ProShares, a premier provider of alternative exchange traded funds (ETFs), today announced the launch of two new ETFs that provide inverse exposure to the U.S. Treasury market.

The ProShares UltraShort 3-7 Year Treasury (NYSE: TBZ) is the first ETF in the United States to provide inverse exposure to the 3-7 year segment of the U.S. Treasury market. TBZ seeks to provide -2x the daily performance of the Barclays Capital U.S. 3-7 Year Treasury Bond Index, before fees and expenses. The ProShares Short 7-10 Year Treasury (NYSE: TBX) seeks to provide -1x the daily performance of the Barclays Capital U.S. 7-10 Year Treasury Bond Index, before fees and expenses. Both ETFs list on NYSE Arca today.

“Our lineup of inverse bond ETFs has been extremely popular, garnering more than $7 billion of assets since launching less than three years ago,” said Michael L. Sapir, Chairman and CEO of ProShare Advisors LLC, ProShares' investment advisor. “We are pleased to add two additional ETFs to the set of tools available to investors concerned about a possible pullback in bonds.”

TBZ and TBX bring ProShares’ lineup of inverse bond ETFs to eight. Six of the eight ETFs are benchmarked to a Treasury bond index. One is benchmarked to a high yield bond index (NYSE: SJB) and one to an investment grade bond index (NYSE: IGS). SJB and IGS both launched in the past two weeks.
ProShares   Ticker Symbol   Index   Daily Objective*
New Inverse Bond ETFs            
UltraShort 3-7 Year Treasury   TBZ   Barclays Capital U.S. 3-7 Year Treasury Bond Index   -2x
Short 7-10 Year Treasury   TBX   Barclays Capital U.S. 7-10 Year Treasury Bond Index   -1x
Existing Inverse Bond ETFs            
UltraShort 20+ Year Treasury   TBT   Barclays Capital U.S. 20+ Year Treasury Bond Index   -2x
Short 20+ Year Treasury   TBF   Barclays Capital U.S. 20+ Year Treasury Bond Index   -1x
UltraShort 7-10 Year Treasury   PST   Barclays Capital U.S. 7-10 Year Treasury Bond Index   -2x

UltraShort TIPS
  TPS   Barclays Capital U.S. Treasury Inflation Protected

Securities (TIPS) Index (Series-L)
  -2x
Short High Yield   SJB   Markit iBoxx $ Liquid High Yield Index   -1x
Short Investment Grade Corporate   IGS   Markit iBoxx $ Liquid Investment Grade Index   -1x

* Before fees and expenses

About ProShares

ProShares is a premier provider of alternative ETFs, with 119 funds and more than $26 billion in assets. ProShares offers the largest family of geared (leveraged and inverse) ETFs. 1 ProShares is part of ProFunds Group, which was founded in 1997 and includes more than $32 billion in mutual fund and ETF assets. 2

1 Source: Lipper, based on a worldwide analysis of all of the known providers of funds in these categories. The analysis covered ETFs, ETNs and mutual funds by the number of funds and assets as of 6/30/2010.

2 Assets as of 3/11/2011.

Leveraged and inverse ProShares and ProFunds seek returns that are multiples or inverse multiples (e.g., 2x, -2x) of the return of an index or other benchmark (target) for a single day. Due to the compounding of daily returns, leveraged and inverse ProShares’ and 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 their holdings consistent with their strategies, as frequently as daily, and rebalance if necessary. A rebalancing strategy involves transaction costs and may have tax consequences.

Disclosure:

Investing involves risk, including the possible loss of principal. ProShares and ProFunds are non-diversified and entail certain risks, including risk associated with the use of derivatives (swap agreements, futures contracts and similar instruments), imperfect benchmark correlation, leverage and market price variance, all of which can increase volatility and decrease performance. Bond values will fall when interest rates rise. High yield bonds may involve greater levels of interest rate, credit, liquidity and valuation risk than for higher-rated instruments. Short and UltraShort ProShares and ProFunds should lose money when their benchmarks or indexes rise. See the prospectus for a more complete description of risks. There is no guarantee any ProShares ETF or ProFund 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 summary and full prospectuses. Read them carefully before investing. Obtain them at www.proshares.com or www.profunds.com .

ProShares Treasury ETFs are benchmarked to Barclays Capital indexes. Barclays Capital and Barclays Capital Inc. are trademarks of Barclays Capital Inc. ProShares Short High Yield and Short Investment Grade Corporate ETFs are benchmarked to iBoxx® indexes. iBoxx is a registered trademark of Markit Indices Limited. All have been licensed for use by ProShares. ProShares have not been passed on by these entities or their affiliates as to their legality or suitability. ProShares are not sponsored, endorsed, sold, or promoted by these entities or their 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 mutual funds are distributed by ProFunds Distributors, Inc.

ProShares are distributed by SEI Investments Distribution Co., which is not affiliated with ProShare Advisors.

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