Major U.S. publishers sue Google over ad-tech auction manipulation claims

Multiple major U.S. publishers filed separate federal lawsuits on Friday alleging that Google used its dominance in online ad technology to depress publishers’ advertising revenue through deceptive and manipulative practices.

Plaintiffs in the latest wave include Penske Media Corporation, Advance Publications, Vox Media, McClatchy and The Atlantic. Those filings follow related actions by Business Insider, People Inc., Slate, the Daily Mail and Gannett, as well as legal moves by ad‑tech companies such as PubMatic and OpenX. The suits are being brought in courts including the U.S. District Court for the Southern District of New York and other federal venues.

The complaints trace more than a decade of conduct they say allowed Google to steer auctions and undercut publishers’ ability to get competitive bids for their inventory. Central to the allegations is the contention that Google “tied” its publisher ad server to its ad exchange, forcing publishers to route increasing shares of their supply into Google-controlled systems and limiting the capacity of rival exchanges to compete. Plaintiffs say that practice, together with internal routing and auction changes, depressed clearing prices for publisher inventory and enriched Google at publishers’ expense.

The Atlantic’s complaint asserts that Google made $30 billion in 2022 from manipulating internet ad auctions, and several filings cite internal or industry data estimating that when ad exchanges competed head-to-head publishers’ clearing prices rose by roughly 40 percent. Plaintiffs argue that Google’s ad server, though marketed as a tool to maximize publisher revenue, in practice routed demand in ways that reduced what publishers received for ad space.

The new private suits build directly on a prior federal government victory. In April 2025 U.S. District Judge Leonie M. Brinkema concluded in the Department of Justice’s antitrust case that Google had illegally acquired and maintained monopolies in two online advertising technology markets, finding the company’s conduct was “exclusionary” and had “substantially harmed Google’s publisher customers.” That government trial moved to a remedies phase last year and remains an active backdrop for the private litigation, whose plaintiffs say they will rely on the evidentiary record developed there.

Plaintiffs are seeking monetary damages for lost ad revenue and injunctive relief to stop the enduring practices they describe. They argue that restoring competition in ad-tech markets or securing damages would not only offset immediate revenue shortfalls but also set a precedent for holding dominant platforms accountable and protecting publishers’ ability to invest in journalism.

The litigation unfolds amid wider industry upheaval. Publishers point to separate pressures including changes in search results that surface AI-generated content, disruptions to referral traffic and the prospect of new entrants from AI firms into digital advertising. Some news organizations have already pursued litigation or licensing deals with AI companies over use of their content.

Google has denied the core allegations in public statements and in filings in the earlier government case. The company maintains its ad technologies help publishers monetize online content and contends competition in advertising markets remains robust.

As the private suits proceed, courts will weigh complex technical evidence about auction mechanics, ad servers and exchange routing, even as publishers press for relief they say is necessary to sustain newsroom economics. The outcomes could reshape how digital advertising is bought and sold and test the limits of platform power in a media ecosystem still adjusting to technological change.