MERGER ETF

ProShares Merger ETF (the “Fund”) seeks investment results that, before fees and expenses, track the performance of the S&P Merger Arbitrage Index (the “Index”).

The table below describes the fees and expenses that you may pay if you buy or hold shares of the Fund.

Annual Fund Operating Expenses		ProShares Merger ETF
Investment Advisory Fees		0.75%
Other Expenses	^[1]	3.51%
Total Annual Fund Operating Expenses Before Fee Waivers and Expense Reimbursements		4.26%
Fee Waiver/Reimbursement	^[2]	(3.51%)
Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements		0.75%

[1]

"Other Expenses" are based on estimated amounts for the current fiscal year.

[2]

ProShare Advisors LLC ("ProShare Advisors") has contractually agreed to waive Investment Advisory and Management Services Fees and to reimburse Other Expenses to the extent Total Annual Fund Operating Expenses Before Fee Waivers and Expense Reimbursements, as a percentage of average daily net assets, exceed 0.75% through September 30, 2014. After that date, the expense limitation may be terminated or revised. Amounts waived or reimbursed in a particular contractual period may be recouped by ProShare Advisors within five years of the end of that contractual period to the extent that recoupment will not cause the Fund's expenses to exceed any expense limitation in place at that time.

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of each period. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the fee waiver/expense reimbursement is assumed only to pertain to the first year. Although your actual cost may be higher or lower, based on these assumptions your approximate costs would be:

The Fund pays transaction and financing costs associated with the purchase and sale of securities and derivatives. In addition, investors may pay brokerage commissions on their purchases and sales of the Fund’s shares. These costs are not reflected in the table or the example above.

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the example above, affect the Fund’s performance. During the period from December 11, 2012 (the Fund’s inception date) to May 31, 2013, the Fund’s portfolio turnover rate was 274% of the average value of its entire portfolio. The Fund’s portfolio turnover rate is calculated without regard to cash instrument or derivatives transactions. If such transactions were included, the Fund’s portfolio turnover rate would be significantly higher.

The Fund is designed to track the performance of the Index and provide exposure to a global merger arbitrage strategy. The Index, and by extension the Fund, seeks to produce consistent, positive returns in virtually all market environments, although there are no assurances it will achieve this result. A global merger arbitrage strategy seeks to capture the spread between the price at which the stock of a company (each such company, a “Target”) trades after a proposed acquisition of such Target is announced and the value (cash plus stock) that the acquiring company (the “Acquirer”) has proposed to pay for the stock of the Target (a “Spread”). Such a Spread typically exists due to the uncertainty that the announced merger, acquisition or other corporate reorganization (each, a “Deal”) will close, and if it closes, that such Deal will be at the initially proposed economic terms. For Deals that close, the price of the Target after the Deal is announced is expected to approach the proposed acquisition price by the closing date of the Deal, resulting in a gain to strategies such as the Index’s, which attempt to capture this Spread. The size of the Spread will depend on several factors, including the perceived risk of the Deal closing and the length of time expected until the Deal is completed. For Deals that are not consummated, the price of the Target commonly falls back to pre-announcement levels, typically resulting in significant losses well in excess of the post-announcement Spread the strategy attempts to capture.

To obtain exposure to the Index, the Fund takes long positions in shares of the Target. The Fund also takes short positions in shares of the Acquirer when the Deal involves an exchange of the Acquirer’s stock. The short positions are intended to reduce the effect that declines in the value of the Acquirer’s stock could have on the Spread.

The Index, created by Standard & Poor’s^®, provides exposure to up to 40 publicly announced Deals within developed market countries through a combination of long and, in certain cases, short security positions. When Deals enter the Index, the weight in long positions of Targets is initiated at three percent (3%) and the initial weight in short positions of Acquirers ranges between zero and three percent (0% and 3%), depending on the terms of the Deal. The sum of initial net exposure for the Fund (i.e., the difference between: (a) the Fund’s total long exposure; and (b) the Fund’s total short exposure) is limited to between zero and one hundred percent (0% and 100%), with both the long and short positions having a maximum initial exposure each of 120%. The Index also includes a Treasury bill component which constitutes the remainder of the Index when net exposure from included Deals is less than 100%. Certain Deals are screened out based on liquidity, size, and Spread between the Deal price and the Target’s stock price. Additions and deletions occur on a rolling basis. Returns are expected to be uncorrelated to equity markets over time.

The Index is denominated in local currencies, and the Fund will generally seek to hedge against the impact of currency movements. The Index is published under the Bloomberg ticker symbol “SPLSALT”.

For a further description of the Index, please see “Additional Information on Certain Underlying Indexes” in the back of the Fund’s Full Prospectus.

The Fund invests in securities and derivatives that ProShare Advisors believes, in combination, should track the performance of the Index. Under normal circumstances, the Fund will invest at least 80% of its total assets in component securities (i.e., securities of the Index). The Fund will generally not short any stocks directly but will generally obtain short exposure through derivatives. The securities and derivatives that the Fund will principally invest in are set forth below. Cash balances arising from the use of derivatives will typically be held in money market instruments.

Equity Securities — The Fund invests in common stock issued by U.S. and foreign public companies.

Derivatives — The Fund invests in derivatives, which are financial instruments whose value is derived from the value of an underlying asset or assets, such as stocks, bonds or funds (including exchange-traded funds (“ETFs”)), exchange rate, interest rates or indexes. The Fund invests in derivatives as a substitute for investing directly in or making short sales of the securities of the Index, as well as for effecting currency hedging transactions. These derivatives principally include:

Swap Agreements — Contracts entered into primarily with major global financial institutions for a specified period ranging from a day to more than one year. In a standard “swap” transaction, two parties agree to exchange the return (or differentials in rates of return) earned or realized on particular predetermined investments or instruments. The gross return to be exchanged or “swapped” between the parties is calculated with respect to a “notional amount,” e.g., the return on or change in value of a particular dollar amount invested in a “basket” of securities representing a particular index.

Forward Contracts — Two-party contracts where a purchase or sale of a specific quantity of a commodity, security, foreign currency or other financial instrument is entered into with dealers or financial institutions at a set price, with delivery and settlement at a specified future date. Forward contracts may also be structured for cash settlement, rather than physical delivery.

Money Market Instruments — The Fund invests in short-term cash instruments that have a remaining maturity of 397 days or less and exhibit high quality credit profiles, including:

U.S. Treasury Bills — U.S. government securities that have initial maturities of one year or less, and are supported by the full faith and credit of the United States.

Repurchase Agreements — Contracts in which a seller of securities, usually U.S. government securities or other money market instruments, agrees to buy them back at a specified time and price. Repurchase agreements are primarily used by the Fund as a short-term investment vehicle for cash positions.

ProShare Advisors follows a passive approach to investing that is designed to track the performance of the Index. The Fund attempts to track the performance of the Index by investing all, or substantially all, of its assets in investments that make up the Index or in financial instruments that provide similar exposure, holding or exposed to each investment in approximately the same proportion as its weighting in the Index. At times, the Fund may invest in or gain exposure to only a representative sample of the securities in the Index or to securities not contained in the Index or in financial instruments, with the intent of obtaining exposure with aggregate characteristics similar to those of the Index. ProShare Advisors does not invest the assets of the Fund in securities or financial instruments based on ProShare Advisors’ view of the investment merit of a particular security, instrument, or company, nor does it conduct conventional investment research or analysis or forecast market movement or trends, in managing the assets of the Fund. The Fund seeks to remain fully invested at all times in securities and/or financial instruments that, in combination, provide exposure to the Index without regard to market conditions, trends or direction.

The Fund will concentrate its investments in a particular industry or group of industries to approximately the same extent as the Index is so concentrated.

Please see “Investment Objectives, Principal Investment Strategies and Related Risks” in the back of the Fund’s Full Prospectus for additional details.

You could lose money by investing in the Fund.

Risks Associated with the Use of Derivatives — The Fund obtains investment exposure through derivatives, which may be considered aggressive. Investing in derivatives may expose the Fund to greater risks than investing directly in the reference asset(s) underlying those derivatives, such as counterparty risk, liquidity risk and increased correlation risk (each as discussed below). When the Fund uses derivatives, there may be imperfect correlation between the value of the reference asset(s) and the derivative, which may prevent the Fund from achieving its investment objective. Moreover, with respect to the use of swap agreements, if the Index has a dramatic intraday move that causes a material decline in the Fund’s net assets, the terms of a swap agreement between the Fund and its counterparty may permit the counterparty to immediately close out the transaction with the Fund. In that event, the Fund may be unable to enter into another swap agreement or invest in other derivatives to achieve the desired exposure consistent with the Fund’s investment objective. This, in turn, may prevent the Fund from achieving its investment objective, even if the Index reverses all or a portion of its intraday move by the end of the day. Any costs associated with using derivatives may also have the effect of lowering the Fund’s return.

Correlation Risk — A number of factors may affect the Fund’s ability to achieve a high degree of correlation with the Index, and there is no guarantee that the Fund will achieve a high degree of correlation. Failure to achieve a high degree of correlation may prevent the Fund from achieving its investment objective. The factors that may adversely affect the Fund’s correlation with the Index include fees, expenses, transaction costs, financing costs associated with the use of derivatives, income items, valuation methodology, accounting standards and disruptions or illiquidity in the markets for the securities or financial instruments in which the Fund invests. While the Fund attempts to track the performance of the Index by investing all, or substantially all, of its assets in the types of securities or gaining exposure to the securities that make up the Index in approximately the same proportion as their weighting in the Index, at times, the Fund may not have investment exposure to all securities in the Index, or its weighting of investment exposure to securities may be different from that of the Index. In addition, the Fund may invest in securities not included in the Index or in financial instruments. The Fund may also be subject to large movements of assets into and out of the Fund, potentially resulting in the Fund being over- or underexposed to the Index and may be impacted by Index reconstitutions and Index rebalancing events. Any of these factors could decrease correlation between the performance of the Fund and the Index and may hinder the Fund’s ability to meet its investment objective. The Fund’s foreign currency hedging strategy may also be unable to perfectly match the Index and will introduce additional costs, both sources of additional correlation risk.

Risks Related to Foreign Currencies and the Fund’s Currency Hedging Strategy — The Index is denominated in local currencies and does not reflect the impact of currency movements that can affect U.S. investors (such as the Fund) in such securities. The Fund will generally attempt to match the Index by hedging against exposure to foreign currencies. These hedges will in many cases not fully eliminate the exposure to a particular currency. In addition, interest rate differentials and additional transaction costs can diminish the effectiveness of a particular hedging position. All of these factors may cause additional correlation risk.

Exposure to Foreign Investments Risk — Exposure to securities of foreign issuers may provide the Fund with increased risk. Various factors related to foreign investments may negatively impact the Index’s performance, such as: i) fluctuations in the value of the local currency versus the U.S. dollar and the uncertainty associated with the cost of converting between various currencies even if the Fund attempts to hedge against its currency exposure; ii) differences in securities settlement practices; iii) uncertainty associated with evidence of ownership of investments in countries that lack centralized custodial services; iv) possible regulation of, or other limitations on, investments by U.S. investors in foreign investments; v) potentially higher brokerage commissions; vi) the possibility that a foreign government may withhold portions of interest and dividends at the source; vii) taxation of income earned in foreign countries or other foreign taxes imposed; viii) foreign exchange controls, which may include suspension of the ability to transfer currency from a foreign country; ix) less publicly available information about foreign issuers; x) changes in the denomination currency of a foreign investment; and xi) less certain legal systems in which the Fund might encounter difficulties or be unable to pursue legal remedies. Foreign investments also may be more susceptible to political, social, economic and regional factors than might be the case with U.S. securities. In addition, markets for foreign investments are usually less liquid, more volatile and significantly smaller than markets for U.S. securities, which may affect, among other things, the Fund’s ability to purchase or sell foreign investments at appropriate times.

Because of differences in settlement times and/or foreign market holidays, transactions in a foreign market may take place one or more days after the necessary exposure to these investments is determined. Until the transactions are effected, the Fund is exposed to increased foreign currency risk and market risk and, ultimately, increased correlation risk.

Because the Fund’s foreign investments will be in developing or “emerging market” countries, all the aforementioned factors are heightened and foreign investments risk is higher.

Risks Related to the Merger Arbitrage Strategy — There is no assurance that any of the Deals reflected in the Index will be successfully completed. In particular, in certain market conditions, it is possible that most or all of the Deals could fail. If any Deal reflected in the Index is not consummated, the Spread between the price offered for the Target and the price at which the shares of the Target trade is expected to widen. In such cases the price of the Target commonly falls back to pre-Deal announcement levels, typically resulting in significant losses well in excess of the post-announcement Spread the strategy attempts to capture. This could adversely affect the performance of the Index and the performance of the Fund. Deals may be terminated, renegotiated, or subject to a longer time frame than initially contemplated due to business, regulatory, or other concerns. Any of these events may negatively impact the performance of the Fund. The Index may also delete transactions under certain circumstances, thus precluding any potential future gains. Also, foreign companies involved in pending mergers or acquisitions may present risks distinct from comparable transactions completed solely within the U.S.

Long/Short Risk — The Fund seeks long exposure to certain securities and short exposure to certain other securities. There is no guarantee that the returns on the Fund’s long or short positions will produce high, or even positive, returns and the Fund could lose money if either or both the Fund’s long and short positions produce negative returns.

Short Sale Exposure Risk — The Fund may seek inverse or “short” exposure through financial instruments such as swap agreements, which may cause the Fund to be exposed to certain risks associated with selling securities short. These risks include, under certain market conditions, the cost of shorting securities, which is not reflected in the Index, an increase in the volatility and decrease in the liquidity of securities underlying the short position, which may lower the Fund’s return, result in a loss, have the effect of limiting the Fund’s ability to obtain inverse exposure through financial instruments such as swap agreements, or require the Fund to seek inverse exposure through alternative investment strategies that may be less desirable or may be more costly to implement. To the extent that, at any particular point in time, the securities underlying the short position may be thinly traded or have a limited market, including due to regulatory action, the Fund may be unable to meet its investment objective due to a lack of available securities or counterparties. During such periods, the Fund’s ability to issue additional Creation Units may be adversely affected. Obtaining inverse exposure through these instruments may be considered an aggressive investment technique. The Fund may not have exposure to all short components of the Index or may have short exposure to securities not included in the Index.

Counterparty Risk — The Fund will be subject to credit risk (i.e., the risk that a counterparty is unwilling or unable to make timely payments to meet its contractual obligations) with respect to the amount it expects to receive from counterparties to financial instruments or repurchase agreements entered into by the Fund. If a counterparty becomes bankrupt or fails to perform its obligations, the value of an investment in the Fund may decline.

Early Close/Late Close/Trading Halt Risk — An exchange or market may close early, close late or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

Equity and Market Risk — The equity markets are volatile, and the value of securities, swaps and other instruments correlated with the equity markets may fluctuate dramatically from day-to-day. Equity markets are subject to corporate, political, regulatory, market and economic developments, as well as developments that impact specific economic sectors, industries or segments of the market. Further, stocks in the Index may underperform other equity investments. Volatility in the markets and/or market developments may cause the value of an investment in the Fund to decrease.

Index Performance Risk — There is no guarantee or assurance that the methodology used to create the Index will result in the Fund achieving high, or even positive, returns. The Index may underperform more traditional indices. In turn, the Fund could lose value while other indices or measures of market performance increase in value.

Liquidity Risk — In certain circumstances, such as the disruption of the orderly markets for the securities or financial instruments in which the Fund invests, the Fund might not be able to acquire or dispose of certain holdings quickly or at prices that represent true market value in the judgment of ProShare Advisors. Markets for the securities or financial instruments in which the Fund invests may be disrupted by a number of events, including but not limited to economic crises, natural disasters, new legislation, or regulatory changes inside or outside of the U.S. For example, regulation limiting the ability of certain financial institutions to invest in certain securities would likely reduce the liquidity of those securities. These situations may prevent the Fund from limiting losses, realizing gains or achieving a high correlation with the Index.

Market Price Variance Risk — Fund shares are listed for trading on the BATS Exchange and can be bought and sold in the secondary market at market prices. The market prices of shares will fluctuate in response to changes in the value of the Fund’s holdings and supply and demand for shares. ProShare Advisors cannot predict whether shares will trade above, below or at a price equal to the value of the Fund’s holdings. Given the fact that shares can be created and redeemed in Creation Units, as defined below, ProShare Advisors believes that large discounts or premiums to the value of the Fund’s holdings should not be sustained. The Fund’s investment results are measured based upon the daily net asset value (“NAV”) of the Fund. Investors purchasing and selling shares in the secondary market may not experience investment results consistent with those experienced by investors creating and redeeming shares directly with the Fund.

Non-Diversification Risk — The Fund is classified as “non-diversified” under the Investment Company Act of 1940, and has the ability to invest a relatively high percentage of its investments in the securities of a small number of issuers susceptible to a single economic, political or regulatory event. This may increase the Fund’s volatility and cause performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance. This risk may be particularly acute if the Index is comprised of a small number of securities.

Portfolio Turnover Risk — Active market trading of the Fund’s shares may cause more frequent creation or redemption activities that could, in certain circumstances, increase the number of portfolio transactions. High levels of transactions increase brokerage and other transaction costs and may result in increased taxable capital gains.

Valuation Risk — In certain circumstances, portfolio securities may be valued using techniques other than market quotations. The value established for a portfolio security may be different from what would be produced through the use of another methodology or if it had been priced using market quotations. Portfolio securities that are valued using techniques other than market quotations, including “fair valued” securities, may be subject to greater fluctuation in their value from one day to the next than if market quotations were used. In addition, there is no assurance that the Fund could sell a portfolio security for the value established for it at any time, and it is possible that the Fund would incur a loss because a portfolio security is sold at a discount to its established value.

Valuation Time Risk — The Fund typically values its portfolio at 4:00 p.m. (Eastern Time). In certain cases, foreign securities markets close before such time or may not be open for business on the same calendar days as the Fund. Moreover, the Fund’s shares trade on the BATS Exchange from 9:30 a.m. to 4:00 p.m. (Eastern Time). The securities or derivatives (and/or reference assets on which the derivatives are based) held by the Fund, however, may be traded in markets that close at a different time than the BATS Exchange. Consequently, liquidity in the securities or derivatives (and/or their reference assets) may be reduced after the applicable closing times. Accordingly, during the time when the BATS Exchange is open but after the applicable closing times, trading spreads and the resulting premium or discount on the Fund’s shares may widen. As a result, the performance of the market price of the Fund may vary, perhaps significantly, from the performance of the Index.

Please see “Investment Objectives, Principal Investment Strategies and Related Risks” in the back of the Fund’s Full Prospectus for additional details.

Performance history will be available for the Fund after it has been in operation for a full calendar year. After the Fund has a full calendar year of performance information, performance information will be shown on an annual basis.