European AI and semiconductor stocks have surged over 100% year-to-date in 2026, pushing the STOXX Europe 600 up approximately 10-11%. Sweden’s Sivers Semiconductors stood out with gains exceeding 2,000%, while giants like ASML and Infineon drove the broader trend. According to TS Lombard, AI-themed stocks contributed to over two-thirds of positive performance in European equities during the period ending May 2026. The DAX, CAC 40, and FTSE MIB all reached or approached record highs. ASML raised its 2026 full-year revenue forecast in July, citing robust AI-driven demand for its lithography machines.
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