Jamie Dimon isn’t giving up the top job. That’s turned JPMorgan into a poaching ground for CEO talent

For nearly two decades, there has been one constant atop JPMorgan Chase: Jamie Dimon.

The question of who succeeds the 70-year-old banking titan has become one of corporate America’s longest-running succession stories. This week, the field narrowed after Marianne Lake, CEO of consumer and community banking, who was long viewed as a leading internal contender, announced plans to leave the bank. Jennifer Piepszak, the bank’s chief operating officer and another executive who spent years on succession watch lists, has also made clear she does not want the chief executive role. That leaves newly appointed co-presidents Doug Petno and Troy Rohrbaugh as the leading internal candidates.

The succession race has become narrower, but no more definitive. Dimon, who has led JPMorgan since 2006, has suggested he could remain CEO for another three years, extending a succession process that has spanned multiple generations of executives. Without a firm timetable for his departure, the prolonged succession process has coincided with a........

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