Walmart, Amazon and Apple top the 2021 Fortune 500 list — here’s what they have in common By: MarketWatch June 02, 2021 at 13:42 PM EDT Some retailers saw a pandemic boost, but 108 companies lost a combined $224 billion last year Read More >> Related Stocks: Amazon.com Apple CVS Health Corp UnitedHealth Group Wal-Mart Stores, Inc. Walgreens Boots Alliance