Bloomberg crunched the numbers on "self-made" billionaires in the U.S. and found that about a quarter of them were college dropouts. Ten of America's 43 self-made billionaires dropped out. One, Harold Hamm, never even attended college.


College drop-outs (estimated worth):

Of those who graduated, the University of Pennsylvania has produced the most self-made billionaires currently alive in the U.S. Four billionaires, including Charles Butt, Steve Cohen, Elon Musk, and Ronald Perelman all got their degrees from Penn.


Next in line is MIT, producing three self-made billionaires: Charles Koch, David Koch and Jim Simons. Princeton also produced three: Jeff Bezos, Carl Icahn, and Eric Schmidt.

Harvard graduated Steve Ballmer and George Kaiser. Yale graduated Steve Schwarzman and John Malone.

The other self-made billionaires on the list include George Soros, Ray Dailo, Len Blavatnik, John Paulson, Jim Goodnight, Pierre Omidyar, Phil Anschutz, Sergey Brin, Larry Page, Richard Kinder, Warren Buffett, Phil Knight, Rupert Murdoch, David Tepper, Charlie Ergen, Donald Bren, John Menard Jr., Patrick Soon-Shiong. If you'd like to know where these men went to school you can check out Bloomberg.

And one self-made American billionaire stands alone as never having attended college at all: Harold Hamm, the oil tycoon worth an estimated $20.2 billion, most well known for developing the Bakken formation that stretches through North Dakota and into Canada. Hamm is currently in divorce proceedings which could potentially result in the largest divorce judgement of all time.


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