Following an earlier court battle, a judge has ruled that Google will not be required to sell its AdX ad exchange business. Instead, the court ordered undisclosed behavioral remedies that Google must follow. This development affects the long-running antitrust dispute over Google’s advertising practices and alters the remedies the government sought to impose.
Reports from major outlets indicate that Judge Leonie Brinkema rejected the Department of Justice’s request to force a sale of AdX and to make the auction mechanics behind ad placements public. The decision means Google keeps ownership of AdX, though the court’s remedy will focus on behavioral changes aimed at addressing the antitrust concerns identified in prior rulings.
The change in remedy is significant because the government had argued a structural solution — selling the ad exchange — was necessary to restore competition in the digital ad market. Instead, the court opted for behavioral measures. Those measures have not yet been disclosed publicly, but they are intended to limit practices the court found harmful to competition while allowing Google to retain its ad exchange business.
Both Google and the DOJ will have an opportunity to review the written opinion before it is unsealed. The court has allowed a 14-day period for redactions, during which sensitive business information or proprietary details may be removed. Once the decision is unsealed, it should provide clearer guidance on the specifics of the behavioral remedies and how they will be enforced.
This outcome represents a partial victory for Google. A prior 2025 ruling concluded that Google had violated antitrust law to protect its advertising monopoly, creating the legal foundation for remedies. However, the latest order shifts the response from a forced sale toward conduct-based limits. Industry analysts note that while AdX is not the largest component of Google’s ad business, forcing a sale could have had ripple effects across the company’s broader advertising ecosystem.
The judge’s decision to forgo a structural remedy in favor of behavioral ones will be closely scrutinized by competitors, publishers, advertisers, and regulators. Behavioral remedies typically require ongoing oversight and compliance mechanisms to ensure that a dominant firm changes its conduct effectively. How the court plans to monitor compliance and what penalties will be imposed for violations are among the critical questions the unsealed ruling may answer.
For publishers and advertisers, the ruling could mean changes in how ad inventory is auctioned and how Google integrates its various ad technologies. The behavioral fixes may include rules designed to prevent self-preferencing or to ensure more transparent access to ad inventory for rival ad tech providers. Until the redacted opinion is made public, stakeholders must wait to learn the precise limits and obligations imposed on Google’s ad business.
Regulators and lawmakers will also be watching the implementation of any behavioral remedies. If the remedies fail to restore meaningful competition, or if enforcement proves difficult, policymakers might pursue additional regulatory or legislative options. Conversely, if the behavioral changes lead to measurable improvements in market access for rivals and fairer outcomes for publishers and advertisers, courts and regulators could view this approach as a viable alternative to breaking up large platforms.
In summary, the court rejected the Department of Justice’s demand that Google sell its AdX ad exchange. Instead, it imposed undisclosed behavioral changes and allowed a 14-day period for redactions before the decision is unsealed. The specifics of those remedies and how they will affect the digital advertising market will become clear once the written opinion is made public.