ACM Research: SPM Cleaning Breakthrough and ECP Surge Drive 34% Revenue Growth, But Net Income Slips as New Products Await Revenue Conversion
Q1 2026 Earnings Call, May 7, 2026
ACM Research opened 2026 with first-quarter revenue of $231.3 million, up 34.2% year-over-year, and gross margin of 46.5%, comfortably above the midpoint of the company's long-term 42%-to-48% target range. However, the headline growth masked a more complicated picture underneath: net income attributable to ACM Research fell to $24.3 million from $31.3 million in the prior-year period, and earnings per diluted share declined to $0.34 from $0.46, a drop of roughly 26%. The company maintained its full-year 2026 revenue guidance of $1.08 billion to $1.175 billion, implying approximately 25% growth at the midpoint.
SPM Cleaning: The Most Consequential New Disclosure
The single most important new piece of information from this call was CEO David Wang's announcement of a significant production ramp for ACM's proprietary single-wafer SPM cleaning tool, with 15 to 20 units expected to be delivered to customers across its base by year-end. This matters because SPM cleaning processes represent approximately 30% of the overall cleaning market, and ACM is directly targeting the incumbent market leader. Wang was direct about the competitive claim: "Our system does not need a periodical DI water cleaning of the process chamber and the surrounding environment to remove residue generated by the hot SPM films. Instead, our unique module design provides a maintenance-free solution as the chamber does not need to be taken offline for periodical DI water cleaning." He further stated that the tool achieves fewer than 15 particles at the 15-nanometer level, better than the market leader, and has since been pushed further to 13-nanometer performance.
The cleaning segment itself was down 5.5% in revenue terms during Q1, which Wang attributed to a prolonged period of application-specific problem-solving with customers across mature and advanced nodes throughout 2025. Critically, however, he noted that most of those issues have been resolved, and cleaning shipments grew 32% year-over-year in Q1. Purchase order backlog for cleaning in the first half of 2026 was up roughly 50% compared to the first half of 2025, according to Wang, offering a forward-looking indicator that the revenue softness is likely transitional. CFO Mark McKechnie confirmed that for the full year, cleaning is expected to normalize back toward 65% of total revenue, in line with 2025 levels.
The Lingang Mini Line: A Structural Shift in How ACM Qualifies Tools
A second significant disclosure was the operational impact of ACM's fully functioning R&D mini line at its Lingang facility, which went into full operation in the second half of 2025. Wang described what amounts to a fundamental change in the company's product qualification model: rather than shipping evaluation tools to customers and waiting through extended on-site qualification cycles, ACM is now able to simulate customer-specific production environments internally before shipment. "For new product, rather than delivering multiple tools for extended customer evaluation, we now process customer wafers on our new product in the Lingang mini line to validate the tool to meet the customer-specific requirements before shipment," Wang said. He expects this to shorten qualification cycles from what was previously "more than a year" to "a few quarters," with direct implications for capital efficiency and the speed of revenue conversion.
The first concrete example of this was the PECVD silicon carbon nitride system shipped to a leading semiconductor manufacturer in April, which had already completed customer-specific validation at Lingang prior to delivery. The SPM tool ramp similarly benefited, with ACM testing its tool alongside a leading customer at Lingang for several months before achieving volume orders. Wang characterized this capability as "a big deal" for ACM's operating model going forward.
ECP Leads Growth, Advanced Packaging Broadens
The ECP, furnace, and other technologies segment was the primary revenue engine, posting $84.2 million, up 204.9% year-over-year, and representing 36.4% of total sales. Wang attributed the surge to strength in front-end copper plating and HBM-driven demand, as well as broad advanced packaging activity supporting 2.5D integration architectures. When pressed by Needham analyst Denis Pyatchanin on the durability of this trend, Wang pointed to both front-end and packaging tailwinds continuing and noted that panel-level copper plating tools are expected to begin contributing meaningfully to revenue and shipments in 2027.
On panel-level horizontal plating specifically, ACM delivered the world's first horizontal plating tool in the 515x510mm format to a customer in Q4 2025, and is now building backlog for both 515x510mm and 310x310mm formats. Wang expressed confidence that "successful customer evaluation will lead to volume production orders for 515x510 and additional evaluation of 310x310 later this year."
Advanced packaging revenue, excluding ECP but including services and spares, was $24.5 million, up 62%, representing 10.6% of sales. Notable Q1 milestones included shipment of a panel-level vacuum cleaning system to a leading global packaging manufacturer outside mainland China and delivery of multiple wafer-level advanced packaging systems to a leading OSAT customer in Singapore, extending ACM's geographic footprint beyond its core China base.
Gross Margin Recovery, but Profitability Under Pressure
The 46.5% gross margin represented a meaningful recovery from the low-40% range posted in Q3 and Q4 of 2025, driven by favorable product mix and a slightly lower inventory provision impact. However, operating expenses of $65.8 million grew 38.5%, outpacing revenue growth, as ACM continues to invest heavily in R&D, which ran at 15% of sales in Q1. For 2026, the company is guiding R&D to 16%-18% of sales, which will weigh on operating margins. Operating margin was 18.1% versus 20.7% in Q1 2025. McKechnie indicated the long-term plan is to show operating leverage in SG&A while growing R&D roughly in line with revenue, but near-term the investment cycle is clearly compressing earnings.
The tax rate of approximately 8%-10% guided for 2026 is a modest tailwind, but net income pressure remains. The company also flagged that stock-based compensation will increase in Q2 due to option grants related to ACM Shanghai stock, adding further near-term EPS headwind.
Balance Sheet and Capital Allocation
ACM ended the quarter with gross cash of $1.25 billion and net cash of $924.2 million, up from $844.5 million at year-end 2025. The improvement was partly driven by approximately $110 million in gross proceeds from the February minority share sale of ACM Shanghai. Total inventory rose to $738 million from $702.6 million at year-end, with raw materials up $28.3 million sequentially as the company made "additional strategic purchases to support production plans and to mitigate potential supply chain risk," per McKechnie. Capital expenditure guidance for 2026 was raised to approximately $175 million. The Lingang campus, with two buildings, is expected to support up to $3 billion in annual output once the second building opens later this year, providing manufacturing capacity runway well ahead of current revenue levels.
Oregon Facility and Global Footprint
ACM's Oregon facility is on track to have an in-house demo lab with multiple tools and the capability to produce U.S.-made tools by year-end 2026. By end of 2026, the company expects more than 20 tools installed outside mainland China across approximately 10 customers in five countries. Wang acknowledged these are "early days for our global deployment" but signaled that the investment in global sales and service infrastructure is building toward the company's long-term ambition of becoming a top-tier global capital equipment supplier, with a $4 billion revenue target as its stated goal. ACM Shanghai also announced a proposed H-share secondary listing in Hong Kong in April, which would further formalize the subsidiary's capital markets presence.
ACM Research, Inc. Deep Dive
Business Model and Technological Moat
ACM Research operates as a highly specialized provider of front-end semiconductor capital equipment, deriving the vast majority of its revenue from single-wafer wet-cleaning systems. In the semiconductor fabrication process, wet cleaning is a critical, highly repetitive step necessary to remove microscopic particles, chemical residues, and native oxides from the wafer surface without damaging the delicate architectural features of the chip. As transistor geometries shrink below 28 nanometers and shift toward complex three-dimensional structures like FinFET logic and 3D NAND memory, the margin for error in cleaning approaches zero. Traditional batch cleaning methods are increasingly inadequate for these advanced nodes, requiring sophisticated single-wafer solutions. ACM Research generates revenue by selling these multimillion-dollar cleaning tools, alongside a growing portfolio of complementary equipment, and by providing ongoing spare parts and maintenance services to its semiconductor foundry and memory manufacturing clients.
The company has carved out a distinct technological moat centered around three proprietary architectures: Space Alternated Phase Shift, Timely Energized Bubble Oscillation, and the hybrid Tahoe platform. Space Alternated Phase Shift technology utilizes megasonic waves to deliver uniform acoustic energy across the wafer surface, effectively dislodging particles from deep trenches in advanced memory structures without causing structural collapse. Timely Energized Bubble Oscillation builds upon this by controlling the cavitation of bubbles during the cleaning process, providing a stress-free scrubbing mechanism that is essential for fragile architectures. These two technologies form the bedrock of the company's competitive advantage in single-wafer cleaning. Furthermore, the company has heavily disrupted the traditional sulfuric peroxide mix cleaning process with its Ultra C Tahoe tool. By combining batch wafer processing and single-wafer cleaning chambers into a hybrid system, Tahoe drastically reduces the consumption of highly corrosive and expensive sulfuric acid by up to 75 percent. This not only yields an estimated $500,000 in annual chemical cost savings per tool for high-volume manufacturers but also solves a major environmental bottleneck regarding post-process waste treatment, all while delivering throughputs exceeding 200 wafers per hour.
The End-Market Ecosystem: Customers, Competitors, and Market Share
ACM Research is deeply entrenched in the Chinese semiconductor ecosystem, operating essentially as the premier domestic supplier of wet-cleaning equipment. The customer base is highly concentrated among the apex predators of Chinese silicon. Historically, just four clients have accounted for over 52 percent of the company's annual revenue. This roster includes Semiconductor Manufacturing International Corporation, Yangtze Memory Technologies, ChangXin Memory Technologies, and Hua Hong Semiconductor. Additionally, the company serves Entity List-linked fabrication plants such as Pengxinwei. The sheer scale of domestic capital expenditure required to insulate China from Western supply chain shocks has transformed these customers into aggressive buyers of localized equipment, effectively force-feeding market share to ACM Research and enabling the company to report outsized growth figures even during periods of global semiconductor digestion.
The global competitive landscape for wafer cleaning equipment is a moderately concentrated oligopoly where SCREEN Semiconductor Solutions, Tokyo Electron, Lam Research, Applied Materials, and ACM Research control an estimated 65 percent of global revenue. SCREEN remains the undisputed global hegemon in wet benches and single-wafer cleaning, holding roughly 40 to 50 percent of the worldwide market. However, within mainland China, the competitive dynamics are fundamentally altered by state-sponsored localization mandates. ACM Research is rapidly displacing SCREEN and Lam Research inside Chinese fabrication plants. Domestically, ACM Research's primary threat is not Western incumbents, but rather Naura Technology Group, China's largest semiconductor equipment manufacturer. Naura has aggressively expanded its portfolio beyond etching and deposition to encompass wet cleaning. In 2025, Naura took a strategic minority stake in Kingsemi, a domestic manufacturer of track and cleaning equipment. This move signals a deliberate structural consolidation of the Chinese domestic wet-clean supply chain, presenting a credible, well-capitalized domestic rival that could challenge ACM Research's pricing power in mature nodes over the coming years.
Geopolitics and The China WFE Capex Supercycle
The fundamental investment thesis for ACM Research is inextricably linked to the ongoing bifurcation of the global technology supply chain. The United States government's stringent export controls on advanced semiconductor manufacturing equipment have inadvertently catalyzed a domestic substitution supercycle in China. As Chinese foundries face the reality of being cut off from Western tooling, they are aggressively migrating their procurement to domestic suppliers like ACM Research to guarantee their capacity runway. This policy-driven demand allows the company to capture increasingly larger shares of domestic wafer fabrication equipment spending. With China aggressively building out capacity for mature node logic, memory, and localized artificial intelligence infrastructure, ACM Research is riding a massive, multi-year capital expenditure wave that structurally guarantees domestic demand.
However, this geopolitical windfall carries an equally massive existential risk. In December 2024, the United States Department of Commerce added ACM Research's primary operating subsidiary, ACM Shanghai, along with its Korean subsidiary, to the Entity List under a presumption of denial license review policy. While the parent company in Delaware remains unlisted, the inclusion of the Shanghai unit severely complicates the import of Western components and the activities of United States personnel within the company. This creates an acute regulatory tightrope, particularly given that the founder and Chief Executive Officer is a United States citizen. While the company has thus far managed to navigate these restrictions by diversifying its supply chain and relying heavily on its localized Chinese operations, the looming threat of further escalations, such as potential prohibitions on United States persons working for these entities, remains a profound structural overhang that heavily discounts the company's equity value relative to its mainland-listed subsidiary.
The Next Growth Frontiers: Advanced Packaging, PECVD, and Beyond
Recognizing the eventual saturation and competitive maturation of the wet-cleaning market, management is aggressively pivoting toward new product categories to expand its serviceable addressable market. The most successful of these adjacencies to date is electrochemical plating. Electrochemical plating is a metal deposition process used for copper interconnects, and it is seeing rapid adoption in both front-end processing and back-end advanced packaging applications. As the artificial intelligence boom drives relentless demand for High Bandwidth Memory and complex 3D packaging architectures, the company's advanced packaging revenue has surged. In the first quarter of 2026, revenue from advanced packaging services and spare parts grew 62 percent year-over-year, while the electrochemical plating category saw revenue multiply over three times compared to the prior year.
Beyond plating, ACM Research is systematically attacking other highly lucrative equipment markets historically dominated by Applied Materials and Tokyo Electron. The company is currently rolling out vertical furnace systems for thermal atomic layer deposition and oxidation, as well as new front-end track equipment for photoresist coating and developing. Most notably, in April 2026, the company shipped its first plasma-enhanced chemical vapor deposition system for advanced semiconductor applications. While these new product lines currently contribute marginally to the overall revenue mix, their successful qualification and volume production ramp over the next two years are critical to validating the company's ambition to become a comprehensive, multi-platform semiconductor equipment supplier rather than a niche wet-cleaning specialist.
Management Pedigree and Execution Realities
Chief Executive Officer David Wang has orchestrated an exceptionally complex and successful corporate strategy over the past decade. Under his leadership, ACM Research successfully bifurcated its corporate structure, listing the parent company on the Nasdaq in 2017 and subsequently taking the core operating subsidiary, ACM Shanghai, public on China's STAR Market in 2021. This dual-listing maneuver provided the company with deep access to Chinese capital markets, enabling a massive $632 million equity offering in September 2025 to fund aggressive capacity expansions. The financial results validate this execution. Revenue grew 15.2 percent in fiscal year 2025 to $901.3 million, and the first quarter of 2026 delivered $231.3 million in revenue, a 34.2 percent year-over-year increase. Management's 2026 full-year revenue guidance of $1.08 billion to $1.175 billion implies robust 21 to 30 percent growth, firmly establishing the company as a billion-dollar entity.
Despite the pristine top-line execution, profitability metrics reflect the intense cost of scaling a broader product portfolio. Gross margins, which printed at 46.5 percent in the first quarter of 2026, remain healthy and above the midpoint of management's 42 to 48 percent long-term target model. However, operating margins have experienced structural compression over the last year, dropping from historic highs in the low twenties to the mid-teens. This margin dilution is a direct consequence of the aggressive research and development spending required to bring furnaces, track systems, and chemical vapor deposition tools to market simultaneously, combined with intensified client validation costs. While management anticipates operating leverage to return as these new tools enter volume production, the near-term reality is that ACM Research is trading margin for market share and total addressable market expansion.
The Scorecard
ACM Research presents one of the most asymmetric fundamental setups in the global semiconductor equipment sector. On the operational front, the company is executing flawlessly against a massive domestic substitution mandate in China. Its proprietary wet-cleaning technologies are deeply entrenched in the fabrication facilities of China's most important logic and memory producers, and its aggressive expansion into electrochemical plating and advanced packaging positions it perfectly to capture the localized artificial intelligence infrastructure build-out. The financial trajectory is superb, with top-line growth consistently outpacing global wafer fabrication equipment trends, supported by a rock-solid balance sheet and accelerating market share capture against Western incumbents.
Conversely, the investment case is heavily constrained by severe geopolitical tail risks and emerging domestic competition. The December 2024 Entity List designation of its core Shanghai and Korean subsidiaries introduces perpetual friction regarding supply chain continuity and executive leadership compliance. Furthermore, the strategic consolidation of the domestic wet-clean market by Naura Technology Group signals that the era of uncontested market share gains in China may be peaking. Ultimately, ACM Research offers extraordinary fundamental growth at a severely depressed holding-company valuation, but unlocking that value requires investors to underwrite an incredibly opaque and volatile geopolitical regulatory regime.