CEO, Asset Management
JP Morgan Chase
2011 rank: 24
Age: 45
J.P. Morgan lost nearly $6 billion (and counting) on bad bets by the �London Whale,� but Erdoes's division made money by taking the other side of the trades. Revenue for her business climbed 6%, to $9.5 billion, last year, and Erdoes's assets grew to $2 trillion, a new high.