Take a look at some of Thursday's midday movers:
Abercrombie & Fitch - The teen retailer gained after Jefferies upgraded it to buy from hold.
Build-A-Bear Workshop - The specialty retailer rose after reporting better-than-expected first-quarter earnings.
Cardinal Health - The distributor of prescription drugs fell after its third-quarter income fell 9 percent.
Catamaran - The provider of pharmacy benefit management services gained after posting better-than-expected quarterly earnings.
Exxon Mobil - The oil producer declined after reporting a dip in first-quarter earnings.
Ford - The car producer fell after its April sales missed expectations.
General Motors - The auto manufacturer rose after it said April auto sales topped expectations.
Harman International Industries - The car audio maker posted better-than-expected first-quarter earnings and raised its 2014 forecast.
Kellogg - The cereal maker fell after reporting a bigger-than-expected fall in quarterly revenue.
Merrimack Pharmaceuticals - Shares jumped after it reported positive results on its experimental pancreatic cancer drug.
Rite Aid - The drugstore operator advanced after reporting April sales rose 5 percent because of a late Easter.
Rocket Fuel - The provider of technology used by advertisers rose after Evercore Partners raised its rating to equal weight.
Textron - The Cessna parent slid after cutting its full-year earnings outlook.
T-Mobile US - The wireless carrier gained after saying it added a record number of customers in the first year.
Toyota Motor - The car producer climbed after reporting its April sales rose.
Viacom - The cable network and movie studio company fell after after announcing a $760 million deal for British TV broadcaster Channel 5 and reporting third-quarter advertising revenue below expectations.
Yum Brands - The restaurant operator named Taco Bell CEO Greg Creed as its next chief executive, replacing David Novak on Jan. 1, 2015.
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—By CNBC's Rich Fisherman.
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