James Dimon tightened his grip on the nation's largest bank on Tuesday as shareholders of JPMorgan Chase & Co. overwhelmingly endorsed his dual role as chairman and chief executive, the Wall Street Journal reported today. A year after a multibillion-dollar trading fiasco tainted Dimon's reputation as Wall Street's best risk manager, just 32.2 percent of shareholders voted for a resolution to split the two positions. That was well below the 40.1 percent who voted to do so a year ago.
