JPMorgan Chase Chairman and CEO Jamie Dimon can't stop talking about bitcoin. "If you're stupid enough to buy it, you'll pay the price for it one day," Dimon said in response to a moderator question at an Institute of International Finance conference Friday. The CEO said he could care less about what bitcoin trades at. "The only value of bitcoin is what the other guy'll pay for it," Dimon said. "Honestly I think there's a good chance of the buyers out there are out there jazzing it up every...