Study: COVID-19 propels Amazon to top U.S. grocery retailer

Amazon came out on top in an annual study of the U.S. grocery market. The online giant placed first in the fourth annual dunnhumby Retailer Preference Index (RPI), a nationwide study that examines the approximately $1 trillion U.S. grocery market. In a year dominated by COVID-19, Amazon eclipsed last year’s winner H-E-B and runner-up Trader Joe’s to take the top spot as shoppers focused on speed and e-commerce.