DryShips Inc. (Nasdaq:DRYS), Geron Corp. (Nasdaq:GERN) and P.F. Chang's China Bistro Inc. (Nasdaq:PFCB) are among the most actively traded companies in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Medarex Inc. (Nasdaq:MEDX), Kendle International Inc. (Nasdaq:KNDL), Canadian Solar Inc. (Nasdaq:CSIQ), UAL Corp. (Nasdaq:UAUA), A Power Energy Generation Systems Ltd. (Nasdaq:APWR) and Eagle Bulk Shipping Inc. (Nasdaq:EGLE).

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