JPMorgan CEO Jamie Dimon: We were 'dead wrong' to dismiss trading concerns The CEO of JPMorgan Chase said the bank reacted badly to warning flags last month that it had large trading losses in complex financial derivatives and he was "dead wrong" when he initially dismissed the concerns. "We made a terrible, egregious mistake," Jamie Dimon said in an interview broadcast Sunday on NBC's "Meet The Press." There's almost no excuse for it. Dimon said he did not know the extent of the problem when he said in April that the trading concerns were a "tempest in a teapot." On Thursday, the bank disclosed $2 billion in trading losses over the past six weeks. Investors shaved almost 10 percent off JPMorgan's stock price the next day. We got very defensive. And people started justifying everything we did," Dimon said. We told you something that was completely wrong a mere four weeks ago. NYT: JPMorgan lobbied for big loophole on risky trading In the interview, Dimon said that while mistakes revealed in the past week were "bad," they did not jeopardize JPMorgan Chase. Dimon told NBC that he supported giving the government the authority to dismantle a failing big bank and wipe out shareholder equity. But he stressed that JPMorgan, the largest bank in the United States, is "very strong." Dimon said that JPMorgan was "sloppy" and "stupid," but added he didn't know if his firm broke any laws or Securities and Exchange Commission rules. "You always make mistakes," Dimon said.