ASML Stock Drops 11% as China Starts Producing DUV Tools

ASML's share price fell 11% after reports that Chinese state-backed Shanghai Aishengna Electronic Technology Group began producing domestic DUV lithography equipment, threatening ASML's 29% revenue exposure to China. Initial Chinese production targets five DUV machines in 2026 and ~20 in 2027, though questions remain about their technical performance and reliability versus ASML's established lead.

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