Fortune 500 rank: 15 (Previous rank: 10)
2006 Revenues (millions): $91,424
Headquarters: Armonk, NY
Get quote: IBM
Though IBM continues to build its services division, which now accounts for half of sales, revenue was flat last year for the company as a whole, causing Big Blue to slip five spots on the list. Cost-cutting in the services unit, as well as strong software sales, helped profits jump 20%.
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