Judge Spares Google's Ad Exchange From Breakup, Orders Behavioral Fixes Instead

Judge Leonie Brinkema of the U.S. District Court for the Eastern District of Virginia ruled on September 2, 2026 that Google will not be required to sell its AdX ad exchange or its DFP publisher ad server, rejecting the Department of Justice's push for a structural breakup of Google's ad tech business. Instead, she ordered behavioral remedies — obligations that change how the open-web display auction operates without changing who owns the underlying systems.

The Three Practices Being Ended

• 'First look' — the practice that gave Google's AdX exchange the first opportunity to bid on every publisher impression before competing exchanges could see it
• 'Last look' — which allowed AdX to see the highest competing bid before submitting its own, a structural information advantage over rival exchanges
• The 2019 Unified Pricing Rules, which had prevented publishers from setting higher minimum prices for AdX than they set for rival ad exchanges

Why the Judge Chose Behavioral Over Structural Remedies

The ruling adopted most of the behavioral remedies that both the DOJ and Google had separately proposed — meaning the two sides found more common ground on behavioral fixes than the more dramatic structural-breakup outcome regulators had originally sought. A full sealed opinion explaining Judge Brinkema's detailed reasoning is expected within 14 days of the September 2 order.

What This Means for Publishers and Advertisers Using Google's Ad Stack

For publishers, the end of 'first look,' 'last look,' and Unified Pricing Rules removes three specific mechanisms that gave Google's own exchange a structural advantage in auctions run on Google's platform — a genuine, concrete change to auction dynamics even without a change in ownership. For advertisers and publishers with ad tech decisions tied to Google's ecosystem, the practical next step is watching how quickly these specific rule changes are implemented and whether third-party ad exchanges see measurably fairer access to Google-run auctions as a result — the ruling changes the rules of the game, not who runs it.