Magnite files antitrust lawsuit against Google over ad tech monopoly, citing April 2025 ruling

MAGNITE, INC.

Lawsuit filed Sep 16, 2025 in E.D. Virginia seeking financial damages and other remedies.
Based on April 2025 court finding that Google willfully engaged in anticompetitive acts in ad tech.
Magnite alleges Google locked publishers into its ad server and preferenced its own exchange.
Risk factor update warns of possible retaliatory actions by Google, a major partner and competitor.
Magnite (MGNI) represented by Kressin Powers LLC; full complaint available online.

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