JPMorgan reshuffles its executive team as Daniel Pinto retires and Jennifer Piepszak becomes COO, narrowing the race to succeed Jamie Dimon.

The moves would appear to make Doug Petno and Troy Rohrbaugh the most obvious possible successors to JPMorgan Chase CEO Jamie Dimon.

Jamie Dimon elevates two executives to co-presidents at JPMorgan Chase, continuing a succession playbook with major implications for the bank's blockchain