Cambrex Corp. fell 15.2 percent to $6.80.
RTI International Metals Inc. fell 11.5 percent to $24.13.
GenCorp. Inc. fell 9.2 percent to $5.45.
ExamWorks Group fell 7.1 percent to $10.79.
Louisiana-Pacific Corp. fell 7.0 percent to $8.26.
Fusion-io Inc. fell 6.9 percent to $23.02.
Patriot Coal Corp. fell 6.4 percent to $8.62.
Leggett & Platt Inc. fell 5.9 percent to $22.00.
Terex Corp. fell 5.6 percent to $21.93.
Magnum Hunter Resources Corp. fell 5.4 percent to $6.16.
