Glossary/Programmatic/Remnant inventory
What is remnant inventory in advertising?
What remnant inventory is, how it is sold, and how publishers make it worth more.
Written by Samhub with the help of AI·Updated 13 Oct 2026·3 min readRemnant inventory is the ad space left after direct campaigns have been served, usually sold through programmatic auctions or ad networks at lower prices.
Premium vs remnant
| Premium | Remnant | |
|---|---|---|
| Sold | Directly, in advance | Programmatically, in real time |
| Price | Higher | Lower |
| Share | Smaller | Often most of the inventory |
Why remnant earns less
Remnant is often sold without audience data, in the open auction, competing with similar impressions from many other sites.
16 pages for publishers, with a checklist for data, programmatic and direct sales.
Raise its value
Add audience signals
Known readers sell for more.
Package it in deals
Turn remnant into audience deals.
Use floors
Avoid selling below value.
CPM uplift at Stampen Media after activating first-party audiences with Samhub.
Frequently asked questions
Not necessarily. It is often the same placements, just sold differently.
Mostly through SSPs and ad exchanges.
Premium or guaranteed inventory sold directly.
Yes, with audience signals and deal IDs.
Related terms
The ad space a publisher has available to sell.
Programmatic auction open to any buyer.
The share of ad requests that get an ad.
Getting the most revenue from every impression.
The ad space buyers value most.
Samhub audiences let you set higher floors and win more data deals, in every channel you sell.
- A walkthrough with your own data
- Built for publishers and media houses
- 30 minutes, no commitment
Turn your audience data into more revenue
Get the Media Monetization Playbook: how media houses turn first-party data into higher CPMs, data deals and direct sales. With checklists for every step.
