Fortune 500: The Top 50

Wal-Mart retakes the No. 1 slot on the Fortune 500 this year. See where America's largest corporations rank, and why.

21. UnitedHealth Group
21. UnitedHealth Group
Fortune 500 rank: 21 (Previous rank: 37)
2006 Revenues (millions): $71,542
Headquarters: Minnetonka, MN
Get quote: UNH

A stock options scandal at the health care insurer led to the departure of CEO William McGuire. But the company's $8.1 billion acquisition of PacifiCare, completed in late 2005, helped boost revenues 58% and earnings by 26% last year, moving it up 16 spots on the list.

See more Fortune 500 data for UnitedHealth Group

Wal-Mart

Exxon Mobil

General Motors

Chevron

ConocoPhillips

General Electric

Ford Motor

Citigroup

Bank of America Corp.

American International Group

J.P. Morgan Chase & Co.

Berkshire Hathaway

Verizon

Hewlett-
Packard

International Business Machines

Valero Energy

Home Depot

McKesson

Cardinal Health

Morgan Stanley

UnitedHealth Group

Merrill Lynch

Altria Group

Goldman Sachs Group

Procter & Gamble

Kroger

AT&T

Boeing

Amerisource Bergen

Marathon Oil

State Farm Insurance Cos.

Costco Wholesale

Target

Dell

WellPoint

Johnson & Johnson

MetLife

Sears Holdings

Pfizer

Dow Chemical

Wells Fargo

United Technologies

United Parcel Service

Walgreen

Lowe's

Wachovia Corp.

Lehman Brothers Holdings

Time Warner

Microsoft

Freddie Mac
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