Learning Tree International Inc. (Nasdaq:LTRE), SL Green Rlty  (Nasdaq:SLG) and Presidential Life Corp. (Nasdaq:PLFE) are among the biggest percentage gainers in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Manitowoc Co Inc. (Nasdaq:MTW), Jarden Corp. (Nasdaq:JAH), Tortoise Energy Capital Corp. (Nasdaq:TYY), Blackstone Group LP (Nasdaq:BX), Orexigen Therapeutics Inc. (Nasdaq:OREX) and Trina Solar Ltd. (Nasdaq:TSL).

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