CHICAGO, Sept. 29 /PRNewswire-FirstCall/ -- CME Group, the world's largest and most diverse derivatives marketplace, today announced the implementation of variable storage rates for the CBOT Wheat futures contract, the world benchmark for wheat prices, beginning with the September 2010 contract expiration. These contracts are listed with, and subject to, the rules and regulations of the CBOT. CME Group staff will monitor the September 2010/December 2010 wheat spreads immediately following the conclusion of the July 2010 contract delivery period. Based on market prices, the first variable storage rate could be implemented September 18, 2010. The variable storage rates will replace the seasonal storages rates. As the world's largest and most diverse derivatives marketplace, CME Group (http://www.cmegroup.com/) is where the world comes to manage risk. CME Group exchanges offer the widest range of global benchmark products across all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, energy, agricultural commodities, metals, weather and real estate. CME Group brings buyers and sellers together through its CME Globex® electronic trading platform and its trading facilities in New York and Chicago. CME Group also operates CME Clearing, one of the largest central counterparty clearing services in the world, which provides clearing and settlement services for exchange-traded contracts, as well as for over-the-counter derivatives transactions through CME ClearPort®. These products and services ensure that businesses everywhere can substantially mitigate counterparty credit risk in both listed and over-the-counter derivatives markets. 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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