Two acquisitions announced within hours of each other this week say more about where ad tech is placing its bets than either deal does on its own. Taboola is buying a finance focused ad network. Infillion is buying a location intelligence company. Neither buyer is chasing scale for its own sake. Both are buying their way into a specific vertical, whole.
The pattern: buy the vertical, not the volume
Taboola announced on September 18 that it will acquire Dianomi, a UK based ad network that connects financial advertisers with premium business and finance publishers including Reuters, CNN Business, the Times, the Wall Street Journal, NBC News and Yahoo. Dianomi’s advertiser roster includes Charles Schwab, Invesco and Bank of America. The deal, expected to close before the end of 2026 pending regulatory approval and a shareholder vote, was not disclosed with a purchase price.
“Dianomi has demonstrated a commitment to connecting the largest financial brands in the world with their target audience to drive performance driven advertising,” said Adam Singolda, CEO of Taboola, in the companies’ announcement.
What Taboola is buying is not more inventory. It already has that. It is buying Dianomi’s specific standing with a category of advertiser, financial services, that runs under heavier compliance and brand safety requirements than most of the open web. A general purpose content recommendation network cannot simply promise a bank or an asset manager the same publisher context that a finance specific network has spent years building.
A second data point: location joins the stack
The same week, Infillion announced it would acquire Foursquare, the location data and intelligence company, continuing a run of acquisitions that has already brought MediaMath and Catalina under Infillion’s roof. Financial terms were not disclosed. The logic tracks the Taboola deal closely: rather than build location intelligence in house or license it deal by deal, Infillion is buying the vertical outright, folding a specialist’s real world visit data directly into its outcomes measurement stack so it can tie ad exposure to store visits and purchases without relying on a third party integration.
Two deals in the same week, in different corners of ad tech, following the same logic, is a pattern rather than a coincidence.
Why vertical specialization beats horizontal scale right now
For most of the last decade, ad tech consolidation ran the other direction: platforms merged to add reach, inventory and geography, and the pitch to advertisers was breadth. That logic is weakening for three reasons that show up in both deals.
First, regulated and reputation sensitive categories, finance chief among them, do not reward generic reach. A bank buying media wants publisher context it can defend to a compliance officer, not the largest possible footprint. Dianomi’s specific relationships with finance publishers are the asset, not a plug-in feature.
Second, outcomes measurement is only as credible as the data behind it. Infillion’s pitch to marketers already leans on connecting spend to real world behavior, and that pitch is only as strong as the location data underneath it. Owning Foursquare removes a dependency rather than adding a product line.
Third, both buyers are effectively insourcing trust. A finance vertical network and a location data provider both carry credibility that took years to build with a specific audience of publishers or venues. That credibility does not transfer cleanly through a licensing deal. Owning it outright does.
The counter case: concentration risk does not disappear, it moves
The obvious objection is that buying the vertical outright does not remove the concentration problem in ad tech, it just relocates it. If Taboola owns the leading finance content network and Infillion owns a leading source of location data, advertisers in those categories now depend on fewer, larger, more entrenched suppliers than before, not more competitive ones. A finance marketer who wants Dianomi’s publisher relationships now also inherits Taboola’s pricing and its broader recommendation business, whether or not that bundle was what the marketer wanted. That trade off is real, and it is the reason regulators are already scrutinizing ad tech’s supply side closely enough that Taboola flagged shareholder and regulatory approval as conditions of the deal rather than formalities.
The counter to the counter is that vertical ownership, unlike the horizontal scale mergers of the last decade, at least concentrates around a defensible specialty rather than raw reach. A marketer buying finance media through Dianomi is not paying for Taboola’s entire open web footprint, only for the piece that is relevant to a regulated category. Whether that distinction holds up under scrutiny is precisely what the shareholder vote and regulatory review over the next several months will test.
What it means for the marketing leader
The practical shift for buyers of ad tech is in how to evaluate a vendor’s claims. A platform that promises broad reach across “premium finance publishers” or “real world attribution” should be asked which specific relationships or data sets back that claim, and whether the vendor owns them outright or resells someone else’s. Vertical ownership, as both deals show this week, is increasingly the differentiator marketers should be pricing in, not treating as a footnote in a sales deck.
For marketers running regulated category campaigns specifically, finance, healthcare, insurance, this also means the list of credible partners is likely to keep shrinking through consolidation rather than growing through new entrants. That argues for locking in current vendor relationships and understanding their ownership structure now, rather than assuming today’s options will still exist unchanged in a year.
The wider context matters too. Ad tech’s structure is already under pressure from the unsealed remedies in the Google ad tech antitrust case, which is forcing interoperability across the parts of the stack that used to be walled off. Against that backdrop, buying a vertical outright, as Taboola and Infillion just did, is also a way to build a defensible position before the rules of the rest of the market get rewritten around them.
Watch for more of this in categories with similarly high compliance stakes and thin publisher supply, retail media adjacent to regulated goods and travel are the next likely candidates. The deals worth tracking will not be the biggest ones. They will be the narrowest.
Source: Taboola, Inc.
