PMax Sub-Channel Reporting Arrives at Asset Level
PMax now reports by sub-channel (Search, YouTube, Display, Discover, Gmail) at asset level — the black box opens a window it never had.
Late May 2026, PMax's asset-level reporting gained sub-channel breakdowns (Search vs YouTube vs Display vs Discover vs Gmail), giving advertisers a first real look at where automated budget actually went.
What you need to know
The update in four points:
- Assign performance above campaign level to channels
- Asset-level + channel cross-tabs expose waste pockets
- Discovery for some verticals is notoriously thin — now visible
- Still sampled in places; use as steering, not court evidence
What this means for advertisers
PMax's deepest complaint was opacity. Sub-channel reporting finally lets optimisers argue with the algorithm using data instead of vibes — then decide whether YouTube or Search is really earning the budget.
Next step
Pull sub-channel breakdowns monthly, identify persistent dead pockets (e.g., low-converting Discover), and adjust creative or exclusions. If Search dominates converts, feed it more asset themes.
Platform updates move budgets. Get the playbook applied to your campaigns with a free ad audit from ADZBE (Bengaluru & Hyderabad) — Google Ads, Meta Ads, ChatGPT Ads, JioHotstar, LinkedIn and Moj.
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