Take a look at some of Tuesday's midday movers:
Microsoft - The software giant's shares rose after it named Satya Nadella as its next chief executive and John Thompson as chairman. Bill Gates remains on the board and assumes the title of "founder and technology advisor."
Sony - Shares of the electronics company spiked following a report in the Japanese newspaper Nikkei that investment fund Japan Industrial Partners was considering buying Sony's PC business.
Pfizer - The drug maker gained after Jefferies raised its rating to buy from hold, citing the company's business reorganization and the possibility the company's experimental drug for advanced breast cancer could be approved as soon as the end of the year.
Furiex Pharmaceuticals - Shares surged after it reported its experimental drug to treat a form of irritable bowel syndrome met main goals in a late-stage study.
Zynga - The developer of online games gained after UBS upgraded the stock to buy from neutral.
J.C. Penney - The department-store operator's shares slid, reversing a rise in premarket trade. It reported a modest gain in quarterly comparable sales but offered no details on its gross profit margin. JPMorgan and Sterne Agee cut the target price of the stock.
Gannett - Shares of the media company edged higher after it reported quarterly revenue in line with expectations
Gilead Sciences - The biopharmaceutical company gained after Baird upgraded the stock to outperform from neutral.
McGraw Hill Financial - The parent company of ratings agency Standard & Poor's climbed after its fourth-quarter results and forecast topped estimates.
Delphi Automotive - The company's shares climbed after it reported better-than-expected quarterly profit.
Eaton - The diversified manufacturer declined after reporting disappointing quarterly profit margins and revenue.
UBS - The Swiss bank rose after swinging to a fourth-quarter profit and increasing its dividend.
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—By CNBC's Rich Fisherman.
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