Early movers: CMCSA, PFE, AZN, GE, MSFT, MT & more By: CNBC.com News April 28, 2014 at 08:02 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Actavis Plc Alstom S.A. American Airlines Gp Apple Arcelor Mittal Astrazeneca Plc ADR Comcast Corp Corning General Electric JPMorgan Chase & Co Laboratory Corp American Holdings Merck & Co Microsoft Pfizer Roper Indus Time Warner Cable