I consider Bill Ackman the definitive example of American capitalism, especially when judged on an individual basis. Ackmans is well-educated and Pershing Square strategies are ruthless and well-executed (except for one highlighted below).
Ackman interviewed on Impact Players
Bill Ackman at Said Business School
While many are critical of the positions Pershing Square Capital took in Herbalife, (as of December 2015) I do not think Ackman is done with Herbalife just yet.
Pershing Square Challenge
Since 2008, the Pershing Square Challenge has been held annually at the Heilbrunn Centre for Graham and Dodd Investing.
2015 Winning Presentation on Altice (who’s share price has seen a downturn):