Frankfurt’s DAX 40 extended its decline on Monday, falling 1.8% to slip below the 22,000 level, its lowest point since April 2025. Investor sentiment was hit by rising tensions between the United States and Iran over the weekend. Donald Trump’s ultimatum to Tehran over the Strait of Hormuz, coupled with Iranian threats to strike strategic infrastructure, has intensified global economic uncertainty. All sectors finished in negative territory, with technology, financials, and industrials among the weakest performers.