ACM Research, Inc. (ACMR) shares tumbled 10.2% to $49.12 as of October 23, 2026, a sharp decline from the prior close of $54.69. BestStocks flagged the session as a major change for ACMR. The move is tied to company news. Below, we break down what changed for ACMR, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
What happened
Company News
ACMR tumbled 10.2% in its latest session, moving from $54.69 to $49.12.
NewsMedium confidence
Rel. volume
1.1×
Normal
Vs peers
—
No comparable peers
Market cap
$3.2B
NASDAQ Global Market
Analyst target
$113
+130.5% vs price
Price chart
Sep 22 – Oct 23
E earnings
F filing
A analyst
V/N other
click a marker to highlight
Change events — click to jump to details
What it means for ACM Research, Inc. investors
For ACM Research, Inc. investors, the recent signals add up to a strong bearish shift. On the constructive side: ACM Research rallied +6.06% to $73.63, driven by continued momentum following a strong Q2 earnings beat ($0.61 EPS vs. $0.42 consensus) and raised full-year revenue guidance, per web sources citing accelerating orders and surging advanced technology revenue; ACM Research, Inc. (ACMR) moved +15.45% from $82.52 to $95.27 on 2026-07-21. Weighing against that: Material negative event; Sharp 10.2% decline — elevated risk. Wall Street's consensus price target sits at $113.20, implying +130.5% upside from $49.12. BestStocks rates the overall signal quality medium (60/100). With earnings roughly 13 days out, the next report is the most likely near-term test of the move.
ACMR price reaction
ACMR last traded at $49.12, down $5.57 (-10.18%) from the previous close of $54.69. The session traded on 1.1× average volume (normal), so participation was unremarkable. Over the past month the stock has ranged between $49.12 and $83.58, and it currently sits about 0% of the way up that band.
Bullish and bearish analyst opinions on ACM Research, Inc. (ACMR)
The consensus analyst price target on ACM Research, Inc. (ACMR) is $113.20, 130.5% above the recent $49.12. Here is how the bullish and bearish cases on ACMR line up.
▲ The bullish case
+Wall Street's consensus price target of $113.20 implies +130.5% upside from $49.12.
+The Street's most bullish target is $136.00 (+176.9%).
+ACM Research rallied +6.06% to $73.63, driven by continued momentum following a strong Q2 earnings beat ($0.61 EPS vs. $0.42 consensus) and raised full-year revenue guidance, per web sources citing accelerating orders and surging advanced technology revenue.
+ACM Research, Inc. (ACMR) moved +15.45% from $82.52 to $95.27 on 2026-07-21.
▼ The bearish case
−Material negative event.
−Sharp 10.2% decline — elevated risk.
−ACM Research, Inc. moved -6.11% intraday from $80.67 to $75.74.
−ACM Research fell 8.38% to $84.25 in intraday trading despite a broader market uptick, according to Zacks.
−ACMR fell 11.47% intraday to $102.77, extending a decline that began yesterday when the stock closed down 7.67% at $117.16.
Bull vs bear balanceStrong Bearish Shift
BearishNeutralBullish
Weighing both sides, BestStocks' composite read of recent signals is strongly bearish, as the bull-versus-bear meter above shows. This is an educational summary of the bull and bear case, not investment advice.
Analyst price targets and ratings are FMP consensus figures as of Oct 23, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
ACM Research, Inc. moved +7.18% intraday from $53.10 to $56.91. Shares of ACM Research (NASDAQ: ACMR) are up over 7.5% on October 19, 2026, bouncing back from a sharp multi-day sell-off in the semiconductor and chip equipment sector.The positive movement is driven by: - Sector-Wide Relief Rally: Following heavy declines across chipmakers and semiconductor equipment stocks over the previous week—where ACMR slipped to a low near $53—investors are rotating back into hardware and wafer-cleaning equipment names. - Peer Momentum: Other semiconductor support and capital equipment stocks are also trading higher, lifting the broader tech and equipment group. - Bargain Hunting / Oversold Rebound: After pulling back sharply from earlier highs and trading at compressed forward price-to-sales multiples compared to larger peers like Applied Materials and Lam Research, buyers have stepped in to take advantage of lower entry points. Would you like to review ACMR's recent quarterly earnings numbers or see how its valuation and analyst price targets compare right now?
Material / Earnings2026-10-16-8.6%
ACM Research, Inc. (ACMR) moved -7.45% from $57.38 to $53.10 on 2026-10-16. No company-specific catalyst was found. The decline occurred amid a broader semiconductor equipment sector sell-off driven by macro caution and profit-taking after ACMR hit a 52-week high of $127.19 in June 2026. The stock's high beta amplified losses during the risk-off environment.
ACM Research fell 6.75% to $77.75 intraday, though the provided evidence does not identify a specific catalyst for today's move. Volume of 617,007 shares is normal for this time of session. A SEC filing and Yahoo Finance coverage are cited as sources by Google's AI Overview, but the linked documents do not detail a concrete event driving the decline.
ACM Research rose 3.62% to $83.85 following a material event filing (8-K) submitted today, per SEC records. The gain occurred on above-average volume (1.99x normal for this time of session), suggesting institutional interest in the disclosed event.
ACM Research rose 6.31% to $80.38, driven by upward momentum from recent backlog data releases from its Shanghai subsidiary combined with continued semiconductor and AI-driven demand tailwinds (web_catalyst). Volume of 839,654 shares ran 1.14x normal for this time of session. The move extends recent strength following earlier raised 2026 revenue outlooks and solid Q2 earnings.
News2026-09-30+7.0%
ACM Research management will participate in the 18th Annual CEO Investor Summit 2026.
ACM Research, Inc. moved -6.11% intraday from $80.67 to $75.74. ACM Research (ACMR) stock is down roughly 6% today due to a broader risk-off selloff hitting high-beta growth and semiconductor equipment stocks, following a sharp 24% rally over the past week. There are no company-specific negative catalysts or downgrades triggering the decline. Instead, the pullback is driven by macro sector factors and natural profit-taking. ## ACM Research Inc (ACMR) $75.78 -6.07% today As of Sep 24, 1:32 PM EDT • Disclaimer 10:00 AM 11:00 AM 12:00 PM 1:00 PM 76 78 80 Prev close $80.67 Sep 24, 2026 9:30 AM - 1:32 PM 1D 5D 1M 6M YTD 1Y 5Y Max| Open 78.10 | Mkt cap $5.28B USD | 52-wk high 127.19 | | High 78.62 | P/E ratio 35.54 | 52-wk low 28.47 | | Low 74.14 | Div yield- | --- ### 📉 Key Drivers of the Decline - Broad Semiconductor & Tech Weakness: High-beta growth names are bearing the brunt of a wider market slowdown, with the Nasdaq down about 0.5%. ACMR traditionally amplifies market movements in both directions due to its high volatility profile. - Profit Taking After a Massive Week: Before today's pullback, ACMR shares had jumped over 24% in the last 7 days alone, fueled by intense investor debate over its extensive exposure to China's semiconductor market
Material / Earnings2026-09-23+6.4%
ACMR moved +7.57% from its $74.99 open to a $80.67 close on 2026-09-23.
In-depth ACMR event analyses
Permanent, dated analyses of ACMR's most significant sessions.
ACMR tumbled 10.2% to $49.12. No single company-specific catalyst was confirmed during the move window, and it looks technical.
How much did ACMR stock fall?
ACMR lost 10.18% ($5.57) versus the prior close of $54.69, last trading at $49.12 on 1.1× average volume.
When is ACM Research, Inc.'s next earnings date?
ACMR's next earnings report is estimated for 2026-11-05 — about 13 days away.
What is the analyst price target for ACMR?
The consensus analyst price target for ACMR is $113.20, about 130.5% above the current $49.12. Over the past 90 days, analysts recorded 0 upgrades, 0 maintains, and 0 downgrades.
How BestStocks tracks ACMR
This page is generated automatically by BestStocks' change-detection system after company news was detected and verified against independent data sources. It draws on 20 tracked change events for ACMR, cross-checked against the data sources listed below. Price, volume, and market-capitalization figures are the live intraday quote as of October 23, 2026 and refresh as new information is detected; for companies with multiple share classes, market-cap figures can differ by data source. Analyst price targets and ratings are FMP consensus. This is an educational summary of what changed and why — not personalized investment advice.
