Take a look at some of Thursday's midday movers:
Abercrombie & Fitch (ANF) - The teen retailer gained after Jefferies upgraded it to buy from hold.
AstraZeneca (London Stock Exchange: AZN-GB) - The drug manufacturer climbed on a Bloomberg report that Pfizer (PFE) was preparing a $106 billion takeover bid.
Build-A-Bear Workshop (BBW) - The specialty retailer rose after reporting better-than-expected first-quarter earnings.
Cardinal Health (CAH) - The distributor of prescription drugs fell after its third-quarter income fell 9 percent.
Catamaran (Toronto Stock Exchange: CCT-CA) - The provider of pharmacy benefit management services gained after posting better-than-expected quarterly earnings.
Exxon Mobil (XOM) - The oil producer declined after reporting a dip in first-quarter earnings.
Ford (NYSE:F) - The car producer fell after its April sales missed expectations.
General Motors (GM) - The auto manufacturer rose after it said April auto sales topped expectations.
Harman International Industries (HAR) - The car audio maker posted better-than-expected first-quarter earnings and raised its 2014 forecast.
Kellogg (NYSE:K) - The cereal maker fell after reporting a bigger-than-expected fall in quarterly revenue.
Merrimack Pharmaceuticals (MACK) - Shares jumped after it reported positive results on its experimental pancreatic cancer drug.
Rite Aid (RAD) - The drugstore operator advanced after reporting April sales rose 5 percent because of a late Easter.
Rocket Fuel (FUEL) - The provider of technology used by advertisers rose after Evercore Partners raised its rating to equal weight.
Textron (TXT) - The Cessna parent slid after cutting its full-year earnings outlook.
T-Mobile US (TMUS) - The wireless carrier gained after saying it added a record number of customers in the first year.
Toyota Motor (Tokyo Stock Exchange: 7203.T-JP) - The car producer climbed after reporting its April sales rose.
Viacom (VIAB)- 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 (YUM) - The restaurant operator named Taco Bell CEO Greg Creed as its next chief executive, replacing David Novak on Jan. 1, 2015.
(Read More: See CNBC's Market Insider Blog )
-By CNBC's Rich Fisherman.
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