Interest Rate Fears Drag European Markets Lower As Iran Deal Optimism Fades

European stock markets fell sharply on Tuesday as the initial relief generated by the U.S.-Iran peace agreement gave way to renewed concerns about prolonged elevated interest rates.

The pan-European STOXX 600 declined 1%, reflecting a broad-based pullback across the continent’s major indices as sentiment soured.

Germany’s DAX dropped 1.3%, while France’s CAC 40 and Italy’s FTSE MIB each fell 1%, signalling a coordinated retreat across the eurozone’s largest economies.

In the UK, the FTSE 100 declined 0.7%, a comparatively modest loss against the steeper falls recorded across mainland European markets.

UK investors also continued to digest the political implications of Prime Minister Keir Starmer’s decision to step down from his position.

Financial markets have reacted with relative calm to the leadership uncertainty, with analysts suggesting investors broadly expect Andy Burnham to emerge as the next leader.

The restrained market response suggests that political risk in the UK is not currently viewed as a significant threat to domestic assets or wider investor confidence.

With geopolitical tension in the Middle East easing, investor attention has pivoted back firmly toward inflation dynamics and the future direction of monetary policy.

Market participants are increasingly worried about the lasting inflationary impact of several months of conflict, and whether central banks will need to hold restrictive policies in place longer than expected.

The European Central Bank has already raised rates once this year, and investors continue to price in the possibility of a further move before the end of 2026.

ECB President Christine Lagarde stated that the inflation shock has been “large, but not yet large enough” to significantly alter longer-term inflation expectations, offering some reassurance to markets.

Lagarde also stressed that there is currently no evidence of inflation becoming entrenched through second-round effects or broader de-anchoring of expectations, which analysts welcomed as a measured assessment.

Attention is now turning to the release of June purchasing managers’ index data, which investors hope will provide a clearer picture of economic momentum across the eurozone.

In the United States, the Federal Reserve’s own policy trajectory is adding to global uncertainty, with investors reassessing the likelihood of a prolonged hawkish stance from American policymakers.

That broader reassessment of interest rate expectations across global markets has weighed heavily on equity sentiment despite the improvement in geopolitical conditions across the Middle East.

Analysts believe that without fresh corporate catalysts, European markets may struggle to establish clear direction following the strong rally that carried many indices close to record highs.

The upcoming corporate earnings season is seen as the most likely driver of the next significant move in European equities, giving investors something concrete to assess beyond macroeconomic signals.

Among individual movers, Heineken (EU:HEIA) bucked the broader trend, rising 1.5% after the company announced the appointment of Rafa Oliveira as its new chief executive officer.

The positive reaction to the leadership announcement contrasted with the weakness seen across the wider market, highlighting that company-specific news can still cut through a challenging macro environment.

Until earnings season begins in earnest, traders appear content to reduce exposure and reassess positions as the dominant narrative shifts back from geopolitics to the pressing challenge of persistently high interest rates.