--- title: "Lam Research warned China sales will fall; Qnity, down 9.5% with China a third of revenue, reports Nov. 4" description: "Lam Research said Chinese sales will fall meaningfully and the chip sector sold off on October 22. Qnity, down 9.48% to $108.78, sells what Chinese fabs consume per wafer, so the warning reaches its revenue later but with no cushion, and the November 4 print settles the question." publisher: "The Inference" section: "Chips" published: 2026-10-23T14:12:25.713Z modified: 2026-10-23T14:12:25.713Z canonical: https://theinference.org/article/lam-research-warned-china-sales-will-fall-qnity-down-9-5-with-china-a-third-of-revenue-reports-nov-4 language: en keywords: "Semiconductors, Chip Equipment, China, Stock Moves, Guidance, Earnings" --- # Lam Research warned China sales will fall; Qnity, down 9.5% with China a third of revenue, reports Nov. 4 > Lam Research said Chinese sales will fall meaningfully and the chip sector sold off on October 22. Qnity, down 9.48% to $108.78, sells what Chinese fabs consume per wafer, so the warning reaches its revenue later but with no cushion, and the November 4 print settles the question. The polishing pad is the quiet item on the wafer line. [Qnity Electronics](https://theinference.org/markets/companies/qnity-electronics) (NYSE: Q), the semiconductor materials business [DuPont](https://theinference.org/markets/companies/dupont) spun off in autumn 2025, sells the chemical mechanical planarization pads, slurries and photolithography chemistries that fabs consume on every wafer they run [3]. Revenue tied to wafer output rather than to one-time equipment purchases is likely why a warning from an equipment maker hit the stock so hard this week: consumables follow what fabs actually produce, so a demand signal lands there as well as on the toolmakers. [3] ## Lam's warning moved the whole supply chain The warning came from [Lam Research](https://theinference.org/markets/companies/lam-research) on October 21 [3]. Lam posted [record September-quarter revenue of $8.22 billion](https://weissratings.com/en/instant-news-alerts/qnity-electronics-inc-q-down-5-7-do-i-close-the-door-on-this-trade), up 54% year over year, but guided December-quarter revenue to $8.6 billion with two caveats: supply constraints were holding results back, and China sales will fall meaningfully [3]. On October 22 the supply chain sold off: [Applied Materials](https://theinference.org/markets/companies/applied-materials) down 6%, [ASML](https://theinference.org/markets/companies/asml) down 3%, [Marvell](https://theinference.org/markets/companies/marvell) down 9.40%, [Astera Labs](https://theinference.org/markets/companies/astera-labs) down 10.83%, and Lam down 9.04%, all in morning trading [3]. Qnity [closed down 9.48% at $108.78](https://www.tradingkey.com/markets/stocks/q/financials) [2], leaving it 36.1% below its June 22 high of $177.28. [3] *Chart: **Qnity fell with the sector on October 22, not ahead of it** Bar chart of October 22, 2026, percentage declines for seven semiconductor stocks and the SOXQ ETF, with Qnity highlighted* *Percentage declines, October 22, 2026. Lam Research, Applied Materials, ASML, Marvell, Astera Labs and the SOXQ ETF are morning-trading readings per Weiss Ratings; Qnity is the full-session close per TradingKey. [2][3]* ## Why a third of the revenue base sits in one region The warning reaches Qnity directly through its own numbers. [Asia-Pacific is close to four-fifths of revenue](https://www.ad-hoc-news.de/boerse/news/unternehmensnachrichten/qnity-electronics-aktie-truist-startet-kaufempfehlung/70352345), China contributes roughly a third, and the largest customers are Samsung and [TSMC](https://theinference.org/markets/companies/tsmc) [1]. Pads and slurries are consumed per wafer, so a Chinese pullback in wafer starts flows into Qnity's consumables revenue with a lag and no cushion. Net debt of about $3 billion sharpens the exposure. [1] The complication: Lam said its problem was supply, not demand, and a China decline, not a global one. And Qnity's Q2 was strong [1] [3]. Revenue rose 22% year over year to $1.43 billion, adjusted EPS of $1.19 beat the $1.07 consensus, and management raised 2026 guidance to $5.55 to 5.65 billion of revenue and $4.40 to $4.60 of adjusted EPS. [1] [3] But the growth did not reach the bottom line: net profit fell 34% to $124 million and operating cash flow fell 11.7% to $241 million even as revenue climbed [2]. Costs are rising faster than sales, which leaves less room to absorb a demand shock. [2] *Chart: **Revenue climbed in Q2 while profit and cash flow fell** Bar chart of Qnity Q2 2026 year-over-year changes: revenue up 22.14%, net profit down 34.04%, operating cash flow down 11.72%* *Qnity Electronics Q2 2026 year-over-year changes. Source: TradingKey financials. [2]* ## Apple buys the films, without a price tag There is an American offset, though it carries no price tag. On October 20, [Apple](https://theinference.org/markets/companies/apple) named Qnity a [partner in its American Manufacturing Program](https://www.securities.io/apple-commits-up-to-100-million-to-u-s-titanium-supplier-perryman/), producing the specialty films for the iPhone 18 Pro's variable-aperture camera system [4] [5]. Apple pledged up to $100 million over three years to the titanium partner, Perryman; for Qnity it named no figure at all. [4] [5] ## The November 4 print settles it Qnity reports Q3 before the open on November 4, with consensus at $1.20 adjusted EPS on $1.49 billion of revenue [2] [3]. Two numbers in that report decide it: whether [China revenue holds against Lam's warning](https://theinference.org/article/lam-research-s-china-revenue-was-35-of-sales-and-is-guided-lower-acm-research-reports-nov-5), and whether fab utilization at its biggest customers stays high enough to keep consumables volumes growing. Anyone buying the 36%-off stock into the print should size the position for a third of the revenue base sitting in one region. [1] [2] [3] ## Takeaway Lam Research's warning that China sales will fall meaningfully sent the chip supply chain down on October 22, and Qnity, with China near a third of revenue and consumables tied to wafer output, has the most exposed revenue with the least cushion. Its strong Q2 beat and raised guidance argue the other way, and the November 4 print settles it. ## Sources 1. [Ad-hoc-news.de, QNITY ELECTRONICS Aktie: Truist startet Kaufempfehlung, 2026](https://www.ad-hoc-news.de/boerse/news/unternehmensnachrichten/qnity-electronics-aktie-truist-startet-kaufempfehlung/70352345) 2. [TradingKey, Qnity Electronics Ord Shs Financials, accessed 23 October 2026](https://www.tradingkey.com/markets/stocks/q/financials) 3. [Weiss Ratings, Qnity Electronics, Inc. (Q) Down 5.7% - Do I Close the Door on This Trade?, 22 October 2026](https://weissratings.com/en/instant-news-alerts/qnity-electronics-inc-q-down-5-7-do-i-close-the-door-on-this-trade) 4. [Securities.io, Apple Commits Up to $100 Million to U.S. Titanium Supplier Perryman, 20 October 2026](https://www.securities.io/apple-commits-up-to-100-million-to-u-s-titanium-supplier-perryman/) 5. [Digital Trends, Apple is bringing more of the iPhone supply chain home, one component at a time, October 2026](https://www.digitaltrends.com/phones/apple-is-bringing-more-of-the-iphone-supply-chain-home-one-component-at-a-time/) --- Lam Research warned China sales will fall; Qnity, down 9.5% with China a third of revenue, reports Nov. 4 — The Inference. Canonical: https://theinference.org/article/lam-research-warned-china-sales-will-fall-qnity-down-9-5-with-china-a-third-of-revenue-reports-nov-4