SECURITY Signal 56
Judge rejects US antitrust enforcers' bid to force sale of Google's AdX, accepting behavioral remedies instead
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A Virginia judge declined to force Google to sell its AdX advertising exchange, opting instead for behavioral remedies after previously ruling the company holds illegal monopolies in ad tech.
Google avoids a forced divestiture of its AdX exchange, sidestepping a technically difficult and disruptive transition for publishers using the platform. The decision shifts the remedy to behavioral constraints rather than structural separation, meaning Google retains control of the ad server and exchange that the court found to be an illegal monopoly. This marks the third consecutive failure by US antitrust enforcers to break up Big Tech.
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Judge Leonie Brinkema declined to force Google to sell its AdX exchange, accepting most proposed behavioral remedies instead.
The judge previously ruled in April 2025 that Google holds illegal monopolies on publisher ad servers and ad exchanges by unlawfully locking publishers into using AdX.
Google successfully argued that a forced sale would be technically difficult, cause disruption, and hurt customers.
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