News Release

Chicago Mercantile Exchange Holdings CEO and CFO to Present at Keefe, Bruyette & Woods Conference

Tue Nov 01 2005

CHICAGO, Nov. 1 /PRNewswire-FirstCall/ -- Chicago Mercantile Exchange Holdings Inc. (NYSE: CME)(NASDAQ: CME) announced today that Chief Executive Officer Craig S. Donohue and Chief Financial Officer James E. Parisi will present at the Keefe, Bruyette & Woods Securities Brokerage Conference in New York City on Thursday, November 3, 2005, at approximately 4:00 p.m. (Eastern Time).

The presentation will be broadcast live over the Internet and can be accessed via the exchange's web site at http://investor.cme.com/ . Please allow extra time prior to the presentation to visit the site and download the streaming media software required to listen to the Internet broadcast.

Chicago Mercantile Exchange Inc. ( http://www.cme.com/ ) is the largest futures exchange in the United States. 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 moved about $1.4 billion per day in settlement payments in the first three quarters of 2005 and managed $43.8 billion in collateral deposits at September 30, 2005, 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.

Chicago Mercantile Exchange, CME and Globex are registered trademarks of Chicago Mercantile Exchange Inc. 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/ .

CME-G

SOURCE: Chicago Mercantile Exchange Holdings Inc.

CONTACT: Media, Anita Liskey, +1-312-466-4613, Bill Parke,
+1-312-930-3467, news@cme.com , Investors, John Peschier, +1-312-930-8491, all
of Chicago Mercantile Exchange Holdings Inc.

Web site: http://investor.cme.com/
http://www.cme.com/

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