Jamie Dimon has long joked that his retirement is five years away, no matter when he's asked. But not on Monday. The chief executive of JPMorgan Chase told shareholders the timetable is "not five years anymore," in response to a question about how long he planned to remain CEO. The bank is "well on the way" with its succession plans, he said during the firm's investor day. The question of who might steward the firm after Dimon — who has held the top job since 2006 — has loomed over the industry.