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Mildex OpticalROCO:4729 +0.75%53 PB Ratio is 1.46 as of Jul. 15, 2026, which is 16% above its 10-year median of 1.26. GuruFocus rates ROCO:4729 with a GF Score™ of 53/100 and a GF Value™ of NT$19.29 (Fairly Valued). The stock has 3 warning signs investors should review. Among 2,419 Hardware companies, Mildex Optical ranks better than 67.8% on this metric.
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. As of today (2026-07-15), Mildex Optical's share price is NT$20.10. Mildex Optical's Book Value per Share for the quarter that ended in Dec. 2025 was NT$13.74. Hence, Mildex Optical's PB Ratio of today is 1.46.
Good Sign:
Mildex Optical Inc stock PB Ratio (=1.56) is close to 1-year low of 1.41.
The historical rank and industry rank for Mildex Optical's PB Ratio or its related term are showing as below:
ROCO:4729'
s PB Ratio Range Over the Past 10 Years
Min: 0.64 Med: 1.26 Max: 2.39
Current: 1.46
During the past 13 years, Mildex Optical's highest PB Ratio was 2.39. The lowest was 0.64. And the median was 1.26.
ROCO:4729's PB Ratio is ranked better than 67.8% of 2419
companies
in the Hardware industry
Industry Median: 2.27
vs ROCO:4729: 1.46
During the past 12 months, Mildex Optical's average Book Value Per Share Growth Rate was -7.20% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -0.30% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 3.40% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was -2.80% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Mildex Optical was 10.10% per year. The lowest was -18.90% per year. And the median was -3.60% per year.
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.
Mildex Optical PB Ratio Related Terms
Mildex Optical PB Ratio Historical Data
* Premium members only.
The historical data trend for Mildex Optical'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 Electronic Components subindustry, Mildex Optical'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.
Mildex Optical PB Ratio vs Hardware Industry
For the Hardware industry and Technology sector, Mildex Optical's PB Ratio distribution charts can be found below:
* The bar in red indicates where Mildex Optical'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.
Mildex Optical's PB Ratio for today is calculated as follows:
* 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.
Mildex Optical (ROCO:4729) has a PB Ratio of 1.46 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 Mildex Optical and its competitors. This is 16% above median its historical median of 1.26. Over the past decade, Mildex Optical's PB Ratio has ranged from 0.64 to 2.39. According to the industry distribution chart, Mildex Optical ranks #779 out of 2419 companies in the Hardware industry, placing it in the top 32.2%.
Is Mildex Optical's PB Ratio too high?
Mildex Optical's current PB Ratio of 1.46 is 16% above median its 10-year median of 1.26. Over the past 10 years, this metric has ranged from a low of 0.64 to a high of 2.39. The Hardware industry median PB Ratio is 2.27. Mildex Optical's value of 1.46 is 35.7% below this industry median. Based on the distribution chart, Mildex Optical ranks #779 out of 2419 companies in the Hardware industry, which is above the industry midpoint. Overall, Mildex Optical has a GF Score™ of 53/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Mildex Optical's PB Ratio compare to APH and GLW?
According to the Hardware industry distribution chart, Mildex Optical ranks #779 out of 2419 companies for PB Ratio. This puts Mildex Optical in the upper half of its industry. The industry median PB Ratio is 2.27. Mildex Optical's value of 1.46 is 35.7% below this benchmark. Historically, Mildex Optical's own PB Ratio has ranged from 0.64 to 2.39 over the past decade. While the company's 10-year median is 1.26 vs. the industry median of 2.27, Mildex Optical 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 Hardware company?
The median PB Ratio among Hardware companies is 2.27, based on 2,419 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. Mildex Optical's current PB Ratio of 1.46 is 35.7% 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 Mildex Optical and its competitors. For the Hardware industry, the median PB Ratio is 2.27 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Mildex Optical's current PB Ratio is 1.46, which is 16% above median its own 10-year median of 1.26. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Mildex Optical stock overvalued right now?
Based on GuruFocus' analysis, Mildex Optical (ROCO:4729) is currently considered Fairly Valued. The stock's GF Value™ is NT$19.29, compared to a current price of NT$20.10 — trading 4.2% above its estimated fair value. The current PB Ratio is 1.46, which is 16% above median its 10-year median of 1.26 and 35.7% below the Hardware industry median of 2.27. Mildex Optical's overall GF Score™ is 53/100 with 3 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 Mildex Optical (ROCO:4729), the current PB Ratio is 1.46 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 Mildex Optical (ROCO:4729) Overvalued in 2026?
Based on GuruFocus' analysis, Mildex Optical stock appears to be overvalued.
The current stock price of NT$20.10 is trading 4.2% above its estimated GF Value™ of NT$19.29.
GuruFocus considers Mildex Optical to be Fairly Valued.
Key valuation signals for ROCO:4729:
PB Ratio: 1.46 (16% above median its 10-year median of 1.26)
GF Value™: NT$19.29 vs. price of NT$20.10 (4.2% above fair value)
Industry Position: 35.7% below the Hardware median (#779 of 2419)
No single metric tells the full story. See the ROCO:4729 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Mildex Optical Inc is mainly engaged in the manufacture and trading of touch panels. The Company includes touch screen modules, touch display modules, and system total solutions. Its products include Touch Screens, Touch Display Modules, TPM & TDM Standard, and system solutions. It operates in Taiwan, which generates maximum revenue, as well as Asia, the Americas, and Europe.
53GF Score
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