Form S-1

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting company)

Smaller reporting company

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Approximate date of commencement of proposed sale to the public: As promptly as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. x

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this form is a post–effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this form is a post–effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one.)

The registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

This Registration Statement on Form S-1 (this “Registration Statement”) of ProShares Trust II (the “Registrant”) is being filed by the Registrant by agreement with the Commission to move the registration of some series of the Registrant from its Registration Statement on Form S-3 (file no. 333-163511) Post-Effective Amendment No. 4 of which was filed by the registrant on April 13, 2011 (the “Effective S-3”). This Registration Statement contains two prospectuses: (i) a preliminary prospectus that includes commodity and currency series of the Registrant and (ii) a preliminary prospectus that includes VIX Futures series of the Registrant.

The information in this Prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This Prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

ProShares Trust II (the “Trust”) is a Delaware statutory trust organized into separate series. The Trust may from time to time offer to sell common units of beneficial interest (“Shares”) of any or all of the seven series of the Trust (each, a “Fund” and collectively, the “Funds”) listed above or other series of the Trust identified in the future by supplement, which represent units of fractional undivided beneficial interest in and ownership of a series of the Trust. Please note that the Trust has series other than those that comprise the Funds. Each Fund’s Shares will be offered on a continuous basis from time to time. Of the seven Funds listed above, ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas (each, a “Natural Gas Fund” and collectively, the “Natural Gas Funds”) and ProShares Short Gold (the “Short Gold Fund”) have not, prior to the date of this Prospectus, commenced trading and do not have any performance history. The Shares of each Natural Gas Fund and the Short Gold Fund will be listed on the New York Stock Exchange Archipelago (the “NYSE Arca”) under the ticker symbols shown above. The Natural Gas Funds and the Short Gold Fund are expected to be offered beginning in the fourth quarter of 2011.

The Shares of ProShares Ultra DJ-UBS Commodity, ProShares UltraShort DJ-UBS Commodity, ProShares Ultra Euro and ProShares Ultra Yen are listed on the NYSE Arca under the ticker symbols shown above.

Each of the Funds are “geared” funds in the sense that each has an investment objective to match a multiple (i.e., 2x), the inverse (i.e., -1x) or an inverse multiple (i.e., -2x) of the performance of a benchmark for a single day, not for any other period. A “single day” is measured from the time a Fund calculates its respective net asset value per Share (“NAV”) to the time of the Fund’s next NAV calculation. NAV calculation times for the Funds range from 10:00 a.m. to 4:00 p.m. (Eastern Time); please see the section entitled “Summary—Creation and Redemption Transactions” on pages 2-3 for additional details on the NAV calculation times for the Funds.

INVESTING IN THE SHARES INVOLVES SIGNIFICANT RISKS. PLEASE REFER TO “RISK FACTORS” BEGINNING ON PAGE 4.

The Funds are not appropriate for all investors and present different risks than other funds. The Funds that use leverage are riskier than similarly benchmarked exchange-traded funds that do not use leverage. An investor should only consider an investment in a Fund if he or she understands the consequences of seeking daily leveraged, daily inverse or daily inverse leveraged investment results.

Each Fund seeks to return a multiple (2x, -1x or -2x) times the performance of its benchmark daily, not for any other period. The return of a Fund for a period longer than a day is the result of its return for each day compounded over the period and usually will differ from the Fund’s multiple times the return of the Fund’s benchmark for the period. Daily compounding of a Fund’s investment returns can dramatically and adversely affect its longer-term performance during periods of high volatility. Volatility may be at least as important to a Fund’s return for a period as the return of the Fund’s underlying benchmark. Each Ultra or UltraShort Fund uses leverage and should produce daily returns that are more volatile than that of its benchmark. For example, the daily return of an Ultra Fund with a 2x multiple should be approximately twice as volatile on a daily basis as is the return of a fund with an objective of matching the same benchmark. The daily returns of Short and UltraShort Funds are designed to be the inverse of, or twice the inverse of, the return that would be expected of a fund with an objective of matching the same benchmark. Shareholders who invest in Funds should actively monitor and manage their investments as frequently as on a daily basis.

Each Fund continuously offers and redeems, or will continuously offer and redeem, its Shares in blocks of 50,000 Shares (each such block, a “Creation Unit”). Only Authorized Participants may purchase and redeem Shares from a Fund and then only in Creation Units. An Authorized Participant is an entity that has entered into an Authorized Participant Agreement with the Trust and ProShare Capital Management LLC (the “Sponsor”). It is expected that after the date of this Prospectus, the initial Authorized Participant will, subject to certain terms and conditions, make minimum initial purchases of at least two initial Creation Units of 50,000 Shares of each Natural Gas Fund and the Short Gold Fund at an initial price per Share of $40.00, equal to $2,000,000 per Creation Unit. The Natural Gas Funds and the Short Gold Fund will not commence trading unless and until the initial Authorized Participant effects the minimum initial purchase with respect to such Funds. Following initial purchases by the initial Authorized Participant, Shares of the Funds are offered to Authorized Participants in Creation Units at each Fund’s NAV. Authorized Participants may then offer to the public, from time to time, Shares from any Creation Unit they create at a per-Share market price. The form of Authorized Participant Agreement and the related Authorized Participant Handbook set forth the terms and conditions under which an Authorized Participant may purchase or redeem a Creation Unit. Authorized Participants will not receive from any Fund, the Sponsor, or any of their affiliates, any fee or other compensation in connection with their sale of Shares to the public. An Authorized Participant may receive commissions or fees from investors who purchase Shares through their commission or fee-based brokerage accounts.

These securities have not been approved or disapproved by the United States Securities and Exchange Commission (the “SEC”) or any state securities commission nor has the SEC or any state securities commission passed upon the accuracy or adequacy of this Prospectus. Any representation to the contrary is a criminal offense.

NEITHER THE TRUST NOR ANY FUND IS A MUTUAL FUND OR ANY OTHER TYPE OF INVESTMENT COMPANY AS DEFINED IN THE INVESTMENT COMPANY ACT OF 1940, AS AMENDED (THE “1940 ACT”), AND NEITHER IS SUBJECT TO REGULATION THEREUNDER.

THE COMMODITY FUTURES TRADING COMMISSION HAS NOT PASSED UPON THE MERITS OF PARTICIPATING IN THIS POOL NOR HAS THE COMMISSION PASSED ON THE ADEQUACY OR ACCURACY OF THIS DISCLOSURE DOCUMENT.

The Shares are neither interests in nor obligations of any of the Sponsor, Wilmington Trust Company (the “Trustee”), or any of their respective affiliates. The Shares are not insured by the Federal Deposit Insurance Corporation or any other governmental agency.

It is anticipated that the initial Authorized Participant will purchase a minimum of two Creation Units of each of the Natural Gas Funds and the Short Gold Fund at a price of $40.00 per Share, equal to $2,000,000 per Creation Unit.

This prospectus has two parts: the offered series disclosure and the general pool disclosure. These parts are bound together and are incomplete if not distributed together to prospective participants.

YOU SHOULD CAREFULLY CONSIDER WHETHER YOUR FINANCIAL CONDITION PERMITS YOU TO PARTICIPATE IN A COMMODITY POOL. IN SO DOING, YOU SHOULD BE AWARE THAT COMMODITY INTEREST TRADING CAN QUICKLY LEAD TO LARGE LOSSES AS WELL AS GAINS. SUCH TRADING LOSSES CAN SHARPLY REDUCE THE NET ASSET VALUE OF THE POOL AND CONSEQUENTLY THE VALUE OF YOUR INTEREST IN THE POOL. IN ADDITION, RESTRICTIONS ON REDEMPTIONS MAY AFFECT YOUR ABILITY TO WITHDRAW YOUR PARTICIPATION IN THE POOL.

FURTHER, COMMODITY POOLS MAY BE SUBJECT TO SUBSTANTIAL CHARGES FOR MANAGEMENT, AND ADVISORY AND BROKERAGE FEES. IT MAY BE NECESSARY FOR THOSE POOLS THAT ARE SUBJECT TO THESE CHARGES TO MAKE SUBSTANTIAL TRADING PROFITS TO AVOID DEPLETION OR EXHAUSTION OF THEIR ASSETS. THIS DISCLOSURE DOCUMENT CONTAINS A COMPLETE DESCRIPTION OF EACH EXPENSE TO BE CHARGED THIS POOL, AT PAGES 42 THROUGH 44 AND A STATEMENT OF THE PERCENTAGE RETURN NECESSARY TO BREAK EVEN, THAT IS, TO RECOVER THE AMOUNT OF YOUR INITIAL INVESTMENT, AT PAGE 42 AND 43.

THIS BRIEF STATEMENT CANNOT DISCLOSE ALL THE RISKS AND OTHER FACTORS NECESSARY TO EVALUATE YOUR PARTICIPATION IN THIS COMMODITY POOL. THEREFORE, BEFORE YOU DECIDE TO PARTICIPATE IN THIS COMMODITY POOL, YOU SHOULD CAREFULLY STUDY THIS DISCLOSURE DOCUMENT, INCLUDING A DESCRIPTION OF THE PRINCIPAL RISK FACTORS OF THIS INVESTMENT, AT PAGES 4 THROUGH 20.

YOU SHOULD ALSO BE AWARE THAT THIS COMMODITY POOL MAY TRADE FOREIGN FUTURES OR OPTIONS CONTRACTS. TRANSACTIONS ON MARKETS LOCATED OUTSIDE THE UNITED STATES, INCLUDING MARKETS FORMALLY LINKED TO A UNITED STATES MARKET, MAY BE SUBJECT TO REGULATIONS WHICH OFFER DIFFERENT OR DIMINISHED PROTECTION TO THE POOL AND ITS PARTICIPANTS. FURTHER, UNITED STATES REGULATORY AUTHORITIES MAY BE UNABLE TO COMPEL THE ENFORCEMENT OF THE RULES OF REGULATORY AUTHORITIES OR MARKETS IN NON-UNITED STATES JURISDICTIONS WHERE TRANSACTIONS FOR THE POOL MAY BE EFFECTED.

THIS PROSPECTUS DOES NOT INCLUDE ALL OF THE INFORMATION OR EXHIBITS IN THE REGISTRATION STATEMENT OF THE TRUST. INVESTORS CAN READ AND COPY THE ENTIRE REGISTRATION STATEMENT AT THE PUBLIC REFERENCE FACILITIES MAINTAINED BY THE SEC IN WASHINGTON, D.C.

SHAREHOLDERS HAVE THE RIGHT, DURING NORMAL BUSINESS HOURS, TO HAVE ACCESS TO AND COPY (UPON PAYMENT OF REASONABLE REPRODUCTION COSTS) SUCH BOOKS AND RECORDS IN PERSON OR BY THEIR AUTHORIZED ATTORNEY OR AGENT. MONTHLY ACCOUNT STATEMENTS CONFORMING TO THE COMMODITY FUTURES TRADING COMMISSION (“CFTC”) AND THE NATIONAL FUTURES ASSOCIATION (THE “NFA”) REQUIREMENTS ARE POSTED ON THE SPONSOR’S WEBSITE AT WWW.PROSHARES.COM. ADDITIONAL REPORTS MAY BE POSTED ON THE SPONSOR’S WEBSITE AT THE DISCRETION OF THE SPONSOR OR AS REQUIRED BY REGULATORY AUTHORITIES. THERE WILL SIMILARLY BE DISTRIBUTED TO SHAREHOLDERS, NOT MORE THAN 90 DAYS AFTER THE CLOSE OF THE FUNDS’ FISCAL YEAR, CERTIFIED AUDITED FINANCIAL STATEMENTS. THE TAX INFORMATION RELATING TO SHARES OF EACH FUND NECESSARY FOR THE PREPARATION OF SHAREHOLDERS’ ANNUAL FEDERAL INCOME TAX RETURNS WILL ALSO BE DISTRIBUTED.

THE TRUST WILL FILE QUARTERLY AND ANNUAL REPORTS WITH THE SEC. INVESTORS CAN READ AND COPY THESE REPORTS AT THE SEC PUBLIC REFERENCE FACILITIES IN WASHINGTON, D.C. PLEASE CALL THE SEC AT 1–800–SEC–0330 FOR FURTHER INFORMATION.

NO DEALER, SALESMAN OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR MADE, SUCH OTHER INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE TRUST, ANY OF THE FUNDS, THE SPONSOR, THE AUTHORIZED PARTICIPANTS OR ANY OTHER PERSON.

THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER OR SOLICITATION TO SELL OR A SOLICITATION OF AN OFFER TO BUY, NOR SHALL THERE BE ANY OFFER, SOLICITATION, OR SALE OF THE SHARES IN ANY JURISDICTION IN WHICH SUCH OFFER, SOLICITATION, OR SALE IS NOT AUTHORIZED OR TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE ANY SUCH OFFER, SOLICITATION, OR SALE.

AUTHORIZED PARTICIPANTS MAY BE REQUIRED TO DELIVER A PROSPECTUS WHEN TRANSACTING IN SHARES. SEE “PLAN OF DISTRIBUTION” IN PART TWO OF THIS PROSPECTUS.

PART ONE

OFFERED SERIES DISCLOSURE

SUMMARY

Investors should read the following summary together with the more detailed information, including under the caption “Risk Factors,” and all exhibits to this Prospectus and the historical information specifically incorporated by reference in this Prospectus, including the financial statements and the notes to those financial statements in the Trust’s Annual Report on Form 10-K for the year ended December 31, 2010, as amended, and Quarterly Reports on Form 10-Q for the periods ended March 31, 2011 and June 30, 2011, as amended, before deciding to invest in any Shares. Please see the section entitled “Incorporation by Reference of Certain Documents” in Part Two of this Prospectus. For ease of reference, any references throughout this Prospectus to various actions taken by each of the Funds are actually actions that the Trust has taken on behalf of such Funds.

Definitions used in this Prospectus can be found in the Glossary in Appendix A.

THE NATURAL GAS FUNDS AND THE SHORT GOLD FUND HAVE NOT COMMENCED TRADING AND DO NOT HAVE ANY PERFORMANCE HISTORY.

Important Information About the Funds

Overview

The Funds offer investors the opportunity to obtain leveraged, inverse or inverse leveraged exposure to a particular benchmark. The Funds currently include funds linked to futures-based commodity indexes (the “Commodity Index Funds”), particular commodities (the “Commodity Funds”) or particular currencies (the “Currency Funds”). Each Fund targets a multiple, the inverse or an inverse multiple of the daily return of such benchmarks, rather than targeting a multiple, the inverse or an inverse multiple of the benchmark returns over any other period. Each “Ultra Fund,” “Short Fund” and “UltraShort Fund” seeks, on a daily basis, results that correspond to twice (2x), the inverse (-1x) or twice the inverse (-2x), respectively, of the performance of its corresponding benchmark.

Each Fund will engage in daily rebalancing to position its portfolio so that its exposure to its benchmark is consistent with such Fund’s daily investment objective. The impact of the benchmark’s movements during the day will affect whether a particular Fund’s portfolio needs to be repositioned. For example, if a Short or UltraShort Fund’s benchmark has risen on a given day, net assets of such Fund should fall, meaning that inverse exposure will need to be decreased. Conversely, if a Short or UltraShort Fund’s benchmark has fallen on a given day, net assets of such Fund should rise, meaning inverse exposure will need to be increased. For Ultra Funds, the Fund’s long exposure will need to be increased on days when such Fund’s benchmark rises and decreased on days when such Fund’s benchmark falls. Daily rebalancing and the compounding of each day’s return over time means that the return of each Fund for a period longer than a single day will be the result of each day’s returns compounded over the period, which will very likely differ from twice (2x), the inverse (-1x) or twice the inverse (-2x) of the return of the Fund’s benchmark for the period. A Fund will lose money if its benchmark’s performance is flat over time, and it is possible for a Fund to lose money over time even if its benchmark’s performance increases (or decreases in the case of a Short Fund or an UltraShort Fund), as a result of daily rebalancing, the benchmark’s volatility and compounding.

Each of the Funds generally invests or will invest in Financial Instruments (i.e., commodity-based or currency-based instruments whose value is derived from the value of an underlying asset, rate or benchmark (such asset, rate or benchmark, a “Reference Asset”)), including futures contracts and options on futures contracts, swap agreements, forward contracts and other commodity-based or currency-based options contracts, as a substitute for investing directly in commodities or currencies in order to gain exposure to the applicable commodity index, currency benchmark, commodity or currency. Financial Instruments also are used to produce economically “leveraged”, “inverse” or “inverse leveraged” investment results for the Funds.

In seeking to achieve the Funds’ investment objectives, the Sponsor uses a mathematical approach to investing. Using this approach, the Sponsor determines the type, quantity and mix of investment positions that the Sponsor believes in combination should produce daily returns consistent with the Funds’ objectives. The Sponsor relies upon a pre-determined model to generate orders that result in repositioning the Funds’ investments in accordance with their respective investment objective.

The Sponsor does not invest the assets of the Funds based on its view of the investment merit of a particular investment, other than for cash management purposes, nor does it conduct conventional commodity or currency research or analysis, or forecast market movement or trends in managing the assets of the Funds. Each Fund generally seeks to remain fully exposed at all times to its underlying benchmark without regard to market conditions, trends or direction.

ProShare Capital Management LLC, a Maryland limited liability company, serves as the Trust’s Sponsor, commodity pool operator and commodity trading advisor. The principal office of the Sponsor and the Funds is located at 7501 Wisconsin Avenue, Suite 1000, Bethesda, Maryland 20814. The telephone number of the Sponsor and each of the Funds is (240) 497-6400.

The Commodity Index Funds


Fund Name		Benchmark
ProShares Ultra DJ-UBS Commodity ProShares UltraShort DJ-UBS Commodity		Dow Jones—UBS Commodity Index^SM

ProShares Ultra DJ-UBS Natural Gas ProShares UltraShort DJ-UBS Natural Gas		Dow Jones—UBS Natural Gas Subindex^SM

The Commodity Funds


Fund Name		Benchmark
ProShares Short Gold		The daily performance of gold bullion as measured by the U.S. dollar p.m. fixing price for delivery in London

The Currency Funds


Fund Name		Benchmark
ProShares Ultra Euro		The U.S. dollar price of the Euro

ProShares Ultra Yen		The U.S. dollar price of the Japanese yen

Purchases and Sales in the Secondary Market, on the NYSE Arca

The Shares of each Fund are or will be listed on the NYSE Arca under the ticker symbols shown on the front cover of this Prospectus. Secondary market purchases and sales of Shares are subject to ordinary brokerage commissions and charges.

Creation and Redemption Transactions

Only an Authorized Participant may purchase (i.e., create) or redeem Creation Units in the Funds. Creation Units in a Fund are expected to be created when there is sufficient demand for Shares in such Fund that the market price per Share is at a premium to the NAV per Share. Authorized Participants will likely sell such Shares to the public at prices that are expected to reflect,

among other factors, the trading price of the Shares of such Fund and the supply of and demand for the Shares at the time of sale and are expected to fall between NAV and the trading price of the Shares at the time of sale. Similarly, it is expected that Creation Units in a Fund will be redeemed when the market price per Share of such Fund is at a discount to the NAV per Share. The Sponsor expects that the exploitation of such arbitrage opportunities by Authorized Participants and their clients and customers will tend to cause the public trading price of the Shares to track the NAV per Share of a Fund closely over time. Retail investors seeking to purchase or sell Shares on any day are expected to effect such transactions in the secondary market at the market price per Share, rather than in connection with the creation or redemption of Creation Units.

A creation transaction, which is subject to acceptance by SEI, generally takes place when an Authorized Participant deposits a specified amount of cash in exchange for a specified number of Creation Units. Similarly, Shares can be redeemed only in Creation Units, generally for cash. Except when aggregated in Creation Units, Shares are not redeemable by the Funds. The prices at which creations and redemptions occur are based on the next calculation of NAV after an order is received in a form described in the Authorized Participant Agreement and the related Authorized Participant Handbook. The manner by which Creation Units are purchased and redeemed is dictated by the terms of the Authorized Participant Agreement and Authorized Participant Handbook. By placing a purchase order, an Authorized Participant agrees to deposit cash with BBH&Co., the custodian of the Funds.

Creation and redemption transactions must be placed each day with SEI by the create/redeem cutoff time (stated below) to receive that day’s NAV. Because the primary trading session for the commodities and/or futures contracts underlying certain of the Funds have different closing (or fixing) times than U.S. Equity markets, the NAV calculation times range from 10:00 a.m. to 4:00 p.m. Eastern Time.


Underlying Benchmark	Create/Redeem Cutoff	NAV Calculation Time*
Gold	9:30 a.m. (Eastern Time)	10:00 a.m. (Eastern Time)

DJ-UBS Commodity	11:15 a.m. (Eastern Time)	2:30 p.m. (Eastern Time)

DJ-UBS Natural Gas	2:00 p.m. (Eastern Time)	2:30 p.m. (Eastern Time)

Euro	3:30 p.m. (Eastern Time)	4:00 p.m. (Eastern Time)

Yen	3:30 p.m. (Eastern Time)	4:00 p.m. (Eastern Time)

*	For Gold, this time may vary due to differences in when daylight savings time is effective between London and New York. The actual times equates to 3:00 p.m. London time.

Breakeven Amounts

A Fund will be profitable only if returns from the Fund’s investments exceed its “breakeven amount.” Estimated breakeven amounts are set forth in the table below. The estimated breakeven amounts represent the estimated amount of trading income that each Fund would need to achieve during one year to offset the Fund’s estimated fees, costs and expenses, net of any interest income earned by the Fund on its investments. It is not possible to predict whether a Fund will break even at the end of the first twelve months of an investment or any other period. See “Charges—Breakeven Table,” beginning on page 42, for more detailed tables showing Breakeven Amounts.


Fund Name	Breakeven Amount (% Per Annum of Average Daily NAV)*		Assumed Selling Price Per Share*		Breakeven Amount ($ for the Assumed Selling Price Per Share)*
ProShares Ultra DJ-UBS Commodity		0.93	$	25.00		0.23
ProShares UltraShort DJ-UBS Commodity		0.93	$	25.00		0.23
ProShares Ultra DJ-UBS Natural Gas		1.11	$	40.00		0.44
ProShares UltraShort DJ-UBS Natural Gas		1.22	$	40.00		0.49
ProShares Short Gold		0.95	$	40.00		0.38
ProShares Ultra Euro		0.93	$	25.00		0.23
ProShares Ultra Yen		0.93	$	25.00		0.23

The breakeven analysis set forth in this table assumes that the Shares have a constant month-end NAV, and assumes that the selling price per Share will equal the NAV. The analysis is based on an assumed NAV per Share of each Fund as listed in the table above under Assumed Selling Price Per Share. The actual NAV of each Fund differs and is likely to change on a daily basis. The initial price per Share to be paid by the initial Authorized Participants is expected to be $40.00 per Share for each of the Natural Gas Funds and the Short Gold Fund. The actual NAV of each of the Natural Gas Funds and the Short Gold Fund will differ after the initial purchases by the initial Authorized Participants and is likely to change on a daily basis.

Before investors invest in the Shares, they should be aware that there are various risks. Investors should consider carefully the risks described below together with all of the other information included in this Prospectus, as well as information found in documents incorporated by reference in this Prospectus, before they decide to purchase any Shares. These risk factors may be amended, supplemented or superseded from time to time by risk factors contained in any prospectus supplement or post-effective amendment we file with the SEC in the future.

Due to the compounding of daily returns, the Funds’ returns over periods longer than one day will likely differ in amount and possibly even direction from the Fund multiple times the benchmark return for the period.

Each of the Funds are “geared” funds in the sense that each has an investment objective to match a multiple (i.e., 2x), the inverse (i.e., -1x) or an inverse multiple (i.e., -2x) of the performance of a benchmark on a given day. Each Fund seeks investment results for a single day only, as measured from NAV calculation time to NAV calculation time, and not for any other period (see “Summary—Creation and Redemption Transactions” for the NAV calculation time of each Fund). The return of a Fund for a period longer than a day is the result of its return for each day compounded over the period and usually will differ from twice (2x), the inverse (-1x) or twice the inverse (-2x) of the return of the Fund’s benchmark for the period. A Fund will lose money if its benchmark’s performance is flat over time, and it is possible for a Fund to lose money over time even if its benchmark’s performance increases (or decreases in the case of a Short Fund or an UltraShort Fund), as a result of daily rebalancing, the benchmark’s volatility and compounding. Longer holding periods, higher index volatility, inverse multiples and greater leverage each affect the impact of compounding on a Fund’s returns. Daily compounding of a Fund’s investment returns can dramatically and adversely affect its longer-term performance during periods of high volatility. Volatility may be at least as important to a Fund’s return for a period as the return of the Fund’s underlying benchmark.

Each Ultra or UltraShort Fund uses leverage and should produce daily returns that are more volatile than that of its benchmark. For example, the daily return of an Ultra Fund with a 2x multiple should be approximately twice as volatile on a daily basis as is the return of a fund with an objective of matching the same benchmark. The daily returns of Short and UltraShort Funds are designed to be the inverse of, or twice the inverse of, the return that would be expected of a fund with an objective of matching the same benchmark. The Funds are not appropriate for all investors and present different risks than other funds. The Funds that use leverage are riskier than similarly benchmarked exchange-traded funds that do not use leverage. An investor should only consider an investment in a Fund if he or she understands the consequences of seeking daily leveraged, daily inverse or daily inverse leveraged investment results. Daily objective geared funds, if used properly and in conjunction with the investor’s view on the future direction and volatility of the markets, can be useful tools for investors who want to manage their exposure to various markets and market segments and who are willing to monitor and/or periodically rebalance their portfolios. Shareholders who invest in Funds should actively monitor and manage their investments as frequently as on a daily basis.

The hypothetical example below illustrates how daily geared fund returns can behave for periods longer than one day. Take a hypothetical fund XYZ that seeks to double the daily performance of benchmark XYZ. On each day, fund XYZ performs in line with its objective (twice (2x) the benchmark’s daily performance before fees and expenses). Notice that over the entire five-day period, the fund’s total return is considerably less than double that of the period return of the benchmark. For the five-day period, benchmark XYZ gained 5.1% while fund XYZ gained 9.8% (versus 10.2% (or 2x 5.1%)). In other scenarios, the return of a daily rebalanced fund could be greater than double the benchmark’s return.

This effect is caused by compounding, which exists in all investments, but has a more significant impact in geared funds. In general, during periods of higher benchmark volatility, compounding will cause longer term results to be less than twice the return of the benchmark (or less than the inverse (-1x) or twice the inverse (-2x) times the return of the benchmarks for the Short Funds and the UltraShort Funds, respectively). This effect becomes more pronounced as volatility increases. Conversely, in periods of lower benchmark volatility (particularly when combined with higher benchmark returns), fund returns over longer periods can be higher than twice (2x) the return of the benchmark. Actual results for a particular period, before fees and expenses, are also dependent on the magnitude of the benchmark return in addition to the benchmark volatility. (Similar effects exist for Short Funds and the UltraShort Funds, and the significance of this effect is even greater with such inverse or inverse leveraged funds.)

The graphs that follow illustrate this point. Each of the graphs shows a simulated hypothetical one year performance of a benchmark compared with the performance of a geared fund that perfectly achieves its geared daily investment objective. The graphs demonstrate that, for periods greater than one day, a geared fund is likely to underperform or over-perform (but not match) the benchmark performance (or the inverse of the benchmark performance) times the multiple stated as the daily fund objective. Investors should understand the consequences of holding daily rebalanced funds for periods longer than a single day and should actively monitor and manage their investments as frequently as on a daily basis. A one-year period is used solely for illustrative purposes. Deviations from the benchmark return (or the inverse of the benchmark return) times the fund multiple can occur over periods as short as two days (each day as measured from NAV to NAV) and may also occur in periods shorter than one day (when measured intraday as opposed to NAV to NAV). See “— Intraday Price Performance Risk” below for additional details. To isolate the impact of leverage, these graphs assume: a) no fund expenses or transaction costs; b) borrowing/lending rates (to obtain required leverage, inverse or inverse leveraged exposure) and cash reinvestment rates of zero percent; and c) the fund consistently maintaining perfect exposure (2x, -1x or -2x) as of the fund’s NAV time each day. If these assumptions were different, the fund’s performance would be different than that shown. If fund expenses, transaction costs and financing expenses greater than zero percent were included, the fund’s performance would be lower than shown. Each of the graphs also assumes a volatility rate of 45% which is an approximate average of the five-year historical volatility rate of the most volatile benchmark referenced herein (Dow Jones—UBS Natural Gas Subindex^SM). A benchmark’s volatility rate is a statistical measure of the magnitude of fluctuations in its returns.

The historical five year average volatility of the benchmarks utilized by the Funds ranges from 10.90 to 45.43, as set forth in the table below.

The tables below illustrate the impact of two factors that affect a geared fund’s performance, benchmark volatility and benchmark return. Benchmark volatility is a statistical measure of the magnitude of fluctuations in the returns of a benchmark and is calculated as the standard deviation of the natural logarithms of one plus the benchmark return (calculated daily), multiplied by the square root of the number of trading days per year (assumed to be 252). The tables show estimated fund returns for a number of combinations of benchmark return and benchmark volatility over a one-year period. To isolate the impact of leverage, these graphs assume: a) no fund expenses or transaction costs; b) borrowing/lending rates of zero percent (to obtain required leverage, inverse or inverse leveraged exposure) and cash reinvestment rates of zero percent; and c) the fund consistently maintaining perfect exposure (2x, -1x or -2x) as of the funds’ NAV time each day. If these assumptions were different, the fund’s performance would be different than that shown. If fund expenses, transaction costs and financing expenses were included, the fund’s performance would be lower than shown. The first table below shows an example in which a geared fund has an investment objective to correspond to twice (2x) the daily performance of a benchmark. The geared fund could incorrectly be expected to achieve a 20% return on a yearly basis if the benchmark return was 10%, absent the effects of compounding. However, as the table shows, with a benchmark volatility of 40%, such a fund would return 3.1%, again absent the effects of compounding. In the charts below, shaded areas represent those scenarios where a geared fund with the investment objective described will outperform (i.e., return more than) the benchmark performance times the stated multiple in the fund’s investment objective; conversely areas not shaded represent those scenarios where the fund will underperform (i.e., return less than) the benchmark performance times the multiple stated as the daily fund objective.

Estimated Fund Return Over One Year When the Fund Objective is to Seek Daily Investment Results, Before Fees and Expenses, that Correspond to Twice (2x) the Daily Performance of a Benchmark.

Estimated Fund Return Over One Year When the Fund Objective is to Seek Daily Investment Results, Before Fees and Expenses, that Correspond to the Inverse (-1x) of the Daily Performance of a Benchmark.

Estimated Fund Return Over One Year When the Fund Objective is to Seek Daily Investment Results, Before Fees and Expenses, that Correspond to Twice the Inverse (-2x) of the Daily Performance of a Benchmark.

The foregoing tables are intended to isolate the effect of benchmark volatility and benchmark performance on the return of leveraged, inverse or inverse leveraged funds. The Funds’ actual returns may be significantly greater or less than the returns shown above as a result of any of the factors discussed above or under the below risk factor describing correlation risks.

While the Funds expect to meet their investment objectives, there is no guarantee they will do so. Factors that may affect a Fund’s ability to meet its investment objective include: (1) the Sponsor’s ability to purchase and sell Financial Instruments in a manner that correlates to a Fund’s objective; (2) an imperfect correlation between the performance of the instruments held by a Fund, such as swaps, futures contracts and/or forward contracts, and the performance of the applicable benchmark; (3) bid-ask spreads on such instruments; (4) fees, expenses, transaction costs, financing costs associated with the use of derivatives and commission costs; (5) holding instruments traded in a market that has become illiquid or disrupted; (6) a Fund’s Share prices being rounded to the nearest cent and/or valuation methodologies; (7) changes to a benchmark that are not disseminated in advance; (8) the need to conform a Fund’s portfolio holdings to comply with investment restrictions or policies or regulatory or tax law requirements; (9) early and unanticipated closings of the markets on which the holdings of a Fund trade, resulting in the inability of the Fund to execute intended portfolio transactions; and (10) accounting standards.

Further, in order to achieve a high degree of correlation with their applicable underlying benchmarks, the Funds seek to rebalance their portfolios daily to keep exposure consistent with their investment objectives. Being materially over- or under-exposed to the benchmarks may prevent such Funds from achieving a high degree of correlation with their applicable underlying benchmarks. Market disruptions or closure, regulatory restrictions or extreme market volatility will adversely affect such Funds’ ability to adjust exposure to requisite levels. The target amount of portfolio exposure is impacted dynamically by the benchmarks’ movements during each day. Because of this, it is unlikely that the Funds will be perfectly exposed (i.e., 2x, -1x, or -2x, as applicable) at the end of each day, and the likelihood of being materially under- or over-exposed is higher on days when the benchmark levels are volatile near the close of the trading day.

Each Fund is rebalanced at or about the time of its NAV calculation time (which in many cases is other than at the close of the U.S. equity markets). As such, the intraday position of the Fund will generally be different from the Fund’s stated daily investment objective (i.e., 2x, -1x or -2x). When shares are bought intraday, the performance of a Fund’s shares until the Fund’s next NAV calculation will generally be greater than or less than the Fund’s stated daily multiple, inverse or inverse multiple.

The use of leverage and/or inverse positions could result in the total loss of an investor’s investment.

The Funds that utilize leverage in seeking to achieve their respective investment objectives will lose more money in market environments adverse to their respective daily investment objectives than Funds that do not employ leverage. The use of leverage and/or inverse positions could result in the total loss of an investor’s investment.

For example, because the Ultra and UltraShort Funds offered hereby include a two times (2x) or a two times the inverse (-2x) multiplier, a single-day movement in the relevant benchmark approaching 50% at any point in the day could result in the total loss or almost total loss of an investor’s investment if that movement is contrary to the investment objective of the Fund in which an investor has invested, even if such Fund’s benchmark subsequently moves in an opposite direction, eliminating all or a portion of the movement. This would be the case with downward single-day or intraday movements in the underlying benchmark of an Ultra Fund or upward one-day or intraday movements in the benchmark of an UltraShort Fund, even if the underlying benchmark (and the Reference Assets comprising that benchmark) maintains a level greater than zero at all times.

Each Fund seeks to provide investment results (before fees and expenses) that correspond to a multiple of, the inverse of or an inverse multiple of the daily performance of a benchmark at all times, even during periods when the applicable benchmark is flat as well as when the benchmark is moving in a manner which causes the Fund’s NAV to decline, thereby causing losses to such Fund.

Other than for cash management purposes, the Funds are not actively managed by traditional methods, which typically involve effecting changes in the composition of a portfolio on the basis of judgments relating to economic, financial and market considerations with a view toward obtaining positive results under all market conditions. Rather, the Sponsor seeks to cause the NAV to track the daily performance of a benchmark in accordance with each Fund’s investment objective, even during periods in which the benchmark is flat or moving in a manner which causes the NAV of a Fund to decline. It is possible to lose money over time when an underlying benchmark is up for the corresponding Ultra Fund, or down for the corresponding Short or UltraShort Fund, due to the effects of daily rebalancing, volatility and compounding (see the risk factors above for additional details).

Risks Specific to the Commodity Funds, the Commodity Index Funds and the Currency Funds.

With regard to the Commodity Funds and the Commodity Index Funds, several factors may affect the price of an underlying Reference Asset, and in turn, the Financial Instruments and other assets, if any, owned by such a Fund, including, but not limited to:

With regard to the Currency Funds, several factors may affect the value of foreign currencies or the U.S. dollar, and in turn, Financial Instruments and other assets, if any, owned by a Fund, including, but not limited to:

These factors interrelate in complex ways, and the effect of one factor on the market value of a Fund may offset or enhance the effect of another factor.

Financial Instruments linked to commodities and currencies can be highly volatile and the Funds may experience large losses when buying, selling or holding such instruments.

Financial Instruments linked to commodities and currencies can be highly volatile compared to investments in traditional securities and Funds holding Financial Instruments may experience large losses. The value of commodity-linked Financial Instruments or currency-linked Financial Instruments may be affected by changes in overall market movements, commodity or currency benchmarks, as the case may be, volatility, changes in interest rates, or factors affecting a particular industry, commodity or currency, such as drought, floods, fires, weather, livestock disease, pipeline ruptures or spills, embargoes, tariffs and international, economic, political and regulatory developments. In particular, trading in natural gas futures contracts (or other Financial Instruments linked to natural gas) has been very volatile and can be expected to be very volatile in the future. High volatility may have an adverse impact on the Funds beyond the impact of any performance-based losses of the underlying benchmarks.

Certain of the Funds invest in or have exposure to futures contracts and are subject to risks related to rolling. The contractual obligations of a buyer or seller holding a futures contract to expiration may generally be satisfied by taking or making physical delivery of the underlying Reference Asset or settling in cash as designated in the contract specifications. Alternatively, futures contracts may be closed out prior to expiration by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. Once this date is reached, the futures contract “expires.” As the futures contracts held by a Fund near expiration, they are generally closed out and replaced by contracts with a later expiration. This process is referred to as “rolling.”

When the market for these contracts is such that the prices are higher in the more distant delivery months than in the nearer delivery months, the sale during the course of the “rolling process” of the more nearby contract would take place at a price that is lower than the price of the more distant contract. This pattern of higher futures prices for longer expiration futures contracts is often

referred to as “contango.” Alternatively, when the market for these contracts is such that the prices are higher in the nearer months than in the more distant months, the sale during the course of the “rolling process” of the more nearby contract would take place at a price that is higher than the price of the more distant contract. This pattern of higher futures prices of shorter expiration futures contracts is referred to as “backwardation.”

There have been extended periods in which contango or backwardation has existed in the futures contract markets for various types of futures contracts, and such periods can be expected to occur in the future. The presence of contango in certain futures contracts at the time of rolling would be expected to adversely affect the Ultra Funds, and positively affect the Short Funds and UltraShort Funds. Similarly, the presence of backwardation in certain futures contracts at the time of rolling such contracts would be expected to adversely affect the Short Funds and UltraShort Funds and positively affect the Ultra Funds.

ProShares Short Gold is designed to track an inverse of the daily performance of gold bullion and does not invest in bullion itself as certain other exchange-traded products do. Rather this Commodity Fund uses Financial Instruments to gain exposure to Gold. Not investing directly in bullion may introduce additional tracking error and this Commodity Fund is subject to the effects of contango and backwardation described above.

Using Financial Instruments such as forwards and futures in an effort to replicate the inverse performance of gold bullion may introduce tracking error to the performance of this Commodity Fund. The primary cause of tracking error resulting from not investing directly in bullion is expected to be caused by the need to roll futures or forward contracts as described above and the resulting possibility that contango or backwardation can occur. Gold historically exhibits contango markets during most periods. The existence of backwardated markets in gold would have an adverse impact on the ProShares UltraShort Gold Fund.

The Commodity Index Funds are linked to indexes comprised of commodity futures contracts, and are not directly linked to the spot prices of the underlying physical commodities. Commodity futures contracts may perform very differently from the spot price of the underlying physical commodities.

Each Commodity Index Fund is designed to track a multiple, the inverse or an inverse multiple of the daily performance of its applicable benchmark, which is intended to reflect the performance of underlying physical commodities as measured by the prices of futures contracts on such physical commodities. The Commodity Index Funds are not directly linked to the spot price of the physical commodities. While prices of swaps, futures contracts and other derivative contracts are, as a rule, related to the prices of an underlying cash market, they are not perfectly correlated. It is possible that during certain time periods, derivative contract prices will cease to track cash market prices and may be substantially lower or higher than cash market prices for the underlying commodity due to differences in derivative contract terms or as supply, demand or other economic or regulatory factors become more pronounced in either the cash or derivative markets. While arbitrage opportunities tend to keep prices closely aligned, there can be no assurance that pricing anomalies will not occur. Depending upon the direction and level of the benchmark changes, the Funds may underperform or outperform a portfolio of cash market commodities.

Financial Instruments cannot always be liquidated at the desired price. It is difficult to execute a trade at a specific price when there is a relatively small volume of buy and sell orders in a market. A market disruption can also make it difficult to liquidate a position or find a swap or forward contract counterparty at a reasonable cost.

Market illiquidity may cause losses for the Funds. The large size of the positions which the Funds may acquire increases the risk of illiquidity by both making their positions more difficult to liquidate and increasing the losses incurred while trying to do so. Any type of disruption or illiquidity will potentially be exacerbated due to the fact that the Funds will typically invest in Financial Instruments related to one benchmark, which in many cases is highly concentrated.

It may not be possible to gain exposure to the benchmarks using exchange-traded Financial Instruments in the future.

The Funds may utilize exchange-traded Financial Instruments. It may not be possible to gain exposure to the benchmarks with these Financial Instruments in the future. If these Financial Instruments cease to be traded on regulated exchanges, they may be replaced with Financial Instruments traded on trading facilities that are subject to lesser degrees of regulation or, in some cases, no substantive regulation. As a result, trading in such Financial Instruments, and the manner in which prices and volumes are reported by the relevant trading facilities, may not be subject to the provisions of, and the protections afforded by, the U.S. Commodity Exchange Act of 1936 (the “CEA”), or other applicable statutes and related regulations, that govern trading on regulated U.S. futures exchanges, or similar statutes and regulations that govern trading on regulated U.K. futures exchanges. In addition, many electronic trading facilities have only recently initiated trading and do not have significant trading histories. As a result, the trading of contracts on such facilities, and the inclusion of such contracts in a benchmark index, may be subject to certain risks not presented by U.S. or U.K. exchange-traded futures contracts, including risks related to the liquidity and price histories of the relevant contracts.

Fees are charged regardless of a Fund’s returns and may result in depletion of assets.

The Funds are subject to the fees and expenses described herein which are payable irrespective of a Fund’s returns. Such fees and expenses include asset-based fees of 0.95% per annum of each Fund’s average daily NAV, as well as the effects of commissions, trading spreads, and embedded financing, borrow costs and fees associated with swaps, forwards, futures contracts, and costs relating to the purchase of U.S. Treasury securities or similar high credit quality, short-term fixed-income or similar securities. Additional charges may include other fees as applicable.

To the extent that a Fund benchmark is an index, changes implemented by the index provider that affect the composition and valuation of the index could adversely affect the value of an investment in a Fund’s Shares.

Certain Fund benchmarks are indexes maintained by index providers that are unaffiliated with the Funds or the Sponsor. The policies implemented by index providers concerning the calculation of the level of an index or the composition of an index could affect the level of the index and, therefore, the value of Shares. The index providers may change the composition of its indexes, or make other methodological changes that could change the level of an index. Additionally, the index providers may alter, discontinue or suspend calculation or dissemination an index. Any of these actions could adversely affect the value of Shares of a Fund using that index as a benchmark. Index providers have no obligation to consider Fund shareholder interests in calculating or revising an index. Any of these actions could adversely affect the value of Fund Shares. Calculation of an index may not be possible or feasible under certain events or circumstances that are beyond the reasonable control of the Sponsor, which in turn may adversely impact both the index and/or the Shares, as applicable. Additionally, index calculations may be disrupted by rollover disruptions, rebalancing disruptions and/or market emergencies, which may have an adverse effect on the value of the Shares.

The Funds are subject to counterparty risks, credit risks and other risks associated with swap agreements and forward contracts, which could result in significant losses to such Funds.

Certain of the Funds may use swap agreements and/or forward contracts as a means to achieve their respective investment objectives. These Financial Instruments are traded over the counter and are essentially unregulated by the CFTC. Investors, therefore, do not receive the protection of CFTC regulation or the statutory scheme of the CEA in connection with each Fund’s swap agreements or forward contracts. The lack of regulation in these markets could expose investors to significant losses under certain circumstances including in the event of trading abuses or financial failure by participants.

Unlike in futures contracts, the counterparty to swap agreements or forward contracts is generally a single bank or other financial institution, rather than a clearing organization backed by a group of financial institutions. As a result, a Fund is subject to credit risk with respect to the amount it expects to receive from counterparties to swaps and forward contracts entered into as part of that Fund’s principal investment strategy. If a counterparty becomes bankrupt or otherwise fails to perform its obligations due to financial difficulties, a Fund could suffer significant losses on these contracts and the value of an investor’s investment in a Fund may decline.

The Funds have sought to mitigate these risks by generally requiring that the counterparties for each Fund agree to post collateral for the benefit of the Fund, marked to market daily. To the extent any such collateral is insufficient or there are delays in accessing the collateral, the Funds will be exposed to counterparty risk as described above, including possible delays in recovering amounts as a result of bankruptcy proceedings. The Funds typically enter into transactions only with large, well-capitalized and well established financial institutions.

Swaps or forward contracts have terms that make them less marketable than futures contracts. Swaps or forward contracts are less marketable because they are not traded on an exchange, do not have uniform terms and conditions, and are generally entered into based upon the creditworthiness of the parties and the availability of credit support, such as collateral, and in general, are not transferable without the consent of the counterparty. Swap agreements and forward contracts may entail breakage costs if terminated prior to the final maturity date.

If the level of the Fund’s benchmark has a dramatic intraday move that would cause a material decline in the Fund’s NAV, the terms of the swap may permit the counterparty to immediately close out the transaction with the Fund. In that event, it may not be possible for the Fund to enter into another swap agreement or to invest in other Financial Instruments necessary to achieve the desired exposure consistent with the Fund’s objective. This, in turn, may prevent the Fund from achieving its investment objective, particularly if the level of the Fund’s benchmark reverses all or part of its intraday move by the end of the day.

Historical correlation trends between Fund benchmarks and other asset classes may not continue or may reverse, limiting or eliminating any potential diversification or other benefit from owning a Fund.

To the extent that an investor purchases a Fund seeking diversification benefits based on the historic correlation (whether positive or negative) between the returns of the commodity or currency markets and other asset classes, such historic correlation may not continue or may reverse itself. In this circumstance, the diversification or other benefits sought may be limited or nonexistent.

The Funds have limited or no operating history, and, as a result, investors have only a limited performance history, if any, to serve as a factor for evaluating an investment in the Funds.

The Funds have limited or no performance history upon which to evaluate an investor’s investment in the Funds. Although past performance is not necessarily indicative of future results, if the Funds had longer performance histories, or any performance history in the case of the Natural Gas Funds or the Short Gold Fund, such performance histories might (or might not) provide investors with more information on which to evaluate an investment in the Funds. Likewise, certain benchmarks have a limited history which might (or might not) provide investors with more information on which to evaluate an investment in the Funds.

Investors cannot be assured of the Sponsor’s continued services, the discontinuance of which may be detrimental to the Funds.

Investors cannot be assured that the Sponsor will be able to continue to service the Funds for any length of time. If the Sponsor discontinues its activities on behalf of the Funds, the Funds may be adversely affected, as there may be no entity servicing the Funds for a period of time. If the Sponsor’s registrations with the CFTC or memberships in the NFA were revoked or suspended, the Sponsor would no longer be able to provide services and/or to render trading advice to the Funds. As the Funds themselves are not registered with the CFTC in any capacity, if the Sponsor were unable to provide services and/or trading advice to the Funds, the Funds would be unable to pursue their investment objectives unless and until the Sponsor’s ability to provide services and trading advice to the Funds was reinstated or a replacement for the Sponsor as commodity pool operator and/or commodity trading advisor could be found. Such an event could result in termination of the Funds.

The lack of active trading markets for the Shares of the Funds may result in losses on investors’ investments at the time of disposition of Shares.

Although the Shares of the Funds are or will be listed and traded on the NYSE Arca, there can be no guarantee that an active trading market for the Shares of the Funds will develop or be maintained. If investors need to sell their Shares at a time when no active market for them exists, the price investors receive for their Shares, assuming that investors are able to sell them, likely will be lower than the price that investors would receive if an active market did exist.

Investors may be adversely affected by redemption or creation orders that are subject to postponement, suspension or rejection under certain circumstances.

A Fund may, in its discretion, suspend the right of creation or redemption or may postpone the redemption or purchase settlement date, for (1) any period during which the NYSE Arca, New York Stock Exchange (“NYSE”) or any other exchange, marketplace or trading center, deemed to affect the normal operations of the Funds, is closed, or when trading is restricted or suspended or restricted on such exchanges in any of the Funds’ futures contracts, (2) any period during which an emergency exists as a result of which the fulfillment of a purchase order or the redemption distribution is not reasonably practicable, or (3) such other period as the Sponsor determines to be necessary for the protection of the shareholders of the Funds. In addition, a Fund will reject a redemption order if the order is not in proper form as described in the Authorized Participant Agreement or if the fulfillment of the order might be unlawful. Any such postponement, suspension or rejection could adversely affect a redeeming Authorized Participant. For example, the resulting delay may adversely affect the value of the Authorized Participant’s redemption proceeds if the NAV of a Fund declines during the period of delay. The Funds disclaim any liability for any loss or damage that may result from any such suspension or postponement. Suspension of creation privileges may adversely impact how the Shares are traded and arbitraged on the Exchange, which could cause them to trade at levels materially different (premiums and discounts) from the fair value of their underlying holdings.

The NAV may not always correspond to market price and, as a result, investors may be adversely affected by the creation or redemption of Creation Units at a value that differs from the market price of the Shares.

The NAV per Share of a Fund changes as fluctuations occur in the market value of a Fund’s portfolio. Investors should be aware that the public trading price of a number of Shares of a Fund otherwise amounting to a Creation Unit may be different from the NAV of an actual Creation Unit (i.e., 50,000 individual Shares may trade at a premium over, or a discount to, NAV of a Creation Unit of a Fund), and similarly the public trading price per Share of a Fund may be different from the NAV per Share of the Fund. Consequently, an Authorized Participant may be able to create or redeem a Creation Unit of a Fund at a discount or a premium to the public trading price per Share of that Fund. This price difference may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for Shares of a Fund are closely related, but not identical, to the same forces influencing the price of an underlying Reference Asset at any point in time.

Authorized Participants or their clients or customers may have an opportunity to realize a profit if they can purchase a Creation Unit at a discount to the public trading price of the Shares of a Fund or can redeem a Creation Unit at a premium over the public trading price of the Shares of a Fund. The Sponsor expects that the exploitation of such arbitrage opportunities by Authorized Participants and their clients and customers will tend to cause the public trading price to track NAV per Share of the Funds closely over time.

The value of a Share may be influenced by nonconcurrent trading hours between the NYSE Arca and the market in which the Financial Instruments (or related Reference Assets) held by a Fund are traded. The Shares of each Fund trade, or will trade, on the NYSE Arca from 9:30 a.m. to 4:00 p.m. (Eastern Time). The Financial Instruments (and/or the Reference Assets) held by a particular Fund, however, may have different fixing or settlement times. Consequently, liquidity in the Financial Instruments (and/or the Reference Assets) may be reduced after such fixing or settlement time. As a result, during the time when the NYSE Arca is open but after the applicable fixing or settlement time, trading spreads and the resulting premium or discount on the Shares of a Fund may widen, and, therefore, increase the difference between the price of the Shares of a Fund and the NAV of such Shares.

The number of underlying components included in a Fund’s benchmark may impact volatility, which could adversely affect an investment in the Shares.

Each of the indices for the Commodity Index Funds is concentrated in terms of the number and type of commodities represented, and some of the subindexes are solely concentrated in a single commodity. The benchmarks for the Commodity Funds and the Currency Funds are concentrated solely on a single Reference Asset. Investors should be aware that other commodity and currency benchmarks may be more diversified in terms of both the number and variety of commodities and currencies included. Concentration in fewer underlying Reference Assets may result in a greater degree of volatility in a benchmark and the NAV of the Fund which tracks that benchmark under specific market conditions and over time.

Trading on exchanges outside the United States is not subject to U.S. regulation and may result in different or diminished investor protections.

Some of the Funds’ trading may be conducted on exchanges outside the United States. Trading on such exchanges is not regulated by any U.S. governmental agency and may involve certain risks not applicable to trading on U.S. exchanges, including different or diminished investor protections. In trading contracts denominated in currencies other than U.S. dollars, the Shares are subject to the risk of adverse exchange rate movements between the dollar and the functional currencies of such contracts. Investors could incur substantial losses from trading on foreign exchanges which such investors would not have otherwise been subject had the Funds’ trading been limited to U.S. markets.

Competing claims of intellectual property rights may adversely affect the Funds and an investment in the Shares.

Although the Sponsor does not anticipate that such claims will adversely impact the Funds, it is impossible to provide definite assurances that no such negative impact will occur. The Sponsor believes that it has properly licensed or obtained the appropriate consent of all necessary parties with respect to intellectual property rights. However, other third parties could allege ownership as to such rights and may bring an action in asserting their claims. To the extent any action is brought by a third party asserting such rights, the expenses in litigating, negotiating, cross-licensing or otherwise settling such claims may adversely affect the Funds.

Investors may be adversely affected by an overstatement or understatement of the NAV calculation of the Funds due to the valuation method employed on the date of NAV calculation.

Calculating the NAV of the Funds includes, in part, any unrealized profits or losses on open Financial Instrument positions. Under normal circumstances, the NAV of a Fund reflects the value of the Financial Instruments held by a Fund, as of the time the NAV is being calculated. However, if any of the Financial Instruments held by a Fund could not be purchased or sold on a day when a Fund is accepting creation and redemption orders (due to the operation of daily limits or other rules of the exchange or otherwise), a Fund may be improperly exposed which could cause it to fail to meet its stated investment objective. Alternatively, a Fund may attempt to calculate the fair value of such Financial Instruments. In such a situation, there is a risk that the calculation of the relevant benchmark, and therefore, the NAV of the applicable Fund on such day, may not accurately reflect the realizable market value of the Financial Instruments underlying such benchmark.

The liquidity of the Shares may also be affected by the withdrawal from participation of Authorized Participants, which could adversely affect the market price of the Shares.

In the event that one or more Authorized Participants which have substantial interests in the Shares withdraw from participation, the liquidity of the Shares will likely decrease, which could adversely affect the market price of the Shares and result in investors incurring a loss on their investment.

Shareholders that are not Authorized Participants may only purchase or sell their Shares in secondary trading markets, and the conditions associated with trading in secondary markets may adversely affect investors’ investment in the Shares.

Only Authorized Participants may create or redeem Creation Units. All other investors that desire to purchase or sell Shares must do so through the NYSE Arca or in other markets, if any, in which the Shares may be traded.

NYSE Arca may halt trading in the Shares of a Fund which would adversely impact investors’ ability to sell Shares.

Trading in Shares of a Fund may be halted due to market conditions or, in light of NYSE Arca rules and procedures, for reasons that, in the view of the NYSE Arca, make trading in Shares of a Fund inadvisable. In addition, trading is subject to trading halts caused by extraordinary market volatility pursuant to “circuit breaker” rules that require trading to be halted for a specified period based on a specified decline or rise in a market index (e.g., Dow Jones Industrial Average) or in the price of a Fund’s Shares. Additionally the ability to short sell a Fund’s shares may be restricted when there is a 10% or greater change from the previous day’s official closing price. There can be no assurance that the requirements necessary to maintain the listing of the Shares of a Fund will continue to be met or will remain unchanged.

Shareholders do not have the protections associated with ownership of shares in an investment company registered under the 1940 Act.

None of the Funds are subject to registration or regulation under the 1940 Act. Consequently, shareholders do not have the regulatory protections provided to investors in investment companies.

Shareholders do not have the rights enjoyed by investors in certain other vehicles and may be adversely affected by a lack of statutory rights and by limited voting and distribution rights.

The Shares have limited voting and distribution rights. For example, shareholders do not have the right to elect directors, the Funds may enact splits or reverse splits without shareholder approval and the Funds are not required to pay regular distributions, although the Funds may pay distributions at the discretion of the Sponsor.

The value of the Shares will be adversely affected if the Funds are required to indemnify the Trustee.

Under the Amended and Restated Trust Agreement of the Trust, as may be further amended and restated from time to time (the “Trust Agreement”), the Trustee has the right to be indemnified for any liability or expense incurred without gross negligence or willful misconduct. That means the Sponsor may require the assets of a Fund to be sold in order to cover losses or liability suffered by it or by the Trustee. Any sale of that kind would reduce the NAV of one or more of the Funds.

Although the Shares of the Funds are limited liability investments, certain circumstances such as bankruptcy of a Fund will increase a shareholder’s liability.

The Shares of the Funds are limited liability investments; investors may not lose more than the amount that they invest plus any profits recognized on their investment. However, shareholders could be required, as a matter of bankruptcy law, to return to the estate of a Fund any distribution they received at a time when such Fund was in fact insolvent or in violation of the Trust Agreement.

The CEA requires a clearing broker to segregate all funds received from customers from such broker’s proprietary assets. There is a risk that assets deposited by the Sponsor on behalf of the Funds as margin with the FCMs may, in certain circumstances, be used to satisfy losses of other clients of the FCMs. If an FCM fails to segregate the funds received from the Sponsor, the assets of the Funds might not be fully protected in the event of the FCM’s bankruptcy. Furthermore, in the event of an FCM’s bankruptcy, Fund Shares could be limited to recovering only a pro rata share of all available funds segregated on behalf of the FCM’s combined customer accounts, even though certain property specifically traceable to a particular Fund was held by the FCM. Each FCM may, from time to time, have been the subject of certain regulatory and private causes of action.

In the event of a bankruptcy or insolvency of any exchange or a clearing house, a Fund could experience a loss of the funds deposited through its FCM as margin with the exchange or clearing house, a loss of any profits on its open positions on the exchange, and the loss of unrealized profits on its closed positions on the exchange.

A court could potentially conclude that the assets and liabilities of one Fund are not segregated from those of another series of the Trust and may thereby potentially expose assets in a Fund to the liabilities of another series of the Trust.

Each series of the Trust is a separate series of a Delaware statutory trust and not itself a separate legal entity. Section 3804(a) of the Delaware Statutory Trust Act (the “DSTA”) provides that if certain provisions are in the formation and governing documents of a statutory trust organized in series, and if separate and distinct records are maintained for any series and the assets associated with that series are held in separate and distinct records (directly or indirectly, including through a nominee or otherwise) and accounted for in such separate and distinct records separately from the other assets of the statutory trust, or any series thereof, then the debts, liabilities, obligations and expenses incurred, contracted for or otherwise existing with respect to a particular series are enforceable against the assets of such series only, and not against the assets of the statutory trust generally or any other series thereof, and none of the debts, liabilities, obligations and expenses incurred, contracted for or otherwise existing with respect to the statutory trust generally or any other series thereof shall be enforceable against the assets of such series. The Sponsor is not aware of any court case that has interpreted Section 3804(a) of the DSTA or provided any guidance as to what is required for compliance. The Sponsor maintains separate and distinct records for each series and accounts for them separately, but it is possible a court could conclude that the methods used did not satisfy Section 3804(a) of the DSTA and thus potentially expose assets in of a Fund to the liabilities of another series of the Trust.

Shareholders’ tax liability will exceed cash distributions on the Shares.

Shareholders of each Fund are subject to U.S. federal income taxation and, in some cases, state, local, or foreign income taxation on their share of the Fund’s taxable income, whether or not they receive cash distributions from the Fund. Each Fund does not currently expect to make distributions with respect to capital gains or ordinary income. Accordingly, shareholders of a Fund will not receive cash distributions equal to their share of the Fund’s taxable income or the tax liability that results from such income. A Fund’s income, gains, losses and deductions are allocated to shareholders on a monthly basis. If you own shares in a Fund at the beginning of a month and sell them during the month, you are generally still considered a shareholder through the end of that month.

The U.S. Internal Revenue Service (“IRS”) could adjust or reallocate items of income, gain, deduction, loss and credit with respect to the Shares if the IRS does not accept the assumptions or conventions utilized by the Fund.

U.S. federal income tax rules applicable to partnerships, which each Fund is anticipated to be treated as under the Internal Revenue Code of 1986, as amended (the “Code”), are complex and their application is not always clear. Moreover, the rules generally were not written for, and in some respects are difficult to apply to, publicly traded interests in partnerships. The Funds apply certain assumptions and conventions intended to comply with the intent of the rules and to report income, gain, deduction, loss and credit to shareholders in a manner that reflects the shareholders’ economic gains and losses, but these assumptions and conventions may not comply with all aspects of the applicable Regulations. It is possible therefore that the IRS will successfully assert that these assumptions or conventions do not satisfy the technical requirements of the Code or the Treasury regulations promulgated thereunder (the “Regulations”) and will require that items of income, gain, deduction, loss and credit be adjusted or reallocated in a manner that could be adverse to investors.

Investors could be adversely affected if the current treatment of long-term capital gains under current U.S. federal income tax law is changed or repealed in the future.

Under current law, long-term capital gains are taxed to non-corporate investors at a maximum U.S. federal income tax rate of 15%. This tax treatment may be adversely affected, changed or repealed by future changes in tax laws at any time and is currently scheduled to increase to 20% for tax years beginning after December 31, 2012.

Shareholders of each Fund may recognize significant amounts of ordinary income and short-term capital gain.

Due to the investment strategy of the Funds, the Funds may realize and pass-through to Shareholders significant amounts of ordinary income and short-term capital gains as opposed to long-term capital gains, which generally are taxed at a preferential rate. A Fund’s income, gains, losses and deductions are allocated to shareholders on a monthly basis. If you own shares in a Fund at the beginning of a month and sell them during the month, you are generally still considered a shareholder through the end of that month.

PROSPECTIVE INVESTORS ARE STRONGLY URGED TO CONSULT THEIR OWN TAX ADVISERS AND COUNSEL WITH RESPECT TO THE POSSIBLE TAX CONSEQUENCES TO THEM OF AN INVESTMENT IN THE SHARES OF A FUND; SUCH TAX CONSEQUENCES MAY DIFFER IN RESPECT OF DIFFERENT INVESTORS.

Regulatory changes or actions, including the implementation of new legislation, may alter the operations and profitability of the Funds.

Considerable regulatory attention has been focused on non-traditional investment pools which are publicly distributed in the United States. There is a possibility of future regulatory changes altering, perhaps to a material extent, the nature of an investment in the Funds or the ability of the Funds to continue to implement their investment strategies.

The futures markets are subject to comprehensive statutes, regulations, and margin requirements. In addition, the SEC, CFTC and the exchanges are authorized to take extraordinary actions in the event of a market emergency, including, for example, the retroactive implementation of speculative position limits or higher margin requirements, the establishment of daily price limits and the suspension of trading. The regulation of swaps and futures transactions in the United States is a rapidly changing area of law and is subject to modification by government and judicial action. The effect of any future regulatory change on the Funds is impossible to predict, but could be substantial and adverse.

In particular, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) was signed into law on July 21, 2010. The Act will make sweeping changes to the way in which the U.S. financial system is supervised and regulated. Title VII of the Dodd-Frank Act sets forth a new legislative framework for OTC derivatives, including Financial Instruments, such as swaps, in which certain of the Funds may invest. Title VII of the Dodd-Frank Act makes broad changes to the OTC derivatives market, grants significant new authority to the SEC and the CFTC to regulate OTC derivatives and market participants, and will require clearing and exchange trading of many OTC derivatives transactions.

Provisions in the Dodd-Frank Act include the requirement that position limits on commodity futures contracts be established; new registration, recordkeeping, capital and margin requirements for “swap dealers” and “major swap participants” as determined by the Dodd-Frank Act and applicable regulations; and the forced use of clearinghouse mechanisms for many OTC derivative transactions. Additionally, the new law requires the aggregation, for purposes of position limits, of all positions in futures held by a single entity and its affiliates, whether such positions exist on U.S. futures exchanges, non-U.S. futures exchanges, or in OTC contracts.

The CFTC, SEC and other federal regulators have been tasked with developing the rules and regulations enacting the provisions of the Dodd-Frank Act. It is not possible at this time to gauge the exact nature and scope of the impact of the Dodd-Frank Act on any of the Funds. The new law and the rules to be promulgated may negatively impact a Fund’s ability to meet its investment objective either through limits or requirements imposed on it or upon its counterparties. In particular, new position limits imposed on a Fund or its counterparties may impact that Fund’s ability to invest in a manner that efficiently meets its investment objective, and new requirements, including capital and mandatory clearing, may increase the cost of a Fund’s investments and cost of doing business, which could adversely affect investors.

This Prospectus and the documents incorporated by reference contain forward-looking statements that are subject to risks and uncertainties. Investors can identify these forward-looking statements by the use of expressions such as “may,” “will,” “expect,” “anticipate,” “believe,” “intend,” “plan,” “project,” “should,” “estimate” or any negative or other variations on such expression. These forward-looking statements are based on information currently available to the Sponsor and are subject to a number of risks, uncertainties and other factors, both known, such as those listed in “Risk Factors” in this Summary, described in “Risk Factors” and elsewhere in this Prospectus and the documents incorporated by reference in this Prospectus, and unknown, that could cause the actual results, performance, prospects or opportunities of the Funds to differ materially from those expressed in, or implied by, these forward-looking statements.

Except as expressly required by federal securities laws, the Trust assumes no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. Investors should not place undue reliance on any forward-looking statements.

ProShares Ultra DJ-UBS Commodity and ProShares UltraShort DJ-UBS Commodity are designed to track a multiple or an inverse multiple of the daily performance of the Dow Jones—UBS Commodity Index^SM. The Dow Jones—UBS Commodity Index^SM(the “Dow Jones—UBS”) is designed to be a highly liquid and diversified benchmark for the commodity futures market. It is intended to reflect the overall commodity sector by measuring the performance of commodity futures contracts. The performance of the commodity futures market is often very different than the performance of the physical, or “spot”, commodities market. Unlike equities, which entitle the holder to a continuing stake in a corporation, commodity futures contracts specify a delivery date for the underlying physical commodity or its cash equivalent. The Dow Jones—UBS is a “rolling index,” which means that the Dow Jones—UBS does not take actual physical possession of any commodities; rather, it tracks a rolling futures position. An investor with a rolling futures position is able to avoid delivering (or taking delivery of) underlying physical commodities while maintaining exposure to those commodities. The roll for each Index component occurs over a period of five Dow Jones—UBS business days in certain months according to a pre-determined schedule. The exact roll methodology differs between certain commodities. The Index will reflect the performance of its underlying commodities, including roll costs, without regard to income earned on cash positions.

The Dow Jones—UBS is comprised of eight different commodity sectors: petroleum, natural gas, livestock, grains, industrial metals, precious metals, softs and vegetable oils. These eight sectors track futures contracts prices of 19 specific commodities such as natural gas, crude oil, unleaded gasoline, heating oil, live cattle, lean hogs, wheat, corn, soybeans, soybean oil, aluminum, copper, zinc, nickel, gold, silver, sugar, cotton and coffee. The Dow Jones—UBS is designed to minimize concentration in any one commodity or sector. No single commodity may constitute less than 2% or more than 15% of the index. No related group of commodities (e.g., energy, precious metals, livestock or grains) may constitute more than 33% of the index as of the annual reweighting of the components. The Dow Jones—UBS family of indices also includes eight subindexes that group commodities based on type, as well as single commodity subindexes representing each of the 19 commodities that are currently tracked by the Dow Jones—UBS. As discussed below, the Natural Gas Funds are designed to track one of these subindexes, the Dow Jones-UBS Natural Gas Subindex^SM.

To determine its component weightings, the Dow Jones—UBS relies primarily on liquidity data, or the relative amount of trading activity of a particular commodity. Liquidity is an important indicator of the value placed on a commodity by financial and physical market participants. The index also relies to a lesser extent on dollar-adjusted production data. The index thus relies on data that is endogenous to the futures markets (liquidity) and exogenous to the futures markets (production) in determining relative weightings. All data used in both the liquidity and production calculations is averaged over a five-year period.

In consultation with the DJ—UBS Commodity Index Advisory Committee, the DJ—UBS Commodity Index Supervisory Committee meets annually to determine the composition of the index in accordance with the rules established in the DJ—UBSCI Handbook. The Supervisory Committee consists of employees of UBS Securities LLC and Dow Jones & Company, Inc. (“Dow Jones”). DJ—UBS Commodity Index Advisory Committee members are drawn from the academic, financial and legal communities. The Index is re-weighted and rebalanced each year in January on a price-percentage basis. The annual weightings for the Index are determined each year in June or July by UBS Securities LLC and Dow Jones under the supervision of the Dow Jones—UBS Commodity Index Oversight Committee, announced after approval by the Committee and implemented the following January.

The Dow Jones—UBS is composed of commodities traded on U.S. exchanges, with the exception of aluminum, nickel and zinc, which trade on the London Metal Exchange. Trading hours for the U.S. commodity exchanges are between 8:00 a.m. and 3:00 p.m. (Eastern Time). The Dow Jones—UBS contract trades exclusively on the Chicago Board of Trade’s (“CBOT”) electronic trading platform. The new Dow Jones—UBS futures contract will trade exclusively on the CBOT’s premier electronic trading platform, e-cbot^®, from 8:15 a.m. – 1:30 p.m. Central Time, Monday through Friday. A daily settlement price for the index is published at approximately 5:00 p.m. (Eastern Time).

The Dow Jones—UBS is a proprietary index that UBS Securities LLC (successor to AIG Financial Products Corp.) developed and that Dow Jones, in conjunction with UBS Securities LLC, calculates. The methodology for determining the composition and weighting of the Index and for calculating its level is subject to modification by the Sponsors any time. Dow Jones disseminates the Index level at least every 15 seconds from 8:00 a.m. to 3:00 p.m. (Eastern Time), and publishes a daily Index level at approximately 5:00 p.m. (Eastern Time) each business day.

ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas are designed to track twice (2x) or twice the inverse (-2x) of the daily performance of the Dow Jones—UBS Natural Gas Subindex^SM, respectively The Dow Jones—UBS Natural Gas Subindex^SM is intended to reflect the performance of a rolling position in natural gas futures contracts traded on the NYMEX without regard to income earned on cash positions. An investment in natural gas futures contracts may often perform very differently than the price of physical natural gas (e.g., the wellhead or end-user price of natural gas).

The Index tracks what is known as a rolling futures position, which is described above under “Dow Jones—UBS Commodity Index.^SM” The roll for each Index component occurs over a period of five Dow Jones—UBS business days in certain months according to a pre-determined schedule. The exact roll methodology differs between certain commodities. The Index will reflect the performance of its underlying commodities, including roll costs, without regard to income earned on cash positions.

The Dow Jones-UBS Commodity Indexes^SM (the “DJ-UBSCI^SM”) are a joint product of Dow Jones Indexes, a licensed trademark of CME Group Index Services LLC (“CME Indexes”), and UBS Securities LLC (“UBS Securities”), and have been licensed for use. “Dow Jones^®”, “DJ”, “Dow Jones Indexes”, “UBS”, “Dow Jones—UBS Natural Gas Subindex^S^M”, and “DJ-UBS^SM” are service marks of Dow Jones Trademark Holdings, LLC and UBS AG (“UBS AG”), as the case may be, have been licensed to CME Indexes and have been licensed for use for certain purposes by the Trust (“Licensee”).

The Funds are not sponsored, endorsed, sold or promoted by Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates makes any representation or warranty, express or implied, to the owners of or counterparts to the Funds or any member of the public regarding the advisability of investing in securities or commodities generally or in the Funds particularly. The only relationship of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates to the Licensee is the licensing of certain trademarks, trade names and service marks and of the DJ-UBSCI^SM, which is determined, composed and calculated by CME Indexes in conjunction with UBS Securities without regard to the Licensee or the Funds. Dow Jones, UBS Securities and CME Indexes have no obligation to take the needs of the Licensee or the shareholders of the Funds into consideration in determining, composing or calculating DJ-UBSCI^SM. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their respective subsidiaries or affiliates is responsible for or has participated in the determination of the timing of, prices at, or quantities of the Shares to be issued or in the determination or calculation of the equation by which the Shares are to be converted into cash. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates shall have any obligation or liability, including, without limitation, to Fund shareholders, in connection with the administration, marketing or trading of the Funds. Notwithstanding the foregoing, UBS AG, UBS Securities, CME Group Inc. and their respective subsidiaries and affiliates may independently issue and/or sponsor financial products unrelated to the Shares currently being issued by the Licensee, but which may be similar to and competitive with the Funds. In addition, UBS AG, UBS Securities, CME Group Inc. and their subsidiaries and affiliates actively trade commodities, commodity indexes and commodity futures (including the DJ-UBSCI^SM and Dow Jones-UBS Commodity Index Total Return^SM), as well as swaps, options and derivatives which are linked to the performance of such commodities, commodity indexes and commodity futures. It is possible that this trading activity will affect the value of the DJ-UBSCI^SM and Fund Shares.

This Prospectus relates only to Funds and does not relate to the exchange-traded physical commodities underlying any of the DJ-UBSCI^SM components. Purchasers of the Shares should not conclude that the inclusion of a futures contract in the DJ-UBSCI^SM is any form of investment recommendation of the futures contract or the underlying exchange-traded physical commodity by Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates. The information in this Prospectus regarding the DJ-UBSCI^SM components has been derived solely from publicly available documents. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates has made any due diligence inquiries with respect to the DJ-UBSCI^SM components in connection with the Funds. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates makes any representation that these publicly available documents or any other publicly available information regarding the DJ-UBSCI^SM components, including without limitation a description of factors that affect the prices of such components, are accurate or complete.

NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES GUARANTEES THE ACCURACY AND/OR THE COMPLETENESS OF THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO AND NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES SHALL HAVE ANY LIABILITY FOR ANY ERRORS, OMISSIONS OR INTERRUPTIONS THEREIN. NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES MAKES ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE LICENSEE, FUND SHAREHOLDERS OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO. NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES MAKES ANY EXPRESS OR IMPLIED WARRANTIES AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES HAVE ANY LIABILITY FOR ANY LOST PROFITS OR INDIRECT, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSSES, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF. THERE ARE NO THIRD PARTY BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS AMONG UBS SECURITIES, CME INDEXES AND THE LICENSEE, OTHER THAN UBS AG AND THE LICENSORS OF CME INDEXES.

ProShares Short Gold is designed to track the inverse of the daily performance of gold bullion as measured by the U.S. dollar p.m. fixing price for delivery in London, which serves as the Fund’s benchmark. The Fund does not directly or physically hold the underlying gold to pursue its investment objective, but instead, seeks exposure to gold through the use of Financial Instruments (primarily exchange-traded futures contracts and OTC forward contracts) whose value is based on the underlying price of gold.

The price of gold is the U.S. dollar price of gold bullion as measured by the London afternoon fixing price per troy ounce of unallocated gold bullion for delivery in London through a member of the London Bullion Market Association (the “LBMA”), authorized to effect such delivery. The gold market is a global marketplace consisting of both OTC transactions and exchange-traded products. The OTC market generally consists of transactions in spot, forwards, options and other derivatives, while exchange-traded transactions consist of futures and options.

A London gold “fix” is conducted each trading day at 3:00 p.m. London time providing a reference gold price for that day’s trading. Many long-term contracts are priced on the basis of the London gold fix and market participants will usually refer to the London gold fix when looking for a basis for valuation.

ProShares Ultra Euro and ProShares Ultra Yen are designed to track a multiple of the daily performance of the spot price of the applicable currency versus the U.S. dollar. The spot price of each currency is measured by the 4:00 p.m. (Eastern Time) spot prices as provided by Reuters, expressed in terms of U.S. dollars per unit of foreign currency. The Currency Funds do not necessarily directly or physically hold the underlying currency or currencies and will instead seek exposure through the use of certain Financial Instruments whose value is based on the price of the underlying currency or currencies to pursue its investment objective.

ProShares Ultra Euro is designed to track a multiple of the daily performance of the Euro spot price versus the U.S. dollar. This Fund uses the 4:00 p.m. (Eastern Time) Euro/U.S. dollar exchange rate as provided by Reuters, expressed in terms of U.S. dollars per unit of foreign currency, as the basis for the underlying benchmark.

In 1998, the European Central Bank in Frankfurt was organized by Austria, Belgium, Finland, France, Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal and Spain in order to establish a common currency—the Euro. Unlike the U.S. Federal Reserve System, the Bank of Japan and other comparable central banks, the European Central Bank is a central authority that conducts monetary policy for an economic area consisting of many otherwise largely autonomous states.

At its inception on January 1, 1999, the Euro was launched as an electronic currency used by banks, foreign exchange dealers and stock markets. In 2002, the Euro became cash currency for approximately 300 million citizens of 12 European countries (the eleven countries mentioned above, in addition to Greece). Today, twenty-three countries use the Euro, including Andorra, Cyprus, Finland, Kosovo, Malta, Monaco, Montenegro, San Marino, Slovakia, Slovenia and the Vatican City.

Although the European countries that have adopted the Euro are members of the European Union, the United Kingdom, Denmark and Sweden are European Union members that have not adopted the Euro as their national currency.

ProShares Ultra Yen is designed to track a multiple of the daily performance of the Japanese yen spot price versus the U.S. dollar. This Fund uses the 4:00 p.m. (Eastern Time) Japanese yen/U.S. dollar exchange rate as provided by Reuters, expressed in terms of U.S. dollars per unit of foreign currency, as the basis for the underlying benchmark.

The Japanese yen has been the official currency of Japan since 1871. The Bank of Japan has been operating as the central bank of Japan since 1882.

Each Fund seeks, on a daily basis, to provide investment results (before fees and expenses) that correspond to twice (2x) the performance of, the inverse (-1x) of the performance of, or twice the inverse (-2x) of the performance of a benchmark. The Funds do not seek to achieve their stated objective over a period greater than one day. Because the Funds seek investment results for a single day only (from the time a Fund calculates its NAV to the time of the Fund’s next NAV calculation) and on a leveraged and/or inverse basis, each Fund is different from most exchange-traded funds.

The “Ultra” Funds seek daily results that match twice (2x) the daily performance of a benchmark (before fees and expenses). The Ultra Funds do not seek to achieve their stated objective over a period greater than one day. If an Ultra Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately twice as much on a percentage basis as the level of its corresponding benchmark when the benchmark rises. Conversely, its value on a given day (before fees and expenses) should lose approximately twice as much on a percentage basis as the level of its corresponding benchmark when the benchmark declines. Each Ultra Fund acquires long exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable Ultra Fund’s benchmark, such that each Ultra Fund has exposure intended to approximate twice (2x) its corresponding benchmark at the time of its NAV calculation.

The “Short” Funds seek daily results that match the inverse (-1x) of the daily performance of a benchmark (before fees and expenses). The Short Funds do not seek to achieve their stated objectives over a period greater than one day. If a Short Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately as much on a percentage basis as the level of its corresponding benchmark when the benchmark declines. Conversely, its value on a given day (before fees and expenses) should lose approximately as much on a percentage basis as the level of its corresponding benchmark when the benchmark rises. Each Short Fund acquires exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable Short Fund’s benchmark, such that each Short Fund has exposure intended to approximate the inverse (1x) of its corresponding benchmark at the time of its NAV calculation.

The “UltraShort” Funds seek daily results that match twice the inverse (-2x) of the daily performance of a benchmark (before fees and expenses). The UltraShort Funds do not seek to achieve their stated objectives over a period greater than one day. If an UltraShort Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately twice as much on a percentage basis as the level of its corresponding benchmark when the benchmark declines. Conversely, its value on a given day (before fees and expenses) should lose approximately twice as much on a percentage basis as the level of its corresponding benchmark when the benchmark rises. Each UltraShort Fund acquires exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable UltraShort Fund’s benchmark, such that each UltraShort Fund has exposure intended to approximate twice the inverse (-2x) of its corresponding benchmark at the time of its NAV calculation.

There can be no assurance that any Fund will achieve its investment objective or avoid substantial losses. The Funds do not seek to achieve their stated investment objective over a period of time greater than one day because mathematical compounding prevents these Funds from achieving such results. Results for these Funds over periods of time greater than one day should not be expected to be a simple inverse (-1x), multiple (2x) or inverse multiple (-2x) of the period return of the corresponding benchmark and will likely differ significantly from such. A Fund will lose money if its benchmark’s performance is flat over time, and it is possible for a Fund to lose money over time even if its benchmark’s performance increases (or decreases in the case of a Short Fund or an UltraShort Fund), as a result of daily rebalancing, the benchmark’s volatility and compounding. Daily compounding of a Fund’s investment returns can dramatically and adversely affect its longer-term performance during periods of high volatility. Volatility may be at least as important to a Fund’s return for a period as the return of the Fund’s underlying benchmark.

ProShares Ultra DJ-UBS Commodity and ProShares UltraShort DJ-UBS Commodity: the Dow Jones—UBS Commodity Index^SM. The Dow Jones—UBS Commodity Index is designed to track commodity futures prices.

ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas: the Dow Jones—UBS Natural Gas Subindex^SM (the “Natural Gas Index”). The Natural Gas Index is designed to track the price of natural gas futures contracts traded on the NYMEX.

ProShares Short Gold: the daily performance of gold bullion as measured by the U.S. dollar p.m. fixing price for delivery in London.

ProShares Ultra Euro: the 4:00 p.m. (Eastern Time) spot price of the Euro versus the U.S. dollar using Euro/U.S. dollar exchange rate, expressed in terms of U.S. dollars per unit of foreign currency.

ProShares Ultra Yen: the 4:00 p.m. (Eastern Time) spot price of the Japanese yen versus the U.S. dollar using the Japanese yen/U.S. dollar exchange rate, expressed in terms of U.S. dollars per unit of foreign currency.

In seeking to achieve the Funds’ investment objectives, the Sponsor uses a mathematical approach to investing. Using this approach, the Sponsor determines the type, quantity and mix of investment positions that the Sponsor believes, in combination, should produce daily returns consistent with the Funds’ objectives. The Sponsor relies upon a pre-determined model to generate orders that result in repositioning the Funds’ investments in accordance with their respective investment objective.

Each Fund, with the exception of the Natural Gas Funds, invests, or will invest, principally in any one of or combinations of Financial Instruments, including swap agreements, futures contracts and options on futures contracts or forward contracts with respect to the applicable Fund’s benchmark to the extent determined appropriate by the Sponsor. The types of commodity or currency interests in which the relevant Commodity Funds, Commodity Index Funds or Currency Funds invest may vary daily. The Funds do not currently intend to invest directly in any commodity or currency. The Funds will also hold cash or cash equivalents such as U.S. Treasury securities or other high credit quality, short-term fixed-income or similar securities (such as shares of money market funds, bank deposits, bank money market accounts, certain variable-rate demand notes and collateralized repurchase agreements) for direct investment or as collateral for Financial Instruments.

The Natural Gas Funds intend to obtain exposure to the Natural Gas Index by taking long or short positions in natural gas futures contracts. In the event position accountability rules or position limits are reached with respect to natural gas futures contracts, the Sponsor may, in its commercially reasonable judgment, cause the Natural Gas Funds to obtain exposure to the Natural Gas Index through swaps referencing the Natural Gas Index or particular natural gas futures contracts comprising the Natural Gas Index, or invest in other futures contracts or swaps not based on the particular natural gas futures contracts comprising the Natural Gas Index if such instruments tend to exhibit trading prices or returns that correlate with the Natural Gas Index or any natural gas futures contract and will further the investment objective of the applicable Natural Gas Fund. The Natural Gas Funds may also invest in swaps if the market for a specific futures contract experiences emergencies (e.g., natural disaster, terrorist attack or an act of God) or disruptions (e.g., a trading halt or a flash crash) that prevent the Natural Gas Fund from obtaining the appropriate amount of investment exposure to the affected natural gas futures contracts directly or other futures contracts. The Natural Gas Funds will also hold cash or cash equivalents such as U.S. Treasury securities or other high credit quality, short-term fixed-income or similar securities (such as shares of money market funds, bank deposits, bank money market accounts, certain variable rate-demand notes and collateralized repurchase agreements) for direct investment or as collateral for Financial Instruments.

The Sponsor does not invest the assets of the Funds based on its view of the investment merit of a particular investment, other than for cash management purposes, nor does it conduct conventional commodity or currency research or analysis, or forecast market movement or trends, in managing the assets of the Funds. The Funds seek to remain fully exposed at all times to the Funds’ underlying benchmarks without regard to market conditions, trends or direction.

For the Commodity Index Funds, a Fund may hold through Financial Instruments a representative sample of the components in the underlying index, which have aggregate characteristics similar to those of the underlying index. This “sampling” process typically involves selecting a representative sample of components in an index principally to enhance liquidity and reduce transaction costs while seeking to maintain high correlation with, and similar aggregate characteristics (e.g., underlying commodities and valuations) to, the underlying index. In addition, a Commodity Index Fund may obtain exposure to components not included in the underlying index, invest in assets that are not included in the underlying index or may overweigh or underweigh certain components contained in the underlying index.

As of the NAV calculation time each trading day, each Fund will seek to position its portfolio so that its exposure to its benchmark is consistent with its investment objective. The impact of a benchmark’s movements during the day will affect whether the Fund’s portfolio needs to be repositioned. For example, if the benchmark for an Ultra Fund has risen on a given day, net assets of the Ultra Fund should rise, meaning the Ultra Fund’s long exposure will need to be increased. Conversely, if the benchmark has fallen on a given day, net assets of the Ultra Fund should fall, meaning the Ultra Fund’s long exposure will need to be decreased. Net assets of the Short and UltraShort Funds will generally decrease when their corresponding benchmarks rise, meaning such Funds’ inverse exposure will need to be decreased. Conversely, if the benchmark has fallen on a given day, net assets of the Short and UltraShort Funds should rise, meaning such Funds’ inverse exposure will need to be increased.

Swap agreements are two-party contracts entered into primarily by global financial institutions for a specified period ranging from a day to more than a year. In a standard swap transaction, the parties agree to exchange the returns on a particular predetermined investment, instrument or index for a fixed or floating rate of return (the “interest rate leg,” which will also include the cost of borrowing for short swaps) in respect of a predetermined notional amount. In the case of futures contracts based indices, such as those used by the Commodity Index Funds, the reference interest rate is zero, although a financing spread or fee is normally still applied. Transaction or commission costs are reflected in the benchmark level at which the transaction is entered into. The gross returns to be exchanged are calculated with respect to a notional amount and the benchmark returns to which the swap is linked. Swaps are usually closed out on a net basis, i.e., the two payment streams are netted out in a cash settlement on the payment date specified in the agreement, with the parties receiving or paying, as the case may be, only the net amount of the two payments.

Swap agreements involve, to varying degrees, elements of market risk and exposure to loss in excess of the amount which would be reflected on the Statement of Assets and Liabilities. The notional amounts of the agreement reflect the extent of each Ultra Fund’s total investment exposure under the swap agreement. Each of the Short Fund’s and UltraShort Fund’s exposure is not limited by the notional amount and its exposure is in theory potentially infinite as there is no fixed limit on the increase in any benchmark value. The primary risks associated with the use of swap agreements arise from the inability of counterparties to perform. Each Fund that invests in swaps bears the risk of loss of the net amount, if any, expected to be received under a swap agreement in the event of the default or bankruptcy of a swap counterparty. Each such Fund enters or intends to enter into swap agreements only with large, established and well capitalized financial institutions. Each Fund that invests in swaps may use various techniques to minimize credit risk.

Each Fund that invests in swaps generally collateralizes swap agreements with cash and/or certain securities. Such collateral is generally held for the benefit of the counterparty in a segregated tri-party account at the custodian to protect the counterparty against non-payment by the Fund. In the event of a default by the counterparty, and the Fund is owed money in the swap transaction, such Fund will seek withdrawal of this collateral from the segregated account and may incur certain costs exercising its right with respect to the collateral. These Funds remain subject to credit risk with respect to the amount it expects to receive from counterparties.

A forward contract is a contractual obligation to purchase or sell a specified quantity of a particular Reference Asset at or before a specified date in the future at a specified price and, therefore, is economically similar to a futures contract. Unlike futures contracts, however, forward contracts are typically traded in the OTC markets and are not standardized contracts. Forward contracts for a given commodity or currency are generally available for various amounts and maturities and are subject to individual negotiation between the parties involved. Moreover, there is generally no direct means of offsetting or closing out a forward contract by taking an offsetting position as one would a futures contract on a U.S. exchange. If a trader desires to close out a forward contract position, he generally will establish an opposite position in the contract but will settle and recognize the profit or loss on both positions simultaneously on the delivery date. Thus, unlike in the futures contract market where a trader who has offset positions will recognize profit or loss immediately, in the forward market a trader with a position that has been offset at a profit will generally not receive such profit until the delivery date, and likewise a trader with a position that has been offset at a loss will generally not have to pay money

until the delivery date. In recent years, however, the terms of forward contracts have become more standardized, and in some instances such contracts now provide a right of offset or cash settlement as an alternative to making or taking delivery of the underlying commodity or currency. The primary risks associated with the use of forward agreements arise from the inability of the counterparty to perform.

Each Fund that invests in forward contracts generally collateralizes the forward contracts with cash and/or certain securities. Such collateral is generally held for the benefit of the counterparty in a segregated tri-party account at the custodian to protect the counterparty against non-payment by the Fund. In the event of a default by the counterparty, and the Fund is owed money in the forward transaction, such Fund will seek withdrawal of this collateral from the segregated account and may incur certain costs exercising its right with respect to the collateral. These Funds remain subject to credit risk with respect to the amount it expects to receive from counterparties.

The forward markets provide what has typically been a highly liquid market for foreign exchange trading, and in certain cases the prices quoted for foreign exchange forward contracts may be more favorable than the prices for foreign exchange futures contracts traded on U.S. exchanges. The forward markets are largely unregulated and liquidity in the market cannot be assured. Forward contracts are, in general, not cleared or guaranteed by a third party. Commercial banks participating in trading foreign exchange forward contracts often do not require margin deposits, but rely upon internal credit limitations and their judgments regarding the creditworthiness of their counterparties. In recent years, however, many OTC market participants in foreign exchange trading have begun to require that their counterparties post margin.

A futures contract is a standardized contract traded on, or subject to the rules of, an exchange that calls for the future delivery of a specified quantity and type of a particular Reference Asset at a specified time and place or alternatively may call for cash settlement. Futures contracts are traded on a wide variety of Reference Assets, including bonds, interest rates, agricultural products, stock indexes, currencies, energy, metals, economic indicators and statistical measures. The notional size and calendar term futures contracts on a particular underlying reference are identical and are not subject to any negotiation, other than with respect to price and the number of contracts traded between the buyer and seller. Each Fund generally deposits cash with an FCM for its open positions in futures contracts. Such deposits are generally held for the benefit of the counterparty at the FCM to protect the counterparty against non-payment by the Fund. In the event of a default by the counterparty, and the Fund is owed money in the futures contract, the Fund will seek withdrawal of this deposit from the FCM and may incur certain costs exercising its right with respect to the deposited cash.

Certain futures contracts, including stock index contracts and certain commodity futures contracts settle in cash, reflecting the difference between the contract purchase/sale price and the contract settlement price. The cash settlement mechanism avoids the potential for either side to have to deliver the underlying Reference Asset. For other futures contracts, the contractual obligations of a buyer or seller may generally be satisfied by taking or making physical delivery of the underlying commodity or by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. The difference between the price at which the futures contract is purchased or sold and the price paid for the offsetting sale or purchase, after allowance for brokerage commissions, constitutes the profit or loss to the trader.

Option contracts grant one party a right, for a price, either to buy or sell a Reference Asset at a fixed price during a specified period or on a specified day. A call option gives one the right to buy a Reference Asset at an agreed-upon price on or before a certain date. A put option gives one the right to sell a Reference Asset at an agreed-upon price on or before a certain date.

Money market instruments are short-term debt instruments that have a remaining maturity of 397 days or less and exhibit high quality credit profiles. Money market instruments may include U.S. government securities, securities issued by governments of other developed countries and repurchase agreements.

Futures exchanges provide centralized market facilities for trading futures contracts and options (but not forward contracts) in which multiple persons have the ability to execute or trade contracts by accepting bids and offers from multiple participants. Members of, and trades executed on, a particular exchange are subject to the rules of that exchange. Among the principal exchanges in the United States are the Chicago Board Options Exchange, Incorporated (“CBOE”) (which includes the CFE), the Chicago Mercantile Exchange (“CME”) (which includes, among others, the CBOT and the NYMEX) and the Intercontinental Exchange (“ICE”)).

Each futures exchange in the United States has an associated “clearing house.” Clearing houses provide services designed to transfer credit risk and ensure the integrity of trades. Once trades between members of an exchange have been confirmed or cleared, the clearing house becomes substituted for each buyer and each seller of contracts traded on the exchange and, in effect, becomes the other party to each trader’s open position in the market. Thereafter, each party to a trade looks only to the clearing house for performance. The clearing house generally establishes some sort of security or guarantee fund to which all clearing members of the exchange must contribute. This fund acts as an emergency buffer which is intended to enable the clearing house to meet its obligations with regard to the other side of an insolvent clearing member’s contracts. Furthermore, clearing houses require margin deposits and continuously mark positions to market to provide some assurance that their members will be able to fulfill their contractual obligations. Thus, members effecting futures transactions on an organized exchange do not bear the risk of the insolvency of the party on the opposite side of the trade; their credit risk is limited to the respective solvencies of their commodity broker and the clearing house. The clearing house “guarantee” of performance on open positions does not run to customers. If a member firm goes bankrupt, customers could lose money.

Foreign futures exchanges differ in certain respects from their U.S. counterparts. Non-U.S. futures exchanges are not subject to regulation by the CFTC. In contrast to U.S. exchanges, certain foreign exchanges are “principals’ markets,” where trades remain the liability of the traders involved, and the exchange or an affiliated clearing house, if any, does not become substituted for any party. Therefore, participants in such markets must often satisfy themselves as to the creditworthiness of their counterparty. Additionally, in the event of the insolvency or bankruptcy of a non-U.S. market or broker, the rights of market participants are likely to be more limited than the rights afforded by the U.S. futures exchanges. The Sponsor does not anticipate that the Funds will hold futures traded on foreign exchanges.

Futures exchanges in the United States are subject to regulation under the CEA, by the CFTC, the governmental agency having responsibility for regulation of futures exchanges and trading on those exchanges. (Investors should be aware that no governmental U.S. agency currently regulates the OTC foreign exchange markets.)

The CFTC has exclusive authority to designate exchanges for the trading of specific futures contracts and options on futures contracts and to prescribe rules and regulations of the marketing of each. The CFTC also regulates the activities of “commodity trading advisors” and “commodity pool operators” and the CFTC has adopted regulations with respect to certain of such persons’ activities. Pursuant to its authority, the CFTC requires a commodity pool operator, such as the Sponsor, to keep accurate, current and orderly records with respect to each pool it operates. The CFTC may suspend, modify or terminate the registration of any registrant for failure to comply with CFTC rules or regulations. Suspension, restriction or termination of the Sponsor’s registration as a commodity pool operator would prevent it, until such time (if any) as such registration were to be reinstated, from managing, and might result in the termination of, the Funds. The CEA gives the CFTC similar authority with respect to the activities of commodity trading advisors, such as the Sponsor, and requires commodity trading advisors to maintain current and accurate records within the United States. If the registration of a Sponsor as a commodity trading advisor were to be terminated, restricted or suspended, the Sponsor would be unable, until such time (if any) as such registration were to be reinstated, to render trading advice to the Funds. The Funds themselves are not registered with the CFTC in any capacity. Therefore, if the Sponsor were unable to provide services and/or trading advice to the Funds, the Funds would be unable to pursue their investment objectives unless and until the Sponsor’s ability to provide services and trading advice to the Funds was reinstated or a replacement for the Sponsor as commodity pool operator and/or commodity trading advisor could be found. Such an event could result in termination of the Funds.

The CEA requires all FCMs to meet and maintain specified fitness and financial requirements, segregate customer funds from proprietary funds and account separately for all customers’ funds and positions, and to maintain specified books and records open to inspection by the staff of the CFTC. See “Risk Factors—Risks—Failure of the FCMs to segregate assets may increase losses in the Funds.”

The CEA also gives the states certain powers to enforce its provisions and the regulations of the CFTC.

Under certain circumstances, the CEA grants shareholders the right to institute a reparations proceeding before the CFTC against the Sponsor (as a registered commodity pool operator and commodity trading advisor), an FCM, as well as those of their respective employees who are required to be registered under the CEA. Shareholders may also be able to maintain a private right of action for certain violations of the CEA.

Pursuant to authority in the CEA, the NFA has been formed and registered with the CFTC as a registered futures association. At the present time, the NFA is the only self-regulatory organization for commodities professionals other than exchanges. As such, the NFA promulgates rules governing the conduct of commodity professionals and disciplines those professionals that do not comply with such standards. The CFTC has delegated to the NFA responsibility for the registration of commodity trading advisors, commodity pool operators, FCMs, introducing brokers and their respective associated persons and floor brokers. The Sponsor is a member of the NFA (the Funds themselves are not required to become members of the NFA). As an NFA member, the Sponsor is subject to NFA standards relating to fair trade practices, financial condition, and consumer protection. The CFTC is prohibited by statute from regulating trading on foreign commodity exchanges and markets.

The CEA and CFTC regulations prohibit market abuse and generally require that all futures exchange-based trading be conducted in compliance with rules designed to ensure the integrity of market prices and without any intent to manipulate prices. CFTC regulations and futures exchange rules also impose limits on the size of the positions that a person may hold or control as well as standards for aggregating certain positions. The rules of the CFTC and the futures exchanges also authorize special emergency actions to halt, suspend or limit trading overall or to restrict, halt, suspend or limit the trading of an individual trader or to otherwise impose special reporting or margin requirements.

Most U.S. futures exchanges (but generally not foreign exchanges or banks or dealers in the cases of forward contracts, swap agreements and options on forward contracts) limit the amount of fluctuation in some futures contract or options on futures contract prices during a single day by regulations. These regulations specify what are referred to as “daily price fluctuation limits” or more commonly “daily limits.” Once the daily limit has been reached in a particular futures contract, no trades may be made at a price beyond that limit. As of the date of this Prospectus, the maximum daily price fluctuation limit for natural gas futures contracts is $3.00 per mmBtu ($30,000 per contract) for all months. One mmBtu is equivalent to 10,000 million British thermal units. Once the daily price fluctuation limit is reached, the limit is reset after a five minute trading halt. As of the date of this Prospectus, the maximum daily price fluctuation limit for crude oil futures contracts is $10 per barrel ($10,000 per contract) for all months. Once the daily price fluctuation limit is reached, the limit is reset after a five minute trading halt.

The following futures contracts held in the DJ-UBS Broad Commodity Index have the following price limits:

As of the date of this Prospectus, the maximum daily price fluctuation limit for CBOT Corn futures contracts is $0.30 per bushel expandable to $0.45 and then to $0.70 when the market closes at limit bid or limit offer. There shall be no price limits on the current month.

As of the date of this Prospectus, the maximum daily price fluctuation limit for ICE Cotton No. 2^® futures contracts is subject to a daily price limit that can range from 3 to 7 cents per pound, with details set forth in ICE Futures U.S.^®, Inc. Cotton No. 2 Rule 10.09.

As of the date of this Prospectus, the maximum daily price fluctuation limit for CME Live Cattle futures contracts is $.03 per pound above or below the previous day’s settlement price.

As of the date of this Prospectus, the maximum daily price fluctuation limit for CME Lean Hogs futures contracts is $.03 per pound above or below previous day’s settlement price; none for expiring contract in last two trading days.

As of the date of this Prospectus, the maximum daily price fluctuation limit for CBOT Soybeans futures contracts is $0.70 per bushel expandable to $1.05 and then to $1.60 when the market closes at limit bid or limit offer. There shall be no price limits on the current month contract on or after the second business day preceding the first day of the delivery month.

As of the date of this Prospectus, the maximum daily price fluctuation limit for CBOT Soybean Oil futures contracts is 2.5 cents per pound expandable to 3.5 cents per pound and then to 5.5 cents per pound when the market closes at limit bid or limit offer. There shall be no price limits on the current month contract on or after the second business day preceding the first day of the delivery month.

As of the date of this Prospectus, the maximum daily price fluctuation limit for CBOT Wheat futures contracts is $0.60 per bushel expandable to $0.90 and then to $1.35 when the market closes at limit bid or limit offer. There shall be no price limits on the current month contract on or after the second business day preceding the first day of the delivery month.

“Initial” or “original” margin is the minimum amount of funds that a futures trader must deposit with his commodity broker in order to initiate futures contract trading. Maintenance margin is the amount (generally less than initial margin) to which a trader’s account may decline before he must deliver additional margin so as to maintain open positions. A margin deposit is like a cash

performance bond. It helps assure the futures trader’s performance of the futures contracts he purchases or sells. The minimum amount of margin required in connection with a particular futures contract is set by the exchange on which such contract is traded and is subject to change at any time during the term of the contract. Futures contracts are customarily bought and sold on margins that represent a very small percentage (ranging upward from less than 2%) of the aggregate purchase or sales price of the contract. Because of such low margins, price fluctuations occurring in the futures markets may create profits and losses that are greater, in relation to the amount invested, than are customary in other forms of investments.

Brokerage firms carrying accounts for traders in futures contracts may not accept lower, and may require higher, amounts of margin as a matter of policy in order to afford further protection for themselves.

Margin requirements are computed each day by a commodity broker. At the close of each trading day, each open futures contract is marked to market, that is, the gain or loss on the position is calculated from the prior day’s close. When the market value of a particular open futures contract position changes to a point where the margin on deposit does not satisfy maintenance margin requirements, a margin call is made by the commodity broker. If the margin call is not met within a reasonable time, the broker may close out the trader’s position.

The following performance information is presented in accordance with CFTC regulations. No performance information is presented with respect to the Natural Gas Funds and the Short Gold Fund, which have not traded prior to the date of this Prospectus and which will not begin trading until after the initial Creation Units of the Natural Gas Funds and the Short Gold Fund are purchased by the initial Authorized Participant for such Funds (all as described in the “Plan of Distribution” section in Part Two of this Prospectus). The performance of the Natural Gas Funds and the Short Gold Fund will differ materially in certain respects from the performance of the Funds which are included herein and the performance of other series of the Trust (the “Other Funds”) which are included in the section entitled “Performance of Other Pools Operated by the Commodity Pool Operator” in Part Two of this Prospectus.

The performance of the Funds which are summarized herein are materially different in certain respects from the Natural Gas Funds and the Short Gold Fund and the past performance summaries of the Funds below are generally not representative of how the Natural Gas Funds and the Short Gold Fund might perform in the future.

All summary performance information is as of July 31, 2011. Performance information is set forth, in accordance with CFTC regulations, since each fund’s inception of trading.

The following performance information is presented in accordance with CFTC regulations.

All summary performance information is as of July 31, 2011. Performance information is set forth, in accordance with CFTC regulations, since each fund’s inception of trading.

The following performance information is presented in accordance with CFTC regulations.

All summary performance information is as of July 31, 2011. Performance information is set forth, in accordance with CFTC regulations, since each fund’s inception of trading.

The following performance information is presented in accordance with CFTC regulations.

All summary performance information is as of July 31, 2011. Performance information is set forth, in accordance with CFTC regulations, since each fund’s inception of trading.

Investors should consider Management’s Discussion and Analysis of Financial Condition and Results of Operations with respect to the Funds (other than the Natural Gas Funds and the Short Gold Fund), which section is incorporated by reference to our Annual Report on Form 10-K for the year ended December 31, 2010 and Quarterly Reports on Form 10-Q for the periods ended March 31, 2011 and June 30, 2011.

The Natural Gas Funds and Short Gold Fund are newly formed and have no operating history.

Prior to the date of this Prospectus, the Natural Gas Funds and the Short Gold Fund have not begun trading activities. For such Funds, a significant portion of the NAV of such Fund will be held in cash and/or U.S. Treasury securities, agency securities, or other high credit quality, short-term fixed-income or similar securities (such as shares of money market funds, bank deposits, bank money market accounts, certain variable rate-demand notes and collateralized repurchase agreements). These securities may be used for direct investment or serve as collateral for such Fund’s trading in Financial Instruments, as applicable.

The Financial Instruments held by a Natural Gas Fund or the Short Gold Fund may be subject to periods of illiquidity because of market conditions, regulatory considerations and other reasons. For example, swaps and forward contracts are not traded on an exchange, do not have uniform terms and conditions, and in general are not transferable without the consent of the counterparty. In the case of futures contracts, exchanges may limit fluctuations in certain futures contract prices during a single day by regulations referred to as “daily limits.” During a single day, no futures trades may be executed at prices beyond the daily limit. Once the price of a futures contract has increased or decreased by an amount equal to the daily limit, positions in such futures contracts can neither be taken nor liquidated unless the traders are willing to effect trades at or within the limit. Futures contract prices have occasionally moved the daily limit for several consecutive days with little or no trading. Such market conditions could prevent a Natural Gas Fund or the Short Gold Fund from promptly liquidating its futures positions.

With respect to the Natural Gas Fund and Short Gold Fund, entry into swap agreements or forward contracts may further impact liquidity because these contractual agreements are executed “off-exchange” between private parties, do not have uniform terms and conditions, and generally are not transferrable without the consent of the counterparty. Therefore, the time required to offset or “unwind” these positions may be greater than that for exchange-traded instruments.

As of the date of this Prospectus, the Trust is unaware of any other trends, demands, conditions or events that are reasonably likely to result in material changes to the Trust’s liquidity needs.

Because the Natural Gas Funds and the Short Gold Fund may enter into swaps or trade futures or forward contracts, their capital will be at risk due to changes in the value of these contracts (market risk) or the inability of counterparties to perform under the terms of the contracts (credit risk).

During the time period from January 1, 2011 to September , 2011, the Natural Gas Funds and the Short Gold Fund had not yet commenced investment activities nor issued Shares, other than those issued to the Sponsor. These Funds did not purchase or own Financial Instruments during this period. There were no receipts or disbursements of cash to or from these Funds during this period. The Natural Gas Funds and the Short Gold Fund did not receive any revenue, capital gains (losses), or incur any expenses, during this time period.

As of the date of this Prospectus, the Natural Gas Funds and the Short Gold Fund have not used, nor do they expect to use in the future, special purpose entities to facilitate off-balance sheet financing arrangements and have no loan guarantee arrangements or off-balance sheet arrangements of any kind other than agreements entered into in the normal course of business, which may include indemnification provisions related to certain risks service providers undertake in performing services which are in the best interests of these Funds. While these Funds’ exposure under such indemnification provisions cannot be estimated, these general business indemnifications are not expected to have a material impact on their financial position.

Management fee payments made to the Sponsor will be calculated as a fixed percentage of the NAV of each Natural Gas Fund and the Short Gold Fund, less offering costs for the first year. As such, the Sponsor cannot anticipate the amount of payments that will be required under these arrangements for future periods as NAVs are not known until a future date. The agreement with the Sponsor may be terminated by either party upon 30 days written notice to the other party. One officer of the Trust also serves as an officer and owner of the Sponsor.

Each Natural Gas Fund and the Short Gold Fund’s exposure to market risk will be influenced by a number of factors including the liquidity of the markets in which the Financial Instruments it holds are traded and the relationships among the Financial Instruments held. The inherent uncertainty of the trading of these Funds as well as the development of drastic market occurrences could ultimately lead to a loss of all or substantially all of investors’ capital.

When the Natural Gas Funds and the Short Gold Fund enter into Financial Instruments, they will be exposed to credit risk that the counterparty to the contract will not meet its obligations.

The counterparty for futures contracts traded on U.S. and most foreign futures exchanges is the clearing house associated with the particular exchange. In general, clearing houses are backed by their corporate members who may be required to share in the financial burden resulting from the nonperformance by one of their members and, as such, should significantly reduce this credit risk. In cases where the clearing house is not backed by the clearing members (i.e., some foreign exchanges, which may become applicable in the future), it may be backed by a consortium of banks or other financial institutions.

It is expected that swap and forward agreements will be contracted for directly with counterparties. There can be no assurance that any counterparty, clearing member or clearing house will meet its obligations to any Fund.

Swap agreements do not generally involve the delivery of underlying assets either at the outset of a transaction or upon settlement. Accordingly, if the counterparty to a swap agreement defaults, a Natural Gas Fund or the Short Gold Fund’s risk of loss consists of the net amount of payments that each of these Funds is contractually entitled to receive, if any. Swap counterparty risk will generally be limited to the amount of any unrealized gains, although in the event of a counterparty bankruptcy, there could be delays and costs associated with recovery collateral posted in segregated tri-party accounts at the respective Fund’s custodian bank.

Forward contracts do not involve the delivery of assets at the onset of a transaction, but may be settled physically in the underlying asset if such contracts are held to expiration, particularly in the case of currency forwards. Thus, prior to settlement, if the counterparty to a forward contract defaults, a Natural Gas Fund or the Short Gold Fund’s risk of loss consists of the net amount of payments that such Fund is contractually entitled to receive, if any. However, if physically settled forwards are held until expiration (presently, there is no plan to do this), at the time of settlement, these Funds may be at risk for the full notional value of the forward contracts depending on the type of settlement procedures used.

The FCMs for the Natural Gas Funds and the Short Gold Funds, in accepting orders for the purchase or sale of domestic futures contracts, will be required by CFTC regulations to separately account for and segregate as belonging to each Fund, all assets of each Fund relating to domestic futures trading, and the FCMs will not be allowed to commingle such assets with other assets of the FCMs. In addition, CFTC regulations will also require the FCMs to hold in a secure account assets of each Fund related to foreign futures trading.

The Sponsor attempts to minimize certain of these market and credit risks by normally:

The Natural Gas Funds and the Short Gold Fund’s critical accounting policies will be as follows:

Preparation of the financial statements and related disclosures in compliance with accounting principles generally accepted in the United States of America requires the application of appropriate accounting rules and guidance, as well as the use of estimates. The Sponsor’s application of these policies involves judgments and actual results may differ from the estimates used.

The Natural Gas Funds and the Short Gold Fund will have significant exposure to one or more types of Financial Instruments, each of which will be recorded on a trade date basis and at fair value in the financial statements, with changes in fair value reported in the Statements of Operations.

The use of fair value to measure Financial Instruments, with related unrealized gains or losses recognized in earnings in each period, will be fundamental to the Natural Gas Funds and the Short Gold Fund’s financial statements. The fair value of a Financial Instrument will be the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price).

Derivatives (e.g., futures, swaps and forward agreements) will generally be valued using independent sources and/or agreements with counterparties or other procedures as determined by the Sponsor. Futures contracts will generally be valued at the last settled price on the applicable exchange on which that future trades. Futures contracts entered into by the Commodity Funds will be valued at the last sales price prior to the time at which the NAV for the Fund is determined. If there was no sale on that day, the Sponsor may, in its sole discretion, choose to determine a fair value price as the basis for determining the market value of such position for such day. Such fair value prices would generally be determined based on available inputs about the current value of the underlying Financial Instrument or commodity and would be based on principles that the Sponsor deems fair and equitable so long as such principles are consistent with normal industry standards.

Fair value pricing may require subjective determinations about the value of an investment. While each Natural Gas Fund and the Short Gold Fund’s policy is intended to result in a calculation of its NAV that fairly reflects investment values as of the time of pricing, these Funds cannot ensure that fair values determined by the Sponsor or persons acting at their direction would accurately reflect the price that they could obtain for an investment if it were to dispose of that investment as of the time of pricing (for instance, in a forced or distressed sale). The prices used by these Funds may differ from the value that would be realized if the investments were sold and the differences could be material to the financial statements.

Realized gains (losses) and changes in unrealized gain (loss) on open positions will be determined on a specific identification basis and recognized in the Statements of Operations in the period in which the contract is closed or the changes occur, respectively.

The projected twelve month breakeven analysis for the Funds is set forth in the Breakeven Table below. For purposes of calculating the amounts in the Breakeven Table for the Funds (other than the Natural Gas Funds and the Short Gold Fund), the analysis assumes that the average daily NAV per Fund is $25.00. For purposes of calculating the amounts in the Breakeven Table for the Natural Gas Funds and the Short Gold Fund, the analysis assumes that the average daily NAV per Fund is $40.00.

Offering costs will be amortized by the Funds over a twelve-month period on a straight line basis. The Sponsor will not charge its fee in the first year of operations of each Natural Gas Fund and the Short Gold Fund in an amount equal to the offering costs incurred by such Fund. The Sponsor will reimburse each such Fund to the extent that its offering costs exceed 0.95% of its average daily NAV for the first year of operations. Normal and expected expenses incurred in connection with the continuous offering of Shares of each Fund are paid by the Sponsor.

Each Fund pays the Sponsor a management fee (the “Management Fee”), monthly in arrears, in an amount equal to 0.95% per annum of its average daily NAV, except as noted under “Offering Costs,” above.

No other management fee is paid by the Funds. The Management Fee is paid in consideration of the Sponsor’s trading advisory services and the other services provided to the Funds that the Sponsor pays directly.

The Sponsor pays Dow Jones—UBS a licensing fee for the Dow Jones – UBS Commodity Index, which serves as the benchmark for the ProShares Ultra DJ-UBS Commodity and ProShares UltraShort DJ-UBS Commodity Funds, as well as for the Dow Jones-UBS Natural Gas Subindex^SM, which serves as the benchmark for each Natural Gas Fund.

The Sponsor pays all of the routine operational, administrative and other ordinary expenses of each Fund, generally, as determined by the Sponsor, including, but not limited to, fees and expenses of the Administrator, Custodian, Distributor and Transfer Agent, licensing fees, accounting and audit fees and expenses, tax preparation expenses, legal fees not in excess of $100,000 per annum, ongoing SEC registration fees not exceeding 0.021% per annum of the NAV of the Funds, Financial Industry Regulatory Authority, Inc. (“FINRA”) filing fees, individual K-1 preparation and mailing fees not exceeding 0.10% per annum of the NAV of the Funds, and report preparation and mailing expenses.

The Funds pay all of their non-recurring and unusual fees and expenses, if any, as determined by the Sponsor. Non-recurring and unusual fees and expenses are fees and expenses which are unexpected or unusual in nature, such as legal claims and liabilities and litigation costs or indemnification or other unanticipated expenses. Extraordinary fees and expenses also include material expenses which are not currently anticipated obligations of the Funds. Routine operational, administrative and other ordinary expenses are not deemed extraordinary expenses.

Retail investors may purchase and sell Shares through traditional brokerage accounts. Investors are expected to be charged a customary commission by their brokers in connection with purchases of Shares that will vary from investor to investor. Investors are encouraged to review the terms of their brokerage accounts for applicable charges. Also, the excess, if any, of the price at which an Authorized Participant sells a Share over the price paid by such Authorized Participant in connection with the creation of such Share in a Creation Unit may be deemed to be underwriting compensation.

Each Fund pays all of its respective brokerage commissions, including applicable exchange fees, NFA fees and give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities for each Fund’s investments in CFTC regulated investments.

The Funds bear other transaction costs including the effects of trading spreads and financing costs/fees associated with the use of Financial Instruments, and costs relating to the purchase of U.S. Treasury securities or similar high credit quality, short-term fixed-income or similar securities (such as shares of money market funds, bank deposits, bank money market accounts, certain variable rate-demand notes and collateralized repurchase agreements). The effects of these other transaction costs are not included in the above breakeven analysis.

Each of Jeffries Bache, LLC (“JBL”) (formerly Prudential Bache Commodities, LLC), RBC Capital Markets Corporation (“RBC”) and Merrill Lynch, Pierce, Fenner & Smith Incorporated (“Merrill Lynch”), in its capacity as a registered FCM, serves as the Funds’ clearing broker and as such arranges for the execution and clearing of the Funds’ futures transactions. Each of JBL, Merrill Lynch and RBC acts as clearing broker for many other funds and individuals. A variety of executing brokers may execute futures transactions on behalf of the Funds. The executing brokers will give up all such transactions to JBL, Merrill Lynch or RBC, as applicable.

The investor should be advised that neither JBL, Merrill Lynch nor RBC is affiliated with or acts as a supervisor of the Funds or the Funds’ commodity trading advisors, investment managers, trustees, general partners, administrators, transfer agents, registrars or organizers. Additionally, neither JBL, Merrill Lynch nor RBC is acting as an underwriter or sponsor of the offering of any Shares or interests in the Funds or has passed upon the merits of participating in this offering.

Neither JBL, Merrill Lynch nor RBC has passed upon the adequacy of this Prospectus or on the accuracy of the information contained herein. Additionally, neither JBL, Merrill Lynch nor RBC provides any commodity trading advice regarding the Funds’ trading activities. Investors should not rely upon JBL, Merrill Lynch or RBC in deciding whether to invest in the Funds or retain their interests in the Funds. Investors should also note that the Funds may select additional clearing brokers or replace JBL, Merrill Lynch and/or RBC as the Funds’ clearing broker.

In April 2006, one of JBL’s commodities brokers filed an arbitration proceeding in connection with the broker’s termination based upon allegations of sexual harassment. The broker alleged that the termination was a pretext to steal his business without compensation. The claims, brought against an affiliate of JBL, included fraud, breach of contract, unjust enrichment, quantum meruit and defamation. The claimant sought damages in excess of $28 million, of which $25 million was for defamation, and unspecified punitive damages. The parties settled this matter in December 2007, prior to the arbitration hearing scheduled for January 2008. The former employee executed a Settlement Agreement and General Release dismissing the matter with prejudice, essentially in exchange for commissions owed, interest and certain costs associated with the proceeding.

In December 2009, JBL was served with served with a statement of claim in an arbitration brought before the NFA. The claimant, an oil company involved in the marketing, supply and transportation of petroleum products (the “Claimant”), alleges that JBL knew that one of Claimant’s employees, who had been an authorized trader for the Claimant, engaged in unauthorized trading and that JBL permitted him to do so. Claimant alleges actual damages of $7 million and, to the extent it also alleges that JBL violated the “RICO” statute, claims treble damages, or $21 million. JBL has filed an answer denying any responsibility for the conduct of the Claimant’s employee. A hearing in this arbitration is scheduled for November 2011.

Merrill Lynch has been named as a defendant in various legal actions, including arbitrations, class actions and other litigation arising in connection with its activities as a global, diversified, financial services institution.

Some of the legal actions include claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages. In some cases, the issuers that would otherwise be the primary defendants in such cases are bankrupt or otherwise in financial distress. Merrill Lynch is also involved in investigations and/or proceedings by governmental and self-regulatory agencies.

Bank of America Corporation (“Bank of America”), Merrill Lynch’s ultimate parent, makes all required disclosures in its Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q, which may be updated in reports on Form 8-K, all of which are filed with the SEC (“Regulatory Filings”). Merrill Lynch makes all required disclosures in its Form BD and ADV filings (“Form BD and ADV Filings”) with FINRA. Those Regulatory Filings and Form BD and ADV Filings include disclosures of regulatory inquiries as required by federal law and applicable regulations. The Regulatory Filings are publicly available on the SEC’s website at www.sec.gov. The Form BD filings are publicly available on the FINRA BrokerCheck system at http://www.finra.org/Investors/Tools Calculators/ BrokerCheck/index.htm. The Form ADV filings are publicly available on the SEC’s Investment Adviser Search website at: http://www.adviserinfo.sec.gov/(S(cerr0u55hmrw5a45022y3vnz))/IAPD/Content/Search/iapd_Search.aspx.

In view of the inherent difficulty of predicting the outcome of litigation and regulatory matters, particularly where the claimants seek very large or indeterminate damages or where the matters present novel legal theories or involve a large number of parties, Merrill Lynch generally cannot predict what the eventual outcome of the pending matters will be, what the timing of the ultimate resolution of these matters will be, or what the eventual loss, fines or penalties related to each pending matter may be.

In accordance with applicable accounting guidance, Merrill Lynch establishes an accrued liability for litigation and regulatory matters when those matters present loss contingencies that are both probable and estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. When a loss contingency is not both probable and estimable, Merrill Lynch does not establish an accrued liability. As a litigation or regulatory matter develops, Merrill Lynch, in conjunction with any outside counsel handling the matter, evaluates on an ongoing basis whether such matter presents a loss contingency that is probable and estimable. If, at the time of evaluation, the loss contingency related to a litigation or regulatory matter is not both probable and estimable, the matter will continue to be monitored for further developments that would make such loss contingency both probable and estimable. Once the loss contingency related to a litigation or regulatory matter is deemed to be both probable and estimable, Merrill Lynch will establish an accrued liability with respect to such loss contingency and continue to monitor the matter for further developments that could affect the amount of the accrued liability that has been previously established.

In some of the matters described below, loss contingencies are not both probable and estimable in the view of management, and accordingly, an accrued liability has not been established for those matters. Information is provided below regarding the nature of these contingencies and, where specified, the amount of the claim associated with these loss contingencies. Based on current knowledge, management does not believe that loss contingencies arising from pending matters, will have a material adverse effect on Merrill Lynch’s consolidated financial position or liquidity. However, in light of the inherent uncertainties involved in these matters, and the very large or indeterminate damages sought in some or all of these matters, an adverse outcome in one or more of these matters could be material to Merrill Lynch’s results of operations or cash flows for any particular reporting period.

The actions against Merrill Lynch include, but are not limited to, the following:

Since October 2007, Merrill Lynch, and its former affiliate Banc of America Securities LLC (“BAS”, which was merged into Merrill Lynch on November 1, 2010 with Merrill Lynch as the surviving corporation in the merger) has been named as defendants in a variety of lawsuits and other proceedings brought by customers and both individual and institutional investors regarding auction rate securities (“ARS”). These actions generally allege that the defendants (i) misled the plaintiffs into believing that there was a deeply liquid market for ARS, and (ii) failed to adequately disclose their or their affiliates’ practice of placing their own bids to support ARS auctions. Plaintiffs assert that ARS auctions started failing from August 2007 through February 2008 when the defendants and other broker-dealers stopped placing those “support bids.” In addition to the matters described in more detail below, numerous arbitrations and individual lawsuits have been filed against Merrill Lynch and certain affiliates by parties who purchased ARS and are seeking relief that includes compensatory and punitive damages totaling in excess of $1.80 billion, as well as rescission, among other relief.

Merrill Lynch and its direct corporate parent Merrill Lynch & Co., Inc. (the “Parent”) face a number of civil actions relating to the sales of ARS and management of ARS auctions, including two putative class action lawsuits in which the plaintiffs seek to recover the alleged losses in market value of ARS securities purportedly caused by the defendants’ actions. Plaintiffs also seek unspecified damages, including rescission, other compensatory and consequential damages, costs, fees and interest. The first action, In Re Merrill Lynch Auction Rate Securities Litigation, is the result of the consolidation of two separate class action suits in the U.S. District Court for the Southern District of New York. These suits were brought by two customers of Merrill Lynch, on behalf of all persons who purchased ARS in auctions managed by Merrill Lynch and other affiliates, against the Parent and Merrill Lynch. On March 31, 2010, the U.S. District Court for the Southern District of New York granted defendants’ motion to dismiss. On April 22, 2010, a lead plaintiff filed a notice of appeal to the U.S. Court of Appeals for the Second Circuit, which is currently pending. The second action, Bondar v. Bank of America Corporation, was brought by a putative class of ARS purchasers against BAS and is currently pending in the U.S. District Court for the Northern District of California. BAS has filed a motion to dismiss the amended complaint, which remains pending.

In Gail Cahaly, et al. v. Merrill Lynch, Pierce, Fenner & Smith Incorporated, Benistar Property Exchange Trust Co., Inc. (“Benistar”), et al. (Massachusetts Superior Court, Suffolk County, MA), plaintiffs alleged that Merrill Lynch aided and abetted a fraud, violation of a consumer protection law, and breach of fiduciary duty allegedly perpetrated by Benistar, a former client of Merrill Lynch, in connection with trading in the client’s account. During the proceedings, plaintiffs also made allegations that Merrill Lynch engaged in sanctionable conduct in connection with the discovery process and the trial. In 2002, following a trial, a jury rendered a verdict for plaintiffs. Thereafter, the court granted Merrill Lynch’s motion to vacate and plaintiffs’ motion for a new trial. On June 25, 2009, following a retrial, the jury found in plaintiffs’ favor. On January 11, 2011, the court entered rulings denying plaintiffs’ motion for sanctions and punitive damages, awarding certain plaintiffs consequential damages, and awarding attorneys’ fees and costs. On February 7, 2011, the court issued final judgment requiring Merrill Lynch to pay $9.7 million in consequential and compensatory damage plus statutory interest, and $8.7 million in attorneys’ fees and costs; but denying plaintiffs’ requests for punitive damages and sanctions. The client, a co-defendant, filed a notice of appeal of the court’s denial of its motion for a new trial on or about January 19, 2011. On or about January 24, 2011, plaintiffs filed a notice of appeal of the court’s denial of their motion for sanctions pursuant to Mass. Gen. Laws ch. 231 §6G. On March 1, 2011, the plaintiffs filed a notice of appeal of the court’s denial of their requests for punitive damages and sanctions, and Merrill Lynch filed a notice of cross appeal on March 15, 2011.

Commencing in 1979, the Illinois Funeral Directors Association (“IFDA”), an Illinois not-for-profit corporation that serves as a trade association representative for the Illinois funeral industry, began providing trust services to Illinois consumers for the deposit of payments for pre-paid funeral services. Illinois law regulates the sale of pre-paid funeral goods and services and requires that proceeds of those sales be held in trust. In 1986, the IFDA began offering a tax-advantaged pre-need trust administered by its subsidiary, IFDA Services, Inc. (“IFDA Services”). The tax-advantaged pre-need trust invested primarily in variable universal life insurance (“VUL”) policies written against the lives of “keymen” of IFDA, its members and its affiliates. In response to the stated investment objectives of IFDA’s executive director and its board of directors, Merrill Lynch recommended the purchase of the VUL policies to IFDA for the tax-advantaged pre-need trust, and Merrill Lynch Life Agency, Inc. (“MLLA”), sold the pre-need trust approximately 270 VUL policies as investment vehicles.

During IFDA Services’ operation of the pre-need trust, it credited IFDA members with earnings on deposits into the pre-need trust based on a rate of return set by IFDA Services, even though the crediting rate sometimes exceeded the actual earnings on the trust investments. As a result, a deficit developed between the amounts that the IFDA credited to IFDA members and the actual earnings of the trust. The Illinois Office of the Comptroller, the trust’s regulator, removed IFDA Services as trustee of the trust in 2008, and asked Merrill Lynch Bank & Trust Company, FSB (“MLBTC”), to serve as successor trustee.

There currently are four court proceedings relating to the IFDA pre-need trust pending against the Parent and affiliated entities and their present and former employees:

On July 28, 2010, Charles G. Kurrus, III, P.C., a funeral director and owner of a funeral home, filed an action in the Circuit Court for the Twentieth Judicial Circuit, St. Clair County, Illinois, against Merrill Lynch, MLLA and MLBTC, among others, including present and former Company employees. The complaint, entitled Charles F. Kurrus, III, P.C. v. Merrill Lynch, Pierce, Fenner & Smith, Inc., et al., asserts causes of action for breach of the Illinois Consumer Fraud and Deceptive Business Practices Act and civil conspiracy against all defendants; breach of fiduciary duty against Merrill Lynch and MLBTC; and negligence and aiding and abetting breach of fiduciary duty against Merrill Lynch. The complaint seeks declaratory relief; disgorgement of all commissions, fees and revenues received by Merrill Lynch, MLLA and MLBTC; pre-judgment and post-judgment interest; an accounting; and

attorneys’ fees. The complaint seeks: disgorgement and remittance of all commissions, premiums, fees and compensation paid to Merrill Lynch, MLLA, and MLBTC; an accounting; compensatory damages in an unliquidated amount; pre-judgment and post-judgment interest; reasonable attorneys’ and experts’ fees and costs. Defendants have filed motions to dismiss.

On June 16, 2009, a purported class action on behalf of a proposed class of pre-need contract holders, David Tipsword as Trustee of Mildred E. Tipsword Trust, individually and on behalf of all others similarly situated v. I.F.D.A. Services Inc., et al., was filed in the U.S. District Court for the Southern District of Illinois against Merrill Lynch, among other defendants. The complaint alleges that Merrill Lynch breached purported fiduciary duties and committed negligence. Merrill Lynch filed a motion to dismiss the complaint, with prejudice, however, the Tipsword complaint was subject to a court-imposed stay until October 4, 2010. On November 22, 2010, plaintiff filed an amended complaint substituting Claudia Burns for Mr. Tipsword as plaintiff in an amended complaint. The amended complaint seeks compensatory damages in an unliquidated amount, punitive damages, reasonable attorneys’ fees, and costs. Merrill Lynch has filed a motion to dismiss.

On June 30, 2009, a purported class action on behalf of a proposed class of funeral directors, Clancy-Gernon Funeral Home, Inc., et al. v. MLPF&S, et al., was filed in the Circuit Court of Cook County, Illinois, alleging that Merrill Lynch and MLLA, among other defendants, committed consumer fraud, civil conspiracy, unjust enrichment, and conversion. Merrill Lynch and MLLA removed the complaint to the U.S. District Court for the Northern District of Illinois, and the case ultimately transferred to the U.S. District Court for the Southern District of Illinois and consolidated with the Tipsword action. Because of the consolidation with the Tipsword action, the Clancy-Gernon matter also was subject to the court-imposed stay until October 4, 2010. On November 9, 2010, plaintiff filed a third amended complaint, which added new parties, including MLBTC, and additional claims. In addition to the claims asserted in the original complaint, the complaint now asserts claims for fraud, breach of fiduciary duty, negligence and aiding and abetting fiduciary duty against Merrill Lynch and MLLA, and breach of fiduciary duty and negligence against MLBTC. Merrill Lynch, MLLA and MLBTC have filed motions to dismiss. The third amended complaint seeks: disgorgement and remittance of all commissions, premiums, fees and compensation paid to Merrill Lynch, MLLA, and MLBTC; an accounting; compensatory damages in an unliquidated amount; pre-judgment and post-judgment interest; reasonable attorneys’ and experts’ fees and costs.

On December 9, 2010, a purported class action on behalf of a proposed class of funeral directors, Pettett Funeral Home, Ltd., et al. v. MLPF&S, et al., was filed in the U.S. District Court for the Southern District of Illinois, alleging that Merrill Lynch, MLLA and MLBTC, among other defendants, committed consumer fraud, civil conspiracy, unjust enrichment, and breach of fiduciary duty. On January 7, 2010, plaintiff filed a second amended complaint, which added claims for fraud, negligence and aiding and abetting fiduciary duty against Merrill Lynch, MLLA and MLBTC, and added an additional breach of fiduciary duty claim against MLBTC. The second amended complaint seeks: disgorgement and remittance of all commissions, premiums, fees and compensation paid to Merrill Lynch, MLLA, and MLBTC; an accounting; compensatory damages in an unliquidated amount; punitive damages; restitution; pre-judgment and post-judgment interest; reasonable attorneys’ and experts’ fees and costs. On January 19, 2011, defendants filed a motion to consolidate this matter with the Tipsword and Clancy-Gernon actions and to dismiss the second amended complaint with prejudice.

The Parent, Merrill Lynch, including BAS, and another affiliate of the Parent, along with other underwriters, and various issuers and others, were named as defendants in a number of putative class action lawsuits that have been consolidated in the U.S. District Court for the Southern District of New York as In re Initial Public Offering Securities Litigation. Plaintiffs contend, among other things, that defendants failed to make certain required disclosures in the registration statements and prospectuses for applicable offerings regarding alleged agreements with institutional investors that tied allocations in certain offerings to the purchase orders by those investors in the aftermarket. Plaintiffs allege that such agreements allowed defendants to manipulate the price of the securities sold in these offerings in violation of Section 11 of the 1933 Act and Section 10(b) of the 1934 Act and SEC rules promulgated thereunder. The parties agreed to settle the matter, for which the court granted final approval in an amount that was not material to Merrill Lynch’s results of operations. Some putative class members have filed an appeal, which remains pending, in the U.S. Court of Appeals for the Second Circuit seeking reversal of the final approval.

Beginning in September 2008, Merrill Lynch, including BAS, and affiliated entities, along with other underwriters and individuals, were named as defendants in several putative class action lawsuits filed in federal and state courts. All of these cases have since been transferred or conditionally transferred to the U.S. District Court for the Southern District of New York under the caption In re Lehman Brothers Securities and ERISA Litigation. Plaintiffs allege that the underwriter defendants violated Section 11 of the 1933 Act, as well as various state laws, by making false or misleading disclosures about the real estate-related investments and mortgage lending practices of Lehman Brothers Holdings, Inc. (“LBHI”) in connection with various debt and convertible stock offerings of LBHI. Plaintiffs seek unspecified damages. On June 4, 2010, defendants filed a motion to dismiss the complaint, which remains pending.

On April 30, 2009, MBIA and LaCrosse Financial Products, LLC filed a complaint in New York State Supreme Court, New York County, against Merrill Lynch and Merrill Lynch International (“MLI”) under the caption MBIA Insurance Corporation and LaCrosse Financial Products, LLC v. Merrill Lynch Pierce Fenner and Smith Inc., and Merrill Lynch International (“MLI”). The complaint relates to certain credit default swap and insurance agreements by which plaintiffs provided credit protection to Merrill Lynch and MLI and other parties on CDO securities. Plaintiffs claim that Merrill Lynch and MLI did not adequately disclose the credit quality and other risks of the CDO securities and underlying collateral. The complaint alleges claims for fraud, negligent misrepresentation, breach of the implied covenant of good faith and fair dealing and breach of contract and seeks rescission and unspecified compensatory and punitive damages, among other relief. On April 9, 2010, the court granted defendants’ motion to dismiss as to the fraud, negligent misrepresentation, and breach of the implied covenant of good faith and fair dealing and rescission claims, as well as a portion of the breach of contract claim. Plaintiffs have appealed the dismissal of their claims and MLI has cross-appealed the denial of its motion to dismiss the breach of contract claim in its entirety. On February 1, 2011, the appellate court dismissed the case against MLI in its entirety. MBIA has filed a request to appeal the appellate court’s decision to the New York State Court of Appeal and has requested permission from the trial court to file an amended complaint.

The Parent, Merrill Lynch, including BAS, and their affiliates have been named as defendants in several cases relating to their various roles as issuer, originator, seller, depositor, sponsor, underwriter and/or controlling entity in mortgage-backed securities (“MBS”) offerings, pursuant to which the MBS investors were entitled to a portion of the cash flow from the underlying pools of mortgages. These cases generally include purported class action suits and actions by individual MBS purchasers. Although the allegations vary by lawsuit, these cases generally allege that the registration statements, prospectuses and prospectus supplements for securities issued by securitization trusts contained material misrepresentations and omissions, in violation of Sections 11 and 12 of the 1933 Act and/or state securities laws and other state statutory and common laws.

These cases generally involve allegations of false and misleading statements regarding (i) the process by which the properties that served as collateral for the mortgage loans underlying the MBS were appraised; (ii) the percentage of equity that mortgage borrowers had in their homes; (iii) the borrowers’ ability to repay their mortgage loans; and (iv) the underwriting practices by which those mortgage loans were originated (collectively, the “MBS Claims”). In addition, several of the cases discussed below assert claims related to the ratings given to the different tranches of MBS by rating agencies. Plaintiffs in these cases generally seek unspecified compensatory damages, unspecified costs and legal fees and, in some instances, seek rescission.

In 2006 and 2007, Merrill Lynch and other financial institutions participated as underwriters in MBS offerings in which IndyMac MBS, Inc. securitized residential mortgage loans originated or acquired by IndyMac Bank, F.S.B. (“IndyMac Bank”) and created trusts that issued MBS. In 2009, Bank of America was named as an underwriter defendant, along with several other financial institutions, in its alleged capacity as “successor-in-interest” to Merrill Lynch in a consolidated class action in the U.S. District Court for the Southern District of New York, entitled In re IndyMac Mortgage-Backed Securities Litigation. In their complaint, plaintiffs assert MBS Claims relating to 106 offerings of IndyMac-related MBS. On June 21, 2010, the court dismissed Bank of America from the action because the plaintiffs failed to plead sufficient facts to support their allegation that it is the “successor-in-interest” to Merrill Lynch. On August 3, 2010, plaintiffs filed a motion to add Merrill Lynch as a defendant, which Merrill Lynch has opposed.

The Parent, Merrill Lynch, Merrill Lynch Mortgage Investors, Inc. (“MLMI”) and certain current and former directors of MLMI are named as defendants in a putative consolidated class action in the U.S. District Court in the Southern District of New York, entitled Public Employees’ Ret. System of Mississippi v. Merrill Lynch & Co. Inc. In addition to MBS Claims, plaintiffs also allege that the offering documents for the MBS misrepresented or omitted material facts regarding the credit ratings assigned to the securities. In March 2010, the court dismissed claims related to 65 of 84 offerings with prejudice due to lack of standing as no named plaintiff purchased securities in those offerings. On November 8, 2010, the court dismissed claims related to 1 of 19 remaining offerings on separate grounds. Merrill Lynch was the sole underwriter of these 18 offerings. On December 1, 2010, defendants filed an answer to the consolidated amended complaint.

Cambridge Place Investment Management Inc. (“CPIM”), as the alleged exclusive assignee of certain entities that allegedly purchased MBS offered or sold by BAS and Merrill Lynch brought an action against Merrill Lynch, BAS and MLMI in Massachusetts Superior Court, Suffolk County, entitled Cambridge Place Investment Management Inc. v. Morgan Stanley & Co., Inc., et al. CPIM

also brought claims against more than 50 other defendants in this action. In addition to MBS Claims, CPIM contends that BAS, Merrill Lynch, and MLMI made false and misleading statements in violation of the Massachusetts Uniform Securities Act regarding (i) due diligence performed by the underwriters on the mortgage loans and the mortgage originators’ underwriting practices; and (ii) the credit enhancements applicable to certain tranches of the MBS. On August 13, 2010, certain defendants removed the case to the U.S. District Court for the District of Massachusetts. On September 13, 2010, CPIM filed a motion to remand the case back to state court. On October 12, 2010, the court referred the motion to remand to a Magistrate Judge for consideration. On December 28, 2010, the Magistrate Judge issued a report and recommendation that the action be remanded to state court. On January 18, 2011, the defendants filed an objection to that recommendation, which CPIM opposed on February 1, 2011. The objection to the Magistrate Judge’s recommendation remains pending.

On February 11, 2011, CPIM commenced a separate civil action in Massachusetts Superior Court, Suffolk County, captioned Cambridge Place Investment Management Inc. v. Morgan Stanley & Co., Inc., et al., in connection with the offering or sale of certain additional MBS by BAS, Merrill Lynch, Countrywide Securities Corporation (“CSC”), several of their affiliates, and more than 40 other defendants. CPIM alleges that it is the assignee of the claims of certain entities that allegedly purchased MBS issued or sold by BAS, Merrill Lynch, and CSC in various offerings. In addition to MBS Claims, CPIM contends that BAS, Merrill Lynch, CSC and their affiliates made false and misleading statements in violation of the Massachusetts Uniform Securities Act in connection with these offerings regarding: (i) due diligence performed by the underwriters on the mortgage loans and the mortgage originators’ underwriting practices; (ii) the credit enhancements applicable to certain tranches of the MBS; and (iii) the validity of each issuing trust’s title to the mortgage loans comprising the pool for that securitization.

The Federal Home Loan Bank of Chicago (“FHLB Chicago”) filed a complaint against Merrill Lynch and BAS in the Illinois Circuit Court, Cook County, entitled Federal Home Loan Bank of Chicago v. Banc of America Funding Corp., et al (the “Illinois Action”). FHLB Chicago also filed a complaint against BAS in the Superior Court of California, Los Angeles County, entitled Federal Home Loan Bank of Chicago v. Banc of America Securities LLC, et al. (the “California Action”). In addition to certain MBS Claims, FHLB Chicago contends that defendants made false and misleading statements regarding among other things, the guidelines for extending mortgages to borrowers and the due diligence performed on repurchased and pooled loans. Both actions have been removed to federal court.

The Federal Home Loan Bank of Seattle (“FHLB Seattle”) filed two separate complaints, each against different defendants, including Merrill Lynch, MLMI and Merrill Lynch Mortgage Capital, Inc. (“MLMC”), and BAS, as well as certain other defendants, in the Superior Court of Washington for King County concerning separate issuances, entitled Federal Home Loan Bank of Seattle v. Banc of America Securities LLC, et al, and Federal Home Loan Bank of Seattle v. Merrill Lynch, Pierce, Fenner & Smith, Inc., et al. In addition to certain MBS Claims, FHLB Seattle contends that defendants made false and misleading statements regarding the number of borrowers who actually lived in the houses that secured the mortgage loans, and the business practices of the lending institutions that made the mortgage loans. FHLB Seattle claims that the sales violated the Securities Act of Washington. On October 18, 2010, BAS and other defendants filed a consolidated motion to dismiss the first complaint, which is currently pending. On the same date, Merrill Lynch entities named as defendants in the second case (Merrill Lynch, MLMI, MLMC) filed a motion to dismiss the amended complaint, which is currently pending.

The Federal Home Loan Bank of San Francisco (“FHLB San Francisco”) filed two actions against different defendants, including Merrill Lynch and BAS, in the Superior Court of California, County of San Francisco, entitled (i) Federal Home Loan Bank of San Francisco v. Credit Suisse Securities (USA) LLC, et al, which asserts claims against the BAS and others; and (ii) Federal Home Loan Bank of San Francisco v. Deutsche Bank Securities Inc., et al, which asserts claims against Merrill Lynch and others. In addition to certain MBS Claims, FHLB San Francisco contends that defendants made false and misleading statements regarding the original mortgage lenders’ guidelines for extending the loans to borrowers. FHLB San Francisco also claims that defendants failed to disclose that third party rating services’ credit ratings of the MBS did not take into account defendants’ false and misleading statements about the mortgage loans underlying the MBS. On November 5, 2010, FHLB San Francisco sought permission from the court to amend its complaint in the first action



Title of Securities to be Registered	Proposed Maximum Aggregate Offering Price	Amount of Registration Fee¹
ProShares Ultra DJ-UBS Commodity Common Units of Beneficial Interest	$300,000,000	$16,740.00
ProShares UltraShort DJ-UBS Commodity Common Units of Beneficial Interest	$500,000,000	$31,000.00
ProShares Ultra DJ-UBS Natural Gas Common Units of Beneficial Interest	$500,000,000	$35,650.00
ProShares UltraShort DJ-UBS Natural Gas Common Units of Beneficial Interest	$500,000,000	$35,650.00
ProShares Short Gold Common Units of Beneficial Interest	$500,000,000	$35,650.00
ProShares Ultra Euro Common Units of Beneficial Interest	$500,000,000	$27,900.00
ProShares Ultra Yen Common Units of Beneficial Interest	$500,000,000	$27,900.00
ProShares Ultra VIX Short-Term Futures ETF Common Units of Beneficial Interest	$500,000,000	$35,650.00
ProShares VIX Short-Term Futures ETF Common Units of Beneficial Interest	$800,000,000	$57,040.00
ProShares Short VIX Short-Term Futures ETF Common Units of Beneficial Interest	$500,000,000	$35,650.00
ProShares VIX Mid-Term Futures ETF Common Units of Beneficial Interest	$500,000,000	$35,650.00
TOTAL	$5,600,000,000	$374,480.00(2)


Title of Securities to be Registered	Proposed Maximum Aggregate Offering Price Per Fund
ProShares Ultra DJ-UBS Commodity (UCD)	$	300,000,000
ProShares UltraShort DJ-UBS Commodity (CMD)	$	500,000,000
ProShares Ultra DJ-UBS Natural Gas (BOIL)	$	500,000,000
ProShares UltraShort DJ-UBS Natural Gas (KOLD)	$	500,000,000
ProShares Short Gold (SAU)	$	500,000,000
ProShares Ultra Euro (ULE)	$	500,000,000
ProShares Ultra Yen (YCL)	$	500,000,000


	Page
Margin Levels Expected to be Held at the FCMs		52

MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS		53

Status of the Funds		54
U.S. Shareholders		55

PART TWO
GENERAL POOL DISCLOSURE

PERFORMANCE OF OTHER COMMODITY POOLS OPERATED BY THE COMMODITY POOL OPERATOR		63

USE OF PROCEEDS		74

WHO MAY SUBSCRIBE		75

CREATION AND REDEMPTION OF SHARES		75

Creation Procedures		76
Redemption Procedures		77
Creation and Redemption Transaction Fee		78
Special Settlement		78

LITIGATION		79

DESCRIPTION OF THE SHARES; THE FUNDS; CERTAIN MATERIAL TERMS OF THE TRUST AGREEMENT		80

Description of the Shares		80
Principal Office; Location of Records; Fiscal Year		80
The Funds		80
The Trustee		81
The Sponsor		81
Fiduciary and Regulatory Duties of the Sponsor		83
Ownership or Beneficial Interest in the Funds		84
Management; Voting by Shareholders		84
Recognition of the Trust and the Funds in Certain States		84
Possible Repayment of Distributions Received by Shareholders		85
Shares Freely Transferable		85
Book-Entry Form		85
Reports to Shareholders		85
Net Asset Value (NAV)		85
Indicative Optimized Portfolio Value (“IOPV”)		86
Termination Events		86

DISTRIBUTIONS		86

THE ADMINISTRATOR		86

THE CUSTODIAN		87

THE TRANSFER AGENT		87

THE DISTRIBUTOR		87


	Page
Description of SEI		87

THE SECURITIES DEPOSITORY; BOOK-ENTRY ONLY SYSTEM; GLOBAL SECURITY		88

SHARE SPLITS OR REVERSE SPLITS		88

CONFLICT OF INTEREST		88

MATERIAL CONTRACTS		89

Administrative Agency Agreement		89
Custodian Agreement		89
Distribution Agreement		90
Futures Account Agreement		90

PURCHASES BY EMPLOYEE BENEFIT PLANS		91

General		91
“Plan Assets”		91
Ineligible Purchasers		91

PLAN OF DISTRIBUTION		93

Buying and Selling Shares		93
Authorized Participants		93
Likelihood of Becoming a Statutory Underwriter		93
General		94

LEGAL MATTERS		95

EXPERTS		95

WHERE INVESTORS CAN FIND MORE INFORMATION		95

RECENT FINANCIAL INFORMATION AND ANNUAL REPORTS		95

PRIVACY POLICY		96

The Trust’s Commitment to Investors		96
The Information the Trust Collects About Investors		96
How the Trust Handles Investors’ Personal Information		96
How the Trust Safeguards Investors’ Personal Information		96

INCORPORATION BY REFERENCE OF CERTAIN DOCUMENTS		96

APPENDIX A – GLOSSARY		A-1


	Benchmark XYZ					Fund XYZ
	Level		Daily Performance			Daily Performance			Net Asset Value
Start		100.0							$	100.00
Day 1		103.0		3.0	%		6.0	%	$	106.00
Day 2		99.9		-3.0	%		-6.0	%	$	99.64
Day 3		103.9		4.0	%		8.0	%	$	107.61
Day 4		101.3		-2.5	%		-5.0	%	$	102.23
Day 5		105.1		3.7	%		7.4	%	$	109.80
Total Return				5.1	%		9.8	%


Benchmark	Historical Five-Year Average Volatility Rate as of July 31, 2011
Dow Jones—UBS Commodity Index^SM		21.18	%
Dow Jones—UBS Natural Gas Subindex^SM		45.43	%
The daily performance of gold bullion as measured by the U.S. dollar p.m. fixing price for delivery in London		21.16	%
The U.S. dollar price of the Euro		10.90	%
The U.S. dollar price of the Japanese yen		11.70	%


One Year Benchmark Performance	200% One Year Benchmark			Benchmark Volatility
One Year Benchmark Performance	Performance			0%			5%			10%			15%			20%			25%			30%			35%			40%			45%			50%			55%			60%
-60%		-120	%		-84.0	%		-84.0	%		-84.2	%		-84.4	%		-84.6	%		-85.0	%		-85.4	%		-85.8	%		-86.4	%		-86.9	%		-87.5	%		-88.2	%		-88.8	%
-55%		-110	%		-79.8	%		-79.8	%		-80.0	%		-80.2	%		-80.5	%		-81.0	%		-81.5	%		-82.1	%		-82.7	%		-83.5	%		-84.2	%		-85.0	%		-85.9	%
-50%		-100	%		-75.0	%		-75.1	%		-75.2	%		-75.6	%		-76.0	%		-76.5	%		-77.2	%		-77.9	%		-78.7	%		-79.6	%		-80.5	%		-81.5	%		-82.6	%
-45%		-90	%		-69.8	%		-69.8	%		-70.1	%		-70.4	%		-70.9	%		-71.6	%		-72.4	%		-73.2	%		-74.2	%		-75.3	%		-76.4	%		-77.6	%		-78.9	%
-40%		-80	%		-64.0	%		-64.1	%		-64.4	%		-64.8	%		-65.4	%		-66.2	%		-67.1	%		-68.2	%		-69.3	%		-70.6	%		-72.0	%		-73.4	%		-74.9	%
-35%		-70	%		-57.8	%		-57.9	%		-58.2	%		-58.7	%		-59.4	%		-60.3	%		-61.4	%		-62.6	%		-64.0	%		-65.5	%		-67.1	%		-68.8	%		-70.5	%
-30%		-60	%		-51.0	%		-51.1	%		-51.5	%		-52.1	%		-52.9	%		-54.0	%		-55.2	%		-56.6	%		-58.2	%		-60.0	%		-61.8	%		-63.8	%		-65.8	%
-25%		-50	%		-43.8	%		-43.9	%		-44.3	%		-45.0	%		-46.0	%		-47.2	%		-48.6	%		-50.2	%		-52.1	%		-54.1	%		-56.2	%		-58.4	%		-60.8	%
-20%		-40	%		-36.0	%		-36.2	%		-36.6	%		-37.4	%		-38.5	%		-39.9	%		-41.5	%		-43.4	%		-45.5	%		-47.7	%		-50.2	%		-52.7	%		-55.3	%
-15%		-30	%		-27.8	%		-27.9	%		-28.5	%		-29.4	%		-30.6	%		-32.1	%		-34.0	%		-36.1	%		-38.4	%		-41.0	%		-43.7	%		-46.6	%		-49.6	%
-10%		-20	%		-19.0	%		-19.2	%		-19.8	%		-20.8	%		-22.2	%		-23.9	%		-26.0	%		-28.3	%		-31.0	%		-33.8	%		-36.9	%		-40.1	%		-43.5	%
- 5%		-10	%		-9.8	%		-10.0	%		-10.6	%		-11.8	%		-13.3	%		-15.2	%		-17.5	%		-20.2	%		-23.1	%		-26.3	%		-29.7	%		-33.3	%		-37.0	%
0%		0	%		0.0	%		-0.2	%		-1.0	%		-2.2	%		-3.9	%		-6.1	%		-8.6	%		-11.5	%		-14.8	%		-18.3	%		-22.1	%		-26.1	%		-30.2	%
5%		10	%		10.3	%		10.0	%		9.2	%		7.8	%		5.9	%		3.6	%		0.8	%		-2.5	%		-6.1	%		-10.0	%		-14.1	%		-18.5	%		-23.1	%
10%		20	%		21.0	%		20.7	%		19.8	%		18.3	%		16.3	%		13.7	%		10.6	%		7.0	%		3.1	%		-1.2	%		-5.8	%		-10.6	%		-15.6	%
15%		30	%		32.3	%		31.9	%		30.9	%		29.3	%		27.1	%		24.2	%		20.9	%		17.0	%		12.7	%		8.0	%		3.0	%		-2.3	%		-7.7	%
20%		40	%		44.0	%		43.6	%		42.6	%		40.8	%		38.4	%		35.3	%		31.6	%		27.4	%		22.7	%		17.6	%		12.1	%		6.4	%		0.5	%
25%		50	%		56.3	%		55.9	%		54.7	%		52.8	%		50.1	%		46.8	%		42.8	%		38.2	%		33.1	%		27.6	%		21.7	%		15.5	%		9.0	%
30%		60	%		69.0	%		68.6	%		67.3	%		65.2	%		62.4	%		58.8	%		54.5	%		49.5	%		44.0	%		38.0	%		31.6	%		24.9	%		17.9	%
35%		70	%		82.3	%		81.8	%		80.4	%		78.2	%		75.1	%		71.2	%		66.6	%		61.2	%		55.3	%		48.8	%		41.9	%		34.7	%		27.2	%
40%		80	%		96.0	%		95.5	%		94.0	%		91.6	%		88.3	%		84.1	%		79.1	%		73.4	%		67.0	%		60.1	%		52.6	%		44.8	%		36.7	%
45%		90	%		110.3	%		109.7	%		108.2	%		105.6	%		102.0	%		97.5	%		92.2	%		86.0	%		79.2	%		71.7	%		63.7	%		55.4	%		46.7	%
50%		100	%		125.0	%		124.4	%		122.8	%		120.0	%		116.2	%		111.4	%		105.6	%		99.1	%		91.7	%		83.8	%		75.2	%		66.3	%		57.0	%
55%		110	%		140.3	%		139.7	%		137.9	%		134.9	%		130.8	%		125.7	%		119.6	%		112.6	%		104.7	%		96.2	%		87.1	%		77.5	%		67.6	%
60%		120	%		156.0	%		155.4	%		153.5	%		150.3	%		146.0	%		140.5	%		134.0	%		126.5	%		118.1	%		109.1	%		99.4	%		89.2	%		78.6	%


One Year Benchmark Performance	Inverse of One Year Benchmark			Benchmark Volatility
One Year Benchmark Performance	Performance			0%			5%			10%			15%			20%			25%			30%			35%			40%			45%			50%			55%			60%
-60%		60	%		150.0	%		149.4	%		147.5	%		144.4	%		140.2	%		134.9	%		128.5	%		121.2	%		113.0	%		104.2	%		94.7	%		84.7	%		74.4	%
-55%		55	%		122.2	%		121.7	%		120.0	%		117.3	%		113.5	%		108.8	%		103.1	%		96.6	%		89.4	%		81.5	%		73.1	%		64.2	%		55.0	%
-50%		50	%		100.0	%		99.5	%		98.0	%		95.6	%		92.2	%		87.9	%		82.8	%		76.9	%		70.4	%		63.3	%		55.8	%		47.8	%		39.5	%
-45%		45	%		81.8	%		81.4	%		80.0	%		77.8	%		74.7	%		70.8	%		66.2	%		60.9	%		54.9	%		48.5	%		41.6	%		34.4	%		26.9	%
-40%		40	%		66.7	%		66.3	%		65.0	%		63.0	%		60.1	%		56.6	%		52.3	%		47.5	%		42.0	%		36.1	%		29.8	%		23.2	%		16.3	%
-35%		35	%		53.8	%		53.5	%		52.3	%		50.4	%		47.8	%		44.5	%		40.6	%		36.1	%		31.1	%		25.6	%		19.8	%		13.7	%		7.3	%
-30%		30	%		42.9	%		42.5	%		41.4	%		39.7	%		37.3	%		34.2	%		30.6	%		26.4	%		21.7	%		16.7	%		11.3	%		5.6	%		-0.3	%
-25%		25	%		33.3	%		33.0	%		32.0	%		30.4	%		28.1	%		25.3	%		21.9	%		18.0	%		13.6	%		8.9	%		3.8	%		-1.5	%		-7.0	%
-20%		20	%		25.0	%		24.7	%		23.8	%		22.2	%		20.1	%		17.4	%		14.2	%		10.6	%		6.5	%		2.1	%		-2.6	%		-7.6	%		-12.8	%
-15%		15	%		17.6	%		17.4	%		16.5	%		15.0	%		13.0	%		10.5	%		7.5	%		4.1	%		0.3	%		-3.9	%		-8.4	%		-13.1	%		-17.9	%
-10%		10	%		11.1	%		10.8	%		10.0	%		8.6	%		6.8	%		4.4	%		1.5	%		-1.7	%		-5.3	%		-9.3	%		-13.5	%		-17.9	%		-22.5	%
- 5%		5	%		5.3	%		5.0	%		4.2	%		2.9	%		1.1	%		-1.1	%		-3.8	%		-6.9	%		-10.3	%		-14.0	%		-18.0	%		-22.2	%		-26.6	%
0%		0	%		0.0	%		-0.2	%		-1.0	%		-2.2	%		-3.9	%		-6.1	%		-8.6	%		-11.5	%		-14.8	%		-18.3	%		-22.1	%		-26.1	%		-30.2	%
5%		-5	%		-4.8	%		-5.0	%		-5.7	%		-6.9	%		-8.5	%		-10.5	%		-13.0	%		-15.7	%		-18.8	%		-22.2	%		-25.8	%		-29.6	%		-33.6	%
10%		-10	%		-9.1	%		-9.3	%		-10.0	%		-11.1	%		-12.7	%		-14.6	%		-16.9	%		-19.6	%		-22.5	%		-25.8	%		-29.2	%		-32.8	%		-36.6	%
15%		-15	%		-13.0	%		-13.3	%		-13.9	%		-15.0	%		-16.5	%		-18.3	%		-20.5	%		-23.1	%		-25.9	%		-29.0	%		-32.3	%		-35.7	%		-39.3	%
20%		-20	%		-16.7	%		-16.9	%		-17.5	%		-18.5	%		-19.9	%		-21.7	%		-23.8	%		-26.3	%		-29.0	%		-31.9	%		-35.1	%		-38.4	%		-41.9	%
25%		-25	%		-20.0	%		-20.2	%		-20.8	%		-21.8	%		-23.1	%		-24.8	%		-26.9	%		-29.2	%		-31.8	%		-34.7	%		-37.7	%		-40.9	%		-44.2	%
30%		-30	%		-23.1	%		-23.3	%		-23.8	%		-24.8	%		-26.1	%		-27.7	%		-29.7	%		-31.9	%		-34.5	%		-37.2	%		-40.1	%		-43.2	%		-46.3	%
35%		-35	%		-25.9	%		-26.1	%		-26.7	%		-27.6	%		-28.8	%		-30.4	%		-32.3	%		-34.5	%		-36.9	%		-39.5	%		-42.3	%		-45.3	%		-48.3	%
40%		-40	%		-28.6	%		-28.7	%		-29.3	%		-30.2	%		-31.4	%		-32.9	%		-34.7	%		-36.8	%		-39.1	%		-41.7	%		-44.4	%		-47.2	%		-50.2	%
45%		-45	%		-31.0	%		-31.2	%		-31.7	%		-32.6	%		-33.7	%		-35.2	%		-37.0	%		-39.0	%		-41.2	%		-43.7	%		-46.3	%		-49.0	%		-51.9	%
50%		-50	%		-33.3	%		-33.5	%		-34.0	%		-34.8	%		-35.9	%		-37.4	%		-39.1	%		-41.0	%		-43.2	%		-45.6	%		-48.1	%		-50.7	%		-53.5	%
55%		-55	%		-35.5	%		-35.6	%		-36.1	%		-36.9	%		-38.0	%		-39.4	%		-41.0	%		-42.9	%		-45.0	%		-47.3	%		-49.8	%		-52.3	%		-55.0	%
60%		-60	%		-37.5	%		-37.7	%		-38.1	%		-38.9	%		-40.0	%		-41.3	%		-42.9	%		-44.7	%		-46.7	%		-49.0	%		-51.3	%		-53.8	%		-56.4	%


One Year Benchmark Performance	200% Inverse of One Year Benchmark			Benchmark Volatility
One Year Benchmark Performance	Performance			0%			5%			10%			15%			20%			25%			30%			35%			40%			45%			50%			55%			60%
-60%		120	%		525.0	%		520.3	%		506.5	%		484.2	%		454.3	%		418.1	%		377.1	%		332.8	%		286.7	%		240.4	%		195.2	%		152.2	%		112.2	%
-55%		110	%		393.8	%		390.1	%		379.2	%		361.6	%		338.0	%		309.4	%		277.0	%		242.0	%		205.6	%		169.0	%		133.3	%		99.3	%		67.7	%
-50%		100	%		300.0	%		297.0	%		288.2	%		273.9	%		254.8	%		231.6	%		205.4	%		177.0	%		147.5	%		117.9	%		88.9	%		61.4	%		35.8	%
-45%		90	%		230.6	%		228.1	%		220.8	%		209.0	%		193.2	%		174.1	%		152.4	%		128.9	%		104.6	%		80.1	%		56.2	%		33.4	%		12.3	%
-40%		80	%		177.8	%		175.7	%		169.6	%		159.6	%		146.4	%		130.3	%		112.0	%		92.4	%		71.9	%		51.3	%		31.2	%		12.1	%		-5.7	%
-35%		70	%		136.7	%		134.9	%		129.7	%		121.2	%		109.9	%		96.2	%		80.7	%		63.9	%		46.5	%		28.9	%		11.8	%		-4.5	%		-19.6	%
-30%		60	%		104.1	%		102.6	%		98.1	%		90.8	%		81.0	%		69.2	%		55.8	%		41.3	%		26.3	%		11.2	%		-3.6	%		-17.6	%		-30.7	%
-25%		50	%		77.8	%		76.4	%		72.5	%		66.2	%		57.7	%		47.4	%		35.7	%		23.1	%		10.0	%		-3.2	%		-16.0	%		-28.3	%		-39.6	%
-20%		40	%		56.3	%		55.1	%		51.6	%		46.1	%		38.6	%		29.5	%		19.3	%		8.2	%		-3.3	%		-14.9	%		-26.2	%		-36.9	%		-46.9	%
-15%		30	%		38.4	%		37.4	%		34.3	%		29.4	%		22.8	%		14.7	%		5.7	%		-4.2	%		-14.4	%		-24.6	%		-34.6	%		-44.1	%		-53.0	%
-10%		20	%		23.5	%		22.5	%		19.8	%		15.4	%		9.5	%		2.3	%		-5.8	%		-14.5	%		-23.6	%		-32.8	%		-41.7	%		-50.2	%		-58.1	%
- 5%		10	%		10.8	%		10.0	%		7.5	%		3.6	%		-1.7	%		-8.1	%		-15.4	%		-23.3	%		-31.4	%		-39.6	%		-47.7	%		-55.3	%		-62.4	%
0%		0	%		0.0	%		-0.7	%		-3.0	%		-6.5	%		-11.3	%		-17.1	%		-23.7	%		-30.8	%		-38.1	%		-45.5	%		-52.8	%		-59.6	%		-66.0	%
5%		-10	%		-9.3	%		-10.0	%		-12.0	%		-15.2	%		-19.6	%		-24.8	%		-30.8	%		-37.2	%		-43.9	%		-50.6	%		-57.2	%		-63.4	%		-69.2	%
10%		-20	%		-17.4	%		-18.0	%		-19.8	%		-22.7	%		-26.7	%		-31.5	%		-36.9	%		-42.8	%		-48.9	%		-55.0	%		-61.0	%		-66.7	%		-71.9	%
15%		-30	%		-24.4	%		-25.0	%		-26.6	%		-29.3	%		-32.9	%		-37.3	%		-42.3	%		-47.6	%		-53.2	%		-58.8	%		-64.3	%		-69.5	%		-74.3	%
20%		-40	%		-30.6	%		-31.1	%		-32.6	%		-35.1	%		-38.4	%		-42.4	%		-47.0	%		-51.9	%		-57.0	%		-62.2	%		-67.2	%		-72.0	%		-76.4	%
25%		-50	%		-36.0	%		-36.5	%		-37.9	%		-40.2	%		-43.2	%		-46.9	%		-51.1	%		-55.7	%		-60.4	%		-65.1	%		-69.8	%		-74.2	%		-78.3	%
30%		-60	%		-40.8	%		-41.3	%		-42.6	%		-44.7	%		-47.5	%		-50.9	%		-54.8	%		-59.0	%		-63.4	%		-67.8	%		-72.0	%		-76.1	%		-79.9	%
35%		-70	%		-45.1	%		-45.5	%		-46.8	%		-48.7	%		-51.3	%		-54.5	%		-58.1	%		-62.0	%		-66.0	%		-70.1	%		-74.1	%		-77.9	%		-81.4	%
40%		-80	%		-49.0	%		-49.4	%		-50.5	%		-52.3	%		-54.7	%		-57.7	%		-61.1	%		-64.7	%		-68.4	%		-72.2	%		-75.9	%		-79.4	%		-82.7	%
45%		-90	%		-52.4	%		-52.8	%		-53.8	%		-55.5	%		-57.8	%		-60.6	%		-63.7	%		-67.1	%		-70.6	%		-74.1	%		-77.5	%		-80.8	%		-83.8	%
50%		-100	%		-55.6	%		-55.9	%		-56.9	%		-58.5	%		-60.6	%		-63.2	%		-66.1	%		-69.2	%		-72.5	%		-75.8	%		-79.0	%		-82.1	%		-84.9	%
55%		-110	%		-58.4	%		-58.7	%		-59.6	%		-61.1	%		-63.1	%		-65.5	%		-68.2	%		-71.2	%		-74.2	%		-77.3	%		-80.3	%		-83.2	%		-85.9	%
60%		-120	%		-60.9	%		-61.2	%		-62.1	%		-63.5	%		-65.4	%		-67.6	%		-70.2	%		-73.0	%		-75.8	%		-78.7	%		-81.5	%		-84.2	%		-86.7	%


Name of Pool:		ProShares Ultra DJ-UBS Commodity¹
Type of Pool:		Public, Exchange-listed Commodity Pool
Date of Inception of Trading:		November 24, 2008
Aggregate Gross Capital Subscriptions² as of July 31, 2011:		$41,711,516
Aggregate Net Capital Subscriptions³ as of July 31, 2011:		$8,789,691
Net Asset Value as of July 31, 2011:		$16,002,443
Net Asset Value per Share⁴ as of July 31, 2011:		$35.56
Worst Monthly Loss:⁵		-14.51%
		(January 2010)
Worst Peak-to-Valley Loss:⁶		-28.90%
		(Inception – February 2009)


	2008			2009			2010			2011
January					-11.51	%		-14.51	%		1.63	%
February					-9.37	%		6.89	%		2.58	%
March					5.85	%		-2.89	%		4.06	%
April					0.66	%		3.56	%		6.11	%
May					26.77	%		-13.83	%		-10.53	%
June					-4.85	%		0.16	%		-10.87	%
July					5.57	%		13.55	%		6.50	%
August					-1.97	%		-5.36	%
September					2.33	%		14.71	%
October					5.82	%		9.65	%
November		-1.59	%		6.47	%		-1.44	%
December		-9.91	%		3.47	%		22.04	%
Annual		-11.34	%		27.25	%		28.95	%		N/A
Year-to-Date		N/A			N/A			N/A			-2.23	%


Name of Pool:		ProShares UltraShort DJ-UBS Commodity¹
Type of Pool:		Public, Exchange-listed Commodity Pool
Date of Inception of Trading:		November 24, 2008
Aggregate Gross Capital Subscriptions² as of July 31, 2011:		$95,173,240
Aggregate Net Capital Subscriptions³ as of July 31, 2011:		$19,867,303
Net Asset Value as of July 31, 2011:		$11,697,289
Net Asset Value per Share⁴ as of July 31, 2011:		$44.99
Worst Monthly Loss:⁵		-23.20%
		(May 2009)
Worst Peak-to-Valley Loss:⁶		-74.41%
		(February 2009 – April 2011)


Name of Pool:		ProShares Ultra Euro¹
Type of Pool:		Public, Exchange-listed Commodity Pool
Date of Inception of Trading:		November 24, 2008
Aggregate Gross Capital Subscriptions² as of July 31, 2011:		$27,964,079
Aggregate Net Capital Subscriptions³ as of July 31, 2011:		$6,868,400
Net Asset Value as of July 31, 2011:		$8,893,442
Net Asset Value per Share⁴ as of July 31, 2011:		$29.64
Worst Monthly Loss:⁵		-16.10%
		(January 2009)
Worst Peak-to-Valley Loss:⁶		-34.40%
		(November 2009 – June 2010)


Name of Pool:		ProShares Ultra Yen¹
Type of Pool:		Public, Exchange-listed Commodity Pool
Date of Inception of Trading:		November 24, 2008
Aggregate Gross Capital Subscriptions² as of July 31, 2011:		$9,999,181
Aggregate Net Capital Subscriptions³ as of July 31, 2011:		$3,786,887
Net Asset Value as of July 31, 2011:		$5,533,270
Net Asset Value per Share⁴ as of July 31, 2011:		$36.89
Worst Monthly Loss:⁵		-15.60%
		(February 2009)
Worst Peak-to-Valley Loss:⁶		-18.31%
		(January 2009 – March 2009)


	Dollar Amount and Percentage of Expenses per Fund
Expenses¹	ProShares Ultra DJ- UBS Commodity						ProShares Ultra Euro						ProShares Ultra Yen
	$			%			$			%			$			%
Selling price per share		25.00						25.00						25.00
Management fee²		0.24			0.95	%		0.24			0.95	%		0.24			0.95	%
Brokerage commissions and fees⁴		0.00			0.00	%		0.00			0.00	%		0.00			0.00	%
Other expenses⁵		0.00			0.00	%		0.00			0.00	%		0.00			0.00	%
Total fees and expenses		0.24			0.95	%		0.24			0.95	%		0.24			0.95	%
Interest income⁶		(0.01	)		(0.02	)%		(0.01	)		(0.02	)%		(0.01	)		(0.02	)%
Amount of trading income required for the NAV at the end of one year to equal the initial selling price per share (12-Month breakeven)⁷		0.23			0.93	%		0.23			0.93	%		0.23			0.93	%


	Dollar Amount and Percentage of Expenses per Fund
Expenses¹	ProShares UltraShort DJ-UBS Commodity						ProShares Short Gold
	$			%			$			%
Selling price per share		25.00						40.00
Management fee²		0.24			0.95	%		0.37			0.93	%
Offering Costs³		0.00			0.00	%		0.01			0.02	%
Brokerage commissions and fees⁴		0.00			0.00	%		0.01			0.02	%
Other expenses⁵		0.00			0.00	%		0.00			0.00	%
Total fees and expenses		0.24			0.95	%		0.39			0.97	%
Interest income⁶		(0.01	)		(0.02	)%		(0.01	)		(0.02	)%
Amount of trading income required for the NAV at the end of one year to equal the initial selling price per share (12-Month breakeven)⁷		0.23			0.93	%		0.38			0.95	%


	Dollar Amount and Percentage of Expenses per Fund
Expenses¹	ProShares Short DJ-UBS Natural Gas						ProShares UltraShort DJ-UBS Natural Gas
	$			%			$			%
Selling price per share		40.00						40.00
Management fee²		0.36			0.89	%		0.36			0.90	%
Offering Costs³		0.02			0.06	%		0.02			0.05	%
Brokerage commissions and fees⁴		0.05			0.12	%		0.12			0.29	%
Other expenses⁵		0.00			0.00	%		0.00			0.00	%
Total fees and expenses		0.43			1.07	%		0.50			1.24	%
Interest income⁶		(0.01	)		(0.02	)%		(0.01	)		(0.02	)%
Amount of trading income required for the NAV at the end of one year to equal the initial selling price per share (12-Month breakeven)⁷		0.42			1.05	%		0.49			1.22	%