The CME Group, operator of the Chicago Mercantile Exchange, is one of the world's largest traders of derivatives.
VOA: special.2011.02.18
Energy contracts of CMEGroup primarily consist of crude oil, natural gas, power and other energy-related exchange-traded contracts and over-the-counter contracts cleared through CMEGroup ClearPort.
Like the banks, MF Global reported to a patchwork of regulators, from CMEGroup to the Commodity Futures Trading Commission, historically a weak regulator held captive by the futures industry in other words, by CMEGroup ( CME).