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Analysis-European defence stocks cool as investors reassess war winners

Published by Global Banking & Finance Review

Posted on April 20, 2026

5 min read

· Last updated: April 20, 2026

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Analysis-European defence stocks cool as investors reassess war winners
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By Samuel Indyk and Sophie Kiderlin LONDON, April 20 (Reuters) - Investors have cooled on European defence stocks as profit taking and stretched valuations collide with growing uncertainty over the

European Defence Stocks Cool as Investors Reassess Sector Prospects

Market Performance and Sector Analysis

By Samuel Indyk and Sophie Kiderlin

LONDON, April 20 (Reuters) - Investors have cooled on European defence stocks as profit taking and stretched valuations collide with growing uncertainty over the future of warfare, with the Iran conflict again highlighting the effectiveness of low-cost drones.

MSCI's Europe Aerospace and Defence Index dropped 9.2% in March, its biggest monthly fall in five years, as a previously stellar trade began to unwind.

Defence stocks typically rally at the outbreak of war - such as after Russia's full-scale invasion of Ukraine in 2022 - or when U.S. President Donald Trump pressures NATO allies to raise military spending.

But that has not been the case since the Iran conflict erupted on February 28, despite Trump repeatedly berating NATO for not assisting with U.S. military action.

"There has been quite a lot of de-grossing (trimming positions) as financial institutions and retail investors have looked to reduce exposure amid increased uncertainty," said Martin Frandsen, portfolio manager at Principal Asset Management.

Shares in Czech arms maker CSG have dropped almost a third since the conflict began, while Germany's Rheinmetall and Renk are down about 10% and Sweden's Saab is about 12% lower.

Positions Unwind and Valuation Concerns

POSITIONS UNWIND

European defence stocks have been among the market's strongest performers since Russia's full-scale invasion of Ukraine in February 2022, rising more than 450%, compared with a roughly 40% gain for the MSCI Europe index.

The rally was fuelled by pledges from European governments to boost defence spending and Germany loosening fiscal rules last year to turbo-charge its rearmament drive.

But order intake has been slower than some investors expected, with contracts delayed or phased due to fiscal pressures in countries such as France and Britain, according to Morgan Stanley analysts.

Rheinmetall, which manufactures tanks, ammunition and air-defence systems, said it was "inevitable" that countries would spend more on air defence as the Iran war continues, but that has failed to halt the sector's retreat.

While investors remain broadly positive, enthusiasm has cooled and crowded bullish positions have been trimmed, according to a recent note from Citigroup. Crowded positioning can amplify price moves when sentiment turns.

"The start of the Iran war, the consequent sharp rise in energy prices and supply chain dislocations, seem to have shaken off all sorts of crowded trades," said Louis-Vincent Gave, CEO at Gavekal Research.

"So just as gold, silver, copper and other metals pulled back aggressively, so did defence stocks."

Valuation Pressures

Valuations were also a factor. At the outbreak of the war, Europe's aerospace and defence index was trading at about 29 times earnings forecasts, close to a record hit late last year.

"A rise in defence budgets over the coming years was already priced into global defence stock prices," said Hargreaves Lansdown equity analyst Aarin Chiekrie.

"As a result, the recent pullback is partly due to growth expectations in the sector getting ahead of themselves."

Future of Warfare and Technological Shifts

FUTURE OF WARFARE

The Iran conflict has underscored both the cost and intensity of modern warfare, with Gulf states firing hundreds of U.S.-made Patriot anti-missile interceptors priced at about $4 million each.

At the same time, the war has renewed focus on cheaper military solutions that have also gained prominence in the Ukraine war, such as attack drones and drone interceptors like the Ukrainian-designed interceptor from Japan's Terra Drone.

Emergence of Drones and New Technologies

"There is a shift in the 'future of warfare' question since the outbreak of the Iran conflict, with the growing role of new technologies like much cheaper drones bringing into question the demand for legacy more expensive platforms," said Ciaran Callaghan, Amundi's head of European equity research.

Some European defence groups are investing heavily in drones, as well as surveillance and counter-drone systems.

Industry Response and Partnerships

Rheinmetall, for example, struck a deal with U.S.-based Anduril last year to jointly develop European variants of Anduril's Barracuda and Fury drones.

Long-Term Outlook for Defence Stocks

LONG-TERM OUTLOOK UNCHANGED

Despite the correction, analysts say the long-term case for European defence stocks remains solid, with government spending commitments still rising and fund flows suggesting selective buying on weakness.

LSEG data shows net inflows of $1.32 billion into the WisdomTree Europe Defence exchange-traded fund so far in 2026, including a net $377 million since the start of the Iran war.

Two smaller defence ETFs, the iShares Europe Defence ETF and the HANetf Future of Defence ETFs, have attracted a combined $355 million this year, with $124 million since the conflict began.

Analyst Perspectives

"The longer-term growth picture remains intact ... driven by a need for countries around the globe to rebuild their capabilities after decades of underinvestment," Hargreaves Lansdown's Chiekrie said.

(Reporting by Samuel Indyk and Sophie Kiderlin. Editing by Mark Potter)

Key Takeaways

  • MSCI Europe Aerospace & Defence Index fell 9.2% in March—biggest monthly drop in five years, as investors booked profits on lofty valuations.
  • High valuations—around 30× earnings or higher—prompted reassessment, especially as order intake slowed in France and Britain.
  • The Iran conflict highlighted low‑cost drone efficacy over expensive systems, causing concerns about spending priorities and strategy shifts.

Frequently Asked Questions

Why have European defence stocks recently declined?
European defence stocks have declined due to profit taking, stretched valuations, and uncertainty surrounding the future of warfare, especially after the Iran conflict.
What impact did the Iran conflict have on defence stocks?
The Iran conflict did not result in a rally for defence stocks, despite historical trends. Instead, stocks dropped as investors trimmed positions amid increased uncertainty and growing interest in low-cost military technologies like drones.
How has the future of warfare affected defence investments?
Advances in cheaper military solutions such as drones have shifted investor interest away from expensive legacy defence platforms, raising questions about the demand for traditional defence systems.
Which factors contributed to the recent pullback in valuations?
Factors include high valuations, delayed defence contracts, profit taking, and the realization that growth expectations had outpaced actual market developments in the defence sector.
What are some key European companies affected by these market trends?
Czech arms maker CSG, Germany's Rheinmetall and Renk, and Sweden's Saab are among the companies that saw declines following recent conflicts and changing investor sentiment.

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