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James Crown

Age: 60

Occupation: President, Henry Crown & Co.

The son of billionaire Lester Crown (No. 18) had a rough year. The president of his family’s private investment firm, he also chairs the JPMorgan Chase risk committee responsible for the trading fiasco known as the London Whale, which generated $6 billion in initial losses and, in late 2013, $920 million in fines.