Magnite

Largest independent omnichannel SSP globally, with leading position in CTV/streaming advertising

Magnite is the leading independent omnichannel sell-side platform (SSP) formed through the merger of Rubicon Project and Telaria in 2020, with subsequent acquisitions of SpotX and SpringServe significantly expanding its connected TV (CTV) capabilities. The company provides publishers, broadcasters, and streaming services with the technology to manage, sell, and optimize their advertising inventory programmatically across display, video, audio, and CTV formats. Magnite serves some of the world's largest media companies and publishers, processing billions of ad transactions daily. Magnite's platform enables publishers to access demand from a wide range of buyers including DSPs, ad networks, and direct advertisers, while offering advanced tools for yield optimization, audience targeting, and deal management. Its CTV business has become a major growth driver, positioning Magnite as a critical infrastructure provider for the rapidly expanding streaming advertising market. The company's SpringServe ad server and DV+ platform complement its core SSP offering, providing an end-to-end solution for publishers. In the AdTech ecosystem, Magnite occupies a strategically important position as a truly independent SSP — not owned by a major buy-side platform, walled garden, or media conglomerate. This independence is a key selling point for publishers concerned about conflicts of interest. The company competes with Google's Ad Manager, Xandr (Microsoft), and other SSPs, but differentiates itself through its scale, CTV specialization, and publisher-first approach. Magnite is publicly traded on NASDAQ and generates revenues primarily through a percentage of media spend transacted on its platform.