President and CEO, GE Home and Business Solutions; SVP and CIO, GE General Electric 2010 rank: 20 Age: 44
The GE lifer saw the size of her business more than double to $8.6 billion in 2010 after a reorganization gave her oversight of the appliance and lighting businesses. She reports to CEO
Jeff Immelt and manages more than 39,000 employees.
The list is compiled by FORTUNE editors, who consider four criteria: the size and importance of the womanís business in the global economy, the health and direction of the
business, the arc of the womanís career (resume and runway ahead), and societal and cultural influence.