Euronext–Deutsche Börse Merger Talk Returns, but No Deal Is Under Way

Boujnah has revived the strategic case for a Euronext–Deutsche Börse tie-up without announcing a transaction. His central message was narrow but consequential: combining the groups’ exchange businesses could make sense, potentially creating a pan-European market-infrastructure group with global scale. At the same time, he said there were no current conversations between the companies. 15

What Boujnah is proposing—and what he is not

Boujnah did not rule out a full merger. But his comments focused on a possible combination of the exchange businesses rather than a confirmed, all-encompassing corporate deal. That distinction matters: a transaction limited to selected activities may be easier to structure than a full merger across trading, clearing and other infrastructure.

The strategic appeal is scale. A larger combined operator could potentially bring together liquidity across markets and give Europe a more substantial exchange platform at a time when policymakers are trying to make European capital markets deeper and more competitive. 122

For now, however, the status is straightforward: this is merger speculation, not a live negotiation. 15

How the latest comments differ from May

The economic argument is not new. At an Italian parliamentary hearing in May, Boujnah said a merger with Deutsche Börse “would make sense,” while also saying he did not expect one in the near future. He noted that Euronext had already sought such a merger three times. 2

His September remarks are more open-ended in tone because he expressly described a combination of the exchange businesses as a sensible deal and did not exclude a full merger. Yet the key constraint remains unchanged: there are no talks underway. 12

How investors reacted

Investors responded positively to the revived possibility. Reuters reported that Euronext and Deutsche Börse shares each rose around 2% on September 14 after Boujnah’s comments. 1 Midday market reporting put Euronext up 2.2% and Deutsche Börse up 3.3%. 21

There is not sufficient evidence in the available reporting to claim a uniform, quantified move across every other listed exchange operator. The immediate reaction was clearest in the two companies directly involved.

Why a deal could appeal strategically

A combination could fit the broader case for less fragmented European capital markets. The European Commission says EU stock-market capitalisation is equivalent to 73% of GDP, compared with 270% in the United States, and describes EU markets as underdeveloped and fragmented. 35

That creates a clear commercial and policy rationale for larger cross-border market operators:

• Greater scale and liquidity: Linking major exchange businesses could make it easier to connect investors and issuers across markets.
• Stronger European market infrastructure: A larger operator could support the EU objective of more integrated trading and post-trading markets. 2936
• Potential operating efficiencies: Combining overlapping exchange activities could, in principle, reduce duplication in technology and operations.

These are strategic possibilities, not announced transaction benefits. Any eventual deal would need to show that its efficiencies outweigh its effect on competition and market access.

Antitrust and regulatory barriers are the real test

Boujnah himself acknowledged that a full merger would face significant regulatory hurdles. 5

Competition authorities would be expected to scrutinize the overlap in exchange and adjacent market-infrastructure services. The European Commission’s earlier review of the proposed Deutsche Börse–London Stock Exchange merger illustrates the issues regulators can examine, including competition in clearing, derivatives and index licensing. 26

A Euronext–Deutsche Börse transaction would also sit within a wider policy push to reform trading and post-trading infrastructure. The Commission’s market-integration work aims to reduce barriers to cross-border activity, while EU institutions continue to identify supervisory fragmentation, tax disparities and infrastructure differences as obstacles to a more integrated capital market. 2934

That means the hurdle is not simply whether two companies want a deal. Regulators and national authorities would need to assess competition, resilience and the governance of market infrastructure. Remedies or structural limits could shape—or potentially weaken—the economics of any agreement.

Boujnah’s 2027 departure adds uncertainty

Boujnah has said he will complete his third term at Euronext’s May 2027 annual meeting, and the supervisory board is managing the succession process. 48 Giorgio Modica is Euronext’s chief financial officer and has been reported as one possible internal candidate, but no successor has been selected. 4549

The succession matters because a complex cross-border combination would require sustained support from Euronext’s next leadership team, Deutsche Börse, both boards, shareholders and regulators. A successor could preserve Boujnah’s consolidation logic, alter it, or prioritize Euronext’s existing strategic plan instead.

A corporate idea inside a wider European policy project

Renewed merger talk fits the EU’s Savings and Investments Union agenda, which seeks to deepen, integrate and strengthen European capital markets, improve liquidity and reduce fragmentation across member states. 36

But a corporate merger would not, on its own, create a true single capital market. The ECB points to persistent obstacles including fragmented supervision, tax disparities and differences in market infrastructure. 34 A larger exchange group could contribute to scale, but policymakers’ broader competitiveness goal depends on regulatory and structural reform as well.

For investors, the near-term conclusion is simple: Boujnah has made a long-discussed option more visible again, and the market has noticed. But no negotiations have been disclosed, and the regulatory path would be exceptionally demanding. 15