ACM Research, Inc. - Class A (ACMR)
How ACMR actually reacts to news — the realized, point-in-time move the market made, measured across 366 labeled events over the last three years with zero look-ahead.
ACMR’s median reaction, across the day.
Half of all ACM Research, Inc. - Class A news events land between -1.96% and +1.34% at 30 minutes.
Reaction stats as of 2026-08-18. Reaction = percent move vs. the price at the news timestamp.
Email me when ACMR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ACMR’s baseline. Nothing else.
Get “How ACMR reacts to news” as a PDF.
A free one-page summary: ACMR’s median reaction to news and the full breakdown by event type — the numbers on this page, in one page.
Recent ACMR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| ACM Research Expands Ultra C Tahoe into a Wet Processing Platform | Press release | GlobeNewswire | -8.93% | -7.91% | |
| ACM Research Reports Second Quarter 2026 Results | Press release | GlobeNewswire | -8.93% | -7.91% | |
| ACM Research’s Ultra ECP ap-p Horizontal Panel Electroplating Tool Receives First Production Order and Evaluation Order from Customers | Press release | GlobeNewswire | -8.93% | -7.91% | |
| Form 10-Q ACM Research, Inc. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -3.23% | — | |
| Form 8-K ACM Research, Inc. For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | -8.93% | -7.91% | |
| ACM Research to Release Second Quarter 2026 Financial Results on August 7, 2026 | Press release | GlobeNewswire | +0.93% | -3.00% | |
| Form 8-K ACM Research, Inc. For: Jun 18 | SEC filing · Form 8-K | SEC EDGAR | -1.90% | -7.10% | |
| Form 8-K ACM Research, Inc. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | -4.02% | -2.40% | |
| Form 8-K ACM Research, Inc. For: May 26 | SEC filing · Form 8-K | SEC EDGAR | +1.91% | -1.74% | |
| Form 8-K ACM Research, Inc. For: May 19 | SEC filing · Form 8-K | SEC EDGAR | -2.89% | +1.47% | |
| Form 8-K ACM Research, Inc. For: May 15 | SEC filing · Form 8-K | SEC EDGAR | -0.20% | -3.70% | |
| Form 8-K ACM Research, Inc. For: May 12 | SEC filing · Form 8-K | SEC EDGAR | -0.38% | +2.27% | |
| Form 10-Q ACM Research, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.08% | +4.98% | |
| ACM Research Reports First Quarter 2026 Results | Press release | GlobeNewswire | +13.21% | +11.70% | |
| Form 8-K ACM Research, Inc. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +13.21% | +11.70% | |
| ACM Research Announces Preliminary Unaudited Revenue and Shipments for the First Quarter 2026 | Press release | GlobeNewswire | +2.29% | -3.08% | |
| ACM Research Ships First PECVD SiCN System for Advanced Semiconductor Applications | Press release | GlobeNewswire | +2.29% | -3.08% | |
| Form 8-K ACM Research, Inc. For: Apr 27 | SEC filing · Form 8-K | SEC EDGAR | +2.29% | -3.08% | |
| Form DEF 14A ACM Research, Inc. For: Jun 10 | SEC filing · Form DEF | SEC EDGAR | +2.29% | -3.08% | |
| Kerrisdale and Steamboat Send Letter to ACM Research Inc. | Press release | PR Newswire | -0.29% | +3.87% | |
| Form 8-K ACM Research, Inc. For: Apr 17 | SEC filing · Form 8-K | SEC EDGAR | +4.26% | +1.65% | |
| ACM Research to Release First Quarter 2026 Preliminary Revenue Range on April 27, 2026 and Full Financial Results on May 7, 2026 | Press release | GlobeNewswire | -2.39% | -3.64% | |
| ACM Research Introduces ACM Planetary Family™ Product Portfolio Structure | Press release | GlobeNewswire | +0.17% | +1.34% | |
| Form 8-K ACM Research, Inc. For: Mar 24 | SEC filing · Form 8-K | SEC EDGAR | -0.36% | -2.04% | |
| Form 8-K ACM Research, Inc. For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | -1.74% | -5.49% | |
| Form S-8 ACM Research, Inc. | SEC filing · Form S-8 | SEC EDGAR | +0.04% | -1.97% | |
| Form 10-K ACM Research, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -3.45% | -4.40% | |
| ACM Research Delivers Multiple Single-Wafer Cleaning Systems to Foundry Customer in Singapore | Press release | GlobeNewswire | +1.82% | -8.74% | |
| ACM Research Receives Multiple Advanced Packaging Equipment Orders from Leading Global Customers | Press release | GlobeNewswire | +1.82% | -8.74% | |
| ACM Research Reports Fourth Quarter and Fiscal Year 2025 Results | Press release | GlobeNewswire | +1.82% | -8.74% | |
| Form 8-K ACM Research, Inc. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | +1.82% | -8.74% | |
| ACM Research to Release Fourth Quarter and Fiscal Year 2025 Financial Results on February 26, 2026 | Press release | GlobeNewswire | -0.06% | +0.57% | |
| Form 8-K ACM Research, Inc. For: Feb 06 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | +10.21% | |
| Form 8-K ACM Research, Inc. For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | -0.22% | +2.89% | |
| Form 8-K ACM Research, Inc. For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | +1.75% | -2.02% | |
| Form 8-K ACM Research, Inc. For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | +3.61% | +8.47% | |
| ACM Research Updates 2025 Revenue Outlook and Provides Initial Outlook for 2026 Revenue | Press release | GlobeNewswire | -0.51% | -6.05% | |
| Form 8-K ACM Research, Inc. For: Jan 22 | SEC filing · Form 8-K | SEC EDGAR | -0.51% | -6.05% | |
| ACM Research to Release Full-Year 2025 Preliminary Revenue Range and Initial 2026 Revenue Outlook on January 22, 2026 | Press release | GlobeNewswire | +3.54% | -3.20% | |
| ACM Research Announces Participation in 14th Annual NYC Summit | Press release | GlobeNewswire | +0.06% | -1.32% | |
| Form 8-K ACM Research, Inc. For: Nov 19 | SEC filing · Form 8-K | SEC EDGAR | +1.81% | +5.54% | |
| ACM Research Delivers Advanced Ultra Lith BK Photoresist Hardening Tool with Industry-Leading UV Curing and Temperature Uniformity | Press release | GlobeNewswire | +0.71% | +1.35% | |
| ACM Research Delivers First Horizontal Panel Electroplating Tool Strengthening Its Leadership in Fan-Out Panel-Level Packaging | Press release | GlobeNewswire | +1.27% | -0.13% | |
| Form 10-Q ACM Research, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.02% | +3.08% | |
| ACM Research Reports Third Quarter 2025 Results | Press release | GlobeNewswire | +1.15% | +1.93% | |
| Form 8-K ACM Research, Inc. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | +1.15% | +1.93% | |
| ACM Research Announces Preliminary Unaudited Revenue and Shipments for the Third Quarter 2025 | Press release | GlobeNewswire | +0.00% | +1.61% | |
| Form 8-K ACM Research, Inc. For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | -0.85% | |
| ACM Research to Release Third Quarter 2025 Financial Results on November 5, 2025 | Press release | GlobeNewswire | -0.13% | -1.27% | |
| ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Backlog Data | Press release | GlobeNewswire | -0.30% | -2.18% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ACMR section they belong to.
More of the dataset.
ACMR earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is ACM Research, Inc. - Class A's median reaction calculated?
Every labeled ACMR news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 366 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 43% of ACMR's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-08-18.
Does ACMR's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.