FORTUNE's annual ranking of America's leading businesswomen

10 of 50
10. Safra Catz
Safra Catz
President and CFO
2011 rank: 11
Age: 50
Catz is comfortable sharing power -- ex-HP chief Mark Hurd is also an Oracle president -- perhaps because she's in charge of the software maker's mighty M&A machine, which has announced 10 deals valued at more than $5 billion in the last year alone.
From the October 8, 2012 issue
How we pick the Power 50
The list is compiled by FORTUNE editors, who consider four criteria: the size and importance of the woman's business in the global economy, the health and direction of the business, the arc of the woman's career (resume and runway ahead), and societal and cultural influence.