Huron Consulting Group Inc. (Nasdaq:HURN), Geron Corp. (Nasdaq:GERN) and Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF) are among the most actively traded companies in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Century Aluminum Co. (Nasdaq:CENX), UAL Corp. (Nasdaq:UAUA), Energy Conversion Devices Inc. (Nasdaq:ENER), Fuqi International Inc. (Nasdaq:FUQI), Crocs Inc. (Nasdaq:CROX) and DrdGold ADR (Nasdaq:DROOY).

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