Lee Chang Yung Technology (TPE:4989) GF Value Rank: 1 (As of Aug. 01, 2026) — 75% Below Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

TPE:4989 Lee Chang Yung Technology Corp TPE:4989
49 GF Score
Price NT$55.60
GF Value NT$16.54
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Lee Chang Yung Technology GF Value Rank?

Lee Chang Yung Technology TPE:4989 +9.02% 49 GF Value Rank is 1 as of Aug. 01, 2026, which is 75% below its 10-year median of 4.00. GuruFocus rates TPE:4989 with a GF Score™ of 49/100 and a GF Value™ of NT$16.54 (Significantly Overvalued). The stock has 4 warning signs investors should review.

Lee Chang Yung Technology has the GF Value Rank of 1.

GF Value Rank evaluates the exclusive GuruFocus valuation and performance of a stock, rated on a scale from 1 to 10. It is determined by the price-to-GF-Value (P/GF Value) ratio, a proprietary metric calculated based on historical multiples along with an adjustment factor based on a company's past returns and growth and future estimates of the business' performance.

GuruFocus found that for valuation, we cannot simply give stocks a better GF Value rank simply because they have a lower P/GF Value ratio. Backtesting shows that over the long term, the two worst-performing groups are the most expensive group (with the highest P/GF Value ratio) and the least expensive group (with the lowest P/GF Value ratio).

We can understand why the most expensive group underperforms. We were initially puzzled by the underperformance of the least expensive group, but we realized there is a reason why some stocks are super cheap. If they look too undervalued, it is often because the businesses behind them are poor quality. The market realized this and gave them low valuations. In a way, the market is efficient.

After multiple backtesting analyses, we granted the stocks in third-cheapest percentile the highest GF Value rank, as they have performed the best over a full market cycle. Stock performance is actually not as sensitive to valuation as it is to growth and profitability. On average, the companies in the 20%-50% valuation groups have similar performances. Therefore, we should avoid the most expensive and the least expensive stocks. We can be more tolerant of valuation.

A higher score indicates a stock with a relatively low valuation and substantial potential for outperformance. Conversely, a lower score often reflects stocks that are either highly overvalued or deeply undervalued, both of which tend to underperform.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.


Lee Chang Yung Technology GF Value Rank Related Terms


TPE:4989 vs SCCO, FCX: GF Value Rank Comparison

For the Copper subindustry, Lee Chang Yung Technology's GF Value Rank, along with its competitors' market caps and GF Value Rank 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 GF Value Rank vs Metals & Mining Industry

For the Metals & Mining industry and Basic Materials sector, Lee Chang Yung Technology's GF Value Rank distribution charts can be found below:

* The bar in red indicates where Lee Chang Yung Technology's GF Value Rank falls into.


TPE:4989
49GF Score
Lee Chang Yung Technology Corp TPE:4989
GF Value Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about GF Value Rank →
What does a GF Value Rank of 1 mean?
Lee Chang Yung Technology (TPE:4989) has a GF Value Rank of 1 as of Aug. 01, 2026. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Lee Chang Yung Technology and its competitors. This is 75% below median its historical median of 4.00. Over the past decade, Lee Chang Yung Technology's GF Value Rank has ranged from 1.00 to 10.00.
Is Lee Chang Yung Technology's GF Value Rank too high?
Lee Chang Yung Technology's current GF Value Rank of 1 is 75% below median its 10-year median of 4.00. Over the past 10 years, this metric has ranged from a low of 1.00 to a high of 10.00. Overall, Lee Chang Yung Technology has a GF Score™ of 49/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Lee Chang Yung Technology's GF Value Rank compare to SCCO and FCX?
Lee Chang Yung Technology's GF Value Rank of 1 can be compared against companies in the Metals & Mining industry. Historically, Lee Chang Yung Technology's own GF Value Rank has ranged from 1.00 to 10.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Value Rank for a Metals & Mining company?
A good GF Value Rank depends on the Metals & Mining industry context. However, GF Value Rank should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high GF Value Rank mean?
A high GF Value Rank can signal that a stock is expensive relative to its fundamentals. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Lee Chang Yung Technology and its competitors. Lee Chang Yung Technology's current GF Value Rank is 1, which is 75% below median its own 10-year median of 4.00. 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$16.54, compared to a current price of NT$55.60 — trading 236.2% above its estimated fair value. The current GF Value Rank is 1, which is 75% below median its 10-year median of 4.00. Lee Chang Yung Technology's overall GF Score™ is 49/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Value Rank calculated?
GF Value Rank is calculated from a company's financial statements. For Lee Chang Yung Technology (TPE:4989), the current GF Value Rank is 1 as of Aug. 01, 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$55.60 is trading 236.2% above its estimated GF Value™ of NT$16.54. GuruFocus considers Lee Chang Yung Technology to be Significantly Overvalued.

Key valuation signals for TPE:4989:

  • GF Value Rank: 1 (75% below median its 10-year median of 4.00)
  • GF Value™: NT$16.54 vs. price of NT$55.60 (236.2% above fair value)
  • GF Score™: 49/100 with 4 warning signs

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 Business Description

Address Bade Road, 5th Floor, No. 83, Section 4, Songshan District, Taipei City, TWN
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.
49GF Score

Get the complete analysis for TPE:4989

GF Value Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$55.60
Price
NT$16.54
GF Value