Hey,
Shopping performance doesn’t usually jump because of bidding.
It jumps when coverage improves.
Over the last month, overall Shopping impression share increased from 49% to 57% not by pushing budgets, but by fixing how products were surfaced.
The change came from one structural decision.
What the Data Shows
Looking at Auction Insights:
November impression share: 49.04%
December impression share: 57.06%
Net gain: +8 percentage points in coverage
This happened while competing against the same large retailers.
Period: Nov 1 - 30 | Channel: Shopping Auction Insights | Metric: Impression share
Period: Dec 1 - 24 | Channel: Shopping Auction Insights | Metric: Impression share
What Changed?
We didn’t increase bids or loosen targets.
We implemented a feed duplication strategy to fix coverage limitations.
Feed Duplication (Done Properly)
This was done with strict role separation to avoid cannibalization between Shopping and Performance Max. Instead of forcing one feed to do everything, we:
Duplicated the product feed intentionally
Segmented product sets by role and query behavior
Allowed Shopping and PMax to surface products more frequently across eligible auctions
This unlocked more eligible impressions without compromising efficiency.
Why This Matters
When Shopping underperforms, most teams react by:
Raising bids
Increasing budgets
Relaxing ROAS targets
That treats the symptom, not the cause.
In many cases, the real problem is:
Products aren’t entering enough auctions
Feed structure is limiting visibility
Coverage is capped before bidding even matters
Fix coverage first.
Then let bidding do its job.
What Happens Next
This improvement doesn’t peak immediately.
As feed structure continues to stabilize:
Coverage keeps expanding
Learning improves
Efficiency compounds instead of eroding
This is the kind of change that pays off over weeks, not days.
The Takeaway
Shopping scale isn’t only about how much you bid.
It’s about how often you’re eligible to compete.
When coverage increases, everything else gets easier.
If you’re spending $30K+/month on Shopping or Performance Max and feel capped by impression share, we run a 30-minute Shopping audit to identify:
Feed structure issues
Coverage blockers
Scaling opportunities before budget increases
Patrick
CEO, Ad-Lab