Midday movers: AIG, Amgen, Lear & more

Traders work on the floor of the New York Stock Exchange in New York.
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Traders work on the floor of the New York Stock Exchange in New York.

Take a look at some of Thursday's midday movers:

American International Group - The insurer fell after CEO Robert Benmosche said in an interview with Bloomberg News that he is departing the company this weekend after learning he has at most a year to live.

Amgen - The drug maker rose after saying it had applied to U.S. regulators to sell its cholesterol drug.

Cliffs Natural Resources - The miner and rivals including Rio Tinto, Vale and BHP Billiton dropped along with with iron-ore prices.

CSR - The U.K.-based maker of Bluetooth devices surged after it rejected an approach by U.S. rival Microchip Technology.

Genesco - The footwear maker fell after posting weaker-than-expected second-quarter earnings and cutting its full-year outlook.

GT Advanced Technologies - The solar and LED-equipment maker fell after Raymond James cut its rating to underperform from market perform.

Johnson & Johnson - The pharmaceutical company edged lower as it recalled some lots of implants used to correct defects of the jaw after more than a dozen cases of injury.

Lannett - The distributor of generic drugs gained after reporting a large rise in quarterly sales.

Lear - The maker of auto seats and electrical-power systems gained after saying it would acquire automotive-leather supplier Eagle Ottawa for $850 million.

Lululemon Athletica - The maker of yoga clothes fell after D.A. Davidson cut the stock to neutral from buy.

OncoMed Pharmaceuticals - The biotechnology company gained after U.S. regulators lifted a partial hold on its cancer-drug trials.

Signet Jewelers - The retailer rose after reporting second-quarter revenue that beat estimates.

Tekmira Pharmaceuticals - The Canadian drug company gained after Daily Mail reported the developer of an Ebola drug was a likely takeover target.

(See CNBC's Market Insider Blog)

—By CNBC's Rich Fisherman.

Questions? Comments? Email us at marketinsider@cnbc.com