MF Global, formerly known as Man Financial, was a major global financial derivatives broker, or commodities brokerage firm that went bankrupt in 2011. MF Global provided exchange-traded derivatives, such as futures and options as well as over-the-counter products such as contracts for difference (CFDs), foreign exchange and spread betting. MF Global Inc., its broker-dealer subsidiary, was a primary dealer in United States Treasury securities. A series of perceived liquidity problems and large fines and penalties dogged MF Global starting in 2008, and led to its bankruptcy in 2011.