OK Biotech CoTPE:4155 60 Operating Margin % is 6.03% as of Dec. 2025, which is 31% below its 10-year median of 8.72. GuruFocus rates TPE:4155 with a GF Score™ of 60/100 and a GF Value™ of NT$27.28 (Possible Value Trap). The stock has 7 warning signs investors should review. Among 816 Medical Devices & Instruments companies, OK Biotech Co ranks better than 60.42% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. OK Biotech Co's Operating Income for the
three
months ended in Dec. 2025 was NT$20 Mil. OK Biotech Co's Revenue for the
three
months ended in Dec. 2025 was NT$338 Mil. Therefore, OK Biotech Co's Operating Margin % for the quarter that ended in Dec. 2025 was 6.03%.
Warning Sign:
OK Biotech Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -3.8%.
The historical rank and industry rank for OK Biotech Co's Operating Margin % or its related term are showing as below:
TPE:4155'
s Operating Margin % Range Over the Past 10 Years
Min: 0.15 Med: 8.72 Max: 12.65
Current: 7.66
TPE:4155's Operating Margin % is ranked better than 60.42% of 816
companies
in the Medical Devices & Instruments industry
Industry Median: 3.465
vs TPE:4155: 7.66
OK Biotech Co's 5-Year Average Operating Margin % Growth Rate was -3.80% per year.
OK Biotech Co's Operating Income for the
three
months ended in Dec. 2025 was NT$20 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was NT$119 Mil.
Warning Sign:
OK Biotech Co Ltd has recorded a loss in operating income at least once over the past 3 years.
OK Biotech Co (TPE:4155) 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.
OK Biotech Co Operating Margin % Related Terms
OK Biotech Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for OK Biotech Co'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.
TPE:4155 vs ABT, SYK, MDT: Operating Margin % Comparison
For the Medical Devices subindustry, OK Biotech Co'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.
OK Biotech Co Operating Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, OK Biotech Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where OK Biotech Co'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.
OK Biotech Co'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.
OK Biotech Co (TPE:4155) has a Operating Margin % of 6.03% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on OK Biotech Co and its competitors. This is 31% below median its historical median of 8.72. Over the past decade, OK Biotech Co's Operating Margin % has ranged from 0.15 to 12.65. According to the industry distribution chart, OK Biotech Co ranks #323 out of 816 companies in the Medical Devices & Instruments industry, placing it in the top 39.6%.
Is OK Biotech Co's Operating Margin % too high?
OK Biotech Co's current Operating Margin % of 6.03% is 31% below median its 10-year median of 8.72. Over the past 10 years, this metric has ranged from a low of 0.15 to a high of 12.65. The Medical Devices & Instruments industry median Operating Margin % is 3.47. OK Biotech Co's value of 6.03% is 74% above this industry median. Based on the distribution chart, OK Biotech Co ranks #323 out of 816 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, OK Biotech Co has a GF Score™ of 60/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does OK Biotech Co's Operating Margin % compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, OK Biotech Co ranks #323 out of 816 companies for Operating Margin %. This puts OK Biotech Co in the upper half of its industry. The industry median Operating Margin % is 3.47. OK Biotech Co's value of 6.03% is 74% above this benchmark. Historically, OK Biotech Co's own Operating Margin % has ranged from 0.15 to 12.65 over the past decade. While the company's 10-year median is 8.72 vs. the industry median of 3.47, OK Biotech Co 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. OK Biotech Co's current Operating Margin % of 6.03% is 74% 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 OK Biotech Co 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. OK Biotech Co's current Operating Margin % is 6.03%, which is 31% below median its own 10-year median of 8.72. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is OK Biotech Co stock overvalued right now?
Based on GuruFocus' analysis, OK Biotech Co (TPE:4155) is currently considered Possible Value Trap. The stock's GF Value™ is NT$27.28, compared to a current price of NT$15.00 — trading 45% below its estimated fair value. The current Operating Margin % is 6.03%, which is 31% below median its 10-year median of 8.72 and 74% above the Medical Devices & Instruments industry median of 3.47. OK Biotech Co's overall GF Score™ is 60/100 with 7 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 OK Biotech Co (TPE:4155), the current Operating Margin % is 6.03% 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 OK Biotech Co (TPE:4155) Overvalued in 2026?
Based on GuruFocus' analysis, OK Biotech Co stock appears to be undervalued.
The current stock price of NT$15.00 is trading 45% below its estimated GF Value™ of NT$27.28.
GuruFocus considers OK Biotech Co to be Possible Value Trap.
Key valuation signals for TPE:4155:
Operating Margin %: 6.03% (31% below median its 10-year median of 8.72)
GF Value™: NT$27.28 vs. price of NT$15.00 (45% below fair value)
Industry Position: 74% above the Medical Devices & Instruments median (#323 of 816)
No single metric tells the full story. See the TPE:4155 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
OK Biotech Co Ltd is mainly engaged in the manufacturing, wholesale, and retail of electronic materials and medical equipment. Its product portfolio comprises blood glucose monitoring systems, OTC hearing aids, multi-frequency therapy devices, and others. Geographically, the company generates the majority of its revenue from America, and the rest from Asia (excluding Taiwan), Africa, Europe, and Taiwan.
60GF Score
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