CME Group Inc. Announces Date of Second-Quarter 2009 Earnings Release, Conference Call

CHICAGO, May 28 /PRNewswire-FirstCall/ -- CME Group Inc. will announce earnings for the second quarter of 2009 before the financial markets open on Thursday, July 23, 2009. The company has scheduled an investor conference call that day at 7:30 a.m. Central time.

A live audio Webcast of the conference call will be available on the Investor Relations section of the company's Web site, http://www.cmegroup.com/. Following the conference call, an archived recording will be available at the same site. Those wishing to listen to the live conference via telephone should dial [phone] if calling from within the United States or [phone] if calling from outside the United States, at least 10 minutes before the call begins.

CME Group (http://www.cmegroup.com/) is the world's largest and most diverse derivatives exchange. Building on the heritage of CME, CBOT and NYMEX, 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 trading floors in Chicago and New York. By acting as the buyer to every seller and the seller to every buyer, CME Clearing virtually eliminates counterparty credit risk CME Clearing also offers $7 billion in financial safeguards to help mitigate systemic risk, providing the security and confidence market participants need to operate, invest and grow. 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, energy, agricultural commodities, metals, and alternative investment products such as weather and real estate. CME Group is listed on NASDAQ 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. NYMEX, New York Mercantile Exchange, and ClearPort are trademarks of New York Mercantile Exchange. Inc. COMEX is a trademark of Commodity Exchange, Inc. 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

CME Group Inc.

CONTACT: Media, Anita Liskey, [phone], or William Parke,
[phone], [e-mail], or Investors, John Peschier,
[phone], all of CME Group

Web Site: http://www.cmegroup.com/