ASML's selloff on China's domestic DUV news is an overreaction because the revenue hit is small and China is nowhere on EUV, ASML's real moat. China is making about five DUV machines this year versus the hundreds ASML delivers. BofA, which also calls the selloff an overreaction, estimates China going domestic cuts ASML's sales by about EUR 1.4B next year, or 2.4%, yet the stock fell about 6%. It helps China's chip independence far down the road but leaves ASML oversold today. x.com  x.com 

ASML's 6% drop on a report of Chinese immersion DUV mass production is no cause for panic. Per a Chinese semiconductor expert, the first-gen tool is five or six generations behind ASML's 1980-class machines, which Chinese fabs already stockpile, and SMEE's six dry DUV tools sold in 2023 never ran production. No Western fab is likely to qualify a Huawei-linked tool, the lost revenue was already exiting under export controls, and lithography isn't China's binding constraint. x.com  x.com 

ASML faces moat erosion now that China has a homegrown alternative to its machines. The Information reports a state-backed Shanghai company has started mass-producing DUV lithography tools. Chinese fabs stockpiling older DUV tools had become a major revenue driver, with China at 36% of sales in 2024 and 29% last year. Output is tiny, about five machines this year and maybe twenty next. But once a second supplier exists, the question shifts from "no alternative" to "for how long." x.com 

ASML cannot make enough EUV machines to meet demand, which it says will outrun supply through 2028. Its 2026 sales guide rose from €34-39 billion to €44-45 billion, and gross margin hit 57.5%. The combination of an EUV monopoly, demand outrunning supply and growing pricing power is rare. x.com 

China's homegrown DUV tool poses little threat to ASML because it remains almost 20 years behind. Per the Financial Times description, the immersion DUV system SMIC is testing resembles ASML's 2008 NXT:1950i for 32nm-class processes, and having a tool doesn't mean matching defect rates or throughput, as Canon and Nikon show. China has stayed roughly 20 years behind for a decade and is not meaningfully accelerating against ASML. x.com  x.com  x.com  x.com  x.com  x.com 

ASML could break down from here on the China news. x.com 

The selloff in ASML and BESI on China's new immersion DUV tools is an overreaction with minimal real impact. China plans five units this year and 20 in 2027 for SMIC, Hua Hong and CXMT, under 4% of ASML's roughly 130 annual immersion DUV shipments. DUV can make 7nm chips via multi-patterning, but at higher cost, lower capacity and more alignment errors, and EUV is a fundamentally different technology. Nikon and Canon face the most pressure. x.com 

ASML's EUV R&D is starting to pay off through operating leverage. Q3 R&D fell as a share of sales, though one quarter is not a trend. Higher units, IBM sales and EUV/DUV prices put 2028 estimates well above the 2030 guide and ahead of consensus; shares look cheap at €1,530. Assuming 30% prepayment, liabilities imply €42-45bn of orders in 2026's first nine months, subject to invoicing lags. The proposed MATCH Act could restrict China sales; 2029-30 demand is less certain than 2028. x.com  x.com  … Show more

ASML has yet to fall despite losing its biggest customer, TSMC, until 2029, a customer responsible for 70% of its revenue. That disconnect reflects the current state of the chip bubble. x.com 

ASML remains the undisputed lithography champion because DUV and EUV scarcity will ultimately be the real bottleneck to scaling AI compute. Wall Street sold semicap on a Shanghai firm building five 2008-vintage DUV tools, which threaten approximately none of ASML's moat this decade. Meanwhile, Situational Awareness put $500 million into Source Foundry, a startup aiming to break ASML's monopoly by redesigning chip manufacturing. Whoever breaks that monopoly wins, but it is a tough race. x.com