Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Formosa Optical Technology CoROCO:5312 -1.33%81 EV-to-FCF is 9.20 as of Jul. 18, 2026, which is 22% below its 10-year median of 11.85. GuruFocus rates ROCO:5312 with a GF Score™ of 81/100 and a GF Value™ of NT$108.94 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 414 Medical Devices & Instruments companies, Formosa Optical Technology Co ranks better than 83.82% on this metric.
The historical rank and industry rank for Formosa Optical Technology Co's EV-to-FCF or its related term are showing as below:
ROCO:5312'
s EV-to-FCF Range Over the Past 10 Years
Min: -12.4 Med: 11.85 Max: 26.13
Current: 9.19
During the past 13 years, the highest EV-to-FCF of Formosa Optical Technology Co was 26.13. The lowest was -12.40. And the median was 11.85.
ROCO:5312's EV-to-FCF is ranked better than 83.82% of 414
companies
in the Medical Devices & Instruments industry
Industry Median: 23.635
vs ROCO:5312: 9.19
EV-to-FCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
Formosa Optical Technology Co (ROCO:5312) EV-to-FCF Explanation
EV-to-FCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
Formosa Optical Technology Co's PE Ratio (TTM) for today is calculated as:
Formosa Optical Technology Co's share price for today is NT$88.80.
Formosa Optical Technology Co's Earnings per Share (Diluted) for the trailing twelve months (TTM) ended in Dec. 2025 adds up the quarterly data reported by the company within the most recent 12 months, which was NT$6.400.
* 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.
Enterprise Value is used because it is a more complete measure in reflecting how much an investor pays when buying a company. Free Cash Flow is an important financial metric because it represents the actual amount of cash at a company's disposal. Companies with a low EV-to-FCF ratio, combined with a strong balance sheet are generally considered as undervalued.
Formosa Optical Technology Co EV-to-FCF Related Terms
Formosa Optical Technology Co EV-to-FCF 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: EV-to-FCF Comparison
For the Medical Instruments & Supplies subindustry, Formosa Optical Technology Co's EV-to-FCF, along with its competitors' market caps and EV-to-FCF 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 EV-to-FCF vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Formosa Optical Technology Co's EV-to-FCF distribution charts can be found below:
* The bar in red indicates where Formosa Optical Technology Co's EV-to-FCF falls into.
Formosa Optical Technology Co's current Enterprise Value is NT$4,886 Mil.
Formosa Optical Technology Co's Free Cash Flow for the trailing twelve months (TTM) ended in Dec. 2025 adds up the quarterly data reported by the company within the most recent 12 months, which was NT$531 Mil.
* 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 EV-to-FCF of 9.20 as of Jul. 18, 2026. EV to FCF ratio is the company's enterprise value divided by free cash flow. View historical data on Formosa Optical Technology Co and its competitors. This is 22% below median its historical median of 11.85. According to the industry distribution chart, Formosa Optical Technology Co ranks #67 out of 414 companies in the Medical Devices & Instruments industry, placing it in the top 16.2%.
Is Formosa Optical Technology Co's EV-to-FCF too high?
Formosa Optical Technology Co's current EV-to-FCF of 9.20 is 22% below median its 10-year median of 11.85. The Medical Devices & Instruments industry median EV-to-FCF is 23.64. Formosa Optical Technology Co's value of 9.20 is 61.1% below this industry median. Based on the distribution chart, Formosa Optical Technology Co ranks #67 out of 414 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 81/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Optical Technology Co's EV-to-FCF compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Formosa Optical Technology Co ranks #67 out of 414 companies for EV-to-FCF. This places Formosa Optical Technology Co in the top 16% of its industry — outperforming the majority of peers. The industry median EV-to-FCF is 23.64. Formosa Optical Technology Co's value of 9.20 is 61.1% below this benchmark. While the company's 10-year median is 11.85 vs. the industry median of 23.64, Formosa Optical Technology Co has consistently been below 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 EV-to-FCF for a Medical Devices & Instruments company?
The median EV-to-FCF among Medical Devices & Instruments companies is 23.64, based on 414 companies in the industry. Companies in the top quartile (top 25%) have a EV-to-FCF significantly above this median, while those in the bottom quartile fall well below. However, EV-to-FCF should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Formosa Optical Technology Co's current EV-to-FCF of 9.20 is 61.1% below 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 EV-to-FCF mean?
A high EV-to-FCF can signal that a stock is expensive relative to its fundamentals. EV to FCF ratio is the company's enterprise value divided by free cash flow. View historical data on Formosa Optical Technology Co and its competitors. For the Medical Devices & Instruments industry, the median EV-to-FCF is 23.64 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Optical Technology Co's current EV-to-FCF is 9.20, which is 22% below median its own 10-year median of 11.85. 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$108.94, compared to a current price of NT$88.80 — trading 18.5% below its estimated fair value. The current EV-to-FCF is 9.20, which is 22% below median its 10-year median of 11.85 and 61.1% below the Medical Devices & Instruments industry median of 23.64. 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 EV-to-FCF calculated?
EV-to-FCF is calculated from a company's financial statements. For Formosa Optical Technology Co (ROCO:5312), the current EV-to-FCF is 9.20 as of Jul. 18, 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 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$88.80 is trading 18.5% below its estimated GF Value™ of NT$108.94.
GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.
Key valuation signals for ROCO:5312:
EV-to-FCF: 9.20 (22% below median its 10-year median of 11.85)
GF Value™: NT$108.94 vs. price of NT$88.80 (18.5% below fair value)
Industry Position: 61.1% below the Medical Devices & Instruments median (#67 of 414)
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
Get the complete analysis for ROCO:5312
EV-to-FCF is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:5312 has been successfully added to your 
