Psychiatric Solutions Inc. (Nasdaq:PSYS), Healthspring Inc. (Nasdaq:HS) and Kronos Worldwide Inc. (Nasdaq:KRO) are among the new 52-week lows in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Quaker Chemical Corp. (Nasdaq:KWR), Amsurg Corporation (Nasdaq:AMSG), Gibraltar Industries Inc. (Nasdaq:ROCK), Con-Way Inc. (Nasdaq:CNW), Met-Pro Corp. (Nasdaq:MPR) and Farmers Capital Bank Corp. (Nasdaq:FFKT).

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