Magnite

Largest independent sell-side platform globally, with dominant position in CTV/streaming advertising

Magnite is the leading independent omnichannel sell-side platform (SSP) in the digital advertising ecosystem, formed through the merger of Rubicon Project and Telaria in 2020 and subsequently expanded via acquisitions of SpotX and SpringServe. The company provides publishers, broadcasters, and streaming services with the technology to manage, sell, and optimize their advertising inventory across connected TV (CTV), desktop, mobile, video, audio, and display channels. Magnite's platform enables publishers to access demand from a wide range of buyers including programmatic advertisers, agencies, and direct deals, while offering advanced tools for yield management, audience targeting, and analytics. Magnite holds a particularly dominant position in the CTV/streaming advertising space, which has become its fastest-growing and most strategically important segment. Its acquisitions of SpotX (from RTL Group for approximately $1.17 billion in 2021) and SpringServe (an ad serving platform) significantly bolstered its CTV capabilities and made it the go-to SSP for major streaming publishers. Clients include major media companies, broadcasters, and digital publishers worldwide. As an independent SSP — meaning it has no owned media or buy-side conflicts — Magnite positions itself as a trusted, neutral partner for publishers. The company is publicly traded on NASDAQ and competes with Google's Ad Manager, PubMatic, Index Exchange, and other SSPs. Its scale, CTV leadership, and independence are its primary differentiators in an increasingly consolidated AdTech landscape.