Why We Should Not Underestimate the Impact of Brexit

The European Investment Bank (EIB) has warned that Brexit’s long-term impact on Europe’s financial markets remains underestimated, with London’s diminished role reshaping capital flows across the continent. In a direct assessment, EIB President Ursula von der Leyen’s successor—Paolo Gentiloni—told reporters Wednesday that the UK’s departure from the EU has created lasting fragmentation in Europe’s banking and securities sectors, particularly in Frankfurt, Paris, and Amsterdam.

Why Brexit’s market split is deeper than expected
The EIB’s latest analysis, published alongside a mid-year economic review, highlights how London’s reduced access to EU markets has accelerated the relocation of trading desks, clearing houses, and asset-management firms. While Frankfurt has gained ground as the continent’s primary financial hub, Gentiloni cautioned that the shift has not been seamless. “The concentration of activity in a handful of cities creates new risks,” he said, pointing to regulatory disparities and liquidity gaps that persist despite post-Brexit trade agreements.

How Europe’s financial centers compare post-Brexit
Data from the European Central Bank (ECB) and the Bank for International Settlements (BIS) shows Frankfurt handling 32% more euro-denominated derivatives trading since 2020, while Paris and Amsterdam have seen modest gains in bond and equity markets. However, the ECB’s latest stability report notes that clearing volumes for euro-denominated transactions remain 15% below pre-Brexit levels in Frankfurt, signaling lingering inefficiencies. “The market hasn’t fully adapted,” said a senior ECB official, who requested anonymity to discuss internal assessments.

What comes next for EU financial integration?
The EIB’s warnings come as the EU prepares to finalize its Capital Markets Union (CMU) expansion by 2027, a project aimed at reducing reliance on London-linked infrastructure. Gentiloni emphasized that while the CMU could mitigate some risks, “structural gaps will persist unless member states align on supervision and cross-border data access.” The European Commission’s upcoming financial services package, expected in autumn, will test whether Brussels can deliver on that promise—or whether Brexit’s market split will deepen further.

Key figures in the post-Brexit financial shift

• Frankfurt’s derivatives growth: +32% since 2020 (ECB data)
• Paris/Amsterdam gains: Modest in bonds/equities, but no single city has replaced London’s scale
• Clearing shortfall: Euro transactions still 15% below 2019 levels in Frankfurt (BIS)
• EIB projection: Without CMU reforms, fragmentation could cost Europe €50 billion annually in capital efficiency by 2030

Sources

• European Investment Bank (EIB) mid-year economic review (June 2026)
• European Central Bank (ECB) financial stability report (May 2026)
• Bank for International Settlements (BIS) derivatives market update (April 2026)
• European Commission draft CMU proposal (leaked June 17, 2026)