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Known best in the Valley for co-founding PayPal and serving on the board of highly-valued Facebook, on Wall Street Thiel is becoming better known as a hedge-fund wunderkind — Clarium Capital, the fund Thiel manages, is well past $3 billion may have already hit the $6 billion mark. The fund's take for taking care of all that business? $500 million by the end of the year, according to estimates by 1440 Wall Street. But then you need that kind of money for retirement if you plan to live forever on a man-made island. (Photo by David Orban)