
Age: 51
Rometty is one reason the tech giant's stock is outpacing the market (up 2%, vs. the S&P 500's 18% decline this past year). Her $18 billion division, which automates complex services for clients in areas from HR to insurance-claim processing, has posted year-over-year profit increases for ten straight quarters.
NEXT: Ellen Kullman
Last updated October 16 2008: 10:16 AM ET