Tuesday, July 28, 2026
ASML shares fall 6.6% on report of Chinese DUV rival
ASML shares slid 6.6% on July 27 after The Information reported that state-backed Shanghai Yuliangsheng Technology has begun mass-producing domestically developed immersion deep ultraviolet (DUV) lithography machines, ending China's total reliance on ASML for that class of chipmaking tool. About five units are expected to ship this year to SMIC, Hua Hong and CXMT, with roughly 20 more planned for 2027, though the Chinese tools reportedly still trail ASML's on performance, reliability and uptime. ASML, which expects to ship about 130 immersion systems in 2026, still holds a total monopoly on the more advanced EUV machines needed for leading-edge chips.