Magnite Inc (MGNI) (Q3 2026) Earnings Call Highlights: CTV Surge and Political Ad Boom Drive ...

Negative Points

• DV+ growth remains modest at 5% year-over-year in Q3, with full-year 2026 growth expected to be roughly flat to low single digits, reflecting challenges in display advertising.

• International DV+ business faces challenges in some markets due to pricing pressures and economic backdrops, though streaming holds up relatively well.

• The open web is experiencing pressure from declining referral and search traffic, which could impact DV+ performance, though Magnite Inc ( NASDAQ:MGNI ) is partially hedged through mobile in-app and commerce media.

• Political advertising crowded out other advertising in Q3, and it remains uncertain how quickly non-political spend will recover post-election.

• Google remedies implementation timing is uncertain, with potential tech work estimated at 6-18 months, delaying any potential upside to DV+ from increased AdWords demand access.

Q & A Highlights

Q: Shyam Patil (Susquehanna) asked what underpins Magnite's long-term ~25% CTV growth target how much comes from already-won business ramping versus new business and how material the walled-garden deals like Pinterest and OpenAI could become. A: CEO Michael Barrett said the 25% target is roughly double the low-teens industry growth rate and is "aspirational and very attainable," driven by Magnite's market position and clients that expand globally alongside the company. On walled gardens, he said large brands with established ad businesses (Pinterest, OpenAI) tend to ramp quickly once they embrace third-party demand, while newer commerce media deals take longer.

Q: Dan Kurnos (StoneX) noted Magnite's political results were non-standard versus peers (even Roku) and asked about programmatic sports adoption and the next leg of international CTV growth. A: Barrett said sports is now "oxygen" for Magnite mainstream, transacting smoothly programmatically across college and pro, with innovations like pod-level DSP bidding eliminating advertiser conflicts. Internationally, DV+ faces pricing and macro pressure in some markets, but CTV remains healthy as Magnite follows Netflix, Paramount, and Disney into new markets, which tend to be programmatic-first.

Q: Barton Crockett (Rosenblatt) asked for confirmation of the reported OpenAI relationship and an update on Google antitrust remedy timing and how it could feather into revenue. A: Barrett confirmed Magnite is working with OpenAI as an SSP piping demand into OpenAI's advertising inventory, but deferred to OpenAI's public statement for further detail. On remedies, he said the company is awaiting Judge Brinkema's final order; Google estimates 1218 months of tech work versus industry estimates of 612 months, so item-by-item timing isn't yet possible. He remains pleased with the behavioral remedies and expects fairer auctions.

Q: Shweta Khajuria (Wolfe Research) asked how new product upgrades and partnerships will contribute incrementally to CTV growth, and what signals to watch for that Magnite will benefit from the ad tech case. A: Barrett said CTV growth is durable, with SpringServe as the technology tentpole lengthening Magnite's lead, and noted several signed deals haven't yet contributed meaningful revenue and will "light up in 2027." On the ad tech case, he said encouraging signals would include AdWords demand freed from the Google stack and AdX flowing through Prebid rather than outside it, with more specificity possible once the final ruling lands.

Q: Tim Nollen (SSR) asked whether ClearLine-driven direct connections increase Magnite's share of business, publisher performance, transaction volume, and take rate. A: Barrett said ClearLine operates exclusively on the Magnite platform, driving more spend to Magnite publishers at efficient pricing so more working media dollars reach them. It sits in every major holdco buyer marketplace, giving it access to a multi-hundred-billion-dollar spend pool; 20% of political demand flowed through ClearLine. Magnite charges a ClearLine fee, making it incremental ex-TAC on top of the publisher take rate.

Q: Matt Swanson (RBC) asked about the ex-political environment and whether political "crowding out" is easing given the supply glut. A: Barrett said the ex-political environment is very strong and seasonally solid, anchored by SpringServe as primary or programmatic ad server of choice. Political did crowd out other advertising, and how quickly that demand returns post-election is an unknown being watched closely, but he expects market strength to continue even ex-political.

Q: Jason Kreyer (Craig-Hallum) asked whether agentic capabilities are changing how buyers go to market and whether pent-up demand could accelerate in coming quarters. A: Barrett said there is lots of interest and testing but not much spend yet. Magnite built buyer and seller agents plus an orchestration layer for sophisticated partners with their own agents usage is roughly 50/50 and Magnite is agnostic. He expects 2027 to remain a year of exploration, but Magnite is positioned if adoption accelerates.

Q: Jason Kreyer (Craig-Hallum) asked whether pressure on open-web referral and search traffic is showing up in DV+ results. A: Barrett acknowledged the shift is real but said Magnite is hedged by deep commerce media penetration and mobile in-app, which isn't browser-based. He said DV+ numbers would be much stronger in a search-generated traffic world, but Magnite's portfolio weathers the transition better than individual publishers with greater exposure.

Q: Laura Martin (Needham) asked how AI is lowering costs and accelerating product velocity, and whether AI labs like OpenAI and Meta's Muse could become a major new ad demand category. A: Barrett said AI has collapsed the product development lifecycle from idea to market, calling the acceleration "breathtaking," and joked that go-to-market hasn't yelled at product all year. AI as an advertising category is growing and contributing to revenue, though not yet large enough to call out among top categories.

Q: Tyler DiMatteo (BTIG) asked how management thinks about organic growth potential for DV+ across mobile in-app and other segments. A: CFO Brian Gephart said display remains challenged while mobile in-app, commerce media, and audio are green shoots; overall, Magnite models DV+ as roughly flat to modest low-single-digit growth.

Q: Ethan Widell (B. Riley) asked about the scale of live sports contribution and positioning should the Fox-Roku deal close in the first half of 2027, plus what drove Q3 adjusted EBITDA OpEx savings. A: Barrett declined to break out sports spend but said it's a significant and rapidly growing chunk of transacted media already on the platform, with tech and media-owner willingness converging ahead of 2027. Gephart attributed OpEx savings primarily to cloud efficiency from on-prem investment, cutting cost per billion ad requests by over 50% year-over-year.

For the complete transcript of the earnings call, please refer to the full earnings call transcript .