(FILES) In this file photo taken on July 15, 2020 people sit outside a Walmart store in Washington, DC. - Walmart lifted its full-year forecast on August 17, 2021 following another solid performance at its US stores in the second quarter even as e-commerce growth slowed compared with earlier in the pandemic. The giant US retailer cited an especially good performance in its grocery business as it reported a 2.4 percent increase in revenues to $141 billion. (Photo by ANDREW CABALLERO-REYNOLDS / AFP)