CommerceIQ: Prime Day 2026 ad spend drops 8.8% while conversion rate jumps 17.1%

CommerceIQ's first-look report on Amazon Prime Day 2026 reveals that while product page traffic fell 10.3% year-over-year and total ad spend dropped 8.8%, unit conversion jumped 17.1% and total ordered revenue declined only 1.7%. Brands maintained ROAS at 4.78x despite fewer shop