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TacBright OptronicsROCO:6434 -3.21%39 Cyclically Adjusted PB Ratio is 2.44 as of Aug. 15, 2026, which is 209% above its 10-year median of 0.79. GuruFocus rates ROCO:6434 with a GF Score™ of 39/100 and a GF Value™ of NT$4.07 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 1,210 Chemicals companies, TacBright Optronics ranks worse than 65.87% on this metric.
The historical rank and industry rank for TacBright Optronics's Cyclically Adjusted PB Ratio or its related term are showing as below:
ROCO:6434'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.35 Med: 0.79 Max: 4.79
Current: 2.58
During the past 13 years, TacBright Optronics's highest Cyclically Adjusted PB Ratio was 4.79. The lowest was 0.35. And the median was 0.79.
ROCO:6434's Cyclically Adjusted PB Ratio is ranked worse than 65.87% of 1210
companies
in the Chemicals industry
Industry Median: 1.65
vs ROCO:6434: 2.58
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
TacBright Optronics's adjusted book value per share data of for the fiscal year that ended in Dec25 was NT$4.390. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is NT$6.20 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
TacBright Optronics (ROCO:6434) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
TacBright Optronics Cyclically Adjusted PB Ratio Related Terms
TacBright Optronics Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for TacBright Optronics's Cyclically Adjusted 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.
TacBright Optronics Cyclically Adjusted PB Ratio Chart
ROCO:6434 vs LIN, SHW, ECL: Cyclically Adjusted PB Ratio Comparison
For the Specialty Chemicals subindustry, TacBright Optronics's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted 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.
TacBright Optronics Cyclically Adjusted PB Ratio vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, TacBright Optronics's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where TacBright Optronics's Cyclically Adjusted PB Ratio falls into.
TacBright Optronics Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
TacBright Optronics's Cyclically Adjusted PB Ratio for today is calculated as
* 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 2.44 mean?
TacBright Optronics (ROCO:6434) has a Cyclically Adjusted PB Ratio of 2.44 as of Aug. 15, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on TacBright Optronics and its competitors. This is 209% above median its historical median of 0.79. Over the past decade, TacBright Optronics' Cyclically Adjusted PB Ratio has ranged from 0.35 to 4.79. According to the industry distribution chart, TacBright Optronics ranks #797 out of 1210 companies in the Chemicals industry, placing it in the top 65.9%.
Is TacBright Optronics' Cyclically Adjusted PB Ratio too high?
TacBright Optronics' current Cyclically Adjusted PB Ratio of 2.44 is 209% above median its 10-year median of 0.79. Over the past 10 years, this metric has ranged from a low of 0.35 to a high of 4.79. The Chemicals industry median Cyclically Adjusted PB Ratio is 1.65. TacBright Optronics' value of 2.44 is 47.9% above this industry median. Based on the distribution chart, TacBright Optronics ranks #797 out of 1210 companies in the Chemicals industry, which is below the industry midpoint. Overall, TacBright Optronics has a GF Score™ of 39/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does TacBright Optronics' Cyclically Adjusted PB Ratio compare to LIN and SHW?
According to the Chemicals industry distribution chart, TacBright Optronics ranks #797 out of 1210 companies for Cyclically Adjusted PB Ratio. This places TacBright Optronics in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.65. TacBright Optronics' value of 2.44 is 47.9% above this benchmark. Historically, TacBright Optronics' own Cyclically Adjusted PB Ratio has ranged from 0.35 to 4.79 over the past decade. While the company's 10-year median is 0.79 vs. the industry median of 1.65, TacBright Optronics 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 Cyclically Adjusted PB Ratio for a Chemicals company?
The median Cyclically Adjusted PB Ratio among Chemicals companies is 1.65, based on 1,210 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. TacBright Optronics's current Cyclically Adjusted PB Ratio of 2.44 is 47.9% 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on TacBright Optronics and its competitors. For the Chemicals industry, the median Cyclically Adjusted PB Ratio is 1.65 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. TacBright Optronics's current Cyclically Adjusted PB Ratio is 2.44, which is 209% above median its own 10-year median of 0.79. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TacBright Optronics stock overvalued right now?
Based on GuruFocus' analysis, TacBright Optronics (ROCO:6434) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$4.07, compared to a current price of NT$15.10 — trading 271% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 2.44, which is 209% above median its 10-year median of 0.79 and 47.9% above the Chemicals industry median of 1.65. TacBright Optronics' overall GF Score™ is 39/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For TacBright Optronics (ROCO:6434), the current Cyclically Adjusted PB Ratio is 2.44 as of Aug. 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 TacBright Optronics (ROCO:6434) Overvalued in 2026?
Based on GuruFocus' analysis, TacBright Optronics stock appears to be overvalued.
The current stock price of NT$15.10 is trading 271% above its estimated GF Value™ of NT$4.07.
GuruFocus considers TacBright Optronics to be Significantly Overvalued.
Key valuation signals for ROCO:6434:
Cyclically Adjusted PB Ratio: 2.44 (209% above median its 10-year median of 0.79)
GF Value™: NT$4.07 vs. price of NT$15.10 (271% above fair value)
Industry Position: 47.9% above the Chemicals median (#797 of 1210)
No single metric tells the full story. See the ROCO:6434 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
TacBright Optronics Corp is engaged in synthetic resin and plastic manufacturing, surface treatment, wholesale and retail of chemical raw materials, and electronics. Wholesale and retail of sub-materials and manufacturing of precision chemical materials.
39GF Score
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