He's now estimated to be worth $1.7 billion, according to Forbes.
Dimon joined the three comma club in 2015, Bloomberg reported at the time.
"The odds are much, much lower for a bank CEO becoming a billionaire than a guy going to a hedge fund or private equity," said NYU Stern School of Business professor Roy Smith told Bloomberg. "The real lucre in this business has always been on the transactional side. The CEOs of Wall Street have to deal with litigation, regulation, and the relatively short tenures you have at the top of the pile."
Weill is one of the few other bank executives to become a billionaire, according to Bloomberg.