J.P. Morgan Chase JPM +0.25% & Co. has taken $2 billion in trading losses in the past six weeks and could face an additional $1 billion in second-quarter losses due to market volatility, Chief Executive James Dimon said Thursday in a hastily arranged conference call after the market closed.
The losses stemmed from derivatives bets gone wrong in the bank's Chief Investment Office, a part of the corporate branch of the bank that manages risk for the New York company. The Wall Street Journal reported last month that large bets being made in that office had roiled a sector of the debt markets.
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