Stocks making the biggest moves premarket: STZ, EGN, GSK, WMT & more By: CNBC.com News August 15, 2018 at 07:43 AM EDT Some of the names on the move ahead of the open. Read More >> Related Stocks: Agilent Technologies Berkshire Hathaway Biomarin Pharmaceuticals BlackRock Bluebird Bio Constellation Brands Diamondback Energy Energen Corp Express Scripts Holding GX Defense Tech ETF Gsk Plc ADR Lockheed Martin NVIDIA Corp Spark Therap Wal-Mart Stores, Inc. Western Digital Yum China Holdings Inc