ProShares Launches First Inverse Investment Grade Corporate Bond ETF

							ProShares Launches First Inverse Investment
Grade Corporate Bond ETF
Expands Lineup of Inverse Bond ETFs to Six

March 29, 2011 09:33 AM Eastern Daylight Time 

BETHESDA, Md.--(EON: Enhanced Online News)--ProShares, a premier provider of alternative exchange traded
funds (ETFs), today announced the launch of the first ETF in the United States that provides inverse exposure to the
investment grade corporate bond market.

The ProShares Short Investment Grade Corporate (NYSE: IGS) seeks to provide -1x the daily performance of the
Markit iBoxx® $ Liquid Investment Grade Index, before fees and expenses. The ETF lists on NYSE Arca today.

“There are signs that investment grade corporate bonds could possibly be richly valued relative to historical levels.
Since the financial crisis, investment grade corporate bond indexes have reached record highs1, and credit spreads
have tightened significantly,” said Michael L. Sapir, Chairman and CEO of ProShare Advisors LLC, ProShares'
investment advisor. “For investors who believe that investment grade corporates could come under pressure, IGS
can be used to help hedge against or to seek to benefit from potential declines.” 

IGS expands ProShares’ popular lineup of inverse bond ETFs to six. ProShares’ four inverse Treasury bond ETFs
have garnered more than $7 billion of assets since launching less than three years ago. The firm launched its fifth
inverse bond fund, ProShares Short High Yield (NYSE: SJB), last week.

                                  Ticker                                                            Daily
ProShares                                          Index
                                  Symbol                                                            Objective*
New Inverse Bond ETF
Short Investment Grade
                           IGS                     Markit iBoxx $ Liquid Investment Grade Index -1x
Corporate
Existing Inverse Bond ETFs
Short High Yield           SJB                     Markit iBoxx $ Liquid High Yield Index           -1x
                                                   Barclays Capital 20+ Year U.S. Treasury
UltraShort 20+ Year Treasury      TBT                                                               -2x
                                                   Index
                                                   Barclays Capital 7-10 Year U.S. Treasury
UltraShort 7-10 Year Treasury PST                                                                   -2x
                                                   Index
                                                   Barclays Capital U.S. Treasury Inflation
                                                   Protected
UltraShort TIPS                   TPS                                                               -2x
                                                   Securities (TIPS) Index (Series-L)
                                                   Barclays Capital 20+ Year U.S. Treasury
Short 20+ Year Treasury           TBF                                                               -1x
                                                   Index

* Before fees and expenses

1
    Merrill Lynch’s U.S. Corporate Master Index and Markit iBoxx $ Liquid Investment Grade Index

About ProShares

ProShares is a premier provider of alternative ETFs, with 117 funds and more than $26 billion in assets. ProShares
offers the largest family of geared (leveraged and inverse) ETFs2. ProShares is part of ProFunds Group, which was
founded in 1997 and includes more than $32 billion in mutual fund and ETF assets3.

2 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.

3
    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. Short 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.

The Markit iBoxx $ Liquid Investment Grade Index is a modified market-value weighted index designed to provide
a balanced representation of U.S. dollar-denominated investment grade corporate bonds publicly offered in the
United States by means of including the most liquid investment grade corporate bonds available as determined by the
index provider. iBoxx® is a registered trademark of Markit Indices Limited and has been licensed for use by
ProShares. Markit does not approve, endorse or recommend ProShares or ProShares Short Investment Grade
Corporate, and makes no representation regarding the suitability of investing in ProShares Short Investment Grade
Corporate.

"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 ProFunds Group or its
affiliates.

Contacts
Media:
Hewes Communications, Inc.
Tucker Hewes, 212-207-9451
tucker@hewescomm.com
or
Investor:
ProShares, 866-776-5125
www.ProShares.com