Microsoft, Goodyear Tire, American Express big market movers

NYSE

Goodyear Tire & Rubber Co., up $1.74 at $28.99

Higher-priced tires and strong sales in international markets caused the nation's biggest tire maker to swing to a first-quarter profit.

American Express Co., up $1.52 at $46.7

Although quarterly profit slipped 6 percent, the credit card lender said cardholders are still spending, which has helped compensate for weakness in the U.S.

Herbalife Ltd., down $4.31 at $39.71

The diet pill company is reviewing an admission by President and Chief Operating Officer Gregory L. Probert, who didn't complete his MBA degree, as stated in his biography.

ExpressJet Holdings Inc., up 89 cents at $2.98

A special committee of its board unanimously rejected an offer by SkyWest Inc. to acquire the airline company for $3.50 per share in cash.

NASDAQ

Microsoft Corp., down $2.05 at $29.75

Sluggish sales of Windows software tugged down fiscal third-quarter profit for the company trying to acquire Yahoo Inc.

Baidu.com Inc., up $19.20 at $361.20

A Citi Investment Research analyst upgraded the stock to "Buy," after first-quarter sales came in better than expected.

LM Ericsson AB, up $2.73 at $24.43

Higher costs for recent acquisitions caused first-quarter profit to slide 55 percent, but that was still better than expected.

Amgen Inc., down 68 cents at $41.72

A drop in sales of the biotech company's anemia drugs caused first-quarter profit to come in nearly flat.