Take a look at some of Wednesday's midday movers:
Apple moved lower following a shakeup in its management ranks earlier this week.
(Read More: Trading Oil in the Wake of Sandy)
Facebook fell after its lockup period expired. About 234 million shares held by employees are eligible for sale in the public market.
Owens Corning, Masco and Lumber Liquidators all rose as investors viewed them as Hurricane Sandy recovery stocks.
Self-Storage REITS Extra Space Storage, Sovran Self Storage and CubeSmart moved higher as the rebuilding effort from the destruction of Hurricane Sandy begins.
Property & Casualty Stocks including ACE, AIG, Travelers, Progressive and Everest Re all moved lower in the wake of the billions of dollars in damages Hurricane Sandy left behind.
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.
Questions? Comments? Email us at marketinsider@cnbc.com