Roundup: Amazon overtakes Walmart / Kim Mulkey / US home sales By Deanna B. Narveson - August 23, 2021 FacebookXLinkedinEmailPrint No. 1 retailer: Amazon has eclipsed Walmart to become the world’s largest retail seller outside China, according to corporate and industry data, a milestone in the shift from brick-and-mortar to onl… Already an INSIDER? Sign in.