Stocks making the biggest moves premarket: WMT, GM, CAVM, VZ, QCOM & more By: CNBC.com News November 20, 2017 at 08:29 AM EST These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Cavium, Inc. - Common Stock General Motors Goldman Sachs Group Marvell Technology Inc Wal-Mart Stores, Inc.