Magnite, also known as Rubicon Project and Telaria, is a Publicly Owned company headquartered in the US. Founded in 2007, it employs approximately 720 individuals and reported $714.0M in revenue as of 2025. Functioning as a tier 1 media tech buyer, the company specializes in RTB and programmatic solutions. It operates as an ad tech company offering a sell-side advertising platform designed to enable monetization of publisher content across CTV, online video, display, and audio. Magnite acquired SpotX in April 2021 to enhance its CTV offering.

2025 Revenue

Founded

2007

Headcount

718

Headquarters

US

Primary Segment

RTB and programmatic

Ownership

Publicly Owned

Deployments

174

News Summary:

Magnite expanded its collaborations with Hearst News and AMC Global Media in mid-April 2026, aiming to power high-impact web, connected television (CTV), and live-streaming ad formats using its SpringServe, ClearLine, and Live Scheduler platforms. These partnerships are designed to embed Magnite's technology deeper into premium news and entertainment ecosystems, providing advertisers streamlined access to large, engaged audiences across linear TV, streaming, and digital video. Earlier in the week, Hearst News named Magnite its preferred deal partner for high-impact advertising formats across web and CTV inventory, concurrently initiating a new SpringServe platform partnership for video ad operations. Separately, Magnite recently partnered with Grain Group and Untapped Growth to unlock programmatic access to premium live sports streaming inventory, enabling advertisers to drive scalable performance and measurable business outcomes. This follows Magnite's April 23 announcement of new partnerships with AMC Global Media and Hearst News, which expanded Magnite's role in programmatic TV and video advertising across linear and streaming environments. At that time, AMC and Magnite specifically unified linear and streaming ad inventory for programmatic buying through ClearLine, addressing industry demand for streamlined cross-platform TV ad buying solutions, particularly as streaming had become AMC's largest domestic revenue source.

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Magnite offers 6 products in the media tech, ad tech and services and media and telecoms services industries. Magnite's product portfolio comprises of tV and streaming ad tech, marketer and agency technology, RTB and programmatic and search, social, and retail media.
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Magnite's revenues were $714.0M in 2025. Caretta Research has split Magnite's revenue into 4 different product categories, the largest of which is supply side platform (SSP), which represents 75% of Magnite's revenue.
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Magnite's customers primarily consist of entertainment Providers and telecoms companies. Examples of Magnite's customers include T-Mobile, Paramount Global and Charter Communications. Magnite has commercial and technical partners like Criteo, AMC Global Media and Omnicom Media Group.

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