Early movers: CMCSA, UTX, BA, ANTM, NOC, GD, GRMN, AAPL, TWTR & more By: CNBC.com News April 27, 2016 at 08:25 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: ADT Corp AT&T Inc Acuity Brands Inc Anthem Inc Apple Atlantic Power Corp Boeing Co Chipotle Mexican Grill Comcast Corp Edwards Lifesciences Garmin Ltd Genl Dynamics H&R Block Intuit Northrop Grumman Twitter, Inc. United States Steel Corp United Technologies eBay