ProShares, creator and market leader in short and leveraged exchange traded funds, announced the introduction of another innovative exchange traded fund, the nation’s first 130/30 ETF. ProShares Credit Suisse 130/30 (Ticker: CSM) will be listed on NYSE Arca today.

The new ETF is the first of a new category of ProShares ETFs: Alpha ProShares. Alpha ProShares are designed to provide advanced investment strategies to investors—in the form of ETFs.

ProShares Credit Suisse 130/30 seeks to track the Credit Suisse 130/30 Large-Cap Index (before fees and expenses). The index was introduced in 2007 by Credit Suisse in collaboration with AlphaSimplex Group.

The index was designed by Dr. Andrew Lo, in collaboration with Mr. Pankaj Patel, CFA. Dr. Lo is Chairman and Chief Scientific Officer of AlphaSimplex Group and Harris & Harris Group Professor at the MIT Sloan School of Management. Mr. Patel is Director of Quantitative Research at Credit Suisse.

Dr. Lo and Mr. Patel described the underlying principles of this quantitative-based index in their award-winning 2008 paper, "130/30: The New Long-Only,” in The Journal of Portfolio Management.¹

"We believe that this new ETF will be attractive for investors’ 130/30 allocations because it combines a rigorous quantitative investment process developed by two renowned experts with the index transparency, low cost and liquidity of an ETF,” said Mr. Michael L. Sapir, ProShares Chairman and CEO.

"Working with Pankaj Patel and the team at Credit Suisse, we’ve developed a 130/30 index which is transparent, investable and passive—the key attributes needed to drive an index-based 130/30 investment strategy,” said Professor Lo. Mr. Patel of Credit Suisse added, "The quantitative model behind our 130/30 Large-Cap index is based on extensive, robust research on the real-world factors contributing to stock performance.”

About ProShares

ProShares is part of ProFunds Group, the largest manager of short and leveraged funds.² The group includes 89 ProShares ETFs and 115 ProFunds mutual funds. ProShares, which introduced the first short and leveraged ETFs in 2006, continues to be a leader in launching innovative new products—for two years in a row, ProShares has led the industry in attracting assets to newly launched ETFs³ and now is the fourth largest manager of ETFs in the nation.⁴ Since 1997, ProFunds mutual funds have provided investors with access to sophisticated investment strategies, with offerings that include funds that seek to magnify or return the inverse of index performance on a daily basis. The group also manages the Canada-based Horizons BetaPro ETFs.

Most ProShares ETFs and many ProFunds employ leveraged investment techniques that magnify gains and losses and result in greater volatility in value. Each Short or Ultra ProShares ETF and leveraged or inverse ProFund seeks a return that is a multiple or inverse multiple (e.g., -200%) of the return of an index or other benchmark (target) for a single day. Due to the compounding of daily returns, ProShares’ and leveraged and inverse ProFunds’ returns over periods other than one day will likely differ in amount and possibly direction from the target return for the same period. Investors should monitor holdings consistent with their strategies, as frequently as daily. For more on correlation, leverage and other risks, please read the ProShares or ProFunds prospectus.

About Credit Suisse

As one of the world’s leading banks, Credit Suisse provides its clients with investment banking, private banking and asset management services worldwide. Credit Suisse offers advisory services, comprehensive solutions and innovative products to companies, institutional clients and high-net-worth private clients globally, as well as retail clients in Switzerland. Credit Suisse is active in over 50 countries and employs approximately 45,000 people. Credit Suisse’s parent company, Credit Suisse Group, is a leading global financial services company headquartered in Zurich. Credit Suisse Group’s registered shares (CSGN) are listed in Switzerland and, in the form of American Depositary Shares (CS), in New York. Further information about Credit Suisse can be found at www.credit-suisse.com.

About AlphaSimplex Group

AlphaSimplex Group offers both alpha-generation and beta-capture strategies, including quantitative global macro, global tactical asset allocation, beta replication and beta hedging strategies. Through its risk analytics division it also offers absolute return risk analytics and custom indexes. AlphaSimplex was founded in 1999 by Dr. Andrew W. Lo, a professor of finance at the MIT Sloan School of Management and a pioneer in the field of beta replication for absolute return strategies. Dr. Lo has published numerous articles in finance and economics journals, and is author of The Econometrics of Financial Markets, A Non-Random Walk Down Wall Street and Hedge Funds: An Analytic Perspective.

All investing involves risk, including the loss of principal. ProShares entail certain risks, including, in some or all cases, aggressive investment techniques (futures contracts, options, forward contracts, swap agreements and similar instruments), correlation or inverse correlation, and market price variance risk, all of which can increase volatility and decrease performance. In addition, ProShares are non-diversified, and narrowly focused investments typically exhibit higher volatility. There is no guarantee that any ProShares ETF will achieve its investment objective.

Carefully consider the investment objectives, risks, charges and expenses of ProShares and ProFunds before investing. This and other information can be found in their prospectuses. Read the prospectus(es) carefully before investing. For a ProShares ETF prospectus, visit www.proshares.com and seek advice from your financial adviser or broker/dealer representative. Financial professionals can also call 866-PRO-5125. For a ProFunds mutual fund prospectus, call 888-PRO-FNDS (individual investors) or 888-PRO-5717 (financial professionals), or visit www.profunds.com. Read the prospectus(es) carefully before investing.

"Credit Suisse” and "Credit Suisse 130/30 Large-Cap Index^TM,” are trademarks of Credit Suisse Securities (USA) LLC or one of its affiliates and have been licensed for use by ProShares. ProShares have not been passed on by Credit Suisse or its affiliates as to their legality or suitability. ProShares are not sponsored, endorsed, sold, or promoted by Credit Suisse or its affiliates, and they make no representation regarding the advisability of investing in ProShares. THESE ENTITIES AND THEIR AFFILIATES MAKE NO WARRANTIES AND BEAR NO LIABILITY WITH RESPECT TO PROSHARES.

ProFunds Group includes ProFunds mutual funds and ProShares ETFs. ProFunds Distributors, Inc., is distributor for ProFunds mutual funds. ProShares ETFs registered under the Investment Company Act of 1940 are distributed by SEI Investments Distribution Co., which is not affiliated with ProFunds Group or its affiliates.

¹ Lo, Andrew W., and Patel, Pankaj N., "130/30: The New Long-Only.” The Journal of Portfolio Management, Winter 2008.

² Source: Lipper, based on a worldwide analysis of all of the known providers of publicly traded funds in these categories. The analysis covered ETFs, ETNs, and mutual funds by the number of funds and assets (as of 6/30/2008).

³ Citigroup ETF Flow Report, based on an analysis of ETPs introduced in 2007 and 2008.

⁴ Source: Bloomberg, based on assets for 5/29/2009.