#8: MF Global Holdings
Jon Corzine, a former Goldman Sachs co-CEO and former governor of New Jersey, was appointed CEO in March 2010 with the aim of transforming the broker into an investment bank. On Oct. 25, 2011 MF Global reported a $191.6 million quarterly loss as a result of trading on European government bonds and its debt was downgraded to junk status.
Bankruptcy filing: Oct. 31, 2011
Assets: $40.5 billion