Shares of Applied Materials plunged 4.0% to $496.00 on Monday, extending a brutal two-session slide that has now shaved 12% off the stock since last Wednesday's close of $562.80. The catalyst: a report that a Chinese state-backed firm has cracked a manufacturing step Western chipmakers thought they still controlled.
Chip equipment stocks led the drop, with ASML falling more than 7%, dragging Applied Materials, Lam Research, and KLA down with it.
• China Built the Machine the West Tried to Keep Away
China has commenced mass production of domestic immersion DUV lithography machines, with first deliveries expected this year to SMIC, Hua Hong, and CXMT. DUV lithography — the light-based process that prints chip circuitry — is a market ASML has dominated for years. U.S.-led export controls restricted China's access to advanced chipmaking systems, but those very restrictions pushed China to develop its own tools domestically — an effort that has now reached production scale. For Applied Materials, this isn't just about lithography; it signals that Chinese alternatives across all equipment categories are maturing faster than Wall Street assumed.
• A Quarter of Revenue Already at Risk
China represented 24% of Applied Materials' revenue from its two core segments in the most recent quarter, down from 27% the prior quarter — still a substantial concentration for a company riding a global AI wave.
The company already faces a roughly $600 million fiscal 2026 revenue hit from expanded U.S. export restrictions. The DUV breakthrough threatens the remaining China business: if local alternatives improve, even unrestricted Chinese customers may eventually choose domestic suppliers on price and access.
• The Stock's Valuation Leaves No Room for Error
Applied Materials trades at a price-to-earnings ratio of 55.3, far above its 10-year range of 8.6 to 31.9.
That premium assumes the company can flawlessly execute on its forecast for semiconductor equipment revenue to grow more than 30% this year. A 26% drawdown from the June all-time high of $739.67 suggests the market is beginning to reprice that assumption.
• AI Demand Is Real, but So Is the Pattern
Monday's selloff is best understood not as an isolated shock but as the latest data point in a broader trend — earlier in July, a wave of chip selling was triggered after Chinese startup Moonshot AI unveiled a model that cast doubt on Silicon Valley's AI lead.
Applied Materials' underlying fundamentals remain robust, anchored by record gross margins and accelerating demand for advanced packaging and DRAM tools. But each successive China headline chips away at the premium investors pay for growth certainty — and at $496, that certainty is being tested in real time.