JPMorgan's Jamie Dimon shuffles top management in potential stage-setting move for a successor

JPMorgan Chase & Co. Chief Executive Jamie Dimon has announced a major series of promotions and title changes with a potential successor among them to run the U.S.’s largest bank.JPMorgan JPM, +1.43% summed up the changes as “new and increased responsibilities for a number of key executives that will build upon the company’s successes and continue to position the firm for the future.”JPMorgan Chase’s stock rose 0.4% in premarket trading on Friday. Among the moves, Jennifer Piepszak will be co-chief executi ...