Westport Innovations Inc. (Nasdaq:WPRT), Carrizo Oil & Gas Inc. (Nasdaq:CRZO) and EnerNOC Inc. (Nasdaq:ENOC) are among the biggest percentage gainers in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Energy Solutions Inc. (Nasdaq:ES), Bruker Corp. (Nasdaq:BRKR), Sykes Enterprises Inc. (Nasdaq:SYKE), Taleo Corp. (Nasdaq:TLEO), Evergreen Solar Inc. (Nasdaq:ESLR) and SunPower (Nasdaq:SPWRB).

Here are the biggest percentage gainers among small caps:

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