Entrepreneurs that Got Filthy Rich in 2011

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Mark Pincus, Zynga

The Zynga IPO, which raised about $1 billion from the public, will make Mark Pincus Silicon Valley’s next billionaire. According to the company’s prospectus, Pincus will own 112 million shares, or nearly 20 percent of the company’s overall value, which is around $10 billion, which will make him worth about $2 billion.