Joke's on you. Dimon piled on the China ICO band and exchange FUD to bring Bitcoin down to $3000, after which they stocked up. They have more than doubled their money since then. He keeps saying that Bitcoin is a scam, but there's really no bigger scammer than him. We don't know if he truly does not believe Bitcoin's long term prospects, but we know for certain that he believes he can use it to make money in the short term at the very least.

As for the all time high, that's just ridiculous. May have something to do with high profile forks just happening one after the other.