SUN VALLEY, ID - JULY 10: Stanley 'Stan' Druckenmiller, chairman and chief investment officer of Duquesne Family Office LLC, attends the Allen & Company Sun Valley Conference on July 10, 2014 in Sun Valley, Idaho. Many of the worlds wealthiest and most powerful executives from media, finance, and technology attend the annual week-long conference which is in its 32nd year. (Photo by Scott Olson/Getty Images)