# European stock market volatility

> Live situation record from CLSTR: https://clstr.news/situations/european-stock-market-volatility
> Updated: 2026-09-23T16:44:10.000Z. Sources: 5. Developments: 2.

European stock markets experienced declines on September 23, 2026, driven by geopolitical uncertainties and expectations regarding European Central Bank monetary policy. Major indices, including Germany’s DAX, France’s CAC, Italy’s FTSE MIB, and the UK’s FTSE 100, all recorded losses, while the Stoxx Europe 600 fell 0.44%.

In Greece, the Athens General Index and the FTSE/ATHEX Large Cap index both dropped. While some energy stocks saw gains, Alpha Bank led losses among large-cap stocks. 

Economic indicators showed mixed results, as the Eurozone's private sector activity accelerated with the Composite Purchasing Managers' Index reaching a 41-month high. However, concerns regarding rising costs persist; Ryanair CEO Michael O’Leary warned that high oil prices and refinery capacity issues could significantly increase jet fuel costs, potentially leading to higher ticket prices and airline bankruptcies.

## Timeline

### 2026-09-23: European stock markets decline amid geopolitical risks and ECB policy expectations

European stocks fell amid geopolitical risks and ECB policy expectations. Meanwhile, Ryanair's CEO warned of a 10-20% rise in airfares due to high jet fuel costs.

2 sources. https://clstr.news/cluster/european-stock-markets-decline-amid-geopolitical-risks-and-ecb-policy-expectations

### 2026-09-23: European and Athens stock markets close with losses

European and Athens stock markets closed lower on September 23, 2026, amid geopolitical concerns. Meanwhile, Top Kinisis Travel reported reduced losses for H1 2026 due to strong conference segment growth.

3 sources. https://clstr.news/cluster/european-and-athens-stock-markets-close-with-losses

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Cite as: European stock market volatility. CLSTR, https://clstr.news/situations/european-stock-market-volatility