Early movers: QCOR, SYMC, GM, UA, PFE, EGN & more By: CNBC.com News April 07, 2014 at 07:48 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Actavis Plc BlackRock Clean Harbors Daiichi Sankyo Ltd ADR Eagle Materials Inc Energen Corp GX Defense Tech ETF General Motors Holcim Ltd Hospira Mallinckrodt plc Pandora Media Inc Pfizer Potash Corporation of Saskatchewan Procter & Gamble Symantec Corp Under Armour Yahoo Zynga Inc Cl A