Magnite has been named the primary video ad server for HP TV+, the free ad-supported streaming service HP builds for its personal computers, and will connect the service's banner and video inventory to programmatic demand alongside audience data drawn from how HP machines are used. The New York company disclosed the arrangement on September 23, 2026.

In Short

HP, the computer maker, runs a free TV-style streaming service on its own laptops and desktops, and it has picked Magnite to run the video ads that play inside it. If you plan or buy advertising, you can now reach people watching that service through automated buying tools, using audience groups HP builds from how its PCs are used, which Magnite describes as consent-based. What changes is access rather than scale, since the countries covered, the prices and the size of the audience have not been published.

A streaming service built for the PC screen

HP TV+ is, according to Magnite, HP's native free ad-supported streaming television environment - FAST, in trade shorthand - designed specifically for personal computers. It belongs to HP Media Network, the advertising business the PC maker began pitching to agencies in July 2025. Programming spans movies, live sports, lifestyle, news and what Magnite calls specialised content. The company frames the service as a personal, one-to-one experience in which the screen used for watching is the same one used to research, shop and act.

That framing carries the commercial argument. A television in a living room is a lean-back device, watched from across the room and rarely used to complete a purchase. A laptop is where people search, compare prices and pay. What HP and Magnite are selling is the idea that an advertisement seen between programmes can be followed up without reaching for a second device.

HP's own advertising page for HP TV+ lists four placements: interstitial video that takes over the full screen between programmes, a homepage hero unit, a homepage banner and a banner inside the live programme guide. Three of the four are display formats, which is why Magnite's release covers banner inventory as well as video.

How many people watch? Neither company said. The only scale figures on record describe HP's device base rather than the streaming service. When HP Media Network first went to market, HP claimed 160 million monthly US users across 19 million devices, with global reach of 830 million monthly users on more than 100 million devices and 2 million new devices added each month. That pitch already bundled a streaming service with on-device campaigns.

Three layers of Magnite technology

According to Magnite, HP TV+ has adopted its full technology stack: SpringServe for ad serving, programmatic activation, and the ClearLine toolset for packaging audiences. Each layer does a different job, and the release gives them different weight.

SpringServe picks the ad

As primary video ad server, SpringServe sits at the point where each break is filled. An ad server holds a publisher's directly sold campaigns, weighs them against programmatic bids, selects the creative and counts the impression. Magnite acquired SpringServe in 2021, in a transaction separate from its purchase of SpotX. It merged the ad server with its sell-side trading technology on April 23, 2025, citing Jounce Media's March 2025 Supply Path Benchmarking Report for its claim that the combined platform connected buyers to 99% of US streaming supply. Disney Advertising, LG Ad Solutions, Paramount, Roku, Samsung and Warner Bros. Discovery were the first clients, and the unified platform reached general availability in July 2025.

The word "primary" matters. It leaves room for other video ad sources, and the release says nothing about which system serves the three banner placements.

Programmatic access, without exclusivity

Magnite is also described as "a programmatic technology provider" for HP TV+. In that role it works as a supply-side platform, offering HP TV+ impressions to demand-side platforms through auctions and negotiated deals. The indefinite article is worth noting. Magnite is not presented as the sole programmatic route, yet no other provider is named. Nor does the release list the demand-side platforms through which buyers will reach the inventory.

Packaging audiences through ClearLine

The third layer is curation: assembling inventory and data into a package before a bid request reaches a buyer, typically delivered as a single deal ID that a buying platform can bid on. Magnite's product for this is ClearLine. On October 1, 2025, the company rebuilt ClearLine to combine curation and activation on the same infrastructure as SpringServe, arguing that curated campaigns would then execute closer to the impression with less signal loss.

ClearLine has been accumulating data sources since. On September 9, 2026, Magnite opened its self-serve ClearLine Activate tool to 27 named data, clean room and publisher partners, removing the need for buyers to request new deal IDs for approved audiences. The publisher partners named that day were LG Ad Solutions, Paramount, A+E Global Media, Scripps, AMC Networks and Wonder/Tastemade. HP Media Network was not among them. Fourteen days later it had an arrangement of its own.

1,200 apps and 300 attributes

The data is the most concrete part of the release. Through ClearLine Curation, according to Magnite, HP Media Network can make its consent-based audience intelligence available for programmatic activation. Buyers can choose from nearly 100 off-the-shelf segments or define custom segments built from insights across 1,200 PC apps and more than 300 consent-based usage attributes.

That is a different signal from the ones television buyers usually work with. Smart TV manufacturers have built advertising businesses around what their screens display; a PC maker can see which software its machines run. Application-level data gathered on the device could in principle identify, say, regular users of video editing or accounting software without relying on browser cookies.

The release leaves the mechanics open. It does not define a usage attribute, or say how consent is obtained, whether it is opt-in, or which privacy regimes govern the collection. Whether the 1,200 apps are HP's own software, third-party programs or both is also unstated.

A second question concerns where the segments can run. The release ties them to programmatic activation in general, not explicitly to HP TV+ inventory. HP's website lists HP Audience Extension as a separate product within HP Media Network, which suggests off-device use of the data is sold under another name, but Magnite's release does not connect the two.

Other data owners have taken the portable route through Magnite. Best Buy named Magnite its exclusive supply-side and curation partner on September 19, 2025, covering onsite and offsite channels. Expedia Group extended 200 petabytes of traveller data into programmatic channels through Magnite's publisher relationships in April 2026. Roku took a narrower path on April 27, 2026, when Roku Curate bundled purchase signals from six retail partners with its own streaming inventory, powered in part by SpringServe. HP's arrangement could sit on either side of that line. The release does not say which.

Half of FAST viewers, or half of viewing?

Magnite's case for the deal leans on one number. "PC-native streaming introduces a powerful dynamic where viewing, research, and action occur simultaneously on the exact same device," said Chris Signore, senior vice president of business development at Magnite. "Streaming on a personal PC offers a highly connected environment where entertainment and everyday decision-making intersect. With 50% of FAST viewers consuming content on their PCs, we are excited to help HP build a more direct pathway for advertisers to engage active users across every stage of their digital journey."

The release gives no source for the 50% figure. HP's advertising page for HP TV+ attributes the same number to a June 2025 Hub Entertainment Research study titled Streaming, Rebooted: The Role for PCs in Free Streaming TV, and cites a second finding from it: 34% of viewers are likely to engage with FAST advertising. Neither page describes the sample, the country or the survey method.

The wording deserves care. Half of viewers consuming some content on a PC is not the same as half of FAST viewing taking place on PCs. Someone who watches one channel on a laptop once a month counts towards the first statistic; the second would require time-spent data, which neither company has published. For buyers pricing inventory by hours of attention, that gap is material.

The category is growing and cheapening at the same time. A Video Advertising Bureau analysis from October 2025 found a 57% increase in FAST channels between 2023 and 2025, 19% more viewers between 2022 and 2025 and 54% more time spent. Prices have gone the other way. Figures compiled earlier this month put FAST revenue per viewing hour at 0.08 dollars against 0.18 dollars previously, with CPMs that once sat near 30 dollars now trading in single digits, alongside an argument from a supply-side executive that the channels are discounted because their operators withhold audience data.

HP TV+ enters with the opposite posture, offering audience data up front. That data describes how devices are used, though, not whether a given advertisement rendered or was watched - and verification was the gap the discount argument centred on.

What the release does not say

Is programmatic access live, or still pending? The release gives no start date. No markets are named either; HP's advertising page for the service sits on its US website, and the scale figures HP has cited were led by the United States. Financial terms, contract length, floor prices, ad load and audience size are all absent, and measurement or verification partners go unmentioned. The consent framework behind more than 300 attributes is conveyed in a single adjective.

HP is assembling its ad stack one format at a time

The Magnite arrangement follows by ten weeks a comparable assignment for a different HP surface. On July 16, 2026, Kargo became the designated programmatic supply-side platform for HP Spotlight, the dismissible notification format built into HP consumer PCs, which until then had been sold only through direct insertion orders. Kargo took on creative development and ad operations for both buying routes, and the format became available internationally. Microsoft had earlier served as a supply-side partner for the network more broadly, according to HP's privacy documentation. The same report recorded the engagement figures HP has published for another on-device unit: more than five million views and a 2.6% click-through rate for its Toast notification during a past holiday campaign. Nothing comparable has been disclosed for HP TV+.

The result is a stack divided by surface, with Kargo on the desktop notification and Magnite on streaming video. HP's website lists four products under the HP Media Network banner: HP Spotlight, HP Audience Extension, HP TV+ and HP Omni+.

Chris Ryu, general manager of HP Media Network, was quoted in both the Kargo and the Magnite statements. "Scaling HP Media Network and HP TV+ requires technology that can support the complexity of video advertising while giving advertisers more flexible ways to access our banner and video inventory," Ryu said. "Magnite brings together the ad serving and programmatic capabilities we need to support that growth, giving HP TV+ a more integrated foundation as we expand our streaming advertising business."

Television manufacturers have split their surfaces in similar ways. Samsung adopted SpringServe as the ad serving technology for its Smart TV home screens in June 2026, with programmatic access through The Trade Desk and Display & Video 360 due to roll out from the third quarter. Its own streaming service, Samsung TV Plus, relies on a different vendor.

Where SpringServe already runs

The video ad server market is contested in a way web display is not. A comparison circulated in November 2025 set seven platforms side by side: Google Ad Manager, FreeWheel's Streaming Hub, Publica by IAS, SpringServe, Adtelligent, Aniview and Project Limelight. The same record noted that Samsung Ads and Publica renewed their exclusive global partnership for Samsung TV Plus on September 30, 2025, covering 88 million monthly active users. HP has put its streaming service on SpringServe instead.

SpringServe's client list has been lengthening at the streaming end. Business Insider chose it on July 21, 2026 to run ad serving and programmatic sales for a standalone FAST channel, handling direct and programmatic demand in one layer.

Open-web display is a different market. There, the Virginia court found in April 2025 that Google held 91% of the publisher ad server market, and on September 2, 2026 Judge Leonie Brinkema declined to order the sale of AdX or DFP, adopting behavioural remedies instead. Magnite, which filed its own damages suit against Google on September 16, 2025, competes for display impressions inside that ad server. HP TV+ banners are display units inside an application, and which system serves them is among the details the release leaves out.

CTV, desktop or neither?

Magnite (NASDAQ: MGNI), which describes itself as the largest independent sell-side advertising company, reports contribution ex-TAC by channel. In the second quarter of 2026, connected television produced $97.1 million, or 51% of the total, up 36% year on year. Mobile produced $65.8 million, or 35%. Desktop produced $26.7 million, or 14%, essentially unchanged from a year earlier. Guidance for the third quarter puts connected television between $98 million and $100 million. On its first-quarter call in May, the company counted 21 commerce media partners, 13 of them deployed.

HP TV+ is television-style streaming delivered to a desktop or laptop. The release does not say which reporting line its revenue will fall into, and the answer is not obvious. SpringServe's recent clients are dominated by television screens and streaming channels; a PC-based service could as easily be booked as desktop, the company's flattest line in the quarter. HP pitched its media network in 2025 as an entrant in retail media, so it could also be treated as a commerce media partner. For anyone reading Magnite's streaming growth line by line, this deal may not show up where the headline suggests.

Why this matters for the marketing community

For buyers, the arrangement adds streaming video that arrives with device-derived audience data and a programmatic route to it. That is uncommon in FAST, where missing audience information has been blamed for falling prices. Will the data command a premium on inventory that has been repricing downward? That depends on details not yet published, above all whether any third party can verify what ran.

For hardware makers, HP's approach confirms a pattern. Devices are now sold as media, and each surface on a device can end up with its own technology partner. A buyer who wants HP's notification inventory and its streaming inventory would deal with two different supply-side platforms, and possibly a third if Microsoft's earlier role persists. Supply path decisions become more complicated as manufacturers divide their screens.

For Magnite, HP extends a curation model previously built around a retailer, a travel group and a streaming platform into device usage data. It also adds another streaming client to SpringServe at a time when the company's growth depends heavily on that product. How the revenue is classified will matter to anyone modelling the business.

For publishers watching the data market, the more consequential number may be 1,200 rather than 50%. Application-level usage data, gathered on the device and offered to buyers as packaged audiences, is a signal that browsers cannot see and cookies cannot supply. The consent terms under which it travels deserve closer scrutiny than the release allowed.

Timeline

Summary

Who: Magnite, the New York-based sell-side advertising company, and HP Media Network, the advertising business of HP, with statements from Chris Signore, senior vice president of business development at Magnite, and Chris Ryu, general manager of HP Media Network.

What: Magnite has been named the primary video ad server and a programmatic technology provider for HP TV+, HP's free ad-supported streaming service for personal computers. HP TV+ adopts SpringServe ad serving, Magnite's programmatic activation and ClearLine Curation, through which buyers can activate nearly 100 off-the-shelf segments or build custom segments from insights across 1,200 PC apps and more than 300 consent-based usage attributes.

When: The arrangement was disclosed on September 23, 2026. No start date, contract term or rollout schedule was given.

Where: The release names no markets. HP's advertising page for HP TV+ sits on its US website, and the scale figures HP has cited for its media network were led by 160 million monthly US users.

Why: HP is building an advertising business on its installed base of PCs and is assigning technology partners format by format, with Kargo on HP Spotlight and Magnite on HP TV+. For advertisers, the deal adds programmatic access to PC-based streaming inventory with device-derived audience data, at a time when FAST prices have fallen and buyers have complained about missing audience information. Key details on consent, markets, pricing and measurement remain undisclosed.