Absolute top impression share lost to rank
also called Rank-lost absolute top IS
Definition
The share of available auction impressions in the first ad slot that you did not receive because your ad rank was too low.
Scope, grain and dimensions
- Grain
- One number per segment and date range, or one row per keyword or campaign.
- Dimensions
- keyword · campaign_name
- Required filters
- segment_id · date_range
- Aggregation
- An unweighted average across keyword-day rows.
- Metric type
- share · share of available auction impressions (stored 0 to 1, shown as a percent)
Data sources
Skills and analyses that use it
Skills carry the judgment; the analysis verbs do the reading.
Skills
Analysis verbs
paid_impression_share
Method rungs and levers
A rung tells you what a movement here can and cannot explain, read the rungs below it first.
levers L8 Paid/organic interplay
Ask Quattr
- "Are we losing the first ad slot to rank?" Simulate this →
Caveats, freshness and failure modes
The semantic layer averages Google Ads' own per-row rank-lost absolute-top share; nothing is recomputed here.
Rank-lost only, the budget-lost equivalent is not measured on this dataset.
The response key drops the rank qualifier; carry it in the sentence.
Always per segment; unweighted average across rows; stored as a fraction between 0 and 1.
- Freshness
- ~1 day behind, Ads reporting settles overnight; same-day spend is provisional.
Common failure modes
- Treating this as total lost first-slot coverage.
- Reading a rise in this number as an improvement because a direction oracle painted it green.
Not the same as
The confusions that cause the most wrong decisions.
Absolute top impression share lost to rank Absolute top impression share Compare definitions →
One is the first slot you won; this is the first slot you lost on rank. Separate columns, not complements.
Related metrics and workflows
Verification
A definition is the smallest part of this.
The measurement matters because something acts on it. Here is the rest of the showcase, in the order most people find useful.