Walmart led US online grocery ordering, used by 59.2% of digital grocery shoppers, ahead of Amazon at 45.1%, according to Coresight Research. Online grocery penetration rose to 56.3% from 53.6% in 2025, reversing two years of decline. Two-thirds of shoppers primarily chose delivery, while nearly 38% completed most online grocery purchases through same-day or sub-two-hour services. (Supermarket News)