CME Group Inc., formerly Chicago Mercantile Exchange Holdings Inc., offers access to asset classes from a single electronic trading platform and trading floors in Chicago and New York City. The Company offers futures and options on futures based on interest rates, equity indexes, foreign exchange, energy, agricultural commodities, metals, and alternative investment products, such as weather and real estate. During the year ended December 31, 2008, the combined volume of CME and CBOT and NYMEX was approximately three billion contracts. As of December 31, 2008, the Company’s open interest stood at 63 million contracts and its open interest record was 86.1 million contracts set on September 11, 2008. In March 2008, the Company acquired Credit Market Analysis Limited. On August 22, 2008, the Company completed its merger with NYMEX Holdings, Inc. In April 2009, the Company acquired the Carvill Hurricane Index from Carvill America Inc. and renamed it the CME Hurricane Index.