ASML slid nearly 10% in two days on China's DUV scare, but the case behind it was thin
The news about China’s DUV progress is not particularly surprising.
The Information’s report merely cites remarks made by a professor at one of China’s Jiaotong universities during an internal meeting in June.
The sell-off in semiconductor equipment names such as ASML looks overdone.
ASML shares have slid for two straight days, down roughly 12% over the past month. The trigger was news that China has begun mass-producing its own DUV lithography tools. Chip analyst Jukan and Bank of America (BofA) both argue the reaction has gone too far. Shares fell more than 6% on the 27th when the China DUV news broke, then slid another 4% at the open on the 28th, deepening the drop.
Why isn't this a surprise
Jukan says the news itself isn't particularly shocking. Most people already had a vague sense this was coming, he argues. There's a reason for that. The newly named maker, Shanghai Yuliangsheng, was founded in 2022 by pooling DUV R&D teams from several Chinese firms. SMIC has been testing its lithography tool since September 2025. That's ten months before the news broke on the 27th, meaning the program was already deep into validation.
China begins mass-producing homegrown DUV tools (Tom's Hardware, 2026-07-28)How solid is the sourcing, really
Jukan went a step further. He claims the report actually traces back to remarks a professor at a Chinese Jiaotong university made during an internal meeting. We couldn't independently confirm that specific detail through other outlets. Tom's Hardware and other coverage describe the sourcing only as two people familiar with the program. The manufacturer's name wasn't disclosed at first either, and only surfaced later as Yuliangsheng. ASML itself declined to comment when asked. The reporting clearly leans on anonymous sourcing, but exactly whose words are behind it differs by outlet.
China starting DUV mass production reads as the first real crack in ASML's lithography monopoly.
The report leans on two anonymous sources and ASML wouldn't confirm it. Next year's output still caps at 20 units, more a confirmation of an already-known program than new news.
What it comes down to is whether you treat this as fresh news or as confirmation of a program that's been running for ten months already.
Where is the market actually placing its bets
BofA kept its Buy rating on ASML through the selloff. Its reasoning: this is a trade-related worry, not a sign anything is wrong with the business. BofA's 2027-2028 earnings estimates sit 6-7% above Wall Street consensus. It expects AI-driven wafer fab equipment spending to top $250 billion by 2028.
What settles it
The question comes down to one thing. Is this a real reassessment of the threat, or an overreaction to thinly sourced news. The fact that a single report leaning on two anonymous sources knocked nearly 10% off the lithography sector's bellwether in two days says something about how jumpy this market already is. What will tell the difference is earnings and volume. If ASML's strong results continue next quarter and China's output doesn't run far ahead of next year's 20-unit plan, this drop goes down as an overreaction. If volume ramps faster than expected, or Chinese customers start actually pulling orders from ASML, this drop was the start of the real repricing.
- ASML shares fell nearly 10% in two days on news of China's homegrown DUV output.
- On the surface, it reads like the first crack in ASML's lithography monopoly.
- But the report leans on two anonymous sources, and the program had already been running for ten months.
This author's record
- BullThe next AI hardware bottleneck isn't memory. It's a tiny capacitor whose price…
- BullWhy did chip stocks keep falling even after a string of earnings beats?
- BullThe inside story of how Samsung is lifting DRAM output 15% at Hwaseong without…