CHICAGO, June 5 /PRNewswire-FirstCall/ -- CME Group, the world's largest and most diverse derivatives exchange, announced today that electronic trading hours for the CBOT grains, oilseeds and ethanol contracts will be expanded in the morning by one hour and fifteen minutes, until 7:15 a.m., beginning July 1. The new electronic trading hours will run from 6:00 p.m. to 7:15 a.m. Chicago time Sunday through Friday for futures and options on futures for full and mini-size where offered corn, wheat, soybeans, soymeal, soyoil, rice, oats and ethanol contracts. Daytime electronic and open outcry hours will remain from 9:30 a.m. to 1:15 p.m. weekdays. 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 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, E-mini and CME ClearPort 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 and New York Mercantile Exchange 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 DATASOURCE: CME Group CONTACT: Media, Mary Haffenberg, +1-312-930-3435, or Allan Schoenberg, +1-312-930-8189, , or Investors, John Peschier, +1-312-930-8491, all of CME Group Web Site: http://www.cmegroup.com/

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