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Federal judge rules Google will not be forced to sell its ad exchange

A US district court rejected the Justice Department's divestiture demand following an ad tech antitrust ruling, opting instead for behavioral remedies.

The short version

  • A US federal judge ruled that Google will not be required to divest its AdX advertising exchange following an antitrust lawsuit.
  • The decision impacts the Department of Justice, a coalition of states, and digital publishers who use Google's ad tech ecosystem.
  • While avoiding a forced breakup, Google will be subject to behavioral remedies requiring changes to how its advertising tools operate.
  • The full details of the mandated behavioral remedies remain temporarily under seal as the involved parties review the ruling.

Key facts

  • US District Judge Leonie Brinkema rejected a request from the Department of Justice to force Google to sell its AdX ad exchange.[Ars Technica · Engadget]
  • The ruling followed a 2025 finding that Google illegally monopolized ad tech markets by forcing publishers that host ads on its servers to use AdX.[Ars Technica · Engadget]
  • The court accepted undisclosed behavioral remedies, which Bloomberg reported will require Google to open its ad tech tools to competing firms.[Engadget]
  • The DOJ and eight states initiated the antitrust lawsuit in 2023, claiming Google controlled an 87 percent share of the ad-sales technology market.[Engadget]
  • While the court previously determined Google broke the law regarding publisher lock-in, it rejected government claims that Google violated antitrust laws concerning advertiser tools.[Ars Technica]

What remains uncertain

  • The exact terms of the behavioral remedies have not been officially publicized because the court issued the decision under seal to allow the parties to propose redactions.[Engadget]

Sources