CHICAGO, April 23 /PRNewswire-FirstCall/ -- WHAT: CME 2007 Annual Meeting of Shareholders (CME leaders will be available to the media immediately afterwards) WHEN: Wednesday, April 25, 2007, at 10:00 a.m. Central Time WHERE: Mid-America Club, 200 E. Randolph Drive, 80th floor, Chicago, Illinois TO RSVP: Media representatives who wish to attend should contact CME Corporate Communications at 312-207-2571 or RSVP by e-mail at . All media must check in at the press desk prior to the annual meeting. A live Webcast will be available on the Investor Relations section of CME's Web site, http://www.cme.com/ . An archive of the annual meeting Webcast will also be posted on CME's Web site following the meeting. Chicago Mercantile Exchange Holdings Inc. (NYSE:CMENASDAQ:CME) became the first publicly traded U.S. financial exchange on Dec. 6, 2002. The company was added to the Russell 1000(R) Index on July 1, 2003, and to the S&P 500(R) Index on Aug. 10, 2006. It is the parent company of Chicago Mercantile Exchange Inc. ( http://www.cme.com/ ), the world's largest and most diverse derivatives exchange. As an international marketplace, CME brings together buyers and sellers on the CME Globex(R) electronic trading platform and on its trading floors. CME offers futures and options on futures in these product areas: interest rates, stock indexes, foreign exchange, agricultural commodities, energy, and alternative investment products such as weather, real estate and economic derivatives. CME is a wholly owned subsidiary of Chicago Mercantile Exchange Holdings Inc. (NYSE:CMENASDAQ:CME). Chicago Mercantile Exchange, CME, the globe logo, CME Globex and E-mini are trademarks of Chicago Mercantile Exchange Inc. CLEARING 21 is a registered trademark of CME and New York Mercantile Exchange, Inc. S&P, S&P 500, NASDAQ-100, Nikkei 225, Russell 1000, Russell 2000, 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/ . CME-G DATASOURCE: Chicago Mercantile Exchange Holdings Inc. CONTACT: Media, Anita Liskey, +1-312-466-4613, Allan Schoenberg, +1-312-930-8189, , or Investors, John Peschier, +1-312-930-8491, all of Chicago Mercantile Exchange Holdings Web site: http://www.cme.com/

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