Inside the Amazon–Walmart Grocery Tit for Tat
Amazon (AMZN) captured 18% of the US online grocery market in 2017, double the market share of its closest competitor, Walmart (WMT), according to One Click Retail. Amazon’s rise in the grocery business poses a huge threat to traditional retailers such as Walmart, Costco (COST), and Kroger (KR), which rely on grocery sales for a substantial portion of their revenues.