Europe’s AI Trade Hits Reverse

On Monday, European investors experienced the reverse of an AI trade rally as semiconductor stocks with significant exposure to the AI infrastructure boom saw significant declines. ASML, a Dutch company specializing in lithography machines crucial for advanced chip manufacturing, dropped more than 5%, while Soitec, a French semiconductor-materials specialist, fell roughly 13%.

The sell-off followed prominent AI figures advocating for a more cautious pace of frontier-model development, with concerns over the risks posed by increasingly autonomous and capable systems. This was enough to trigger a global unwind in AI infrastructure companies, with ASML, ASM International, Infineon, and Soitec among the worst performers in the Stoxx 600.

Soitec's 12.6% decline was particularly notable as it had recently upgraded its revenue guidance due to accelerating demand for its Photonics-SOI products used in high-speed optical connections inside AI data centers. The sudden reversal suggests investors are now reevaluating the sustainability of the AI infrastructure boom, as the sell-off exposed the optimistic assumptions built into Europe's AI winners.