22. Ginni Rometty
ginni rometty MPW panel

Chairman and CEO, IBM

Rometty's first 10 months as president and CEO of IBM (IBM, Fortune 500) went so well that in October, predecessor Sam Palmisano handed her the role of chairman. A 31-year veteran of the tech giant, Rometty, 55, managed the $3.5 billion PwC Consulting acquisition that launched IBM in the services business in 2002, and has helped develop IBM's signature successive five-year growth plans. She has promised $20 billion in revenue growth over the next five years. --JH

- Last updated November 30 2012 05:12 PM ET
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