European Stocks Close Mixed Amid Chip Share Falls

Money markets were pricing an 86% probability of a 25-basis-point Federal Reserve rate increase at the September 15–16 meeting, while swap markets also assigned a high probability to another quarter-point increase in December.
The European Central Bank had raised its interest rate to 2.50% the previous week, adding to pressure from higher borrowing-cost expectations across markets.
Oil’s latest advance followed military strikes on Saudi infrastructure, including an attack on a major oil pipeline; a planned Oman diplomatic meeting on reopening the Strait of Hormuz was also postponed.
Software and pharmaceutical companies provided support for the broader Stoxx 600, helping offset the sharp decline in chip stocks; the Dutch AEX was flat even as Europe’s most valuable company fell 4.2%.
European stocks finished mixed on Monday as oil prices climbed and chip shares plunged. The STOXX 600 remained flat to lower, while Germany's DAX and France's CAC 40 declined. The U.K.'s FTSE 100 gained about 0.5%. Aktiensensor reported that oil volatility and geopolitical concerns weighed heavily on investor sentiment across the continent.
Technology and semiconductor stocks sold off sharply after OpenAI and Anthropic leaders called for a pause in advanced AI development. This sparked worries about chip demand. ASML, BE Semiconductor, and STMicroelectronics all recorded notable declines. Meanwhile, Brent crude jumped to roughly $112 per barrel following attacks on Saudi energy infrastructure and renewed concerns over Red Sea shipping and the Strait of Hormuz.
Chip makers took a beating after industry leaders signaled a need to pump the brakes on AI. The leaders' warnings about advanced AI development raised immediate concerns. Investors worried that data center demand and equipment orders could slow dramatically. Europe's semiconductor giants felt the pain: ASML, BE Semiconductor, and STMicroelectronics all posted sharp declines Monday.
Brent crude climbed to roughly $112 per barrel Monday, driven by military strikes on Saudi energy infrastructure. An attack targeted a major oil pipeline, escalating Middle East tensions. Market Screener noted that oil price volatility continues to dominate European market sentiment. A planned diplomatic meeting in Oman to reopen the Strait of Hormuz was postponed, further complicating global energy supply concerns.
Money markets priced in an 86% probability the Federal Reserve would raise rates by 25 basis points at its September 15–16 meeting. Swap markets also assigned high odds to another quarter-point increase in December. The European Central Bank had already raised its rate to 2.50% the previous week, adding pressure from higher borrowing costs.
Investors waited anxiously for major policy decisions from the Federal Reserve, Bank of Japan, and Bank of England. Higher interest-rate expectations weighed on stock valuations across Europe. Software and pharmaceutical companies provided some relief, helping offset the sharp chip stock declines.
While technology tanked, software and pharmaceutical companies acted as a hedge for Europe's broader market. The STOXX 600 stayed flat to slightly lower thanks to this sector rotation. The Dutch AEX index held flat even as Europe's most valuable company fell 4.2%. Aktiensensor highlighted how life-science stocks and defensive plays provided crucial support during volatile trading.
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