Alliant Energy Corp. Altra Holdings, Inc. Alvarion Ltd American Capital Ltd Ameristar Casinos, Inc. Archer-Daniels-Midland Co. Argo Group International Holdings LTD Atmel Corp Atwood Oceanics, Inc. BRE Properties, Inc. BTU International, Inc. Baker Hughes, Inc. Bill Barrett Corp. Bio-Rad Laboratories Inc. Cl A Blount International, Inc. Boyd Gaming Corp. CAI International CVS Caremark Cabelas, Inc. Calamos Asset Management, Inc. Cambrex Corp. Checkpoint Systems, Inc. Chesapeake Energy Corp. Clayton Williams Energy, Inc. Cognizant Technology Solutions Comfort Systems USA Corinthian Colleges, Inc. Cornerstone Therapeutics, Inc. Cray, Inc. Cynosure, Inc. Class A Danaos Corporation Diamondrock Hospitality DigitalGlobe, Inc. DineEquity Dolan Company Dominos Pizza, Inc. ESCO Technologies, Inc. EXCO Resources El Paso Electric Co. Emerson Electric Co. Endurance Specialty Holdings Ltd. FEI Co Federal Realty Investment Trust FirstEnergy Corp. FirstMerit Corp Fresh Del Monte Produce GTX, Inc. Genomic Health, Inc. Glatfelter Glu Mobile, Inc. Grand Canyon Education, Inc. Haemonetics Corp. Headwaters, Inc. Health Net, Inc. Healthsouth Corp. Henry Henry Schein, Inc. Hersha Hospitality Trust Hill-Rom Holdings IMPAX LABORATORIES, Inc. Ikanos Communications, Inc. Inergy L.P. Inland Private Capital Corp Integrated Device Technology I Intrepid Potash Kindred Healthcare, Inc. Kinross Gold Corp. Macerich Co. Magellan Midstream Partners L.P. Marathon Oil Corp. Marsh & McLennan Cos. Martin Marietta Materials, Inc. Masimo Corporation MasterCard Cl A Merck & Co., Inc. Molson Coors Brewing Co. Cl B Monotype Imaging Holdings, Inc. Mueller Water Products Myriad Genetics, Inc. NYSE Euronext National Retail Properties Navigant Consulting, Inc. NiSource, Inc. OPENTABLE Och-Ziff Capital Management Group Onyx Pharmaceuticals, Inc. PennyMac Mortgage Investment Trust Pfizer, Inc. Pioneer Natural Resources Co. Portland General Electric RTI International Metals, Inc. Radian Group, Inc. Republic Airways Holding, Inc. Rigel Pharmaceuticals, Inc. Ritchie Bros. Auctioneers, Inc. SBA Communications Corp Seaspan Sempra Energy Senior Housing Properties Trust Sirius XM Radio, Inc. Spectra Energy St. Joe Co. Steven Madden Ltd Stone Energy Corp. Suncor Energy, Inc. Symmetricom, Inc. TAL International Group, Inc. Techne Corp Teco Energy, Inc. The Pantry, Inc. Thomson Reuters True Religion Apparel, Inc. USEC, Inc. Unit Corp. Unum Group Vocus, Inc. Vornado Realty Trust WT Offshore Watts Water Technologies Inc. Cl A Web.com Group, Inc. WebMD Health Corp. Westlake Chemical Corp. Wisconsin Energy Corp. World Fuel Services Corp. Wright Medical Group, Inc. Zebra Technologies Corporation ZipRealty, Inc. kforce, Inc.