ACM ResearchSTU:813 +5.78%81 Operating Margin % is 15.64% as of Mar. 2026, which is 9% above its 10-year median of 14.31. GuruFocus rates STU:813 with a GF Score™ of 81/100 and a GF Value™ of €29.87 (Significantly Overvalued). The stock has 10 warning signs investors should review. Among 1,023 Semiconductors companies, ACM Research ranks better than 68.33% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. ACM Research's Operating Income for the
three
months ended in Mar. 2026 was €31.3 Mil. ACM Research's Revenue for the
three
months ended in Mar. 2026 was €200.0 Mil. Therefore, ACM Research's Operating Margin % for the quarter that ended in Mar. 2026 was 15.64%.
Good Sign:
ACM Research Inc operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for ACM Research's Operating Margin % or its related term are showing as below:
STU:813'
s Operating Margin % Range Over the Past 10 Years
Min: 1.92 Med: 14.31 Max: 19.31
Current: 12.48
STU:813's Operating Margin % is ranked better than 68.33% of 1023
companies
in the Semiconductors industry
Industry Median: 5.24
vs STU:813: 12.48
ACM Research's 5-Year Average Operating Margin % Growth Rate was 0.80% per year.
ACM Research's Operating Income for the
three
months ended in Mar. 2026 was €31.3 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was €103.1 Mil.
ACM Research (STU:813) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
ACM Research Operating Margin % Related Terms
ACM Research Operating Margin % Historical Data
* Premium members only.
The historical data trend for ACM Research's Operating Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
STU:813 vs KLIC, AXTI, IPGP: Operating Margin % Comparison
For the Semiconductor Equipment & Materials subindustry, ACM Research's Operating Margin %, along with its competitors' market caps and Operating Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
ACM Research Operating Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, ACM Research's Operating Margin % distribution charts can be found below:
* The bar in red indicates where ACM Research's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
ACM Research's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
ACM Research (STU:813) has a Operating Margin % of 15.64% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on ACM Research and its competitors. This is near median its historical median of 14.31. Over the past decade, ACM Research's Operating Margin % has ranged from 1.92 to 19.31. According to the industry distribution chart, ACM Research ranks #324 out of 1023 companies in the Semiconductors industry, placing it in the top 31.7%.
Is ACM Research's Operating Margin % too high?
ACM Research's current Operating Margin % of 15.64% is near median its 10-year median of 14.31. Over the past 10 years, this metric has ranged from a low of 1.92 to a high of 19.31. The Semiconductors industry median Operating Margin % is 5.24. ACM Research's value of 15.64% is 198.5% above this industry median. Based on the distribution chart, ACM Research ranks #324 out of 1023 companies in the Semiconductors industry, which is above the industry midpoint. Overall, ACM Research has a GF Score™ of 81/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does ACM Research's Operating Margin % compare to KLIC and AXTI?
According to the Semiconductors industry distribution chart, ACM Research ranks #324 out of 1023 companies for Operating Margin %. This puts ACM Research in the upper half of its industry. The industry median Operating Margin % is 5.24. ACM Research's value of 15.64% is 198.5% above this benchmark. Historically, ACM Research's own Operating Margin % has ranged from 1.92 to 19.31 over the past decade. While the company's 10-year median is 14.31 vs. the industry median of 5.24, ACM Research has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for a Semiconductors company?
The median Operating Margin % among Semiconductors companies is 5.24, based on 1,023 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. ACM Research's current Operating Margin % of 15.64% is 198.5% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on ACM Research and its competitors. For the Semiconductors industry, the median Operating Margin % is 5.24 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ACM Research's current Operating Margin % is 15.64%, which is near median its own 10-year median of 14.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ACM Research stock overvalued right now?
Based on GuruFocus' analysis, ACM Research (STU:813) is currently considered Significantly Overvalued. The stock's GF Value™ is €29.87, compared to a current price of €93.40 — trading 212.7% above its estimated fair value. The current Operating Margin % is 15.64%, which is near median its 10-year median of 14.31 and 198.5% above the Semiconductors industry median of 5.24. ACM Research's overall GF Score™ is 81/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For ACM Research (STU:813), the current Operating Margin % is 15.64% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is ACM Research (STU:813) Overvalued in 2026?
Based on GuruFocus' analysis, ACM Research stock appears to be overvalued.
The current stock price of €93.40 is trading 212.7% above its estimated GF Value™ of €29.87.
GuruFocus considers ACM Research to be Significantly Overvalued.
Key valuation signals for STU:813:
Operating Margin %: 15.64% (near median its 10-year median of 14.31)
GF Value™: €29.87 vs. price of €93.40 (212.7% above fair value)
Industry Position: 198.5% above the Semiconductors median (#324 of 1023)
No single metric tells the full story. See the STU:813 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
ACM Research Inc supplies capital equipment developed for the semiconductor industry. The company focuses on developing differentiated process solutions that enable effective particle removal, uniform material deposition, and reliable process control for the fabricators of integrated circuits. Its product offerings include wet-cleaning, plating, furnace, PECVD, track, and other front-end processing equipment. Additionally, it develops, manufactures, and sells a range of packaging equipment to wafer assembly and packaging customers. Geographically, the company generates maximum revenue from its customers in Mainland China, and the rest from other regions.
81GF Score
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