US programmatic CPMs closed June 2026 at 51.0% above the same month a year earlier, the strongest annual reading in DataBeat's 2026 series, yet the same dataset records a 12.3% annual decline in connected television pricing and a publisher engagement rate that fell from 51.0% to 37.0%.

The July 2026 edition of the DataBeat US Programmatic Trends Report was distributed today through the MediaMint DataBeat newsletter. It benchmarks June 2026 marketplace results against both May 2026 and June 2025, drawing on anonymized data from partners across the DataBeat network covering more than $55 million in monthly revenue, more than 35 billion monthly impressions and signals from over 200 tracked bidders, according to the report.

The headline is a price story. Overall CPMs rose 16.9% month over month and 51.0% year over year. Display CPMs climbed 14.7% and 26.9% on the same two measures. Video CPMs led the monthly table at 17.6% and the annual table at 41.3%. Programmatic fill rate moved 4.2% month over month but only 1.6% year over year, a gap that matters: the price of a matched impression rose sharply while the proportion of impressions finding a buyer barely changed against 2025.

The annual figure has climbed all year

Placed against earlier editions of the same series, the 51.0% reading is the top of a rising line rather than a single spike. The February 2026 edition, covering January data, recorded a 32.5% month-over-month CPM collapse against 23.6% annual growth after the holiday peak. The May edition, covering April, showed overall CPMs up 33.9% year over year with connected television down 25.8%. June's edition made autonomous buying its featured theme and found conventional buyers still holding a 13.4% CPM premium over agentic ones.

Across those four data points the annual comparison has moved from 23.6% to 33.9% to 51.0%. Part of that arithmetic reflects a weak 2025 base. Part reflects a June that carried two concentrated demand events at once.

App inventory repriced, AMP did not

The report's featured theme this month is a quarterly comparison of CPM by inventory type, covering April through June in both 2025 and 2026. The three environments moved in three different directions.

App CPMs increased 50.4%, from $1.13 to $1.70, with gains building in every month of the quarter. According to DataBeat, the sustained increase likely reflects stronger seasonal advertiser demand driven by major events including the FIFA World Cup and the June Prime Day shopping period, which intensified competition for in-app inventory. Both events fall inside the measurement window. The tournament ran from June 11 to July 19 across 16 host cities, with research before kickoff estimating that 63.9 million American adults planned to watch. Amazon moved Prime Day into June for the first time since 2021, and the four-day US event ran June 23 to June 26, closing with total ordered revenue 1.7% below 2025 and brand ad spend down 8.8%.

That last figure sits awkwardly beside a 50.4% app CPM gain, and the tension is worth naming. Retail advertisers spent less in aggregate on Amazon's own surfaces during the event while in-app open-market pricing rose by half. The report does not reconcile the two, and its attribution to Prime Day is framed as a likely explanation rather than a measured one.

Web CPMs rose 2.2%, from $1.39 to $1.42, improving steadily from roughly flat in April to firmer gains by June. DataBeat reads the pattern as demand stabilising rather than reacting to any single event, and connects it to advertisers directing spend toward curated, brand-safe supply paths instead of treating the open exchange as commodity inventory.

AMP CPMs declined 17.2%, from $1.22 to $1.01, with the largest drop in April. The report ties the fall to the industry's move away from the format following the removal of its search advantage, describing future strategy as a question of managed phase out rather than performance recovery. Google's own documentation moved in the same direction during the measurement period's immediate aftermath: on July 1, 2026, the company simplified its AMP documentation and began routing Search users directly to publisher-hosted AMP pages rather than through a Google-hosted cached copy.

The report also cites a supply-side mechanic behind the app number: publishers migrating from waterfall to unified auctions report revenue increases of 15% to 30%, driven by real-time competitive bidding rather than static, historically set floor prices.

Mobile and desktop pricing has almost converged

Device-level figures show the same broad lift with one persistent exception. Mobile CPMs rose 19.4% month over month to $1.72 and 53.5% year over year. Desktop gained 6.4% to $1.77 and 43.6% annually. Tablet posted 8.5% monthly and 31.5% annual growth to $1.37.

Five cents now separate the average mobile impression from the average desktop impression. DataBeat treats that near-parity as a continuing structural shift, attributing it to advertisers' growing confidence in mobile inventory quality as publishers strengthen first-party data and contextual signals.

CTV remains the outlier. The format recovered 20.7% month over month to $5.74, the clearest monthly stabilisation signal it has produced in several months, but its year-over-year position is still negative at 12.3%. That deficit has narrowed from the 25.8% annual decline recorded in the April data, though it has not closed. Within the CTV supply table, Ad Exchange holds 74% share of voice at $3.80 with a 7.5% monthly decline, while Index Exchange sits at 15% share and $4.25, down 4.7% for the month but up 69.3% against 2025.

Structural pricing pressure beneath a seasonal bounce is a recurring theme in CTV reporting. A July 2026 survey found only 33% of marketers fully trust platform-reported performance claims even as half increased budgets, and DoubleVerify recorded a 140% rise in CTV fraud schemes in the first quarter.

Header bidding takes share back from Google's exchange

The integration mix reversed direction. Prebid extended its share to 54%, AdX held at 34%, TAM contracted to 8% and EBDA accounted for 4%. In the April data, Prebid had fallen to 48% from 56% while Ad Exchange expanded from 27% to 35%, a rotation DataBeat then described as demand consolidating toward Google's exchange. Two months later the flow has run the other way. The report attributes the reversal to improving floor price discipline and stronger auction competition across Prebid-integrated supply paths.

Pricing across integrations was positive on an annual basis with a single exception. Prebid CPMs reached $1.82, up 19.9% monthly and 38.0% annually. TAM reached $2.34, up 19.0% and 35.5%. EBDA reached $1.83, up 14.3% and 37.5%. Ad Exchange reached $1.46, up 6.0% for the month but down 0.5% year over year. According to DataBeat, that near-flat annual line suggests the exchange's pricing ceiling is being tested as competing integrations absorb incremental demand share, even as it remains the dominant volume channel.

Supply is still arriving through middlemen

The accompanying Sellers Report for July 2026 records a net addition of 64,800 ads.txt lines across the market. Resellers drove 56.9% of those additions, meaning most new publisher relationships continue to form through intermediaries rather than direct integrations. Tier 1 supply-side platforms remain at a 46% duplicated-domain rate, and their direct-only share sits at 19.91%, described as essentially flat against the previous month rather than falling further.

The reseller share has been declining slowly across the series. April activity showed 63% of net gains coming through resellers, the June report recorded 57.4% alongside the same 46% duplication rate, and July now reads 56.9%. Duplication is the mechanical consequence: when the same publisher domain is reachable through more than one path, the same impression can enter the bidstream twice and compete against itself.

Among individual sellers, the report's Established tier is led by Ozone at 398 net line additions, RISE at 217 and Seedtag at 169. The Scaling tier is led by Wunderkind at 255, Geniee at 245 and pgammedia at 244. Opera recorded no net change.

Microsoft pays $15.18, The Trade Desk pulls back

Buyer-side tables show demand spread wider than the headline CPM suggests. AdWords small businesses retained the top advertiser position at a $3.48 CPM, up 38% month over month. Amazon Corp ranked second at $3.93 with a 122% monthly gain, which the report reads as a retail media reactivation cycle driven by Prime Day-adjacent spend. Best Buy's 100% gain to $3.44 fits the same pattern. Microsoft Corp ranked third with a $15.18 CPM, up 34% and far above every other tracked advertiser. TEMU pulled back 21% to $3.73. Alphabet, ranked seventh, declined 5%.

Among bidders, Google Ads led at $3.05 with a 15% monthly gain and DV360 followed at $2.93, up 11%. Index Exchange surged 127% to $3.23 and Magnite jumped 134% to $3.30. The Trade Desk declined 24% to $3.98, a movement the report describes as potentially reflecting strategic bid adjustments rather than reduced overall investment. Yahoo gained 53% and Criteo was effectively unchanged at 1%.

Audiences grew while attention thinned

The traffic section of the report describes a publisher base acquiring more people and holding fewer of them. New users grew 14% in June. Pageviews per user fell 2%, from 2.59 to 2.53, and sessions per user fell 2%, from 1.85 to 1.82. The engagement panel records a move from 51.0% to 37.0%, a 28% decline, while the narrative text separately describes engaged sessions per user falling 29%. The two figures are presented against different denominators and the report does not reconcile them.

Channel-level detail sharpens the picture. Organic search remained the largest source at 30.14% of traffic, down 1.20 percentage points, with sessions off 2.19% and the steepest decline in both volume and engagement. Direct held 28.93% share with sessions down 4.07% but the strongest engagement rate of any channel at 71.70%. Paid social recorded the fastest session growth at 47.38% while delivering the weakest engagement rate at 29.44% and the smallest audience quality contribution. Email remained small at 1.77% of traffic but produced the highest content consumption per user at 3.91 pageviews.

Discovery sources moved sharply. X referral traffic grew 170% month over month, the fastest-growing source tracked. Instagram grew 107%, Reddit 47% and Facebook 35%, while Google News fell 10% and MSN fell 25%. AI assistant traffic grew 24.8% overall, led by ChatGPT at 24.3%, with Gemini up 77% and Claude up 73% from smaller bases. Those growth rates arrive against a base that remains small: Chartbeat data published in March 2026 showed ChatGPT referrals still under 1% of total publisher page views while small publishers lost 60% of search traffic over two years. Similarweb measurement in June put ChatGPT at 52.7% of generative AI web traffic, down from 76.4% a year earlier.

Vendor studies packaged with the data

The newsletter distributing the report also carried two MediaMint studies. One examines the ecosystem forming around ChatGPT advertising, naming Adobe, Criteo and Smartly as confirmed partners and Target and HelloFresh among brands in the pilot, and citing $100 million in annualized revenue reached in six weeks. That milestone was disclosed by OpenAI on March 26, 2026, six weeks after the pilot launched. Criteo became the first formal ad tech partner on March 2 and has since reported more than 2,000 brands running ChatGPT campaigns, while StackAdapt joined the technology partner group in May.

The second study tests Secure Signals on privacy-restricted AdX inventory and reports an 11-fold RPM lift, six-fold higher fill rates and a 52% CPM increase on signal-enabled traffic, which the company translates into roughly $900,000 a month on a base of 100,000 daily impressions. Those are vendor figures from a commercial party with a product in the category, and they have not been independently verified. DataBeat's February report had already found secure signal uplift varying widely by identity solution, from 94% for Unified ID 2.0 down to far lower readings in non-Chrome environments.

On the same page, Ashok Ganapam, President of AdTech and Monetization, argued in a piece for Adtech Today that identity erosion has changed the status of publisher data infrastructure. "Data engineering stopped being a technical conversation and became an existential monetization conversation," he wrote.

Why this matters for marketers

For buyers, a 51.0% annual CPM increase against a 1.6% annual fill rate change describes a market where the same volume of matched inventory costs materially more. Budgets set against 2025 benchmarks will buy less. The divergence by format matters more than the average: app inventory repriced by half, web moved 2.2%, and AMP fell 17.2%, which means a media plan's realised cost depends heavily on environment mix rather than on the headline index.

For publishers, the combination of rising prices and thinning engagement is the operative tension. A 14% increase in new users alongside a 2% decline in both pageviews and sessions per user indicates traffic arriving in shallower journeys. Paid social, the fastest-growing channel at 47.38% session growth, delivers the weakest engagement of any source measured. Meanwhile 56.9% of new supply relationships still form through resellers, and the 46% duplication rate at established platforms means a share of the auction pressure driving those CPMs is inventory bidding against itself. Publishers have already begun testing where that pressure comes from: several major US groups have openly weighed cutting Google's crawler off as ad supply fell 40%, and PubMatic began billing publishers for excess inventory in April.

The report is a vendor publication drawing on its own partner network rather than a census of the US market, and its attributions to World Cup and Prime Day demand are stated as probable rather than tested. What it measures with reasonable precision is direction: prices up across nearly every format, supply still routed through intermediaries, and audience quality moving the other way.

Timeline

Summary

Who: DataBeat, a programmatic market intelligence unit operating under MediaMint, publishing through the MediaMint DataBeat newsletter. The dataset covers supply-side and demand-side activity across more than 200 tracked bidders, including Google Ads, DV360, The Trade Desk, Index Exchange, Magnite, Amazon and named brand advertisers such as Microsoft, Best Buy and TEMU.

What: The July 2026 US Programmatic Trends Report records overall CPMs up 16.9% month over month and 51.0% year over year, with display at 14.7% and 26.9% and video at 17.6% and 41.3%. Programmatic fill rate rose 4.2% monthly but only 1.6% annually. A quarterly inventory comparison shows app CPMs up 50.4% to $1.70, web up 2.2% to $1.42 and AMP down 17.2% to $1.01. CTV recovered 20.7% monthly to $5.74 while remaining 12.3% below June 2025. Prebid extended integration share to 54% against AdX at 34% and TAM at 8%. The companion Sellers Report records 64,800 net ads.txt line additions, 56.9% of them driven by resellers, with a 46% duplicated-domain rate at Tier 1 platforms.

When: The report was distributed on August 4, 2026, covering June 2026 results benchmarked against May 2026 and June 2025. The quarterly inventory theme covers April through June in both 2025 and 2026.

Where: The United States programmatic advertising market, measured across the DataBeat partner network covering more than $55 million in monthly revenue and more than 35 billion monthly impressions.

Why: Pricing rose across nearly every format while fill rate stayed close to flat and publisher engagement fell, indicating that the cost of matched inventory increased faster than the volume of matched demand. The divergence between app, web and AMP pricing means realised campaign cost now depends more on environment mix than on any market-wide index, while continued reseller-driven supply growth and unchanged auction duplication mean part of the price pressure originates in redundant supply paths rather than incremental buyer demand.