The historical rank and industry rank for Formosa Optical Technology Co's ROE % or its related term are showing as below:
ROCO:5312'
s ROE % Range Over the Past 10 Years
Min: 6.5 Med: 12.64 Max: 15.8
Current: 11.12
During the past 13 years, Formosa Optical Technology Co's highest ROE % was 15.80%. The lowest was 6.50%. And the median was 12.64%.
ROCO:5312's ROE % is ranked better than 77.67% of 797
companies
in the Medical Devices & Instruments industry
Industry Median: 2.4
vs ROCO:5312: 11.12
Formosa Optical Technology Co (ROCO:5312) ROE % Explanation
ROE % measures the rate of return on the ownership interest (shareholder's equity) of the common stock owners. It measures a firm's efficiency at generating profits from every unit of shareholders' equity (also known as net assets or assets minus liabilities). ROE % shows how well a company uses investment funds to generate earnings growth. ROE %s between 15% and 20% are considered desirable.
The factors that affect a company's ROE % can be illustrated with the three-step DuPont Analysis:
Note:
The net income data used here is four times the quarterly (Dec. 2025) net income data. The Revenue data used here is four times the quarterly (Dec. 2025) revenue data. The same rule applies to Pre-Tax Income and Operating Income.
* In the five-step DuPont Analysis, Operating Income is only available for non-financial companies. Thus, for Insurance companies, we use EBIT as a substitution of Operating Income. For Banks, both Operating Income and EBIT is unavailable. Thus we combined Interest Burden and Operating Margin % into Pretax Margin %, and the DuPont Analysis is divided into four components instead.
* 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.
Be Aware
Net Income is used.
Because a company can increase its ROE % by having more financial leverage, it is important to watch the equity multiplier when investing in high ROE % companies. Like ROA %, ROE % is calculated with only 12 months data. Fluctuations in company's earnings or business cycles can affect the ratio drastically. It is important to look at the ratio from a long term perspective.
Asset light businesses require very few assets to generate very high earnings. Their ROE %s can be extremely high.
Formosa Optical Technology Co ROE % Related Terms
Formosa Optical Technology Co ROE % 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.
For the Medical Instruments & Supplies subindustry, Formosa Optical Technology Co's ROE %, along with its competitors' market caps and ROE % 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 ROE % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Formosa Optical Technology Co's ROE % distribution charts can be found below:
* The bar in red indicates where Formosa Optical Technology Co's ROE % 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.
In the calculation of annual ROE %, the net income of the last fiscal year and the average total shareholder equity over the fiscal year are used. In calculating the quarterly data,
the net income data used here is four times the quarterly (Dec. 2025) net income data.
ROE % is displayed in the 30-year financial page.
Formosa Optical Technology Co (ROCO:5312) has a ROE % of 7.05% as of Dec. 2025. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Formosa Optical Technology Co and its competitors. This is 44% below median its historical median of 12.64. Over the past decade, Formosa Optical Technology Co's ROE % has ranged from 6.50 to 15.80. According to the industry distribution chart, Formosa Optical Technology Co ranks #178 out of 797 companies in the Medical Devices & Instruments industry, placing it in the top 22.3%.
Is Formosa Optical Technology Co's ROE % too high?
Formosa Optical Technology Co's current ROE % of 7.05% is 44% below median its 10-year median of 12.64. Over the past 10 years, this metric has ranged from a low of 6.50 to a high of 15.80. The Medical Devices & Instruments industry median ROE % is 2.40. Formosa Optical Technology Co's value of 7.05% is 193.8% above this industry median. Based on the distribution chart, Formosa Optical Technology Co ranks #178 out of 797 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, Formosa Optical Technology Co has a GF Score™ of 82/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Optical Technology Co's ROE % compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Formosa Optical Technology Co ranks #178 out of 797 companies for ROE %. This places Formosa Optical Technology Co in the top 22% of its industry — outperforming the majority of peers. The industry median ROE % is 2.40. Formosa Optical Technology Co's value of 7.05% is 193.8% above this benchmark. Historically, Formosa Optical Technology Co's own ROE % has ranged from 6.50 to 15.80 over the past decade. While the company's 10-year median is 12.64 vs. the industry median of 2.40, 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 ROE % for a Medical Devices & Instruments company?
The median ROE % among Medical Devices & Instruments companies is 2.40, based on 797 companies in the industry. Companies in the top quartile (top 25%) have a ROE % significantly above this median, while those in the bottom quartile fall well below. However, ROE % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Formosa Optical Technology Co's current ROE % of 7.05% is 193.8% 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 ROE % mean?
A high ROE % can signal that a stock is expensive relative to its fundamentals. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Formosa Optical Technology Co and its competitors. For the Medical Devices & Instruments industry, the median ROE % is 2.40 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Optical Technology Co's current ROE % is 7.05%, which is 44% below median its own 10-year median of 12.64. 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$108.56, compared to a current price of NT$88.10 — trading 18.8% below its estimated fair value. The current ROE % is 7.05%, which is 44% below median its 10-year median of 12.64 and 193.8% above the Medical Devices & Instruments industry median of 2.40. Formosa Optical Technology Co's overall GF Score™ is 82/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROE % calculated?
ROE % is calculated from a company's financial statements. For Formosa Optical Technology Co (ROCO:5312), the current ROE % is 7.05% 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$88.10 is trading 18.8% below its estimated GF Value™ of NT$108.56.
GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.
Key valuation signals for ROCO:5312:
ROE %: 7.05% (44% below median its 10-year median of 12.64)
GF Value™: NT$108.56 vs. price of NT$88.10 (18.8% below fair value)
Industry Position: 193.8% above the Medical Devices & Instruments median (#178 of 797)
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.
82GF Score
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