Early movers: BAC, PNC, TWC, TWTR, YHOO, GM & more By: CNBC.com News April 16, 2014 at 07:46 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Bank of America CSX Corp Citigroup Comcast Corp General Motors Intel Corp St. Jude Medical Syngenta AG ADS Time Warner Cable Twitter, Inc. UnitedHealth Group Wells Fargo Yahoo Yelp Inc