I cannot help but wonder what would have happened if David Tepper never went on CNBC a few weeks back. Would stock prices be going up on bad news? He planted the idea that all news is good news because the Fed will print money. Investors have taken the ball and run.
George Soros introduced the idea of reflexivity where one's actions in markets can change the course of events. I highly doubt Tepper intended to have such a large effect but I cannot help but think that the course of the market might have been different had he not appeared on TV.