CME Group Inc., formerly Chicago Mercantile Exchange Holdings Inc., offers a range of products available across all asset classes, including futures and options on futures based on interest rates, equity indexes, foreign exchange, agricultural commodities and alternative investments, such as weather and real estate. The Company is the holding company for Chicago Mercantile Exchange Inc. (CME), Board of Trade of the City of Chicago, Inc. (CBOT) and their subsidiaries. During the year ended December 31, 2007, the combined volume of CME and CBOT exceeded 2.2 billion contracts. As of December 31, 2007, the Company's open interest stood at 54 million contracts and its open interest record was 75.2 million contracts set on August 9, 2007. The Company's CME Globex electronic trading platform is accessible around the clock. In January 2008, the Company completed the integration of CBOT's interest rate, equity and agricultural electronic products on to CME Globex.