JPMorgan Chase & Co. on Tuesday named Jennifer Piepszak its new chief operating officer, but the company’s four major department heads remain more likely successors to Chief Executive Jamie Dimon to head up the largest U.

Jamie Dimon's "hit by the bus" heir, Daniel Pinto, is retiring. The incoming chief operating officer, Jennifer Piepszak, doesn't want the CEO role.

Piepszak has signaled that she doesn’t want to take the top job at the bank, people close to her said