Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Comet Holding AGSTU:EZP1 -3.34%83 Operating Margin % is 6.34% as of Dec. 2025, which is 25% below its 10-year median of 8.49. GuruFocus rates STU:EZP1 with a GF Score™ of 83/100 and a GF Value™ of €278.44 (Modestly Overvalued). The stock has 5 warning signs investors should review. Among 2,474 Hardware companies, Comet Holding AG ranks better than 58.25% on this metric.
Comet Holding AG (STU:EZP1) 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.
Comet Holding AG Operating Margin % Related Terms
Comet Holding AG Operating Margin % Historical Data
* Premium members only.
The historical data trend for Comet Holding AG'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:EZP1 vs COHR, KEYS, GRMN: Operating Margin % Comparison
For the Scientific & Technical Instruments subindustry, Comet Holding AG'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.
Comet Holding AG Operating Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Comet Holding AG's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Comet Holding AG'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.
Comet Holding AG'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.
Comet Holding AG (STU:EZP1) has a Operating Margin % of 6.34% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Comet Holding AG and its competitors. This is 25% below median its historical median of 8.49. Over the past decade, Comet Holding AG's Operating Margin % has ranged from 5.37 to 16.88. According to the industry distribution chart, Comet Holding AG ranks #1033 out of 2474 companies in the Hardware industry, placing it in the top 41.8%.
Is Comet Holding AG's Operating Margin % too high?
Comet Holding AG's current Operating Margin % of 6.34% is 25% below median its 10-year median of 8.49. Over the past 10 years, this metric has ranged from a low of 5.37 to a high of 16.88. The Hardware industry median Operating Margin % is 3.87. Comet Holding AG's value of 6.34% is 63.8% above this industry median. Based on the distribution chart, Comet Holding AG ranks #1033 out of 2474 companies in the Hardware industry, which is above the industry midpoint. Overall, Comet Holding AG has a GF Score™ of 83/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Comet Holding AG's Operating Margin % compare to COHR and KEYS?
According to the Hardware industry distribution chart, Comet Holding AG ranks #1033 out of 2474 companies for Operating Margin %. This puts Comet Holding AG in the upper half of its industry. The industry median Operating Margin % is 3.87. Comet Holding AG's value of 6.34% is 63.8% above this benchmark. Historically, Comet Holding AG's own Operating Margin % has ranged from 5.37 to 16.88 over the past decade. While the company's 10-year median is 8.49 vs. the industry median of 3.87, Comet Holding AG 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 Hardware company?
The median Operating Margin % among Hardware companies is 3.87, based on 2,474 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. Comet Holding AG's current Operating Margin % of 6.34% is 63.8% 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 Comet Holding AG and its competitors. For the Hardware industry, the median Operating Margin % is 3.87 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Comet Holding AG's current Operating Margin % is 6.34%, which is 25% below median its own 10-year median of 8.49. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Comet Holding AG stock overvalued right now?
Based on GuruFocus' analysis, Comet Holding AG (STU:EZP1) is currently considered Modestly Overvalued. The stock's GF Value™ is €278.44, compared to a current price of €353.20 — trading 26.8% above its estimated fair value. The current Operating Margin % is 6.34%, which is 25% below median its 10-year median of 8.49 and 63.8% above the Hardware industry median of 3.87. Comet Holding AG's overall GF Score™ is 83/100 with 5 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 Comet Holding AG (STU:EZP1), the current Operating Margin % is 6.34% as of Dec. 2025. 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 Comet Holding AG (STU:EZP1) Overvalued in 2026?
Based on GuruFocus' analysis, Comet Holding AG stock appears to be overvalued.
The current stock price of €353.20 is trading 26.8% above its estimated GF Value™ of €278.44.
GuruFocus considers Comet Holding AG to be Modestly Overvalued.
Key valuation signals for STU:EZP1:
Operating Margin %: 6.34% (25% below median its 10-year median of 8.49)
GF Value™: €278.44 vs. price of €353.20 (26.8% above fair value)
Industry Position: 63.8% above the Hardware median (#1033 of 2474)
No single metric tells the full story. See the STU:EZP1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Comet Holding AG is a vendor of X-ray, radio frequency (RF) power, and e-beam technology. It markets its systems and services under the Comet, Yxlon, and ebeam brands. Yxlon x-ray systems for non-destructive testing are supplied to end customers in the automotive, aerospace, electronics, and energy sectors. Under the Comet brand, the group builds components and modules such as x-ray sources, vacuum capacitors, RF generators, and impedance matching networks, marketed to manufacturers in the automotive, aerospace, semiconductor, and solar industries, as well as the security sector. The Group has three operating divisions: Plasma Control Technologies (PCT), X-Ray Systems (IXS), and Industrial X-Ray Modules (IXM).
83GF Score
Get the complete analysis for STU:EZP1
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
STU:EZP1 has been successfully added to your 
