KAINOS LaboratoriesTSE:4556 39 Operating Margin % is 12.00% as of Mar. 2026, which is 16% below its 10-year median of 14.25. GuruFocus rates TSE:4556 with a GF Score™ of 39/100 and a GF Value™ of 円1,281.99 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 813 Medical Devices & Instruments companies, KAINOS Laboratories ranks better than 75.4% on this metric.
KAINOS Laboratories Inc operating margin has been in a 5-year decline. The average rate of decline per year is -1.5%.
The historical rank and industry rank for KAINOS Laboratories's Operating Margin % or its related term are showing as below:
TSE:4556'
s Operating Margin % Range Over the Past 10 Years
Min: 10.1 Med: 14.25 Max: 17.11
Current: 13.64
TSE:4556's Operating Margin % is ranked better than 75.4% of 813
companies
in the Medical Devices & Instruments industry
Industry Median: 3.39
vs TSE:4556: 13.64
KAINOS Laboratories's 5-Year Average Operating Margin % Growth Rate was -1.50% per year.
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.
KAINOS Laboratories Operating Margin % Related Terms
KAINOS Laboratories Operating Margin % Historical Data
* Premium members only.
The historical data trend for KAINOS Laboratories'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.
TSE:4556 vs ISRG, BDX, MDLN: Operating Margin % Comparison
For the Medical Instruments & Supplies subindustry, KAINOS Laboratories'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.
KAINOS Laboratories Operating Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, KAINOS Laboratories's Operating Margin % distribution charts can be found below:
* The bar in red indicates where KAINOS Laboratories'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.
KAINOS Laboratories's Operating Margin % for the fiscal year that ended in Mar. 2026 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.
KAINOS Laboratories (TSE:4556) has a Operating Margin % of 12.00% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on KAINOS Laboratories and its competitors. This is 16% below median its historical median of 14.25. Over the past decade, KAINOS Laboratories' Operating Margin % has ranged from 10.10 to 17.11. According to the industry distribution chart, KAINOS Laboratories ranks #200 out of 813 companies in the Medical Devices & Instruments industry, placing it in the top 24.6%.
Is KAINOS Laboratories' Operating Margin % too high?
KAINOS Laboratories' current Operating Margin % of 12.00% is 16% below median its 10-year median of 14.25. Over the past 10 years, this metric has ranged from a low of 10.10 to a high of 17.11. The Medical Devices & Instruments industry median Operating Margin % is 3.39. KAINOS Laboratories' value of 12.00% is 254% above this industry median. Based on the distribution chart, KAINOS Laboratories ranks #200 out of 813 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, KAINOS Laboratories has a GF Score™ of 39/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does KAINOS Laboratories' Operating Margin % compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, KAINOS Laboratories ranks #200 out of 813 companies for Operating Margin %. This places KAINOS Laboratories in the top 25% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 3.39. KAINOS Laboratories' value of 12.00% is 254% above this benchmark. Historically, KAINOS Laboratories' own Operating Margin % has ranged from 10.10 to 17.11 over the past decade. While the company's 10-year median is 14.25 vs. the industry median of 3.39, KAINOS Laboratories 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 3.39, based on 813 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. KAINOS Laboratories's current Operating Margin % of 12.00% is 254% 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 KAINOS Laboratories and its competitors. For the Medical Devices & Instruments industry, the median Operating Margin % is 3.39 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. KAINOS Laboratories's current Operating Margin % is 12.00%, which is 16% below median its own 10-year median of 14.25. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is KAINOS Laboratories stock overvalued right now?
Based on GuruFocus' analysis, KAINOS Laboratories (TSE:4556) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,281.99, compared to a current price of 円2,268.00 — trading 76.9% above its estimated fair value. The current Operating Margin % is 12.00%, which is 16% below median its 10-year median of 14.25 and 254% above the Medical Devices & Instruments industry median of 3.39. KAINOS Laboratories' overall GF Score™ is 39/100 with 6 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 KAINOS Laboratories (TSE:4556), the current Operating Margin % is 12.00% 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 KAINOS Laboratories (TSE:4556) Overvalued in 2026?
Based on GuruFocus' analysis, KAINOS Laboratories stock appears to be overvalued.
The current stock price of 円2,268.00 is trading 76.9% above its estimated GF Value™ of 円1,281.99.
GuruFocus considers KAINOS Laboratories to be Significantly Overvalued.
Key valuation signals for TSE:4556:
Operating Margin %: 12.00% (16% below median its 10-year median of 14.25)
GF Value™: 円1,281.99 vs. price of 円2,268.00 (76.9% above fair value)
Industry Position: 254% above the Medical Devices & Instruments median (#200 of 813)
No single metric tells the full story. See the TSE:4556 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
KAINOS Laboratories Inc is focused on the development, manufacture, marketing, distribution, and import/export of pharmaceuticals, diagnostic reagents, and related chemical products. It also manufactures, sells, and exports/imports physicochemical measuring equipment for medical use.
39GF Score
Get the complete analysis for TSE:4556
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
TSE:4556 has been successfully added to your 
