Vista Equity Partners has put more than $1.16 billion on the table to acquire Criteo, the Paris-based company whose technology is largely responsible for the ads that seem to follow you from website to website after you browse a pair of sneakers or check a hotel price. The offer, submitted last week alongside investment firm Quinti Capital, values Criteo at more than a 50% premium to its recent share price. Criteo has not yet decided how to respond.

Criteo's U.S.-listed shares jumped 21.4% on Monday to close at $23.17, capturing roughly half of that premium in one session, which is a standard market signal that investors believe a deal is likely but not certain.

What Criteo actually does

Criteo sits in a corner of the internet most people never think about but interact with constantly. When you look at a product on a retailer's site and then see that exact product advertised on a news site, a recipe blog, or a social feed hours later, that is often Criteo's system at work. The company uses shopper data and AI to help brands and retailers target people who have already shown buying intent, and it has built a significant business in "retail media," the fast-growing practice of retailers selling ad space powered by their own customer data.

It is unglamorous infrastructure. But it sits at the intersection of two of the biggest shifts in digital commerce: the collapse of third-party tracking cookies (which briefly threatened Criteo's core business model) and the explosion of retail media networks run by companies like Amazon, Walmart, and Target.

Why a private equity firm wants it now

Vista Equity is one of the largest private equity buyers of software and technology businesses in the United States, with a track record of acquiring companies it believes are undervalued relative to their recurring revenue and data assets. The 50%-plus premium it offered suggests Vista sees Criteo's current public market valuation as a discount to what the business is actually worth if operated privately, away from quarterly earnings pressure.

Retail media is a market that research firms have projected will grow significantly through the late 2020s as advertisers chase measurable, purchase-linked results rather than broad brand exposure. Criteo's existing relationships with thousands of retailers and brands represent the kind of sticky, hard-to-replicate customer base that private equity buyers prize.

There is also a strategic logic to taking Criteo private at this specific moment. The company has been navigating the slow death of the browser cookie, a technical change that threatened to strand its core targeting technology. It has been rebuilding around first-party data (information retailers share directly, rather than data scraped from browsers), and that transition is expensive and disruptive to manage as a public company. Private ownership removes the quarterly visibility problem.

What this means beyond the deal

For ordinary people, the immediate consequence is not a price change or a service disruption. Criteo's technology runs in the background, invisible to consumers. But the ownership question matters over time. A private equity buyer acquiring adtech infrastructure at scale tends to accelerate data monetization, because the business model for recovering a large acquisition premium is to extract more value from the asset. In Criteo's case, that asset is behavioral data about hundreds of millions of online shoppers.

Criteo has not yet accepted the offer. If it does, the deal would need regulatory review in France and potentially elsewhere, given that Criteo is a French company with significant European operations and European data rules carry real weight over how that shopper data can be used.

The 50% premium is generous enough that Criteo's board will face real pressure to engage seriously. Whether a higher bidder emerges, or whether Criteo decides its independent path is worth more, is the next question.