ACM Research Inc: Solid top-line growth with strong margin rebound

Core Conclusion

ACM Research’s 1Q26 results confirm a structurally improving margin profile while top-line growth remains on track. Revenue of $231mn (+34% YoY, in line with consensus) was accompanied by a sharp 5.9pp QoQ gross-margin rebound to 46.4%, driven by better product mix. Management reiterated 2026 revenue guidance of $1,080–1,175mn (+26% YoY at midpoint), underpinned by strong memory client capacity expansion. We maintain Overweight with a $68 price target (23% upside from $55.38).

What the Market May Be Underpricing

The gross margin recovery is not a one-off. The 5.9pp QoQ improvement reflects a product mix shift toward higher-margin single-wafer cleaning and PECVD tools, a trend that should persist as new products ramp. Additionally, the accelerating R&D timeline—PECVD and track equipment are now scheduled to ship within 2026, faster than originally expected—suggests a widening addressable market beyond wet cleaning. This medium-term revenue optionality is not fully discounted at the current P/E of 19.9x 2026E EPS.

Evidence Chain

• Top-line consistency: 1Q26 revenue of $231mn (down 5% Q/Q, up 34% Y/Y) matched Morgan Stanley and consensus estimates. Total shipments were $240.7mn, up 54% YoY, indicating strong underlying demand and a healthy backlog conversion.
• Gross margin inflection: GM reached 46.4%, up 5.9pp QoQ from 40.5% in 4Q25. The sequential improvement came entirely from better product mix, not price increases or one-off items.
• Profit quality: Net income to shareholders of $17.3mn rose 115% Q/Q but fell 15% YoY due to higher non-operating expenses (likely FX and R&D-related). Excluding these, operating profit trajectory remains positive.
• R&D acceleration: Management disclosed that the Lingang mini test line has enabled faster-than-expected progress on new products. PECVD and track equipment are on schedule to commence customer shipments by year-end 2026.
• Guidance intact: 2026 revenue guidance of $1,080–1,175mn implies 26% YoY growth at midpoint. The strong memory-client expansion in China provides a multi-year demand backbone.

Key Divergences and Risks

The primary divergence is on margin sustainability. Consensus may still price in a contraction after the rebound, while we see product mix continuing to improve as high-margin single-wafer tools become a larger share of revenue. On the downside, risks include:

• China capacity slowdown: If memory client capex decelerates faster than expected, ACMR could miss shipment targets.
• Global semiconductor demand deceleration: Any cyclical downturn would reduce equipment spending, particularly in mature nodes where ACMR is exposed.
• Non-operating expense volatility: Higher R&D and foreign-exchange costs compressed net income in 1Q26; this trend could persist if R&D spending outpaces revenue growth.

Valuation and Trading Implications

We value ACMR using a residual income model with WACC of 10.1% (beta 1.35, risk-free rate 2%, equity risk premium 6%), medium-term growth of 11% (raised from 9%), and terminal growth of 4%. The $68 price target implies 23% upside from current levels. At 19.9x 2026E P/E and 11.0x EV/EBITDA, the stock trades at a discount to its China semiconductor equipment peers, reflecting the China-exposure discount but not the R&D acceleration catalyst. The 2026E FCF yield of 18% provides downside protection.

Appendix: Key Financial Data