Numerator said grocery hit a four-year low during Amazon Prime Day 2026, with 16% of Prime shoppers buying the category, down from 22% in 2025. Grocery trailed apparel, household essentials, health and wellness, beauty and home goods, despite Amazon promoting fresh food, meat and deli deals from USD1 to USD3. Protein powder and pet treats were among top-selling items. (Grocery Dive)