CME Group is a combined entity formed by the 2007 merger of the Chicago Mercantile Exchange (CME) and the Chicago Board of Trade (CBOT). We bring more than 250 years of exchange expertise to the global marketplace, and we are the largest and most diverse financial exchange in the world for trading futures and options. The combined volume of CME and CBOT in 2006 exceeded 2.2 billion contracts, worth more than $1,000 trillion. Three quarters of our trades are made electronically.