Key Highlights

  • ACM Research (NASDAQ:ACMR) was quoted at USD 49.00 in premarket trading on November 5, 2026, up 10.29% on the premarket quote.
  • Preliminary third quarter Revenue was USD 360 million to USD 365 million, up 34% to 36% year on year, released October 28, 2026.
  • Preliminary total shipments were USD 335 million to USD 340 million, up 27% to 29%, below the revenue range.
  • Full year 2026 revenue guidance was raised on August 7, 2026 to USD 1.125 billion to USD 1.175 billion.

Preliminary Third Quarter Numbers and the Earnings Call

ACM Research (NASDAQ:ACMR) pre-announced unaudited third quarter 2026 results on October 28, 2026: revenue of USD 360 million to USD 365 million, up 34% to 36% from USD 269.2 million a year earlier, and total shipments of USD 335 million to USD 340 million, up 27% to 29%. The company said total shipments include deliveries for revenue in the quarter and first tool deliveries awaiting customer acceptance. The figures remain subject to quarter-end close and review by the independent auditor. Full results and the outlook are due on a conference call on November 5, 2026 at 8 a.m. ET. In premarket trading that day, per the premarket quote, the shares were at USD 49.00, up 10.29%, implying a prior close of about USD 44.43, simple arithmetic on the quote.

Growth Trend, Guidance and the Shanghai Subsidiary

The preliminary range extends a strong run. Second quarter revenue was USD 292.9 million, up 36.0%, and shipments were USD 281.5 million, up 36.4%. On August 7, 2026 the company raised its full year 2026 revenue guidance to USD 1.125 billion to USD 1.175 billion from USD 1.08 billion to USD 1.175 billion. Shipments grew more slowly than revenue in the third quarter: the midpoints are USD 337.5 million and USD 362.5 million, a gap of USD 25 million, simple arithmetic on the ranges. That suggests revenue is converting backlog, which matters because lower shipments can cap next quarter's revenue. Published coverage of the Shanghai-listed subsidiary, ACM Research (Shanghai), dated October 27, 2026 and reported under Chinese accounting rules, showed third quarter revenue of RMB 2.02 billion, up 7.59%, but net profit attributable to shareholders of RMB 81.5 million, down 85.70%, which the Subsidiary tied mainly to lower Fair Value gains on external investments. Those figures are in a different currency and standard from the parent's consolidated results and are single-source.

Risks and What to Watch Next

The parent's call will show whether revenue growth reached the preliminary range in profit terms, including gross Margin and operating income, which were not part of the October 28, 2026 announcement. Risks include the gap between shipments and revenue, customer concentration in China, export control exposure, and dependence on the Shanghai subsidiary for most consolidated results. Net profit at the subsidiary fell sharply, and nine month Operating Cash Flow there was negative RMB 270.4 million according to the same coverage, linked by the company to order-driven raw material purchasing. Premarket moves can reverse once the session opens and the call is digested. Watch fourth quarter guidance, any change to the USD 1.125 billion to USD 1.175 billion range and the shipment to revenue trend.

Where Things Stand

ACM Research (NASDAQ:ACMR) is up 10.29% premarket because preliminary third quarter revenue of USD 360 million to USD 365 million, up 34% to 36%, points to accelerating growth, and the market is positioning ahead of the 8 a.m. ET call on November 5, 2026. The case is strong on top line, yet profit, margin and the lower shipment range are still to be confirmed, and the Shanghai subsidiary posted a steep profit decline under local accounting. The call and the full year revenue range of USD 1.125 billion to USD 1.175 billion are the next tests.