The story. Magnite reported third-quarter growth of 20% to $200.6 million, with CTV up 39% and now 53% of the business, and told investors it uses agentic workflows to sell LG TV home screen inventory. (AdExchanger, 6 November 2026)
The numbers in this piece
01What happened
- Growth was 20% year over year. AdExchanger gives the Q3 figure as $200.6 million. Its roundup text calls it revenue, while the feed summary calls it ex-TAC revenue, and we could not reach Magnite’s release to settle the label.
- CTV is the engine. CTV revenue rose 39% and now makes up 53% of Magnite’s total business, a share that has grown steadily.
- Agents are in the sales workflow. On the call, executives said they use agentic workflows to sell LG TV home screen inventory.
- The inventory is non-standard. AdExchanger notes agentic buys can cover formats not yet standardized for programmatic, such as home-screen ads, pause ads and smart TV tiles.
- SpringServe is being repositioned. Magnite describes it as a programmatic and mediation platform, not only an ad server. CEO Michael Barrett called Magnite “the operating system for CTV monetization.”
For scale, Magnite had guided third-quarter contribution ex-TAC to $188 million to $192 million, per coverage of its second-quarter call. If $200.6 million is that same measure, it is a clear beat. The label problem above is why we do not state it.
02What it means inside a GAM network
The figure that matters to a publisher is the CTV share. When more than half of an SSP’s business is CTV, its product roadmap, support queue and fee conversations lean toward CTV. Publishers with display and video pay attention to that shift because it shapes where an SSP puts engineering time.
The agent point is narrower. Home screens, pause ads and tiles are formats where there is no standard way to describe the unit, so a human has traditionally negotiated each deal. An agent that packages and sells them can scale that work. It can also standardize it on the SSP’s terms. Who sets the floor, who writes the unit description and who sees the buyer’s bid are the real questions, and the roundup does not answer them.
One caution on scope. This is a summary of an earnings call as relayed by one outlet. It does not show whether agentic selling raised prices or fill for anyone.
Magnite's report says CTV is where the money is, and that selling it is moving toward software.
03What publishers should do about it
04The bottom line
Magnite’s report says CTV is where the money is, and that selling it is moving toward software. Publishers do not need to resist that. They need to know what the software is allowed to decide.
If you want a second opinion on your SSP mix and floor setup, see our programmatic yield work.