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Rubicon Project

Rubicon Project

Rebranded

Los Angeles, California, United States · Founded 2007

501-1000 employees · RUBI

Sourced & current · updated Oct 13, 20262 of 5 facts verifiedWebsite

Rubicon Project, now operating as Magnite, was an American online advertising technology firm based in Los Angeles, California, formed through a merger with Telaria in 2020.

Where they sit

Stack tier: Core Platforms (S)

Supply Side Platform (SSP)Programmatic Platform

Was one of the largest independent sell-side platforms (SSPs) in programmatic advertising before merging with Telaria to form Magnite, the world's largest independent omnichannel SSP

Ownership

Parent: Magnite

Subsidiaries

Competitors

Recent moves

Pre-call brief from ATDb — sourced from the live database, current as of Oct 13, 2026. Not a static screenshot.