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)

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)