ACM Research (ACMR) Q1 2026 earnings review
Top-Line Surge Masks Core Segment Decline and EPS Leakage
ACM Research delivered a highly mixed Q1 2026. The headline numbers look fantastic: revenue accelerated to 34% YoY growth, and total shipments staged a massive 54% YoY recovery, reversing the weakness seen in late 2025. However, this growth did not reach ACMR shareholders. GAAP Net Income reversed course, falling 15% YoY, dragged down by an unexplained $9.3M non-operating expense and a doubled deduction for non-controlling interests. Even more concerning, ACM's foundational Single Wafer Cleaning segment actually shrank 5% YoY. The company is successfully diversifying into ECP and Advanced Packaging, but the leaky bottom line and declining core business limit enthusiasm.
🐂 Bull Case
Total shipments hit $240.7 million, up 54% YoY. This violently reverses the 12% decline seen in Q4 2025 and indicates strong demand conversion.
ECP and Furnace revenue exploded by 205% YoY to $84.2 million. This proves ACM's massive R&D investments are finally generating scale outside of traditional cleaning.
🐻 Bear Case
Revenue from Single Wafer Cleaning—historically ACM's bedrock—contracted 5% YoY to $122.5 million. Growth is entirely dependent on newer segments.
Operating Income grew 40%, but Net Income to ACMR shareholders fell 15%. Increased non-controlling interest deductions from selling off ACM Shanghai stakes mean public investors are getting a smaller slice of the profit pie.
⚖️ Verdict: ⚪
Neutral. The hyper-growth in ECP and Advanced Packaging is exactly what the bulls wanted to see. But you cannot ignore a shrinking core cleaning business and a corporate structure that is bleeding operating leverage away from the bottom line.
Key Themes
Core Segment Reversing Course
A specific data point completely contradicts management's narrative of universal strength: Single wafer cleaning, Tahoe, and semi-critical cleaning revenue reversed to a 5.5% YoY decline ($122.5M vs $129.6M). Just a year ago, this segment was over 75% of total revenue; today, it is 53%. While management previously boasted of targeting 60% market share in China cleaning, this contraction suggests they may be losing ground to the 'flood of local entrants' discussed in prior quarters.
ECP and Advanced Packaging are Accelerating
The successful diversification of revenue is ACM's biggest win this quarter. ECP and Furnace revenues skyrocketed 205% YoY to $84.2 million. Meanwhile, Advanced Packaging tools grew 62% YoY to $24.5 million. This validates the company's long-term R&D thesis and proves they can capture the AI-driven advanced packaging wave.
Severe Profitability Leakage
Operating Income grew a healthy 40% YoY to $36.2M. Yet, Net Income attributable to ACMR plunged 15% to $17.3M. This disconnect was driven by two black holes: a massive $9.3M 'Other expense, net' (compared to just $0.26M last year) and an 93% jump in net income attributed to non-controlling interests ($8.9M vs $4.6M). As ACMR sells off shares in its ACM Shanghai subsidiary, the parent company captures significantly less bottom-line profit.
Massive War Chest Fueling Global Expansion
ACM ended the quarter with an astronomical $1.25 billion in cash and short-term deposits, bolstered by selling 4.8 million shares of ACM Shanghai for $110 million. This balance sheet allows them to fund their aggressive Oregon facility ramp-up debt-free, mitigating the macro risk of US-China tariffs by creating localized capacity.
Macro Trade Policy Driving Corporate Restructuring
Management explicitly cited 'international trade policy' and 'supply chain constraints' as ongoing risks. In direct response, the company is moving forward with a proposed secondary listing of ACM Shanghai on the Hong Kong Stock Exchange. While this broadens their capital base internationally, investors must monitor how much further this will dilute ACMR's ownership stake.
Gross Margin Decelerating
GAAP Gross margin ticked down to 46.4% from 47.9% a year ago. While this remains safely within management's long-term target of 42-48%, the downward trajectory in a quarter where high-margin Advanced Packaging grew aggressively suggests intense pricing pressure in their core cleaning lines.
Other KPIs
Accelerating. Up 25.2% YoY. However, because revenue grew much faster (34.2%), operating expenses actually decreased as a percentage of revenue from 32.9% to 30.7%. This shows excellent core operational leverage, making the bottom-line net income drop even more frustrating for investors.
Reversing. Up 53.6% YoY, a massive recovery after full-year 2025 shipments declined 12.2%. This figure includes first tools awaiting acceptance, providing high visibility for continued revenue recognition in the coming quarters.
Guidance
Stable. The company maintained its previous full-year guidance. At the midpoint, this implies 25% YoY growth over FY2025's $901 million. This confirms the company expects the Q1 momentum to hold steady through the year, driven by new product cycles rather than a broader WFE market recovery.
Key Questions
Core Segment Contraction
Single Wafer Cleaning revenue fell 5% YoY this quarter. Is this decline a result of order timing, or are you seeing structural market share losses to the 'flood of local entrants' you referenced in 2025?
Unexplained Other Expenses
You recorded a $9.3 million 'Other expense, net' in Q1 that effectively destroyed GAAP EPS growth. What specifically drove this massive expense, and is it a one-time item or a recurring structural cost?
Hong Kong Listing Dilution
With the proposed secondary listing of ACM Shanghai on the Hong Kong Stock Exchange, what is the expected floor for ACMR's ownership percentage of this subsidiary, and how should investors model the ongoing increase in non-controlling interest deductions?