Targanta Therapeutics Corp. (Nasdaq:TARG), Westport Innovations Inc. (Nasdaq:WPRT) and Superior Bancorp (Nasdaq:SUPR) are among the biggest percentage gainers in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Heritage Financial Corp. (Nasdaq:HFWA), BankAtlantic Bancorp Inc. (Nasdaq:BBX), Bank of the Ozarks Inc. (Nasdaq:OZRK), UAL Corp. (Nasdaq:UAUA), LSB Corp. (Nasdaq:LSBX) and Gladstone Commerical REIT (Nasdaq:GOOD).

Here are the biggest percentage gainers among small caps:

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