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26. Susan Wagner
Vice chairman
BlackRock (BLK)
2009 rank: 33
Age: 49

Wagner led BlackRock's $13.5 billion purchase of Barclays Global Investors in 2009, creating the world's largest asset-management organization, with $3.151 trillion. She also sits on a new five-person oversight team that includes CEO Larry Fink.

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Last updated September 30 2010: 2:47 PM ET
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