News Release

CME Group Revised Labor Day Holiday Hours for NYMEX Energy Products

Fri Aug 29 2008

NEW YORK and CHICAGO, Aug. 29 /PRNewswire-FirstCall/ -- In response to concerns about Hurricane Gustav, CME Group, the world's largest and most diverse derivatives exchange, today announced that it has revised its Labor Day holiday trading schedule (all times are Eastern time) for NYMEX energy products. On Sunday, August 31, all NYMEX energy products trading on the CME Globex® electronic trading platform will open for trading at 2:30 p.m. (Eastern), with a 2:00 p.m. (Eastern) pre-opening, for a September 2, 2008, trade date. NYMEX ClearPort® Clearing and NYMEX ClearPort® Trading will also now re-open for trading on this schedule on Sunday, August 31.

"We wanted to provide our customers with the opportunity to respond to the storm's potential impact to energy markets as quickly as possible," said CME Group Chief Operating Officer Bryan Durkin. "The ability to trade both our exchange-listed and over-the-counter energy products during this period will be a significant benefit for global energy market participants."

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. 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

SOURCE: CME Group

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