Yucheng Technologies (Nasdaq:YTEC), Amtech Systems Inc (Nasdaq:ASYS) and Perceptron Inc (Nasdaq:PRCP) are among the biggest percentage losers in Thursday's trading among companies with market capitalizations under $750 million.

CapitalSouth Bancorp (Nasdaq:CAPB), WSP Holdings Ltd (Nasdaq:WH) and Steak n Shake Company (NYSE:SNS) are also among the biggest percentage losers.

Here are the biggest percentage losers among small caps:

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