Early movers: S, SNY, ALR, TWTR, MYL, AAPL & more By: CNBC.com News December 29, 2016 at 08:25 AM EST These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Apple GX Defense Tech ETF Mylan NVIDIA Corp Raytheon Co Sanofi-Aventis S.A. ADR Senior Housing Properties Trust Sentinelone Inc Cl A Twitter, Inc.