President and CEO BJ's Wholesale Club 2010 rank: New Age: 55
Sen left in 2003 after failing to secure the CEO job at the warehouse retailer, but she returned to BJís in 2007 and was named CEO two years later. Last fiscal year she drove
revenue to about $11 billion. In June two private equity firms agreed to buy BJís for $2.8 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.