Early Movers: YHOO, CPB, BA, GE & More By: CNBC.com News May 20, 2013 at 08:00 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Accenture Plc Amtd Idea Group Anadarko Petroleum Aq Corp Bank of America BlackRock Boeing Co Campbell Soup Charles Schwab Chesapeake Energy General Electric Novartis Ag ADR Sodastream Int Ltd The Priceline Group Valeant Pharmaceuticals International, Inc. Yahoo