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Rubicon Project

Rebranded

Los Angeles, California, United States · Founded 2007

501-1000 employees · RUBI

Sourced & current · updated Jun 10, 20262 of 5 facts verifiedWebsite

Rubicon Project was a leading programmatic advertising technology company that operated one of the largest independent sell-side platforms (SSP) for digital publishers before merging with Telaria in 2020 to form Magnite.

Where they sit

Stack tier: Core Platforms (S)

Supply Side Platform (SSP)Programmatic Platform

Was one of the largest independent SSPs globally before merging to form Magnite; its technology now underpins Magnite DV+

Ownership

Parent: Magnite

Competitors

Recent moves

Pre-call brief from ATDb — sourced from the live database, current as of Jun 10, 2026. Not a static screenshot.