US bipartisan MATCH Act proposal would tighten export restrictions on semiconductor manufacturing tools to China, targeting firms like ASML.
ASML shares fell 4% in Amsterdam, while ASM International and BE Semiconductor slipped modestly after the news.
The draft would ban immersion lithography tool exports and service to Chinese chipmakers such as SMIC, Huawei, and YMTC.
Bank of America maintains a Buy rating on ASML, noting potential EBIT impact limited to 8‑9% if memory upcycle continues.