→ Amazon extends absence from Google shopping listing to over eight months. arm, as of the end of Q1 2026, it has effectively been absent from US Google shopping auctions for over eight months of the pandemic in 2020. To the extent that Amazon's current play is a defensive move over sharing by Google's main Googlebot crawler and Amazon remains a frequent citation in both. Q1 2026, PMax campaigns accounted for 67% of total spending on Google shopping ad inventory while producing 68% of the sales those listings generated. Prior to this past quarter, advertisers have tended to generate a slightly lower return on ad spend (ROAS) for PMax campaigns, but that gap narrowed over 2025 with PMax taking a slight advantage to start 2026.