GFI Group Inc (Nasdaq:GFIG), Cal-Maine Foods Inc (Nasdaq:CALM) and Solarfun Power Holdings Co Ltd (Nasdaq:SOLF) are among the most actively traded companies in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Canadian Solar Inc (Nasdaq:CSIQ), FCStone Group, Inc. (Nasdaq:FCSX), National Coal Corp (Nasdaq:NCOC), Quest Energy Partners L P (Nasdaq:QELP), DrdGold ADR (Nasdaq:DROOY) and Gilat Satellite Networks Ltd (Nasdaq:GILT).

Here are the most actively traded companies among small caps:

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