Fortune's 50 Most Powerful Women in business

Nearly everyone on the list is striving to reinvent her business. Meet a group of executives who don't sit still.

15.  Rosalind Brewer

mpw13 rosalind brewer
  • Title: CEO and President, Sam's Club
  • Company: Wal-Mart Stores
  • Age: 51
  • Last year's rank: 13

As head of Wal-Mart's warehouse club business, Brewer runs one of three operating segments at the retail giant. With $56.4 billion in revenue, it's so big that it would rank No. 53 on the Fortune 500 if it were a standalone company. The Lockheed board member drove sales up 5%, and operating income up 6% at Sam's Club and has been building its online business. She also has the ear of CEO Mike Duke: Brewer is his direct report, and the two have one-on-one sessions at least twice a month.

Additional reporting by Miguel Helft, Jessi Hempel, Adam Lashinsky, Jennifer Reingold, Shawn Tully, Patricia Sellers and Alex Taylor III
  @FortuneMagazine - Last updated November 21 2013 02:44 PM ET
Join the Conversation
25 highest-paid women

Safra Catz of Oracle again tops the list, with $43 million in total compensation. See who else raked it in last year.

How we pick the Most Powerful Women
The Most Powerful Women in Business 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 social and cultural influence.
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.