47. Nancy Peretsman
EVP, Managing Director, Allen & Co.
2005 rank: 38
M&A specialist Peretsman helped broker Google's 11th-hour, $1 billion bid for a 5% stake in AOL (and an advertising partnership) that thwarted an AOL- Microsoft alliance. A trusted advisor to big media companies, small online businesses, and family firms, she has recently been spending time in China.
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