Skip to content
Full profile
R

Rubicon Project

Rebranded

Los Angeles, California, United States · Founded 2007

501-1000 employees · RUBI

Sourced & current · updated May 29, 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, serving premium publishers and competing directly with Google Ad Manager, Index Exchange, and PubMatic before becoming part of Magnite.

Ownership

Parent: Magnite

Competitors

Recent moves

Pre-call brief from ATDb — sourced from the live database, current as of May 29, 2026. Not a static screenshot.