Judge Brinkema keeps Google's ad exchange intact and orders practice changes

A federal judge in Virginia told Google on 2 September to change how it runs its advertising technology stack and refused the Justice Department's request to force a sale of AdX, the exchange that matches publishers with advertisers in real time.

Judge Leonie M. Brinkema of the Eastern District of Virginia previewed the result in a short public note. The full opinion stays sealed for 14 days so the parties can propose redactions. She wrote that she was granting most of the behavioural remedies the government and the company had already put on the table. She did not order Google to spin off AdX or the publisher ad server known as DoubleClick for Publishers.

The decision is the second time in a year that a U.S. court has found Google liable for monopoly conduct and then declined to break the firm apart. Last year Judge Amit Mehta in Washington refused a government bid to force a sale of Chrome and Android after a separate search case. Alphabet's market value on the day of Brinkema's note stood at about $4.11 trillion. Analysts put the parent company's total advertising sales near $400 billion a year. Politico put the ad-exchange business itself at about $95 billion. Company filings project overall 2026 revenue near $239 billion.

What the liability finding already said

Brinkema ruled in 2025 that Google illegally tied AdX to its publisher ad server. Publishers who wanted the exchange's demand had to keep using Google's server to manage inventory. The court found that the bundle made it hard for a publisher to leave. She did not accept the government's claim that Google also monopolised the tools used by advertisers on the buy side.

The Justice Department argued at a two-week remedies hearing that only a sale of AdX would open the market. Google argued that a forced split would damage tools used by small advertisers and that conduct rules could restore competition without cutting the company in two.

Lee-Anne Mulholland, Google's vice president for regulatory affairs, said the company was pleased the court rejected a breakup of tools that help small businesses reach customers. A Justice Department spokesperson said the Antitrust Division was pleased the court ordered substantial relief. Neither statement listed the specific practice changes.

What the sealed order is likely to touch

The public docket does not name the accepted remedies. Coverage of the hearing listed proposals that have circulated for years: limits on self-preferencing inside auctions, a duty to give rival ad-tech firms the same real-time data Google's own tools receive, and restrictions on contracts that lock a publisher into both the server and the exchange.

Until the redacted opinion appears, publishers cannot plan a switch. Ad buyers cannot price a change in take rates. Rivals cannot file a follow-on complaint with precision. The 14-day seal is therefore itself a market fact. It freezes operational planning while Google's systems keep running as they did on Tuesday.

Why the numbers matter more than the adjectives

Web publishers have complained for a decade that Google sits on both sides of the auction and keeps a large share of each dollar. Brinkema accepted that structure as an illegal monopoly in parts of the stack. She then treated a sale as disproportionate. The practical result is that Google keeps the profit centre and must alter how that centre behaves.

That split between liability and remedy now looks like the U.S. pattern for this company. A court finds a violation. The government asks for structural relief. The court writes conduct rules. Google retains the asset. The company can still appeal the underlying monopoly finding once the sealed opinion is public, as it has already done in the search case.

For Indian and other overseas publishers who sell through Google's tools, the Virginia order does not change invoice flows this week. It does change the legal baseline. A U.S. district court has now said the tying arrangement was unlawful and that some of the government's proposed practice changes will be mandatory. The exact list arrives after the redaction window.

The open question is whether those practice changes move enough money to publishers to justify the years of litigation, or whether they leave the same exchange in place with new paperwork. The sealed pages will decide that, not the two-page note released on Wednesday.