IBM rose after authorizing an additional $5 billion share buyback plan.
Western Union traded at its lowest level since April 2009 after the company slashed its earnings outlook.
Cameron moved lower after the company issued weak guidance for the rest of the year.
MasterCard moved higher after the credit-card provider posted better quarterly earnings.
Biogen Idec fell after Goldman Sachs said the company's experimental hemophilia drug didn't compare well to leader Baxter's well-established drug.
Seagate slid after the company reported weaker-than-expected quarterly earnings.
WellCare Health Plans tumbled after the company cut its 2012 forecast as its Medicaid insurance program in Kentucky posted weak results.
Red Robin moved higher after the restaurant chain posted better-than-expected earnings.
GT Advanced Technologies plunged after the solar and led equipment maker said it would cut 25 percent of its workforce.
GlaxoSmithKline lost ground after its earnings fell more than expected.
(Read More: CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
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