Understand the Business
- ACM sells build-to-order semiconductor process tools for cleaning, plating, packaging and newer deposition or furnace steps; revenue grows when chipmakers qualify tools and buy repeat systems.↗↗
- Value comes from customer-specific equipment for yield-critical steps, but first tools can sit in qualification before acceptance, delaying revenue and cash collection.↗
Why this business is different
- Its edge is local presence in China and Asia, where customers often prefer local suppliers; that helps win qualifications but concentrates exposure to regional spending and trade policy.↗↗
- Qualification creates stickiness once a tool meets a node’s specifications, yet ACM competes against larger global incumbents and mainland China suppliers across several product lines.↗
What could matter next
- The upside question is whether panel electroplating and plasma-enhanced chemical vapor deposition move from first orders and validation into repeat production platforms.↗↗
- The risk is whether lower gross margins, trade-policy constraints or delayed first-tool acceptances keep the 2026 revenue guide from translating into earnings.↗↗↗
Why the Stock Moved
- February 2024 · Growth validated: Growth expectations improved as ACM showed 2023 expansion with a larger 2024 guide. FY2023 revenue rose 43.4% and operating income increased; management forecast $650 million to $725 million of 2024 revenue. That supported higher future revenue and profit confidence.↗
- February 2025 · Model upgraded: Expectations moved toward a larger 2025 base with better margin potential. On February 26, 2025, ACM maintained 2025 guidance of $850 million to $950 million and raised its gross-margin target to 42% to 48%. That improved the earnings-conversion case.↗↗
- February 2026 · Margin reset: Confidence in margin conversion weakened. On February 26, 2026, Q4 gross margin was 40.9% versus 49.6% a year earlier. Lower margins made revenue growth less valuable.↗↗
ACMR price history
Loading recent earnings…
Investment thesis
What must happen next
Revenue growth must keep coming from accepted production tools, not only first-tool shipments awaiting customer validation.StrengtheningMateriality: High
Q2 revenue rose 36% to $292.9 million; shipments of $281.5 million included first tools awaiting acceptance and therefore are not equivalent to recognized sales. The largest earnings driver is whether installed tools lead to repeat purchases and more process steps per customer, lowering dependence on one-off evaluations.
Watch: Watch shipments, accepted tools and product-category revenue for repeat use rather than evaluation-only deployments.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Sales grew, while the shipment measure also included evaluation systems awaiting potential later revenue recognition.
Open source ↗Customer-specific evaluation can delay sales and create inventory exposure.
Open source ↗The stock needs new packaging and deposition tools to convert from validation milestones into repeatable product lines.StrengtheningMateriality: High
One panel-plating production tool is scheduled for first-half 2027 delivery and one evaluation tool for fourth-quarter 2026; the first SiCN deposition system is undergoing customer validation. Advanced packaging expands ACM beyond its historical cleaning strength and can increase revenue per customer if orders become production platforms.
Watch: Watch whether the Ultra ECP ap-p electroplating and deposition systems receive follow-on production orders after scheduled deliveries and validation.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
The two panel tool orders have distinct production and evaluation status and future delivery schedules.
Open source ↗The deposition system met laboratory specifications before shipping for customer-site validation.
Open source ↗Earnings power depends on gross margin holding up as newer products scale.WeakeningMateriality: High
Q2 gross margin fell to 46.0% from 48.5%. Reported profit also benefited from a $69.6 million unrealized investment gain; adjusted attributable income was $44.5 million versus $89.0 million GAAP. ACM’s valuation can compress if product mix, competition or execution costs keep margins below the level implied by growth expectations.
Watch: Watch operating margins and adjusted attributable profit separately from investment revaluations and changes in subsidiary ownership.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Fourth-quarter gross margin fell below the long-term target range, partly on mix, competition and inventory charges.
Open source ↗The latest quarter had lower gross margin, and a substantial investment revaluation separated GAAP from adjusted attributable profit.
Open source ↗The thesis depends on ACM serving customers despite trade-policy and supply-chain pressure.HoldingMateriality: High
The annual filing says Entity List designations stopped some U.S. suppliers serving ACM Shanghai, ACM Korea and related entities; alternatives need qualification. ACM benefits from Asian customer relationships, but trade policy and supply-chain constraints can affect components, service or customer buying plans.
Watch: Watch guidance commentary about trade policy, Entity List impact and supply-chain constraints.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Supplier restrictions are already operative; replacement sourcing and qualification remain execution risks.
Open source ↗The revenue outlook remains conditional on trade policy, supply constraints and tool acceptance timing.
Open source ↗Process performance and cost of ownership must justify ACM tools against larger rivals without destructive price competition.HoldingMateriality: Medium
The 10-K says ACM sells tools for yield-critical steps and identifies major global and local competitors. Technology breadth matters only if ACM’s tools keep meeting customer specifications against larger global and local equipment rivals.
Watch: Watch losses to Lam, SCREEN, Tokyo Electron, NAURA, SEMES, Kokusai, Applied Materials or newer mainland China competitors.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Customers invest in qualification and tend to retain proven tools, but larger vendors and new Chinese competitors constrain pricing and adoption.
Open source ↗
Full investment case & evidence
Loading the original research archive…
Original research
Revenue growth must keep coming from accepted production tools, not only first-tool shipments awaiting customer validation. The largest earnings driver is whether installed tools lead to repeat purchases and more process steps per customer, lowering dependence on one-off evaluations.
The stock needs new packaging and deposition tools to convert from validation milestones into repeatable product lines. Advanced packaging expands ACM beyond its historical cleaning strength and can increase revenue per customer if orders become production platforms.
Earnings power depends on gross margin holding up as newer products scale. ACM’s valuation can compress if product mix, competition or execution costs keep margins below the level implied by growth expectations.
The thesis depends on ACM serving customers despite trade-policy and supply-chain pressure. ACM benefits from Asian customer relationships, but trade policy and supply-chain constraints can affect components, service or customer buying plans.
Process performance and cost of ownership must justify ACM tools against larger rivals without destructive price competition. Technology breadth matters only if ACM’s tools keep meeting customer specifications against larger global and local equipment rivals.
All standing thesis claims
Original report summary
customers keep qualifying ACM’s cleaning, electroplating and packaging tools for repeat production, while China concentration and trade-policy risks do not overwhelm margins.
Since this case
What has happened since Sep 29, 2026
The case above was written from evidence through Sep 29, 2026 and stays as written. This part is read from SEC filings and closing prices each time the page is built, so it moves as new reports are filed.
- Results
- The financial statements could not be read just now.
- Share price
- The price since this case could not be read just now.
- Filings
- The filings since this case could not be read just now.
- Insiders
- Insider filings since this case could not be read just now.
- Conditions
- CEO / officer change (Nov 3, 2026) crossed since Sep 29, 2026. What has followed each across the market is in the Thesis-Break panel.
Bull case and bear case
Bull case and bear case for ACM Research, Inc.
Where the evidence on ACM Research disagrees: Mixed on the latest evidence (Sep 29, 2026). Of its 5 thesis points, 2 strengthening, 2 holding and 1 weakening.
Bull case: what the evidence supports
Revenue growth must keep coming from accepted production tools, not only first-tool shipments awaiting customer validation.
The stock needs new packaging and deposition tools to convert from validation milestones into repeatable product lines.
The thesis depends on ACM serving customers despite trade-policy and supply-chain pressure.
Process performance and cost of ownership must justify ACM tools against larger rivals without destructive price competition.
Bear case: what the evidence questions
Earnings power depends on gross margin holding up as newer products scale.
Thesis-Break Engine
What has broken in ACM Research’s thesis
Each break OptimistFi flagged on ACM Research, dated — with what has historically followed the same kind of break across the market, not a forecast for ACM Research.
- CEO / officer changecondition set before this filing
Across all companies, this kind of break has happened 16,849 times before. Those stocks trailed comparable companies by a median of 2% over the next six months, and 38% of them trailed it by 10 points or more.
MARKET + FINANCIAL SNAPSHOT
The numbers behind the thesis
What Changed
- SupportiveQ2 guidance raised
ACM raised only the lower end of its 2026 revenue guide, from $1.08 billion to $1.125 billion; the upper end stayed $1.175 billion. Q2 revenue growth improved visibility, but lower gross margin and investment-driven GAAP gains qualify the earnings picture.
- SupportivePanel orders carry different delivery and validation tests
The issuer reported one panel-plating production order for delivery in first-half 2027 and one evaluation order for fourth-quarter 2026. These are distinct commercial milestones, not two accepted production installations or current revenue.
- MixedDeposition tool enters customer validation
ACM shipped its first plasma-enhanced chemical vapor deposition silicon carbonitride system for customer validation. The shipment broadens ACM’s served process steps, but revenue depends on successful validation and follow-on orders.
Risks / falsifiers
What could break the thesis
- Watch shipments, accepted tools and product-category revenue for repeat use rather than evaluation-only deployments.
- Watch whether the Ultra ECP ap-p electroplating and deposition systems receive follow-on production orders after scheduled deliveries and validation.
- Watch operating margins and adjusted attributable profit separately from investment revaluations and changes in subsidiary ownership.
- Watch guidance commentary about trade policy, Entity List impact and supply-chain constraints.
- Watch losses to Lam, SCREEN, Tokyo Electron, NAURA, SEMES, Kokusai, Applied Materials or newer mainland China competitors.
ACMR news
Loading headlines…
Financial statements
ACMR income statement
Annual filed results · USD · Oldest to newest. Margins are calculated from the reported figures.
ACMR: quick answers
- When does ACM Research (ACMR) report earnings next?
- ACM Research's next results are projected for January 21, 2027, from the dates of its own results filings with the SEC. The company has not confirmed the date. It last reported on November 5, 2026. Earnings calendar
- What is ACMR's short interest?
- As of October 30, 2026, 3.0M ACMR shares were sold short, 4.57% of its shares outstanding, down 14.7% from the count before. At the stock's average daily volume that is 3.0 days to cover. FINRA publishes the count twice a month. ACMR short interest history
- Have members of Congress traded ACMR?
- Reports made public in the last 90 days disclose 1 trade in ACMR by 1 filer: 0 purchases and 1 sale. They are filed under the STOCK Act by members of Congress, the President and senior officials. Every disclosed ACMR trade
- Which well-known investors own ACMR?
- 1 of the 37 well-known funds tracked here reported ACMR shares in their latest 13F filing. By share of the fund's portfolio: Maverick Capital, 0.0%. Fund portfolios
ACMR in well-known investors’ portfolios
1 of 37 funds reported ACMR shares in their latest 13F filing. A 13F shows quarter-end positions and arrives up to 45 days later.
| Fund | Of its portfolio | Value | Change | Quarter |
|---|---|---|---|---|
| Maverick Capital | 0.01% | $674K | New | Q2 2026 |