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The Power 50

Business has its ups and downs, and so, naturally, do women in business. (Bye-bye, Martha!) But the story of this list is one of achievement: The credentials of these women, including the 13 newcomers, are the strongest yet.

Ann Livermore
13. Ann Livermore
EVP, Technology Solutions Group
Hewlett-Packard (HPQ)
2006 rank:  14
Age: 49

She doesn't make headlines, but Livermore delivers results. Her group, which includes servers, storage, software, and services for corporate clients, accounts for 36% of sales at the $101 billion company. Operating income for her division jumped nearly 60% last year, to $3 billion, part of the reason the Silicon Valley stalwart has had a stellar run on the stock market.

Indra Nooyi

Anne Mulcahy

Meg Whitman

Angela Braly

Irene Rosenfeld

Pat Woertz

Susan Arnold

Oprah Winfrey

Andrea Jung

Brenda Barnes

Ursula Burns

Sallie Krawcheck

Ann Livermore

Christine Poon

Anne Sweeney

Zoe Cruz

Ginni Rometty

Judy McGrath

Ann Moore

Sue Decker

Susan Desmond-Hellmann

Diane Greene

Amy Brinkley

Susan Ivey

Ellen Kullman

Charlene Begley

Heidi Miller

Cece Sutton

Sheryl Sandberg

Abigail Johnson

Carol Meyrowitz

Carrie Cox

Linda Dillman

Shelly Lazarus

Mary Sammons

Lisa Weber

Claire Babrowski

Joanne Maguire

Colleen Goggins

Kathleen Murphy

Dawn Hudson

Liz Smith

Cathleen Black

Pam Nicholson

Melanie Healey

Amy Pascal

Deirdre Connelly

Jan Fields

Julia Stewart

Cathie Lesjak
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