FORTUNE's annual ranking of America's leading businesswomen

42 of 50
42. Laura Sen
Laura Sen
President and CEO
BJ's Wholesale Club
2011 rank: 44
Age: 56
The private equity companies that acquired BJ's for $2.8 billion last year endorsed Sen's leadership by retaining her as CEO. She says BJ's, which trails Costco and Wal-Mart's Sam's Club with sales of about $11 billion, will open five stores annually for the next five years.
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.