Nektar Therapeutics (Nasdaq:NKTR), RXi Pharmaceuticals Corp. (Nasdaq:RXII) and Insight Enterprises Inc. (Nasdaq:NSIT) are among the biggest percentage gainers in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Buckeye Technologies Inc. (Nasdaq:BKI), Interval Leisure Group Inc. (Nasdaq:IILG), Safe Bulkers Inc. (Nasdaq:SB), TRW Automotive  (Nasdaq:TRW), American Apparel Inc. (Nasdaq:APP) and Rockwood Holdings Inc .(Nasdaq:ROC).

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