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11. Texas Instruments
Fortune 500 rank: 185
Profits as Texas Instruments plunged 39% to $2.7 billion last year, mainly due to the 2006 sale of its sensors and controls unit. But a drop in mobile phone chip orders led the company to lower its 2008 guidance.

NEXT: 12. Corning
Last updated April 24 2008: 11:04 AM ET