James Dimon

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JPMorgan Chase CEO Jamie Dimon, head of the largest bank in the United States, prepares to testify June 13, 2012, on Capitol Hill before the Senate Banking Committee about how his company recently lost more than $2 billion on risky trades and whether its executives failed to properly manage those risks. (Associated Press)

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Hillsborough Sheriff deputy patrols outside the gate of JP Morgan Chase annual stockholders meeting held May 15, 2012, in Tampa, Fla. JPMorgan Chase CEO Jamie Dimon was scheduled speak to shareholders at the meeting, five days after disclosing a $2 billion trading loss. (Associated Press)

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** FILE ** In this Oct. 27, 2009, file photo, James Dimon, chairman and CEO of JP Morgan Chase & Co., speaks in New York. (AP Photo/Mark Lennihan, File)

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JPMorgan Chase & Co. stock fell 6 percent Thursday after CEO Jamie Dimon announced a $2 billion loss in a trading portfolio designed to hedge against risks. "There were many errors, sloppiness and bad judgment," Mr. Dimon said. (Associated Press)

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Protesters affiliated with "Occupy Wall Street" wave signs and banners outside 1185 Park Avenue, where Jamie Dimon, CEO of JP Morgan Chase, lives, during a march in New York on Tuesday. The crowd marched throughout the Upper East Side neighborhood, protesting outside the homes of various billionaires and bank owners. (Associated Press)