News Release

CME Group Chief Executive Officer to Present at William Blair Growth Stock Conference, June 17

Mon Jun 16 2008

CHICAGO, June 16 /PRNewswire-FirstCall/ -- CME Group (NYSE: CME)(NASDAQ: CME) announced today that Chief Executive Officer Craig Donohue will present at the William Blair Growth Stock Conference, to be held in Chicago, on Tuesday, June 17, 2008, at 1:00 p.m. (Central Time).

The presentation will be broadcast live over the Internet and can be accessed via the exchange's web site at http://investor.cmegroup.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. Accompanying slides will also be available at the same location. An audio Webcast will be available for replay at the same address approximately 24 hours following the conclusion of the conference.

CME Group (http://www.cmegroup.com/) is the world's largest and most diverse exchange. Formed by the 2007 merger of the Chicago Mercantile Exchange Holdings and CBOT Holdings, CME Group serves the risk management needs of customers around the globe. As an international marketplace, CME Group brings buyers and sellers together on the CME Globex electronic trading platform and on its trading floors. CME Group offers the widest range of benchmark products available across all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, agricultural commodities and alternative investment products such as weather and real estate. CME Group's Class A common stock is traded on the New York Stock Exchange and the Nasdaq Global Select Market under the symbol "CME."

The Globe logo, CME, Chicago Mercantile Exchange, CME Group, Globex and E- mini, are trademarks of Chicago Mercantile Exchange Inc. CBOT and Chicago Board of Trade are trademarks of the Board of Trade of the City of Chicago. All other trademarks are the property of their respective owners. Further information about CME Group and its products can be found at http://www.cmegroup.com/.

CME-G

SOURCE: CME Group

CONTACT: Media, Anita Liskey, +1-312-466-4613, or William Parke,
+1-312-930-3467, both at news@cmegroup.com, or Investors, John Peschier,
+1-312-930-8491, all of CME Group

Web site: http://www.cmegroup.com/
http://www.cmegroup.mediaroom.com/
http://investor.cmegroup.com/

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