11. Ann Livermore
Age: 50
Tapped in 2004 to transform an underperforming unit, she turned the Solutions Group into the leading source of revenue at HP, contributing $37.7 billion, or 36%, of HP's total. A reorganization following the recent acquisition of EDS will shrink Livermore's unit, but it's a strategic move she supports.
NEXT: Anne Sweeney
Last updated October 16 2008: 10:16 AM ET
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