As discussed here, I have resurrected a scan that focuses on companies that are heavily shorted. The purpose is to find stocks that could be in the midst of a potential short covering rally. More details about the methodology are listed below and more information on short interest is here.
Companies included in today's scan are: LCA-Vision (LCAV), Georgia Gulf (GGC), Greatbatch Technologies (GB), Amylin Pharmaceuticals Inc (AMLN), Cox Radio (CXR), Bare Escentuals, Inc. (BARE), MGM Mirage (MGM), Pinnacle Entertainment (PNK), Bill Barrett Corporation (BBG), Allscripts Healthcare Solutions Inc (MDRX), Lee Enterprises Inc (LEE), Quality Systems (QSII), Cubist Pharmaceuticals (CBST), Ameristar Casinos (ASCA), Great Atlantic & Pacific Tea (GAP), RSC Holdings Inc. (RRR), Amkor Technology (AMKR), Lumber Liquidators (LL), Temple-Inland (TIN), Lindsay Manufacturing Co. (LNN), Hanmi Financial (HAFC), FARO Technologies (FARO), Myriad Genetics (MYGN), Cadence Pharmaceuticals, Inc. (CADX), Invitrogen (IVGN).

Methodology - the query scans my database of companies which has some basic filters to eliminate penny stocks and those that don't trade frequently. The table above lists stocks that have at least 10 percent of their float sold short and then shows the top gainers from the previous trading day. This can be a useful tool for finding situations where stocks with heavy short interest have begun to move.
Copyright Schaeffer's Investment Research http://www.schaeffersresearch.com