Stocks making the biggest moves after hours: Amazon, Yum China, Cypress and more By: CNBC.com News January 31, 2019 at 17:13 PM EST See which stocks are posting big moves after the bell on January 31. Read More >> Related Stocks: AFLAC Amazon.com CVS Health Corp Cardinal Health Cigna Corp Cypress Semiconductor Deckers Outdoor Corp Symantec Corp United Health Products Inc Walgreens Boots Alliance Yum China Holdings Inc