Brooks Automation Inc. (Nasdaq:BRKS), Knot Inc. (Nasdaq:KNOT) and Einstein Noah Restaurant Group Inc. (Nasdaq:BAGL) are among the biggest percentage losers in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Horsehead Holding Corp. (Nasdaq:ZINC), Aceto Corp. (Nasdaq:ACET), Diedrich Coffee Inc. (Nasdaq:DDRX), Diodes Inc. (Nasdaq:DIOD), Luminex Corp. (Nasdaq:LMNX) and Colfax Corp. (Nasdaq:CFX).

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