Stocks making the biggest moves premarket: CI, BHC, MNK, DF, MAR, Z & more By: CNBC.com News August 07, 2018 at 07:46 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Alcoa Corp Alibaba Group Holding Ltd Allstate Corp Amazon.com Cigna Corp Dean Foods Company Etsy Inc Express Scripts Holding Gsk Plc ADR Hertz Global Holdings Inc Mallinckrodt plc Marriott International Progressive Corp,Ohio Twilio Willis Towers Watson Public Ltd Zillow Grp Inc Cl A