News Release

CME and Merrill Lynch Launch PIMCO TRAKRS

Thu Jun 29 2006

CHICAGO, June 29 /PRNewswire-FirstCall/ -- CME, the world's largest and most diverse financial exchange, announced today the successful launch of the PIMCO® CommodityRealReturn(SM) DJ-AIGCI(SM) TRAKRS® product, the eleventh in a series of non-traditional futures products developed jointly with Merrill Lynch (NYSE: MER).

In a special opening procedure concluded on Wednesday, June 28, nearly 17 million contracts representing more than $424 million in value were traded. The PIMCO CRR TRAKRS start their regular trading schedule today and will trade Monday - Friday from 8:30 a.m. to 3:00 p.m. Central time on the CME® Globex® electronic trading platform.

PIMCO CRR TRAKRS futures are non-traditional futures contracts designed to provide investors with an effective way to gain exposure to the Dow Jones-AIG Commodity Index®, enhanced by an index of qualified separate accounts invested in exempt securities and other instruments actively managed by Pacific Investment Management Company LLC (PIMCO).

TRAKRS, or Total Return Asset Contracts, are designed to enable investors to track an index of stocks, bonds, currencies, commodities or other financial instruments. Outstanding TRAKRS offerings include Long-Short Technology TRAKRS II, Commodity TRAKRS, Euro Currency TRAKRS, Gold TRAKRS, Rogers International Commodity Index TRAKRS, LMC II TRAKRS and BXY TRAKRS. TRAKRS are the first broad-based index products traded on a U.S. futures exchange that can be sold by securities brokers. Furthermore, when purchased by non- institutional investors, they are the first futures contracts that can be held in securities accounts. Each TRAKRS contract, for which CME receives significantly lower than usual clearing fees, has a notional value of approximately $25 at launch.

TRAKRS differ from traditional futures contracts in that they are not leveraged for most long non-institutional investors, who are required to post 100 percent of the TRAKRS market value at the time of purchase. As a result, non-institutional investors establishing long TRAKRS positions will not be subject to margin calls or any requirement to make any additional payments throughout the life of their TRAKRS positions. Non-institutional investors establishing short TRAKRS positions post 50 percent of the price. Short positions held by non-institutional investors are subject to certain maintenance payments if the settlement price increases substantially. Alternatively, if the settlement price decreases significantly, non- institutional investors will receive a maintenance payment. Securities brokers, subject to notice registering with the National Futures Association, are able to solicit trades in TRAKRS from non-institutional investors.

For more information on this product, please visit: http://www.cme.com/trading/prd/overview_P318343.html

About Merrill Lynch

Merrill Lynch is one of the world's leading wealth management, capital markets and advisory companies, with offices in 36 countries and territories and total client assets of approximately $1.8 trillion. As an investment bank, it is a leading global trader and underwriter of securities and derivatives across a broad range of asset classes and serves as a strategic advisor to corporations, governments, institutions and individuals worldwide. Through Merrill Lynch Investment Managers, the company is one of the world's largest managers of financial assets. Firmwide, assets under management total $544 billion. For more information on Merrill Lynch, please visit http://www.ml.com/ .

About CME

Chicago Mercantile Exchange Inc. ( http://www.cme.com/ ) is the world's largest and most diverse financial exchange. As an international marketplace, CME brings together buyers and sellers on CME Globex electronic trading platform and on its trading floors. CME offers futures and options on futures primarily in four product areas: interest rates, stock indexes, foreign exchange and commodities. The exchange managed $47.0 billion in collateral deposits at March 31, 2006, including $3.8 billion in deposits for non-CME products. CME is a wholly owned subsidiary of Chicago Mercantile Exchange Holdings Inc. (NYSE: CME)(NASDAQ: CME), which is part of the Russell 1000® Index.

Statements in this news release that are not historical facts are forward- looking statements. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or implied in any forward-looking statements. More detailed information about factors that may affect our performance may be found in our filings with the Securities and Exchange Commission, including our most recent Quarterly Report on Form 10-Q, which can be obtained at its Web site at http://www.sec.gov/ . We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

Chicago Mercantile Exchange, CME, the globe logo and CME Globex are registered trademarks of Chicago Mercantile Exchange Inc. E-mini is a trademark of CME. TRAKRS, Total Return Asset Contracts and other trade names, service marks, trademarks and registered trademarks that are not proprietary to Chicago Mercantile Exchange Inc. are the property of their respective owners, and are used herein under license. Further information about CME and its products is available on the CME Web site at http://www.cme.com/ .

"PIMCO" and "CommodityRealReturn" are service marks of Allianz Global Investors of America L.P. ("AGI LP") and Pacific Investment Management Company LLC.

"Dow Jones," "AIG®" "Dow Jones-AIG Commodity Index(SM)," "Dow Jones-AIG Commodity Index Total Return(SM)," "DJ-AIGCI(SM)" and "DJ-AIGCITR(SM)" are service marks of Dow Jones & Company, Inc. and American International Group, Inc. (AIG), as the case may be, and have been licensed for use for certain purposes by Merrill Lynch and CME. PIMCO CommodityRealReturn DJ-AIGCI TRAKRS(SM) based on the Dow Jones-AIG Commodity Index Total Return(SM), are not sponsored, endorsed, or promoted by Dow Jones, AIG Financial Products Corp. (AIG-FP), AIG, or any of their respective subsidiaries or affiliates, and none of Dow Jones, AIG-FP, AIG, or any of their respective subsidiaries or affiliates, makes any representation regarding the advisability of investing in such product.

CME-G

SOURCE: Chicago Mercantile Exchange Inc.

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