comparable fixed income obligations. Thus, investing in variable and floating rate securities generally allows less opportunity for capital appreciation and depreciation than investing in comparable fixed income securities. Variable rate obligations will be deemed to have a maturity equal to the period remaining until the next readjustment of the interest rate.

When-Issued Securities and Delayed-Delivery Securities

The Portfolio may purchase securities on a when-issued basis, and may purchase or sell those securities for delayed delivery. Delivery of and payment for these securities may take place as long as a month or more after the date of the purchase commitment. The value of these securities is subject to market fluctuation during this period, and no income accrues to the Portfolio until settlement takes place. When entering into a when-issued or delayed-delivery transaction, the Portfolio will rely on the other party to consummate the transaction; if the other party fails to do so, the Portfolio may be disadvantaged. The Portfolio will not accrue income with respect to a when-issued or delayed delivery security prior to its stated delivery date.

Securities purchased on a when-issued or delayed-delivery basis and held by the Portfolio are subject to changes in market value based upon actual or perceived changes in the level of interest rates. Generally, the value of such securities will fluctuate inversely to changes in interest rates — i.e., they will appreciate in value when interest rates decline and decrease in value when interest rates rise. Therefore, if in order to achieve higher interest income the Portfolio remains substantially fully invested at the same time that it has purchased securities on a “when-issued” or delayed-delivery basis, there will be a greater possibility of fluctuation in the Portfolio’s net asset value (“NAV”).

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Zero Coupon Securities

The Portfolio may invest in zero coupon securities. Zero coupon securities are notes, bonds and debentures that: (1) do not pay current interest and are issued at a substantial discount from par value; (2) have been stripped of their unmatured interest coupons and receipts; or (3) pay no interest until a stated date one or more years into the future. These securities also include certificates representing interests in such stripped coupons and receipts.

Generally, changes in interest rates will have a greater impact on the market value of a zero coupon security than on the market value of the comparable securities that pay interest periodically during the life of the instrument. The Portfolio will not receive cash payments on a current basis from the issuer in respect of accrued original issue discount (“OID”), but investors will be required to accrue OID for U.S. federal income tax purposes. To generate sufficient cash for the Portfolio to make the requisite distributions to maintain its qualification for treatment as a RIC, the Portfolio may be required redeem a portion of its interest in the Portfolio in order to obtain sufficient cash to satisfy the 90% distribution requirement with respect to the OID accrued on zero coupon bonds. The Portfolio in turn may sell investments in order to meet such redemption requests including at a time when it may not be advantageous to do so.

A number of securities firms and banks have stripped the interest coupons and resold them in custodian receipt programs with different names such as Treasury Income Growth Receipts (“TIGRS”) and Certificates of Accrual on Treasuries (“CATS”). Privately-issued stripped securities such as TIGRS and CATS are not themselves guaranteed by the U.S. Government, but the future payment of principal or interest on U.S. Treasury obligations which they represent is so guaranteed.

Asset Segregation and Coverage

The Portfolio may be required to earmark or otherwise segregate liquid assets in respect of its obligations under derivatives transactions that involve contractual obligations to pay in the future, or the Portfolio may engage in other measures to “cover” its obligations with respect to such transactions. The amounts that are earmarked or otherwise segregated may be based on the notional value of the derivative or on the daily mark-to-market obligation under the derivatives contract and may be reduced by amounts on deposit with the applicable broker or counterparty to the derivatives transaction. In certain circumstances, the Portfolio may enter into an offsetting position rather than earmarking or segregating liquid assets. The Portfolio may modify its asset segregation and coverage policies from time to time. Although earmarking or segregating may in certain cases have the effect of limiting the Portfolio’s ability to engage in derivatives transactions, the extent of any such limitation will depend on a variety of factors, including the method by which the Portfolio determines the nature and amount of assets to be earmarked or segregated.

SPECIAL CONSIDERATIONS AND RISKS

A discussion of the risks associated with an investment in the Portfolio is contained in the Prospectus. The discussion below supplements, and should be read in conjunction with, the Prospectus.

GENERAL

Investment in the Portfolio should be made with an understanding that the value of the Portfolio’s portfolio securities may fluctuate in accordance with changes in the financial condition of the issuers of the portfolio securities, the value of securities generally and other factors.

An investment in the Portfolio should also be made with an understanding of the risks inherent in an investment in securities, including the risk that the financial condition of issuers may become impaired or that the general condition of the securities markets may deteriorate (either of which may cause a decrease in the value of the portfolio securities and thus in the value of Shares). Securities are susceptible to general market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change. These investor perceptions are based on various and unpredictable factors including expectations regarding government, economic, monetary and fiscal policies, inflation and interest rates, economic expansion or contraction, and global or regional political, economic and banking crises. Securities of issuers traded on exchanges may be suspended, either by the issuers themselves, by an exchange or by government authorities. The likelihood of such suspensions may be higher for securities of issuers in emerging or less-developed market countries than in countries with more developed markets. Trading suspensions may be applied from time to time to the securities of individual issuers for reasons specific to that issuer, or may be applied broadly by exchanges or governmental authorities in response to market events. Suspensions may last for significant periods of time, during which trading in the securities and instruments that reference the securities, such as participatory notes (or “P-notes”) or other derivative instruments, may be halted.

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Holders of common stocks incur more risk than holders of preferred stocks and debt obligations because common stockholders, as owners of the issuer, have generally inferior rights to receive payments from the issuer in comparison with the rights of creditors of, or holders of debt obligations or preferred stocks issued by, the issuer. Further, unlike debt securities which typically have a stated principal amount payable at maturity (whose value, however, will be subject to market fluctuations prior thereto), or preferred stocks which typically have a liquidation preference and which may have stated optional or mandatory redemption provisions, common stocks have neither a fixed principal amount nor a maturity. Common stock values are subject to market fluctuations as long as the common stock remains outstanding.

The principal trading market for some securities may be in the over-the-counter market. The existence of a liquid trading market for certain securities may depend on whether dealers will make a market in such securities. There can be no assurance that a market will be made or maintained or that any such market will be or remain liquid. The price at which securities may be sold and the value of the Portfolio’s Shares will be adversely affected if trading markets for the Portfolio’s portfolio securities are limited or absent or if bid/ask spreads are wide.

MARKET DISTRIBUTION AND GEOPOLITICAL RISK

The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. War, terrorism, and related geopolitical events have led, and in the future may lead, to increased short-term market volatility and may have adverse long-term effects on U.S. and world economies and markets generally. Likewise, natural and environmental disasters and systemic market dislocations may be highly disruptive to economies and markets. Those events as well as other changes in non-U.S. and domestic economic and political conditions also could adversely affect individual issuers or related groups of issuers, securities markets, interest rates, credit ratings, inflation, investor sentiment, and other factors affecting the value of the Portfolio’s investments. Given the increasing interdependence between global economies and markets, conditions in one country, market, or region might adversely impact markets, issuers and/or foreign exchange rates in other countries, including the U.S. Continuing uncertainty as to the status of the Euro and the EMU has created significant volatility in currency and financial markets generally. Any partial or complete dissolution of the EMU, or any continued uncertainty as to its status, could have significant adverse effects on currency and financial markets, and on the values of the Portfolio’s investments.

Securities markets may be susceptible to market manipulation (e.g., the potential manipulation of the London Interbank Offered Rate (LIBOR)) or other fraudulent trade practices, which could disrupt the orderly functioning of these markets or adversely affect the value of investments traded in these markets, including investments of the Portfolio.

Recent political activity in the U.S. has increased the risk that the U.S. could default on some or any of its obligations. While it is impossible to predict the consequences of such an unprecedented event, it is likely that a default by the U.S. would be highly disruptive to the U.S. and global securities markets and could significantly impair the value of the Portfolio’s investments. Similarly, political events within the U.S. at times have resulted, and may in the future result, in a shutdown of government services, which could negatively affect the U.S. economy, decrease the value of many Portfolio investments, and increase uncertainty in or impair the operation of the U.S. or other securities markets.

To the extent the Portfolio has focused its investments in the stock market index of a particular region, adverse geopolitical and other events could have a disproportionate impact on the Portfolio.

TAX RISKS

As with any investment, you should consider how your investment in Shares will be taxed. The tax information in the Prospectus and this SAI is provided as general information. You should consult your own tax professional about the tax consequences of an investment in Shares.

Unless your investment in Shares is made through a tax-exempt entity or tax-advantaged retirement account, such as an individual retirement account, you need to be aware of the possible tax consequences when the Portfolio makes distributions or you sell Shares.

INTEREST RATE ENVIRONMENT RISK

In the wake of the financial crisis that began in 2007, the Federal Reserve System attempted to stabilize the U.S. economy and support the U.S. economic recovery by keeping the federal funds rate at or near zero percent. In addition, the Federal Reserve has purchased large quantities of securities issued or guaranteed by the U.S. government, its agencies or instrumentalities on the open market (the “quantitative easing program”). As a result, the United States is experiencing historically low interest rate levels. A low interest rate environment may have an adverse impact on the Portfolio’s ability to provide a positive yield to its shareholders and pay expenses out of the Portfolio’s assets because of the low yields from the Portfolio’s portfolio investments.

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However, continued economic recovery and the cessation of the quantitative easing program increase the risk that interest rates will rise in the near future and that the Portfolio will face a heightened level of interest rate risk. Federal Reserve policy changes may expose fixed-income and related markets to heightened volatility and may reduce liquidity for certain Fund investments, which could cause the value of the Fund’s investments and the Fund’s share price to decline or create difficulties for the Fund in disposing of investments. If the Fund invests in derivatives tied to fixed-income markets, it may be more substantially exposed to these risks than if the Fund does not invest in derivatives. The Fund could also be forced to liquidate its investments at disadvantageous times or prices, thereby adversely affecting the Fund. To the extent the Fund experiences high redemptions because of these policy changes, the Fund may experience increased portfolio turnover, which will increase the costs that the Fund incurs and lower the Fund’s performance.

FUTURES AND OPTIONS TRANSACTIONS

Positions in futures contracts and options may be closed out only on an exchange which provides a secondary market for such financial instruments. However, there can be no assurance that a liquid secondary market will exist for any particular futures contract or option at any specific time. Thus, it may not be possible to close a futures or options position. In the event of adverse price movements, the Portfolio would continue to be required to make daily cash payments to maintain its required margin. In such situations, if the Portfolio has insufficient cash, it may have to sell portfolio securities to meet daily margin requirements at a time when it may be disadvantageous to do so. In addition, the Portfolio may be required to make delivery of the instruments underlying futures contracts it has sold.

The Portfolio will minimize the risk that it will be unable to close out a futures or options contract by only entering into futures and options for which there appears to be a liquid secondary market.

The risk of loss in trading futures contracts or uncovered call options in some strategies ( e.g. , selling uncovered index futures contracts) is potentially unlimited. The risk of a futures position may still be large as traditionally measured due to the low margin deposits required. In many cases, a relatively small price movement in a futures contract may result in immediate and substantial loss or gain to the investor relative to the size of a required margin deposit. The Portfolio, however, may utilize futures and options contracts in a manner designed to limit its risk exposure to that which is comparable to what it would have incurred through direct investment in securities.

Utilization of futures transactions by the Portfolio involves the risk of loss by the Portfolio of margin deposits in the event of bankruptcy of a broker with whom the Portfolio has an open position in the futures contract or option.

Certain financial futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day’s settlement price at the end of a trading session. Once the daily limit has been reached in a particular type of contract, no trades may be made on that day at a price beyond that limit. The daily limit governs only price movement during a particular trading day and therefore does not limit potential losses, because the limit may prevent the liquidation of unfavorable positions. Futures contract prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of futures positions and subjecting some futures traders to substantial losses.

RISKS OF SWAP AGREEMENTS

Swap agreements are subject to the risk that the swap counterparty will default on its obligations. If such a default occurs, the Portfolio will have contractual remedies pursuant to the agreements related to the transaction, but such remedies may be subject to bankruptcy and insolvency laws which could affect the Portfolio’s rights as a creditor.

The use of interest-rate and index swaps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. The use of a swap requires an understanding not only of the referenced asset, reference rate or index but also of the swap itself, without the benefit of observing the performance of the swap under all possible market conditions. These transactions generally do not involve the delivery of securities or other underlying assets or principal.

The absence of a regulated execution facility or contract market and lack of liquidity for swap transactions has led, in some instances, to difficulties in trading and valuation, especially in the event of market disruptions. Financial reform legislation requires many major categories of swaps to be executed on a regulated exchange or contract market and to be cleared through a regulated clearinghouse. Once implemented, new regulations, including margin, clearing and trade execution requirements, may make derivatives such as swaps more costly, may limit their availability, or may otherwise adversely affect the value or performance of these instruments.

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Certain swaps, such as interest rate swaps and credit default swaps that are based on an index, are required under applicable law to be cleared by a regulated clearinghouse. Swaps subject to this requirement are typically submitted for clearing through brokerage firms that are members of the clearinghouse. The Portfolio would establish an account with a brokerage firm to facilitate clearing such a swap, and the clearinghouse would become the Portfolio’s counterparty. A brokerage firm would guarantee the Portfolio’s performance on the swap to the clearinghouse. The Portfolio would be exposed to the credit risk of the clearinghouse and the brokerage firm that holds the cleared swap. The brokerage firm also would impose margin requirements with respect to open cleared swap positions held by the Portfolio, and the brokerage firm would be able to require termination of those positions in certain circumstances. These margin requirements and termination provisions may adversely affect the Portfolio’s ability to trade cleared swaps. In addition, the Portfolio may not be able to recover the full amount of its margin from a brokerage firm if the firm were to go into bankruptcy. It is also possible that the Portfolio would not be able to enter into a swap transaction that is required to be cleared if no clearinghouse will accept the swap for clearing.

Swaps that are required to be cleared must be traded on a regulated execution facility or contract market that makes them available for trading. The transition from trading swaps bilaterally to trading them on such a facility or market may not result in swaps being easier to trade or value and may present certain execution risks if these facilities and markets do not operate properly. On-facility trading of swaps is also expected to lead to greater standardization of their terms. It is possible that the Portfolio may not be able to enter into swaps that fully meet its investment needs, or that the costs of entering into customized swaps, including any applicable margin requirements, will be significant.

Because they are two party contracts that may be subject to contractual restrictions on transferability and termination and because they may have terms of greater than seven days, swap agreements may be considered to be illiquid and subject to the Portfolio’s limitation on investments in illiquid securities. To the extent that a swap is not liquid, 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. Like most other investments, swap agreements are subject to the risk that the market value of the instrument will change in a way detrimental to the Portfolio’s interest.

If the Portfolio uses a swap as a hedge against, or as a substitute for, a portfolio investment, the Portfolio will be exposed to the risk that the swap will have or will develop imperfect or no correlation with the portfolio investment. This could cause substantial losses for the Portfolio. While hedging strategies involving swap instruments can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Portfolio investments. Many swaps are complex and often valued subjectively.

CUSTODIAL RISK

There are risks involved in dealing with the custodians or brokers who hold the Portfolio’s investments or settle the Portfolio’s trades. It is possible that, in the event of the insolvency or bankruptcy of a custodian or broker, the Portfolio would be delayed or prevented from recovering its assets from the custodian or broker, or its estate, and may have only a general unsecured claim against the custodian or broker for those assets. In recent insolvencies of brokers or other financial institutions, the ability of certain customers to recover their assets from the insolvent’s estate has been delayed, limited, or prevented, often unpredictably, and there is no assurance that any assets held by the Portfolio with a custodian or broker will be readily recoverable by the Portfolio. In addition, there may be limited recourse against non-U.S. sub-custodians in those situations in which the Portfolio invests in markets where custodial and/or settlement systems and regulations are not fully developed, including emerging markets, and the assets of the Portfolio have been entrusted to such sub-custodians. SSGA FM or an affiliate may serve as the custodian of the Portfolio.

INVESTMENT RESTRICTIONS

The Trust has adopted the following investment restrictions as fundamental policies with respect to the Portfolio. These restrictions cannot be changed with respect to the Portfolio without the approval of the holders of a majority of the Portfolio’s outstanding voting securities. For purposes of the 1940 Act, a majority of the outstanding voting securities of the Portfolio means the vote, at an annual or a special meeting of the security holders of the Trust, of the lesser of (1) 67% or more of the voting securities of the Portfolio present at such meeting, if the holders of more than 50% of the outstanding voting securities of the Portfolio are present or represented by proxy, or (2) more than 50% of the outstanding voting securities of the Portfolio. Except with the approval of a majority of the outstanding voting securities, the Portfolio may not:

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In addition to the investment restrictions adopted as fundamental policies as set forth above, the Portfolio observes the following restrictions, which may be changed by the Board without a shareholder vote. The Portfolio will not:

If a percentage limitation is adhered to at the time of investment or contract, a later increase or decrease in percentage resulting from any change in value or total or net assets will not result in a violation of such restriction, except that the percentage limitations with respect to the borrowing of money and illiquid securities will be observed continuously. With respect to the limitation on borrowing, in the event that a subsequent change in net assets or other circumstances cause the Portfolio to exceed its limitation, the Portfolio will take steps to bring the aggregate amount of borrowing back within the limitations within three days thereafter (not including Sundays and holidays). With respect to the limitation on illiquid securities, in the event that a subsequent change in net assets or other circumstances cause the Portfolio to exceed its limitation, the Portfolio will take steps to bring the aggregate amount of illiquid instruments back within the limitations as soon as reasonably practicable.

The 1940 Act currently permits the Portfolio to loan up to 33 ¹ / ₃ % of its total assets. With respect to borrowing, the 1940 Act presently allows the Portfolio to: (1) borrow from any bank (including pledging, mortgaging or hypothecating assets) in an amount up to 33   ¹ / ₃ % of its total assets, (2) borrow money for temporary purposes in an amount not exceeding 5% of the value of the Portfolio’s total assets at the time of the loan, and (3) enter into reverse repurchase agreements. The 1940 Act generally prohibits funds from issuing senior securities, although it does not treat certain transactions as senior securities, such as certain borrowings, short sales, reverse repurchase agreements, firm commitment agreements and standby commitments, with appropriate earmarking or segregation of assets to cover such obligation. With respect to investments in commodities, the 1940 Act presently permits the Portfolio to invest in commodities in accordance with investment policies contained in its prospectus and SAI. Any such investment shall also comply with the Commodity Exchange Act and the rules and regulations thereunder. The 1940 Act does not directly restrict an investment company’s ability to invest in real estate, but does require that every investment company have the fundamental investment policy governing such investments. The Portfolio will not purchase or sell real estate, except that the Portfolio may purchase marketable securities issued by companies which own or invest in real estate (including REITs) and in instruments that are backed or secured by real estate.

DISCLOSURE OF PORTFOLIO HOLDINGS

The Trust has adopted a policy regarding the disclosure of information about the Trust’s portfolio holdings. The Board must approve all material amendments to this policy. The Portfolio’s portfolio holdings are publicly disseminated each day the Portfolio is open for business through financial reporting and news services including publicly accessible Internet web sites. The Trust, the Adviser or State Street will not disseminate non-public information concerning the Trust, except: (i) to a party for a legitimate business purpose related to the day-to-day operations of the Portfolios, or (ii) to any other party for a legitimate business or regulatory purpose, upon waiver or exception.

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