Jamie Dimon on the ‘Traumatic TARP Experience’

Wall Street is still reeling from one of the most wrenching periods in its history. But for Jamie Dimon, the head of the banking giant JPMorgan Chase, it was the firm’s shining moment.

Mr. Dimon declared Tuesday that JPMorgan was coming off what may have been its “finest year ever,” as he listed the firm’s achievements in a period when some of its largest rivals fell or were acquired by JPMorgan itself.