DryShips Inc (Nasdaq:DRYS), Hallwood Group Inc (Nasdaq:HWG) and TBS International Ltd (Nasdaq:TBSI) are among the biggest percentage gainers in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Polypore International Inc (Nasdaq:PPO), James River Coal Co (Nasdaq:JRCC), Gencor Industries Inc (Nasdaq:GENC), Textainer Group Holdings Ltd (Nasdaq:TGH), 012 Smile Communications Ltd (Nasdaq:SMLC) and Genco Shipping & Trading Ltd (Nasdaq:GNK).

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