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Euronext CEO Stéphane Boujnah has a very specific talent: making a deal sound inevitable and impossible in the same breath. His latest comments on a potential combination with Deutsche Börse follow that tradition almost perfectly.
Speaking in May 2026, Boujnah acknowledged that a merger between Europe’s two largest exchange operators would be logically compelling, then noted that Euronext had already tried to make it happen three times without success. The implication being that the fourth attempt is not exactly on the calendar.
The logic is clear, the obstacles are clearer
On paper, a Euronext-Deutsche Börse combination would create something close to a pan-European exchange behemoth. Euronext already operates bourses in Amsterdam, Brussels, Dublin, Lisbon, Milan, Oslo, Paris, and Athens, covering a combined market capitalization of roughly €6.8 trillion. That figure is nearly triple Deutsche Börse’s own market footprint, which tells you something about the relative negotiating positions involved.
Boujnah has been building toward this scale methodically since taking the CEO role in 2015. The group bought Borsa Italiana from the London Stock Exchange Group in 2021, adding Milan to a network that had been primarily Western European. More recently, Euronext added the Athens Stock Exchange, extending its reach into southeastern Europe.
A Deutsche Börse deal would be a different category of transaction entirely. Frankfurt’s exchange is not just a stock market. It operates Clearstream, one of Europe’s major post-trade and securities settlement infrastructures, along with derivatives platform Eurex. Folding that into Euronext’s architecture would be an integration project measured in years, not quarters.
Then there is the ownership problem. Two of Euronext’s most significant shareholders are state-backed institutions: Cassa Depositi e Prestiti, the Italian state investment bank, and Caisse des Dépôts, its French equivalent, each holding an 8.1% stake. Italian lender Intesa Sanpaolo holds a further 1.55%. Any share-based merger would dilute those positions, which is exactly the kind of outcome that makes government-linked investors uncomfortable.
Boujnah signaled as much in February 2026, when he described potential joint ventures with Deutsche Börse as genuinely interesting while reiterating that neither exchange was for sale.
Why Brussels is paying close attention
The backdrop to all of this is an accelerating European policy conversation about capital market competitiveness. The Capital Markets Union project, which has been discussed in various forms for the better part of a decade, has gained new urgency following Brexit and the broader geopolitical shifts encouraging European financial autonomy.
Euronext is also navigating political pressure from a different direction. The Italian government has been scrutinizing Euronext’s management of Borsa Italiana since the acquisition, with periodic concerns about whether Milan is receiving sufficient strategic priority within the group.
What this means for exchange investors and market structure
The realistic read is that Euronext will continue its current playbook: selective acquisitions of smaller national exchanges, incremental technology investments, and exploratory conversations with Deutsche Börse about specific product or infrastructure collaborations.
What makes this moment notable is the public candor. Exchange CEOs do not typically narrate their failed deal history in testimony and then describe the deal as strategically sound in the next sentence. The fact that Boujnah is willing to say the merger would make sense, while being equally direct that it is not imminent, suggests he is trying to shape the conversation rather than close it.
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