JPMorgan Chase has made some changes to its leadership. Two investment bankers, Doug Petno and Troy Rohrbaugh, have been promoted to copresidents of the bank. This move is seen as setting up potential successors to the current CEO, Jamie Dimon.

The bank's announcement was made on Thursday and also mentioned Marianne Lak, though details about her role are not specified here. For more information on these developments, readers can refer to the original source, which may provide further details on the promotions and what they mean for the bank's future leadership.