Builders FirstSource Inc. (Nasdaq:BLDR), China Medical Technologies Inc. (Nasdaq:CMED) and Books-A-Million Inc. (Nasdaq:BAMM) are among the biggest percentage losers in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Sequenom Inc. (Nasdaq:SQNM), CPI Corp. (Nasdaq:CPY), Benihana National Corp. (Nasdaq:BNHNA), Female Health Co. (Nasdaq:FHCO), Facet Biotech Corp. (Nasdaq:FACT) and SIGA Technologies Inc. (Nasdaq:SIGA).

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