CEO, UnitedHealthcare; EVP, UnitedHealth Group UnitedHealth Group 2010 rank: 34 Age: 51
Promoted to run the entire health benefits division, Boudreaux, who reports to CEO Stephen Hemsley, now manages businesses that represent 93% of group sales. Her unit saw revenue climb
$6.1 billion, to $87.4 billion.
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.