What is Formosa Optical Technology Co Net Margin %?
Formosa Optical Technology CoROCO:5312 -0.66%81 Net Margin % is 5.64% as of Dec. 2025, which is 46% below its 10-year median of 10.37. GuruFocus rates ROCO:5312 with a GF Score™ of 81/100 and a GF Value™ of NT$108.45 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 818 Medical Devices & Instruments companies, Formosa Optical Technology Co ranks better than 71.64% on this metric.
The historical rank and industry rank for Formosa Optical Technology Co's Net Margin % or its related term are showing as below:
ROCO:5312'
s Net Margin % Range Over the Past 10 Years
Min: 5.16 Med: 10.37 Max: 13.35
Current: 9.33
ROCO:5312's Net Margin % is ranked better than 71.64% of 818
companies
in the Medical Devices & Instruments industry
Industry Median: 2.06
vs ROCO:5312: 9.33
Formosa Optical Technology Co (ROCO:5312) Net Margin % Explanation
Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.
But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.
Formosa Optical Technology Co Net Margin % Related Terms
Formosa Optical Technology Co Net 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.
ROCO:5312 vs ISRG, BDX, MDLN: Net Margin % Comparison
For the Medical Instruments & Supplies subindustry, Formosa Optical Technology Co's Net Margin %, along with its competitors' market caps and Net 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.
Formosa Optical Technology Co Net Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Formosa Optical Technology Co's Net Margin % distribution charts can be found below:
* The bar in red indicates where Formosa Optical Technology Co's Net Margin % falls into.
* 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.
Formosa Optical Technology Co (ROCO:5312) has a Net Margin % of 5.64% as of Dec. 2025. Net margin is the ratio of total net income to net sales. View historical data on Formosa Optical Technology Co and its competitors. This is 46% below median its historical median of 10.37. Over the past decade, Formosa Optical Technology Co's Net Margin % has ranged from 5.16 to 13.35. According to the industry distribution chart, Formosa Optical Technology Co ranks #232 out of 818 companies in the Medical Devices & Instruments industry, placing it in the top 28.4%.
Is Formosa Optical Technology Co's Net Margin % too high?
Formosa Optical Technology Co's current Net Margin % of 5.64% is 46% below median its 10-year median of 10.37. Over the past 10 years, this metric has ranged from a low of 5.16 to a high of 13.35. The Medical Devices & Instruments industry median Net Margin % is 2.06. Formosa Optical Technology Co's value of 5.64% is 173.8% above this industry median. Based on the distribution chart, Formosa Optical Technology Co ranks #232 out of 818 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, Formosa Optical Technology Co has a GF Score™ of 81/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Optical Technology Co's Net Margin % compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Formosa Optical Technology Co ranks #232 out of 818 companies for Net Margin %. This puts Formosa Optical Technology Co in the upper half of its industry. The industry median Net Margin % is 2.06. Formosa Optical Technology Co's value of 5.64% is 173.8% above this benchmark. Historically, Formosa Optical Technology Co's own Net Margin % has ranged from 5.16 to 13.35 over the past decade. While the company's 10-year median is 10.37 vs. the industry median of 2.06, Formosa Optical Technology 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 Net Margin % for a Medical Devices & Instruments company?
The median Net Margin % among Medical Devices & Instruments companies is 2.06, based on 818 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Formosa Optical Technology Co's current Net Margin % of 5.64% is 173.8% 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 Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on Formosa Optical Technology Co and its competitors. For the Medical Devices & Instruments industry, the median Net Margin % is 2.06 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Optical Technology Co's current Net Margin % is 5.64%, which is 46% below median its own 10-year median of 10.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Optical Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Formosa Optical Technology Co (ROCO:5312) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$108.45, compared to a current price of NT$89.70 — trading 17.3% below its estimated fair value. The current Net Margin % is 5.64%, which is 46% below median its 10-year median of 10.37 and 173.8% above the Medical Devices & Instruments industry median of 2.06. Formosa Optical Technology Co's overall GF Score™ is 81/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For Formosa Optical Technology Co (ROCO:5312), the current Net Margin % is 5.64% 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 Formosa Optical Technology Co (ROCO:5312) Overvalued in 2026?
Based on GuruFocus' analysis, Formosa Optical Technology Co stock appears to be undervalued.
The current stock price of NT$89.70 is trading 17.3% below its estimated GF Value™ of NT$108.45.
GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.
Key valuation signals for ROCO:5312:
Net Margin %: 5.64% (46% below median its 10-year median of 10.37)
GF Value™: NT$108.45 vs. price of NT$89.70 (17.3% below fair value)
Industry Position: 173.8% above the Medical Devices & Instruments median (#232 of 818)
No single metric tells the full story. See the ROCO:5312 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Formosa Optical Technology Co Business Description
Formosa Optical Technology Co Ltd is mainly engaged in the eyewear business, including optometry services and the retail business selling contact lenses and eye drops. The Group mainly derives revenue from the business divisions of Formosa Optical Technology and Bo Wei Optical, with Formosa Optical Technology generating maximum revenue. The majority of revenue is derived from the sale of glasses. The Group generates the majority of its revenue from Taiwan.
81GF Score
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