EKF Diagnostics HoldingsLSE:EKF +4.69%54 Operating Margin % is 12.89% as of Dec. 2025, which is 1% above its 10-year median of 12.70. GuruFocus rates LSE:EKF with a GF Score™ of 54/100 and a GF Value™ of £0.28 (Fairly Valued). The stock has 4 warning signs investors should review. Among 816 Medical Devices & Instruments companies, EKF Diagnostics Holdings ranks better than 75.12% on this metric.
EKF Diagnostics Holdings PLC operating margin has been in a 5-year decline. The average rate of decline per year is -11.8%.
The historical rank and industry rank for EKF Diagnostics Holdings's Operating Margin % or its related term are showing as below:
LSE:EKF'
s Operating Margin % Range Over the Past 10 Years
Min: -0.85 Med: 12.7 Max: 28.67
Current: 13.53
LSE:EKF's Operating Margin % is ranked better than 75.12% of 816
companies
in the Medical Devices & Instruments industry
Industry Median: 3.465
vs LSE:EKF: 13.53
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.
EKF Diagnostics Holdings Operating Margin % Related Terms
EKF Diagnostics Holdings Operating Margin % Historical Data
* 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.
LSE:EKF vs ABT, SYK, MDT: Operating Margin % Comparison
For the Medical Devices subindustry, EKF Diagnostics Holdings'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.
EKF Diagnostics Holdings Operating Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, EKF Diagnostics Holdings's Operating Margin % distribution charts can be found below:
* The bar in red indicates where EKF Diagnostics Holdings'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.
EKF Diagnostics Holdings'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.
EKF Diagnostics Holdings (LSE:EKF) has a Operating Margin % of 12.89% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on EKF Diagnostics Holdings and its competitors. This is near median its historical median of 12.70. According to the industry distribution chart, EKF Diagnostics Holdings ranks #203 out of 816 companies in the Medical Devices & Instruments industry, placing it in the top 24.9%.
Is EKF Diagnostics Holdings' Operating Margin % too high?
EKF Diagnostics Holdings' current Operating Margin % of 12.89% is near median its 10-year median of 12.70. The Medical Devices & Instruments industry median Operating Margin % is 3.47. EKF Diagnostics Holdings' value of 12.89% is 272% above this industry median. Based on the distribution chart, EKF Diagnostics Holdings ranks #203 out of 816 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, EKF Diagnostics Holdings has a GF Score™ of 54/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does EKF Diagnostics Holdings' Operating Margin % compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, EKF Diagnostics Holdings ranks #203 out of 816 companies for Operating Margin %. This places EKF Diagnostics Holdings in the top 25% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 3.47. EKF Diagnostics Holdings' value of 12.89% is 272% above this benchmark. While the company's 10-year median is 12.70 vs. the industry median of 3.47, EKF Diagnostics Holdings 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 Medical Devices & Instruments company?
The median Operating Margin % among Medical Devices & Instruments companies is 3.47, based on 816 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. EKF Diagnostics Holdings's current Operating Margin % of 12.89% is 272% 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 EKF Diagnostics Holdings and its competitors. For the Medical Devices & Instruments industry, the median Operating Margin % is 3.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. EKF Diagnostics Holdings's current Operating Margin % is 12.89%, which is near median its own 10-year median of 12.70. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is EKF Diagnostics Holdings stock overvalued right now?
Based on GuruFocus' analysis, EKF Diagnostics Holdings (LSE:EKF) is currently considered Fairly Valued. The stock's GF Value™ is £0.28, compared to a current price of £0.27 — trading 4.3% below its estimated fair value. The current Operating Margin % is 12.89%, which is near median its 10-year median of 12.70 and 272% above the Medical Devices & Instruments industry median of 3.47. EKF Diagnostics Holdings' overall GF Score™ is 54/100 with 4 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 EKF Diagnostics Holdings (LSE:EKF), the current Operating Margin % is 12.89% 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 EKF Diagnostics Holdings (LSE:EKF) Overvalued in 2026?
Based on GuruFocus' analysis, EKF Diagnostics Holdings stock appears to be undervalued.
The current stock price of £0.27 is trading 4.3% below its estimated GF Value™ of £0.28.
GuruFocus considers EKF Diagnostics Holdings to be Fairly Valued.
Key valuation signals for LSE:EKF:
Operating Margin %: 12.89% (near median its 10-year median of 12.70)
GF Value™: £0.28 vs. price of £0.27 (4.3% below fair value)
Industry Position: 272% above the Medical Devices & Instruments median (#203 of 816)
No single metric tells the full story. See the LSE:EKF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
EKF Diagnostics Holdings PLC is engaged in development, manufacture and supply of products and services into the in-vitro diagnostic (IVD) market place. The Group has presence in the UK, USA, Germany, and Russia, and sells throughout the world including Europe, the Middle East, the Americas, Asia, and Africa. It derive their revenue from the manufacture and sale of medical diagnostic equipment and reagents. Other services include the servicing and distribution of third party company products under separate distribution agreements.
54GF Score
Get the complete analysis for LSE:EKF
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
LSE:EKF has been successfully added to your 
