Glossary/Adtech & Programmatic/Sell-Through Rate
Adtech & Programmatic
Sell-Through Rate
The percentage of a publisher's available inventory that was actually sold over a given period.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
Sell-through rate is the percentage of a publisher's available ad inventory that was actually sold over a given period. It is calculated by dividing sold impressions by total available impressions. A high rate indicates strong demand, while a low rate may signal pricing, packaging, or audience issues the sales team needs to address.