Early movers: MRK, PFE, GNRC, HMA, CYH & more By: CNBC.com News July 30, 2013 at 08:11 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Activision Blizzard Akamai Technologies Amazon.com Anadarko Petroleum Apollo Asset Management Inc Baidu.com SP ADR CBS Corp Celanese Corp Cheesecake Fact Citrix Systems Coach Community Health Systems E Trade Financial Eastman Chemical Expedia Express Scripts Holding Generac Holdings Inc Gilead Sciences Google, Inc. Halliburton Co Hartford Finl Services Gp Hca Holdings Inc Herbalife Ltd KLA-Tencor Corp Lockheed Martin Merck & Co Mosaic Co Natl Oilwell Varco Netflix Newell Rubbermaid Newmont Mining Pfizer Pitney Bowes Potash Corporation of Saskatchewan Stanley Black & Decker Starbucks Corp Tempur-Pedic International Inc Time Warner Time Warner Cable United States Steel Corp Vertex Pharmaceuticals Western Digital Zynga Inc Cl A