The Financial Times published several predictions for 2023. One of them was the following:

Will Jamie Dimon announce a successor as CEO of JPMorgan?

"No. The JPMorgan Chase chief executive has said Daniel Pinto, JPM’s president, would take over if he got hit by a bus or left unexpectedly. That doesn’t make Pinto or anyone else his heir. Last year, the board gave Dimon $50mn in options that vest after five more years of service. The dean of Wall Street CEOs has already seen off several potential rivals and the bank plans to open new headquarters in 2025. Barring another serious health scare, there’s no way he wants a target on his back so soon." Brooke Masters

Preferably resolves according to reporting from the Financial Times, though I reserve the right to resolve by my own judgment if necessary.