Protective Life Corp. (Nasdaq:PL), Student Loan Corp. (Nasdaq:STU) and Horace Mann Educators Corp. (Nasdaq:HMN) are among the new 52-week lows in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Max Capital Group Ltd. (Nasdaq:MXGL), Independence Holding Co. (Nasdaq:IHC), Advanced Medical Optics Inc. (Nasdaq:EYE), Park-Ohio Holdings Corp. (Nasdaq:PKOH), Calamos Asset Management Inc. (Nasdaq:CLMS) and Sunrise Senior Living Inc. (Nasdaq:SRZ).

Here are the new 52-week lows among small caps:

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