ASML drops as TSMC pushes high‑NA EUV adoption out to 2029

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ASML shares are sliding after TSMC signaled it won’t use ASML’s next-generation high‑NA EUV lithography tools for volume production through 2029. The pushout raises concerns about how quickly ASML’s highest-priced systems will scale into revenue, pressuring the stock today.

1. What’s driving ASML lower today

ASML is down about 3% after new reports indicated Taiwan Semiconductor Manufacturing Co. plans to postpone adopting ASML’s most advanced high‑numerical‑aperture extreme ultraviolet (high‑NA EUV) lithography machines for chip production through 2029. The market reaction reflects investor sensitivity to high‑NA timing because these tools are viewed as the next major step-change in lithography capability and a key pillar of ASML’s longer-term growth narrative. (investing.com)

2. Why TSMC’s decision matters for ASML’s growth mix

High‑NA EUV systems are premium tools with very high unit economics, and a delay by ASML’s largest customer shifts expectations for when high‑NA becomes a meaningful contributor to sales. The reports also highlight that TSMC intends to keep using current-generation EUV systems for several more years, which can slow the expected mix shift toward the newest platform even if overall demand for standard EUV remains healthy. (investing.com)

3. Context: ASML’s broader outlook vs. a high‑NA timing reset

The pullback comes shortly after ASML raised its 2026 revenue outlook to €36–€40 billion on stronger AI-driven demand and new orders, underscoring that the core cycle for leading-edge tools is still robust. Today’s move is more about the market repricing the timeline for the highest-end high‑NA ramp—especially if investors had been anticipating earlier, faster adoption by TSMC. (finance.yahoo.com)