Judge Brinkema Spares Google's Ad Business From Breakup, Orders Six-Year Behavioral Overhaul Instead

U.S. District Judge Leonie Brinkema in Alexandria, Virginia, issued a short order on September 2, 2026, rejecting the Justice Department's push to break up Google's advertising technology business. She kept her full 106-page opinion sealed for two weeks so both sides could flag confidential business details. Neither side asked for redactions, so she unsealed it on Wednesday, September 16.

Google keeps AdX, its ad exchange, and DoubleClick for Publishers (DFP), its publisher ad server. No forced sale. No breakup.

What Google Has To Change

Instead of divestiture, Brinkema ordered a package of behavioral rules that will run for six years, far short of the 15 years the Justice Department and a coalition of states wanted. The restrictions apply globally, according to BigGo Finance.

Google must connect AdX and DFP to Prebid, the open-source header bidding system rival exchanges rely on, so Google's own bids compete on the same footing as everyone else's. It has to send live AdX bidding data to competing publisher ad servers on the same terms it gives its own server. It must let publishers download their own auction data, something Google has controlled tightly for years. And it can no longer force publishers who use DFP to also use AdX, the bundling arrangement that let Google's exchange ride on its ad server's market share.

Google also has to accept an independent antitrust compliance monitor for the six-year term.

Brinkema explained her reasoning directly in the opinion: "structural remedies are neither realistic nor needed," and the behavioral package "will be sufficient to effectively pry open to competition the ad tech markets that were injured by Google's unlawful conduct, and prevent Google from reverting to anticompetitive conduct in these markets."

How We Got Here

This remedies ruling closes out the liability phase of United States v. Google LLC, filed in 2023. Brinkema found in April 2025 that Google illegally monopolized both the publisher ad server market and the ad exchange market, and unlawfully tied the two products together. The Justice Department, per BNN Bloomberg, had argued the arrangement was like "Goldman Sachs owning the New York Stock Exchange" — Google simultaneously ran the platform publishers use to sell ads and the exchange where the trades happen, while also commanding massive advertiser demand. Government lawyers argued Google could not be trusted to run the exchange fairly given that history.

Google countered that a forced sale would be technically unworkable and would harm the small publishers and advertisers who depend on its tools. Judge Brinkema pointed out at closing arguments that no buyer for AdX had even been identified.

This is the second major swing at breaking up a piece of Google's business to come up short. A separate case over Google's search monopoly, decided by Judge Amit Mehta in September 2025, also declined to force a sale — in that instance of Chrome and Android — though it did order Google to end exclusive default-placement deals and share some search data. Google is appealing those remedies. TechCrunch also notes a separate case against Meta's social media business ended with the government losing outright, a pattern BNN Bloomberg describes as "mixed" results for the broader federal push against Big Tech.

Google plans to appeal the underlying liability finding in the ad-tech case too, according to BigGo Finance.

The Case For More, and the Case Against

The Justice Department's core worry, laid out through the case, is that behavioral rules on a company this large and technically integrated are hard to police. A monitor can check boxes; it can't necessarily stop a company with Google's data advantages and market position from finding new ways to tilt the playing field. The National Law Review frames the unresolved question plainly: whether court-ordered conduct rules can actually restore competition in a market where scale and integration are the whole advantage, or whether they just create "another long-running supervisory framework" without changing who owns the pipes.

Google's counter, echoed by VP for regulatory affairs Lee-Anne Mulholland in comments to TechCrunch, is that the DOJ's ask amounted to overreach that would have broken tools "that help small businesses reach new customers and grow." Brinkema herself weighed the length and uncertainty of an appeal, plus the risk of disrupting publishers and small advertisers who rely on Google's ad infrastructure, in choosing the lighter remedy.

A piece from Gokhshtein cited a same-day Alphabet share price of $347.56 and specific remedy details described only as things that "likely include" data-sharing and interoperability mandates. That hedged language doesn't match the concrete provisions laid out in the unsealed opinion itself, which other outlets, including BigGo Finance and the National Law Review, quote directly.

The two sides now have 30 days from the September 2 order to submit a joint proposed final judgment spelling out exactly how the monitor and compliance regime will work. That document, not this ruling, will determine whether Google's ad auctions actually change or whether the rules amount to paperwork.