Jonathan Berk turns the efficient market hypothesis, which popularized the belief that mutual fund managers were "monkey investors" who consistently perform worse than the overall market, on its head to prove that mutual fund managers are in fact highly skilled investors. And he proposes a new way to accurately measure a mutual fund manager's level of skill. Berk is the A.P Giannini professor of finance at Stanford Graduate School of Business.

Learn more about Jonathan Berk: http://faculty-gsb.stanford.edu/berk/...