J.P. Morgan Chase & Co.
jp morgan building
Fortune 500 rank: 18
2012 profit (millions): 21,284

It was a year of records and reckoning for J.P. Morgan Chase. The bank's highest annual profit ever was tainted by the $6.2 billion "London Whale" trading loss on risky bets. The scandal also cut into CEO Jamie Dimon's bottom line when the board hit him with a 50% pay cut. But as Mr. Dimon likes to say: Life goes on. 2012 marked strong results across all of J.P. Morgan's units. Until interest rates finally rise from rock-bottom levels, however, the bank will continue to get pinched on the profit it makes off its loans.--T.Z.

  @FortuneMagazine - Last updated May 07 2013 04:40 PM ET
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Wal-Mart retook the top spot, Berkshire Hathaway made the top five, and Apple grew enormously.

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