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Aethertek Technology CoROCO:3219 -1.90%75 PB Ratio is 3.69 as of Jul. 17, 2026, which is 16% above its 10-year median of 3.17. GuruFocus rates ROCO:3219 with a GF Score™ of 75/100 and a GF Value™ of NT$70.08 (Fairly Valued). The stock has 1 warning sign investors should review. Among 2,982 Industrial Products companies, Aethertek Technology Co ranks worse than 71.63% on this metric.
The historical rank and industry rank for Aethertek Technology Co's PB Ratio or its related term are showing as below:
ROCO:3219'
s PB Ratio Range Over the Past 10 Years
Min: 0.66 Med: 3.17 Max: 13.01
Current: 3.69
During the past 13 years, Aethertek Technology Co's highest PB Ratio was 13.01. The lowest was 0.66. And the median was 3.17.
ROCO:3219's PB Ratio is ranked worse than 71.63% of 2982
companies
in the Industrial Products industry
Industry Median: 2.14
vs ROCO:3219: 3.69
During the past 12 months, Aethertek Technology Co's average Book Value Per Share Growth Rate was 5.70% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 1.60% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 6.90% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 10.00% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Aethertek Technology Co was 60.50% per year. The lowest was -30.20% per year. And the median was -1.50% per year.
Back to Basics: PB Ratio
Aethertek Technology Co (ROCO:3219) 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.
* 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 Specialty Industrial Machinery subindustry, Aethertek Technology 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.
Aethertek Technology Co PB Ratio vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Aethertek Technology Co's PB Ratio distribution charts can be found below:
* The bar in red indicates where Aethertek Technology 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.
Aethertek Technology Co (ROCO:3219) has a PB Ratio of 3.69 as of Jul. 17, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Aethertek Technology Co and its competitors. This is 16% above median its historical median of 3.17. Over the past decade, Aethertek Technology Co's PB Ratio has ranged from 0.66 to 13.01. According to the industry distribution chart, Aethertek Technology Co ranks #2136 out of 2982 companies in the Industrial Products industry, placing it in the top 71.6%.
Is Aethertek Technology Co's PB Ratio too high?
Aethertek Technology Co's current PB Ratio of 3.69 is 16% above median its 10-year median of 3.17. Over the past 10 years, this metric has ranged from a low of 0.66 to a high of 13.01. The Industrial Products industry median PB Ratio is 2.14. Aethertek Technology Co's value of 3.69 is 72.4% above this industry median. Based on the distribution chart, Aethertek Technology Co ranks #2136 out of 2982 companies in the Industrial Products industry, which is below the industry midpoint. Overall, Aethertek Technology Co has a GF Score™ of 75/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Aethertek Technology Co's PB Ratio compare to GEV and ETN?
According to the Industrial Products industry distribution chart, Aethertek Technology Co ranks #2136 out of 2982 companies for PB Ratio. This places Aethertek Technology Co in the lower half of its industry. The industry median PB Ratio is 2.14. Aethertek Technology Co's value of 3.69 is 72.4% above this benchmark. Historically, Aethertek Technology Co's own PB Ratio has ranged from 0.66 to 13.01 over the past decade. While the company's 10-year median is 3.17 vs. the industry median of 2.14, Aethertek 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 PB Ratio for an Industrial Products company?
The median PB Ratio among Industrial Products companies is 2.14, based on 2,982 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. Aethertek Technology Co's current PB Ratio of 3.69 is 72.4% 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 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 Aethertek Technology Co and its competitors. For the Industrial Products industry, the median PB Ratio is 2.14 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aethertek Technology Co's current PB Ratio is 3.69, which is 16% above median its own 10-year median of 3.17. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aethertek Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Aethertek Technology Co (ROCO:3219) is currently considered Fairly Valued. The stock's GF Value™ is NT$70.08, compared to a current price of NT$72.30 — trading 3.2% above its estimated fair value. The current PB Ratio is 3.69, which is 16% above median its 10-year median of 3.17 and 72.4% above the Industrial Products industry median of 2.14. Aethertek Technology Co's overall GF Score™ is 75/100 with 1 warning sign 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 Aethertek Technology Co (ROCO:3219), the current PB Ratio is 3.69 as of Jul. 17, 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 Aethertek Technology Co (ROCO:3219) Overvalued in 2026?
Based on GuruFocus' analysis, Aethertek Technology Co stock appears to be overvalued.
The current stock price of NT$72.30 is trading 3.2% above its estimated GF Value™ of NT$70.08.
GuruFocus considers Aethertek Technology Co to be Fairly Valued.
Key valuation signals for ROCO:3219:
PB Ratio: 3.69 (16% above median its 10-year median of 3.17)
GF Value™: NT$70.08 vs. price of NT$72.30 (3.2% above fair value)
Industry Position: 72.4% above the Industrial Products median (#2136 of 2982)
No single metric tells the full story. See the ROCO:3219 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Aethertek Technology Co Ltd is a Taiwan-based company mainly engaged in the design, manufacturing, and sale of automation machinery and related equipment. Its product portfolio includes the T800 Functional Tester, T1000 Board-Level Tester, passive antennas, RF switches, shield boxes, and micro-probing equipment for microscale diagnostics, among others. In addition to its core products, the company provides solutions for 5G communication and offers test and measurement devices across various industries. Aethertek also offers design services encompassing software, hardware, and antenna development. Geographically, it derives maximum revenue from China, followed by Taiwan, India, and other regions.
75GF Score
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