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Investor runner-up: Yuri Milner
CEO and founding partner, DST

Ever since Russian investor Milner sank $200 million into Facebook in May 2009, entrepreneurs have started asking about 'DST-style deals.' As CEO of Digital Sky Technologies, Milner, 51, has so far invested more than $1 billion in American consumer Internet companies, introducing an innovative deal structure in the process. He asks for no preferred shares when he makes his supersize investments, and he doesn't want a board seat. "It's not risky because I know these companies will be very big," he says. DST has the majority share of every Russian Internet business except search engine Yandex. In the U.S., Milner has led investments in Facebook, Zynga, and Groupon. With billions more to invest, Milner is just getting started. --J.H.

NEXT: Smartest Scientist: Robert Morris
Last updated July 09 2010: 1:19 PM ET
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