AFP/Getty Images Jamie Dimon says the QE unwind will be new for everyone.Investors don’t know what to expect when the Federal Reserve and other major central banks begin unwinding their multi-trillion-dollar bond-buying programs, J.P. Morgan Chase & Co. JPM, -0.39% Chairman and Chief Executive Jamie Dimon warned on Tuesday. Speaking at a conference in Paris, Dimon, according to Bloomberg, had this to say: ‘We’ve never had QE like this before, we’ve never had unwinding like this before. Obviously that should say something to you about the risk that might mean, because we’ve never lived with it before.’Jamie Dimonvia