Early movers: MYL, HLF, CHTR, TMUS, UTX, SQ, KEY & more By: CNBC.com News August 29, 2016 at 08:18 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Aetna Block Inc Charter Communications Inc Herbalife Ltd Humana KeyCorp Mylan Regeneron Pharmaceuticals Rogers Corp Sanofi-Aventis S.A. ADR T-Mobile US United Technologies UnitedHealth Group