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Unicon Optical CoROCO:4150 -1.77%46 PB Ratio is 1.51 as of Jul. 15, 2026, which is 29% below its 10-year median of 2.12. GuruFocus rates ROCO:4150 with a GF Score™ of 46/100 and a GF Value™ of NT$8.19 (Possible Value Trap). The stock has 6 warning signs investors should review. Among 787 Medical Devices & Instruments companies, Unicon Optical Co ranks better than 63.66% on this metric.
Unicon Optical Co Ltd stock PB Ratio (=1.59) is close to 3-year low of 1.46.
The historical rank and industry rank for Unicon Optical Co's PB Ratio or its related term are showing as below:
ROCO:4150'
s PB Ratio Range Over the Past 10 Years
Min: 1.21 Med: 2.12 Max: 8.27
Current: 1.51
During the past 13 years, Unicon Optical Co's highest PB Ratio was 8.27. The lowest was 1.21. And the median was 2.12.
ROCO:4150's PB Ratio is ranked better than 63.66% of 787
companies
in the Medical Devices & Instruments industry
Industry Median: 2.05
vs ROCO:4150: 1.51
During the past 12 months, Unicon Optical Co's average Book Value Per Share Growth Rate was -36.50% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -10.90% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was -9.60% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was -12.50% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Unicon Optical Co was 0.20% per year. The lowest was -22.40% per year. And the median was -10.25% per year.
Back to Basics: PB Ratio
Unicon Optical Co (ROCO:4150) PB Ratio Explanation
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Unicon Optical Co PB Ratio Related Terms
Unicon Optical Co PB Ratio Historical Data
* Premium members only.
The historical data trend for Unicon Optical Co's PB Ratio 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.
For the Medical Instruments & Supplies subindustry, Unicon Optical Co's PB Ratio, along with its competitors' market caps and PB Ratio 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.
Unicon Optical Co PB Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Unicon Optical Co's PB Ratio distribution charts can be found below:
* The bar in red indicates where Unicon Optical Co's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Unicon Optical Co (ROCO:4150) has a PB Ratio of 1.51 as of Jul. 15, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Unicon Optical Co and its competitors. This is 29% below median its historical median of 2.12. Over the past decade, Unicon Optical Co's PB Ratio has ranged from 1.21 to 8.27. According to the industry distribution chart, Unicon Optical Co ranks #286 out of 787 companies in the Medical Devices & Instruments industry, placing it in the top 36.3%.
Is Unicon Optical Co's PB Ratio too high?
Unicon Optical Co's current PB Ratio of 1.51 is 29% below median its 10-year median of 2.12. Over the past 10 years, this metric has ranged from a low of 1.21 to a high of 8.27. The Medical Devices & Instruments industry median PB Ratio is 2.05. Unicon Optical Co's value of 1.51 is 26.3% below this industry median. Based on the distribution chart, Unicon Optical Co ranks #286 out of 787 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, Unicon Optical Co has a GF Score™ of 46/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Unicon Optical Co's PB Ratio compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Unicon Optical Co ranks #286 out of 787 companies for PB Ratio. This puts Unicon Optical Co in the upper half of its industry. The industry median PB Ratio is 2.05. Unicon Optical Co's value of 1.51 is 26.3% below this benchmark. Historically, Unicon Optical Co's own PB Ratio has ranged from 1.21 to 8.27 over the past decade. While the company's 10-year median is 2.12 vs. the industry median of 2.05, Unicon Optical 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 PB Ratio for a Medical Devices & Instruments company?
The median PB Ratio among Medical Devices & Instruments companies is 2.05, based on 787 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Unicon Optical Co's current PB Ratio of 1.51 is 26.3% 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Unicon Optical Co and its competitors. For the Medical Devices & Instruments industry, the median PB Ratio is 2.05 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Unicon Optical Co's current PB Ratio is 1.51, which is 29% below median its own 10-year median of 2.12. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Unicon Optical Co stock overvalued right now?
Based on GuruFocus' analysis, Unicon Optical Co (ROCO:4150) is currently considered Possible Value Trap. The stock's GF Value™ is NT$8.19, compared to a current price of NT$5.00 — trading 38.9% below its estimated fair value. The current PB Ratio is 1.51, which is 29% below median its 10-year median of 2.12 and 26.3% below the Medical Devices & Instruments industry median of 2.05. Unicon Optical Co's overall GF Score™ is 46/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Unicon Optical Co (ROCO:4150), the current PB Ratio is 1.51 as of Jul. 15, 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 Unicon Optical Co (ROCO:4150) Overvalued in 2026?
Based on GuruFocus' analysis, Unicon Optical Co stock appears to be undervalued.
The current stock price of NT$5.00 is trading 38.9% below its estimated GF Value™ of NT$8.19.
GuruFocus considers Unicon Optical Co to be Possible Value Trap.
Key valuation signals for ROCO:4150:
PB Ratio: 1.51 (29% below median its 10-year median of 2.12)
GF Value™: NT$8.19 vs. price of NT$5.00 (38.9% below fair value)
Industry Position: 26.3% below the Medical Devices & Instruments median (#286 of 787)
No single metric tells the full story. See the ROCO:4150 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Unicon Optical Co Ltd is engaged in the manufacture and sale of a contact lens in Taiwan and internationally. It offers disposable contact lens, spherical contact lens, color, and dual color lenses.
46GF Score
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