Stocks making the biggest moves after hours: Kraft Heinz, Dropbox, Zillow and more By: CNBC.com News February 21, 2019 at 18:03 PM EST See which stocks are posting big moves after the bell on February 21. Read More >> Related Stocks: Baidu.com SP ADR Caesars Entertainment Inc Dropbox Inc First Solar Hewlett Packard Enterprise Comp Kraft Heinz Company Roku Inc Symantec Corp Zillow Grp Inc Cl A