SurModics, Inc. (Nasdaq:SRDX), Evergreen Solar Inc. (Nasdaq:ESLR) and Palm Inc. (Nasdaq:PALM) are among the most actively traded companies in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF), Bankrate Inc (Nasdaq:RATE), Ceragon Networks Ltd. (Nasdaq:CRNT), Brigham Exploration Co. (Nasdaq:BEXP), Dress Barn Inc. (Nasdaq:DBRN) and Clean Energy Fuels Corp. (Nasdaq:CLNE).

Here are the most actively traded companies among small caps:

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