Magnite's Q1 results show CTV crossing the 50% revenue threshold for the first time. The SSP is positioning itself as a beneficiary of agentic AI in programmatic, arguing that automated buying will increase platform transaction volume rather than disintermediate it.
Every adtech company says AI is an opportunity, not a threat. Magnite is one of the few with a structural argument for why that might actually be true.
Magnite reported Q1 2026 revenue of US$164.4 million, up 6% year on year. The headline number is less interesting than the mix shift underneath it: connected TV now accounts for 51% of net revenue, up from 43% a year ago. CTV has crossed the majority threshold for the first time.
The company also addressed the question that every adtech executive is being asked in 2026: what happens when agentic AI starts making media buying decisions autonomously?
Magnite's position is that agentic AI will increase transaction volume through its platform rather than bypass it. The logic: if AI agents can evaluate and execute programmatic buys faster than human traders, the number of transactions per campaign increases. More granular optimisation means more bid requests, more decisioning and more supply-side platform fees.
Of Magnite's net revenue now comes from CTV, crossing the majority threshold for the first time
The CTV growth is being driven by two factors. First, the expansion of ad-supported streaming inventory globally (Netflix, Disney+, Amazon Prime Video all scaling their ad tiers). Second, Magnite's integration with major CTV publishers through its SpringServe ad server, which gives it a structural position in the supply chain that pure exchanges do not have.
The 6% overall revenue growth is modest by adtech standards, reflecting pressure on display and mobile programmatic where competition from Google and Amazon remains intense. But the CTV trajectory is clear, and it carries higher take rates than standard display.
Why it matters
For Australian media buyers, Magnite's CTV milestone reflects a global shift that is playing out locally. Australian BVOD inventory is increasingly transacted programmatically, and the SSPs that control CTV supply have significant pricing power.
The agentic AI argument is worth tracking. If Magnite is right that automated buying increases transaction volume, the economics of programmatic fees change. Advertisers would pay lower CPMs (more efficient buying) but higher total platform fees (more transactions). The net effect on advertiser costs is unclear and will depend on how quickly AI-driven optimisation translates to measurable performance gains.
What to do about it
Programmatic CTV is no longer the emerging channel. It is the dominant one. Plan accordingly.