Gehl Co. (Nasdaq:GEHL), Nevada Chemicals Inc. (Nasdaq:NCEM) and Champion Enterprises Inc. (Nasdaq:CHB) are among the biggest percentage gainers in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: PHH Corp. (Nasdaq:PHH), Drew Industries Inc. (Nasdaq:DW), Anworth Mortgage Asset Corp. (Nasdaq:ANH), SI Financial Group Inc. (Nasdaq:SIFI), Meritage Homes Corp. (Nasdaq:MTH) and Heritage Oaks Bancorp (Nasdaq:HEOP).

Here are the biggest percentage gainers among small caps:

US Airways Group Inc (Nasdaq:LCC), Guaranty Financial Group Inc (Nasdaq:GFG) and Asta Funding Inc (Nasdaq:ASFI) are among the new 52-week lows in Wednesday's trading among companies with market capitalizations under $750 million.

AH Belo Corp (Nasdaq:AHC), Heritage Oaks Bancorp (Nasdaq:HEOP) and Great Southern Bancorp Inc (Nasdaq:GSBC) are also among the new 52-week lows.

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

Irvine, Calif.-based ISTA Pharmaceuticals, Inc. (Nasdaq: ISTA) reported is is selling up to $100 million in common and preferred stock.

These are the biggest percentage gainers in Thursday's trading among companies with market capitalizations under $500 million: