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The court ended first look, last look and mandatory uniform floors, but Google still owns both the ad server publishers depend on and the exchange it feeds, which makes AdX's decade-old 20% take rate the test.
The Investor · Invest desk
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The cheapest way to see what the court took away is to price the penny. Under last look, AdX could read the best bid arriving from a rival exchange and beat it by a single cent, with no risk of overpaying [8]; on an impression clearing at a dollar, where the exchange's fee was twenty cents [4], certainty of winning cost five percent of the fee that win generated [1]. Priced that way, last look functioned as a cheap option rather than a competitive bid, and the party holding the option also owned the server that decided which bidders saw the impression in the first place [12].
What is not prohibited is the arrangement that made the mechanics pay. The April finding said the two assets were used to lock publishers in both directions, dependence on DFP pulling them into AdX and advertiser demand on AdX pulling them back into DFP [5], and both remain under one owner [3]. Rival ad servers still split under nine percent of impressions served [4], which is the leverage publishers bring to their new freedom to set different floors for different buyers [13].
So a monitor now polices conduct inside a market whose ownership map is unchanged, even though the government's closing argument was that conduct "buried in computer codes and algorithms" would not yield to promises [7]. The two timelines put the mismatch in plain view: the DOJ wanted a three-year checkpoint with a contingent divestiture attached to it [6], while Google offered six years of compliance monitoring [10], twice as long, built entirely on conduct rules rather than any structural change [3]. And the volume that monitor inherits, on Google's own figure of 55 million ad requests per second [9], is roughly 4.75 trillion requests a day [2].
This is probably wrong, but the number I would hold the remedy to is the take rate. Twenty percent survived more than a decade because the auction was not really an auction [4], so if fair sequencing and differentiated floors work as the court expects, rival exchanges should start winning impressions on merit and that fee should compress. The conduct relief could bite, publisher yields could rise, and the structural argument turns out to have been unnecessary. Or Google complies to the letter, yields do not move, and the monitor's reports become the only lever anyone has. Or the sealed opinion, public in fourteen days, and the jointly proposed judgment due in thirty [15] turn out to contain reporting machinery the short order did not reveal, in which case the remedy is stronger than it currently looks. Twenty percent is the scoreboard.
Ranked by verification strength, evidence, and original report placement.
On Tuesday, US District Judge Leonie Brinkema of the Eastern District of Virginia ordered Google to overhaul the specific auction practices her April 2025 ruling had identified as instruments of illegal monopoly power, and declined to order a forced sale of its ad exchange.
The April 2025 liability ruling found Google had illegally monopolized the publisher ad server market, where it held roughly 91% of worldwide market share as measured by impressions served, and the open-web display ad exchange market, under Sections 1 and 2 of the Sherman Act.
Google keeps ownership of both DoubleClick for Publishers (DFP), the dominant platform websites use to manage and sell ad inventory, and AdX, the dominant exchange those auctions run through.
AdX had charged a consistent 20% take rate on every transaction for over a decade without competitive pressure to reduce it.
Brinkema found Google had illegally tied the two markets together, using publishers' dependence on DFP to lock them into AdX, and using advertiser demand on AdX to lock publishers into DFP.
The Department of Justice had asked Brinkema to order sale of AdX within twelve months, the open-sourcing of DFP's final auction logic under a neutral administrator such as Prebid.org within twelve months, and a contingent divestiture of remaining ad server components if market competition did not recover within three years.
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1 article · September 3, 2026
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Evidence-backed comparisons of source perspectives and observed adoption signals. Read the methodology
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One outlet, and the order itself is sealed
Every specific here — the 20% take rate, the 55 million requests per second, the twelve-month divestiture clock the DOJ asked for — reaches readers through Tech Times, which in turn credits AdExchanger for the pricing-rules detail and the Index Exchange complaint for the 2010 first-look history. The document that would settle exactly what Google must now do is sealed for fourteen days, so the most consequential provision, real-time bid sharing with rival ad servers, exists in our coverage as a single paraphrased sentence.
Prohibited on paper, unchanged in the stack
Nothing in this reporting shows a single auction clearing differently yet. First look and last look are barred and Unified Pricing Rules are ordered deprecated, but the parties still have thirty days to draft the judgment that operationalises any of it, and Google walked out of the remedies trial owning the same ad server and the same exchange it walked in with. The measurable footprint in the story is the incumbent's: 91% of impressions served, and a fee that has not moved in ten years.
Deflates itself, then leans on a sealed order
Credit where it is due: the headline framing puts the limits of the ruling ahead of the ruling, and the closing passage says plainly that whether real-time bid access solves anything will be decided in practice rather than in court. The overshoot is smaller and more technical — stating with flat certainty what an opinion nobody has read requires, and calling three prohibitions a change to 'the rules of every online ad auction' while the 20% fee those rules fund goes unmentioned in the remedy.
Built almost entirely from two opponents' briefs
Strip out the litigants and little narrative is left. The unworkability-at-55-million-requests argument and the free-DFP-for-small-publishers concern are Google's own; 'root and branch' and the algorithms-you-cannot-trust line are the DOJ's closing rhetoric; the one outside voice, Jay Friedman, testified for the government and co-founded an advisory firm that sells to the publishers who stand to gain from a harder remedy. The 2010 first-look chronology comes from Index Exchange, a rival exchange suing Google. None of that makes the facts wrong, but no disinterested party is quoted anywhere in this story.
Direction firm, particulars provisional
That Brinkema barred the three mechanics and refused to break up the business is about as safe as a single-source report gets — it is the kind of outcome a short public order states unambiguously and that no one would misread. Confidence drops on everything downstream: the exact bid-sharing obligation, how compliance gets policed, and whether any of it dents a 20% fee. Read the direction as settled and the mechanics as subject to revision when the opinion unseals and the joint judgment lands.