Meta description: Guideline data shows four DSPs hold 85% of programmatic spend in Q1 2026, with Amazon nearly doubling its share in 15 months as Trade Desk stagnates globally.
A new set of spending figures from Guideline, the ad intelligence firm that tracks major holdco and independent agency budgets, reveals just how thoroughly four demand-side platforms have come to dominate global programmatic advertising. The data, discussed publicly on May 6, 2026, in the Media Unfiltered Podcast, shows the top four DSPs - Google's DV360, The Trade Desk, Yahoo, and Amazon - now controlling approximately 85% of the global programmatic market. In 2022, those same four players held around 75%.
What changed in between is not evenly distributed. Amazon's trajectory stands apart.
Sean Wright, chief insights and analytics officer at Guideline, laid out the numbers on the podcast hosted by Justin Lebbon. According to Wright, Amazon went from under 10% of market share in Guideline's dataset to just under 20% in roughly fifteen months. That is nearly a doubling of share within a year and a quarter. Meanwhile, The Trade Desk - long considered the independent DSP of record for agencies - is, according to Wright, "essentially growing at exactly the market rate," meaning it is holding share rather than gaining it.
The picture becomes sharper when broken down by geography. Globally, The Trade Desk saw approximately 13% growth in Q1 2026. But in the United States, growth has come down to "pretty low single digit" levels, Wright said. Given that the US is by far the largest single programmatic market, those diverging trajectories matter. The global figure looks healthier than what is actually happening in the market that counts most.
Ian Whittaker, who advises CEOs and investors on media economics and who published a LinkedIn analysis tied to the same Guideline data, framed the situation in terms of historical pattern. "Phase one was the big three - Google's DV360, Amazon and TTD - taking share against the long tail," Whittaker wrote. "The top three DSPs accounted for over 90% in Q1 2026 of the market vs 70% in 2022." He described a second phase now underway: the structural squeeze on The Trade Desk specifically. "In the past 18 months, Amazon and Google have both increased share while TTD has stagnated. Both the former have a material advantage as they sit within broader stacks with cross-subsidies that can absorb margin compression - which TTD does not have."
Guideline's chart, shared alongside Whittaker's LinkedIn post, shows the breakdown in percentage points across calendar years. Google's DV360 held 34% in CY-2022, rising to 41% in Q1 2026. The Trade Desk went from 22% in CY-2022 to 31% in Q1 2026. Yahoo held at 5% in Q1 2026, down from 9% in CY-2022. Amazon climbed from 14% in CY-2022 to 19% in Q1 2026. The "remaining" category - all other DSPs combined - collapsed from 21% in CY-2022 to just 5% in Q1 2026. Guideline estimates 45% of smaller DSPs have lost market share over the last four years to one of the four dominant players.
The competitive mechanics behind Amazon's rise are not subtle. Amazon has been undercutting rivals on price, charging a 1% fee for open web publisher ads and no fees for programmatic guaranteed deals on its own media. The Trade Desk's ad tech take rate is reported to be around 20%. That fee gap, combined with Amazon's unique first-party retail data, has given agencies a straightforward economic argument for shifting spend. Whittaker notes that "the agency commentary - Publicis publicly distancing itself from the platform, and the leaked Holdcos memos describing Trade Desk as a difficult partner - provides cover for buyers to switch."
PPC Land has tracked the Publicis-Trade Desk dispute in detail, including the FirmDecisions audit that found The Trade Desk had allegedly improperly applied fees and withheld validation data. That episode, combined with Omnicom's reported programmatic budget shifts, gave the story legs well beyond a simple commercial disagreement.
Alongside the DSP data, the podcast examined what Wright described as perhaps the defining oddity of the past decade in advertising: Meta's ability to absorb one scandal after another without meaningful advertiser defection.
Wright said Guideline examined Meta's ad spend history going back to 2009, cross-referencing known controversy events against revenue trends. The result is consistent. "In the quarter after these scandals hit, revenue is still up on average 21%," he said. Looking at Guideline's own agency spend data rather than Meta's reported earnings, the picture differs somewhat but not dramatically: spend held at an average 17% growth through scandal periods from 2009 to the present.
What Wright did flag, however, is a more recent slowdown in Guideline's numbers - one that diverges from Meta's own reported ad revenue figures. His hypothesis is revealing. He suggests the divergence is not primarily driven by brand ethics concerns. Rather, it may reflect Meta's own AI tools creating friction for sophisticated buyers. "What I actually think is also at play," Wright said, "is a lot of these AI tools are driving up costs, not necessarily giving the return on ad spend that a lot of these big brands expected to see from Meta."
The split between large brands and SMBs appears significant here. Small and medium-sized businesses, according to anecdotal feedback Guideline has gathered, tend to embrace Meta's AI tools because a single person managing a business can point, click, enter a prompt, and run a campaign. Larger operations with teams of twenty people optimizing campaigns find the tools add complexity without proportional return. They describe it as a black box. Wright put it directly: sophisticated brand advertisers are accustomed to granular control and in-flight optimization, and Meta's AI stack is, in his read, delivering less "juice for the squeeze."
The structural problems with Meta's AI advertising tools have been examined at length in the context of demographic targeting failures and automated spend without verifiable outcomes. Meanwhile, Meta has also faced scrutiny over scam advertising revenue, with internal documents suggesting the platform projected approximately $16 billion in 2024 revenue from ads promoting scams and banned goods.
Despite all of it - the California lawsuit, the measurement controversies, the scam ad exposure, and the service model that in markets like New Zealand amounts to two employees covering an entire country - Meta continues to outperform the overall market in agency spend growth. Wright said Meta's spend growth runs four to eight percentage points above overall market growth in Australia, the UK, and the US. Even Australia, which registers as negative in absolute terms, came in above market because the whole Australian market was down.
The concentration problem is stark when expressed as a ratio. Wright described an environment where roughly two of every three pounds of UK ad spend go to three platforms. "It's not a good situation to be in," he said, noting that Canada and other markets are actively studying the economic impact of having so much money leave local publisher ecosystems entirely.
One of the sharpest data points in the conversation concerns the television market, where a structural mismatch between where audiences remain and where money has moved is creating lasting damage.
According to Wright, linear television in the US still delivers approximately 89% of all available ad impressions. Yet somewhere between 35% and 38% of TV ad budgets have shifted to streaming. The migration of dollars has far outpaced the migration of eyeballs. Wright's data from the US shows that roughly 25 cents of every dollar that leaves linear ends up back in streaming. In the UK, it is closer to 15 pence per pound. In Canada, approximately 20 Canadian cents per Canadian dollar.
The gap is partly explained by pricing. Linear CPMs in some markets - particularly cable and paid TV channels in the UK - have collapsed to the equivalent of $4 to $5 in US dollar terms. Streaming CPMs in those same markets run at $22 to $25. For an advertiser trying to move a linear dollar into a streaming environment from the same broadcaster, the mathematics simply do not work. "They're almost cutting their nose to spite their face," as Wright framed the strategy TV companies are pursuing - pricing up streaming while watching the displaced dollar go to YouTube at $4.80 to $5 rather than to their own services.
Wright also raised a more structural point about programmatic and streaming. Going back a couple of years, streaming inventory was approximately 82% direct-sold globally, with programmatic making up the remainder. By the end of 2026, Wright estimates the split will be closer to 40% direct and 60% programmatic globally. In the US, the split is already near 50-50. PPC Land has documented this shift across multiple fronts, including the role of free ad-supported streaming television and the structural impact of biddable inventory on premium pricing.
The transition to programmatic comes with a cost that TV companies are still absorbing. Wright noted that direct sales that used to generate a dollar of revenue now generate 75 to 82 cents when transacted through a DSP. More troubling is the pricing transparency DSPs create: a buyer inside a DSP can see what every piece of inventory costs. When a buyer is under ROAS pressure and can reach an equivalent impression count at $4.80 rather than $18.25, the lower price wins - regardless of what it means for content quality or publisher sustainability.
OTT video CPMs have fallen roughly 40% in the last eighteen months, according to Guideline's data. Wright attributed this to two compounding forces: a major influx of formerly subscription-only services entering the ad-supported tier and thereby flooding supply, and Amazon entering the market aggressively at below-market pricing. "Amazon aggressively came into the market, kind of at a lower price premium than some of the other players, so they kind of were able to drive the market down," Wright said. PPC Land tracked Amazon's Q4 2025 advertising revenue reaching $21.3 billion, a 23% year-over-year increase, in part driven by Prime Video inventory now available to advertisers across 16 countries.
Wright and Lebbon spent time on a paradox that runs through the entire traditional media sector. Publishers under pressure from investors to hit profitability targets comparable to Meta and Google are cutting costs. But those cuts - in customer service, content investment, and technical infrastructure - are precisely what allows the platforms to maintain their advantage.
In markets like New Zealand, Meta operates with two employees. Local publishers trying to compete for brand investment cannot offer that level of national coverage with a team that size, but they can offer something Meta cannot: direct human relationships, market-specific expertise, and editorial environments with accountability. Whether brands value that enough to pay a premium is another question. Wright's data suggests they often do not.
The structural argument Lebbon made is that traditional TV and media companies need to become more like the platforms they are losing money to - simpler to buy, self-service capable, equipped with feedback loops and measurement systems that close the attribution loop. The irony is that the cost-cutting eliminating editorial and technical staff is also eliminating the people who could build those systems.
Globally, Wright's data shows a market where the DSP ecosystem is consolidating into four players, the platform economy is absorbing ad dollars that used to fund diverse media, and the programmatic shift is compressing publisher margins on both the streaming and linear sides simultaneously. The question of whether any of this changes soon is, according to the data, largely unanswered.
Who: Sean Wright, chief insights and analytics officer at Guideline; Justin Lebbon, host of Media Unfiltered Podcast; Ian Whittaker, media economics analyst. Guideline tracks holdco and independent agency ad spend across markets including the US, UK, Canada, Australia, and New Zealand.
What: Guideline data shows the top four DSPs - Google DV360, The Trade Desk, Yahoo, and Amazon - now hold approximately 85% of global programmatic market share, up from about 75% in 2022. Amazon nearly doubled its share in fifteen months. The Trade Desk is growing at the market rate but stagnating in the US. Smaller DSPs have lost 45% of their prior share to the top four. Separately, Meta has sustained average revenue growth of 21% in quarters following major scandals, while OTT video CPMs have fallen roughly 40% in eighteen months. Linear TV in the US still accounts for approximately 89% of ad impressions, yet 35-38% of TV budgets have moved to streaming.
When: The data and analysis were discussed publicly on May 6, 2026, in the Media Unfiltered Podcast and a related LinkedIn post by Whittaker. The DSP market share figures cover CY-2022 through Q1 2026.
Where: The Guideline dataset covers the US, UK, Canada, Australia, and New Zealand, tracking holdco agencies and large independents. The discussion took place on a publicly available podcast and LinkedIn.
Why: The data matters for the marketing community because it documents a structural consolidation that affects pricing, publisher revenue, and the economics of independent media. As programmatic spend concentrates in fewer platforms, DSP selection becomes a strategic decision with direct implications for margin, transparency, and leverage. The divergence between Meta's reported revenue growth and what Guideline sees in agency spend raises questions about AI-driven cost increases and measurement reliability. The collapse in streaming CPMs signals that programmatic access to video inventory has introduced pricing pressure that may permanently impair premium publisher economics.
