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.
Lee Chang Yung TechnologyTPE:4989 -8.11%50 Cyclically Adjusted PB Ratio is 2.99 as of Jul. 31, 2026, which is 97% above its 10-year median of 1.52. GuruFocus rates TPE:4989 with a GF Score™ of 50/100 and a GF Value™ of NT$16.55 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 1,535 Metals & Mining companies, Lee Chang Yung Technology ranks worse than 70.03% on this metric.
The historical rank and industry rank for Lee Chang Yung Technology's Cyclically Adjusted PB Ratio or its related term are showing as below:
TPE:4989'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.81 Med: 1.52 Max: 6.47
Current: 2.99
During the past years, Lee Chang Yung Technology's highest Cyclically Adjusted PB Ratio was 6.47. The lowest was 0.81. And the median was 1.52.
TPE:4989's Cyclically Adjusted PB Ratio is ranked worse than 70.03% of 1535
companies
in the Metals & Mining industry
Industry Median: 1.4
vs TPE:4989: 2.99
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.
Lee Chang Yung Technology's adjusted book value per share data for the three months ended in Dec. 2025 was NT$10.200. 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$17.08 for the trailing ten years ended in Dec. 2025.
Shiller PE for Stocks: The True Measure of Stock Valuation
Lee Chang Yung Technology (TPE:4989) 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.
Lee Chang Yung Technology Cyclically Adjusted PB Ratio Related Terms
Lee Chang Yung Technology Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Lee Chang Yung Technology'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.
Lee Chang Yung Technology Cyclically Adjusted PB Ratio Chart
TPE:4989 vs SCCO, FCX: Cyclically Adjusted PB Ratio Comparison
For the Copper subindustry, Lee Chang Yung Technology'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.
Lee Chang Yung Technology Cyclically Adjusted PB Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Lee Chang Yung Technology's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Lee Chang Yung Technology's Cyclically Adjusted PB Ratio falls into.
Lee Chang Yung Technology 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.
* 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 2.99 mean?
Lee Chang Yung Technology (TPE:4989) has a Cyclically Adjusted PB Ratio of 2.99 as of Jul. 31, 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 Lee Chang Yung Technology and its competitors. This is 97% above median its historical median of 1.52. Over the past decade, Lee Chang Yung Technology's Cyclically Adjusted PB Ratio has ranged from 0.81 to 6.47. According to the industry distribution chart, Lee Chang Yung Technology ranks #1075 out of 1535 companies in the Metals & Mining industry, placing it in the top 70%.
Is Lee Chang Yung Technology's Cyclically Adjusted PB Ratio too high?
Lee Chang Yung Technology's current Cyclically Adjusted PB Ratio of 2.99 is 97% above median its 10-year median of 1.52. Over the past 10 years, this metric has ranged from a low of 0.81 to a high of 6.47. The Metals & Mining industry median Cyclically Adjusted PB Ratio is 1.40. Lee Chang Yung Technology's value of 2.99 is 113.6% above this industry median. Based on the distribution chart, Lee Chang Yung Technology ranks #1075 out of 1535 companies in the Metals & Mining industry, which is below the industry midpoint. Overall, Lee Chang Yung Technology has a GF Score™ of 50/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Lee Chang Yung Technology's Cyclically Adjusted PB Ratio compare to SCCO and FCX?
According to the Metals & Mining industry distribution chart, Lee Chang Yung Technology ranks #1075 out of 1535 companies for Cyclically Adjusted PB Ratio. This places Lee Chang Yung Technology in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.40. Lee Chang Yung Technology's value of 2.99 is 113.6% above this benchmark. Historically, Lee Chang Yung Technology's own Cyclically Adjusted PB Ratio has ranged from 0.81 to 6.47 over the past decade. While the company's 10-year median is 1.52 vs. the industry median of 1.40, Lee Chang Yung Technology 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 Metals & Mining company?
The median Cyclically Adjusted PB Ratio among Metals & Mining companies is 1.40, based on 1,535 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. Lee Chang Yung Technology's current Cyclically Adjusted PB Ratio of 2.99 is 113.6% 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 Lee Chang Yung Technology and its competitors. For the Metals & Mining industry, the median Cyclically Adjusted PB Ratio is 1.40 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Lee Chang Yung Technology's current Cyclically Adjusted PB Ratio is 2.99, which is 97% above median its own 10-year median of 1.52. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Lee Chang Yung Technology stock overvalued right now?
Based on GuruFocus' analysis, Lee Chang Yung Technology (TPE:4989) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$16.55, compared to a current price of NT$51.00 — trading 208.2% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 2.99, which is 97% above median its 10-year median of 1.52 and 113.6% above the Metals & Mining industry median of 1.40. Lee Chang Yung Technology's overall GF Score™ is 50/100 with 4 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 Lee Chang Yung Technology (TPE:4989), the current Cyclically Adjusted PB Ratio is 2.99 as of Jul. 31, 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 Lee Chang Yung Technology (TPE:4989) Overvalued in 2026?
Based on GuruFocus' analysis, Lee Chang Yung Technology stock appears to be overvalued.
The current stock price of NT$51.00 is trading 208.2% above its estimated GF Value™ of NT$16.55.
GuruFocus considers Lee Chang Yung Technology to be Significantly Overvalued.
Key valuation signals for TPE:4989:
Cyclically Adjusted PB Ratio: 2.99 (97% above median its 10-year median of 1.52)
GF Value™: NT$16.55 vs. price of NT$51.00 (208.2% above fair value)
Industry Position: 113.6% above the Metals & Mining median (#1075 of 1535)
No single metric tells the full story. See the TPE:4989 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Lee Chang Yung Technology Corp produces, manufactures, and sells electrolytic copper foil, an upstream material for printed circuit boards. The Group currently sells a single product, copper foil.
50GF Score
Get the complete analysis for TPE:4989
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
TPE:4989 has been successfully added to your 
