A Power Energy Generation Systems, Canadian Solar and JDA Software Group lead small-cap volume in pre-market

A Power Energy Generation Systems Ltd (Nasdaq:APWR), Canadian Solar Inc. (Nasdaq:CSIQ) and JDA Software Group Inc. (Nasdaq:JDAS) are among the most actively traded companies in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Oceanfreight Inc. (Nasdaq:OCNF), Hiveld Steel Depository Receipt (Nasdaq:HSVLY), Cavium Networks Inc. (Nasdaq:CAVM), Solarfun Power Holdings Co Ltd (Nasdaq:SOLF), Allscripts Misys Healthcare Solutions Inc. (Nasdaq:MDRX) and TBS International Ltd (Nasdaq:TBSI).

Here are the most actively traded companies among small caps:

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