On September 2, 2026, a federal judge ruled that Google will not have to sell off its ad exchange, even while keeping the finding that Google illegally monopolized the publisher ad tech market. Instead of a breakup, Google got behavioral remedies. Here is what the ruling actually changed, and what it means for the money you run through Google Ads.
What The Judge Actually Ruled
U.S. District Judge Leonie Brinkema, in the U.S. District Court for the Eastern District of Virginia, upheld the April 2025 ruling that Google illegally maintained a monopoly over the publisher ad server and ad exchange markets. That part did not change. Google is still on the hook for the monopoly finding.
What changed is the punishment. The Department of Justice and a coalition of states asked the court to force Google to divest AdX, its ad exchange. Brinkema declined. She instead accepted most of the behavioral remedies that both sides had proposed.
Keep in mind, Brinkema did not publicly release her full opinion. She previewed the decision in a short filing, so the specific mechanics of the remedies are not all public yet.
What A Behavioral Remedy Actually Means
A divestiture would have meant Google selling the exchange to somebody else. A behavioral remedy means Google keeps the business but has to change how it runs it.
- Ending practices that depress publisher ad rates. The court is targeting the auction behavior that pushed down what publishers earned on their inventory.
- More information sharing with publishers. Publishers get more visibility into how the auction treats their inventory.
- Required changes to Google's ad tech business practices. The broad category that covers how the stack operates going forward.
Publishers pay Google a 20% fee to sell inventory through AdX. That fee is the center of the complaint, and it is the kind of thing a behavioral remedy is meant to pressure without breaking the company apart.
Google's Response
Google vice president Lee-Anne Mulholland said, "We're very pleased the Court rejected the DOJ's proposal to break apart tools that help small businesses reach new customers and grow."
This is the second time Google has avoided a forced divestiture across separate monopoly rulings. The pattern is becoming clear. Courts are willing to find that Google broke the law and still unwilling to take the business apart.
Why This Matters Less Than The Headline Suggests
If you buy display or run Performance Max, your instinct might be that something is about to change in your account. I would not plan around that. Behavioral remedies are slow, the full opinion is not out, and none of this rewires how you buy media next week.
It is also worth keeping the size of this business in perspective. Wedbush, working from court documents, estimated that Google's Ad Manager business was roughly 4.1% of Google's revenue and 1.5% of its operating profit in 2020. That is the piece of Google that was on the table. The search advertising business that most of your budget actually flows into was never part of this case.
One of the biggest mistakes I see is advertisers reading an antitrust headline and deciding their whole channel strategy needs rethinking. Your Display Network campaigns work the same way today as they did last week.
What I Would Do Right Now
- Nothing structural. Do not move budget or rebuild campaigns because of a court ruling with no published timeline.
- Watch your display and video CPMs over the next few quarters. If publisher economics shift, that is where you would see it first, not in Search.
- Keep your own measurement clean. The more the ad tech layer changes underneath you, the more you need your own numbers. Know which metrics actually matter in your account so you can tell a real shift from noise.
The good news? You have time. This is a story to follow, not an emergency to react to. Google has been in and out of court repeatedly, including when a court dismissed Google's lawsuit against SerpApi, and none of it has changed the day to day work of running campaigns yet.
Question to Answer:
If your display and video CPMs moved 15% over the next two quarters, would you be able to tell from your own reporting, or would you find out from a headline?
In Summary
Google keeps AdX. The monopoly finding stands, but the remedy is behavioral instead of structural, and most of the specifics are still not public. Nothing in your account changes because of this ruling.
Follow it, do not react to it. The practical move is making sure your own reporting is solid enough that you would notice if publisher economics actually shifted your costs.
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