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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.
The GF Value represents the intrinsic value of a stock, determined using GuruFocus' proprietary methodology. The GF Value Line on our stock Summary page provides an estimate of the stock’s fair-trading value.
To calculate this value, GuruFocus follows these steps:
We analyze historical correlations between the stock price and key business performance metrics, such as revenue, earnings, cash flow, and book value.
We identify the metrics that have the strongest historical correlation with the stock price and determine the historical multiples at which the stock has traded relative to these metrics.
Using these historical multiples as a reference, we estimate the stock's fair value while accounting for future business growth. Adjustments may be made based on the company’s past returns and growth trends.
GuruFocus believes that the GF Value Line represents the fair value at which a stock should trade. Stock prices typically fluctuate around this line. If a stock’s price is significantly above the GF Value Line, it is considered overvalued, and its future returns are likely to be lower. Conversely, if the stock price is significantly below the GF Value Line, its future returns are likely to be higher.
Ta-Yuan Cogeneration Co (ROCO:8931) GF Value Explanation
Based on the relationship between the current stock price and the GF Value, GuruFocus provides the following 6 ratings:
(1) These are some simple examples. You can access our GF Valuation filter under All-in-One Screener’s Fundamental tab, and Price-to-GF-Value filter under Valuation Ratio tab and set your own criteria.
(2) A sufficient margin of safety exists only when the stock is undervalued.
Possible Value Trap, Think Twice companies are those that appear significantly undervalued based on their Price-to-GF-Value ratio, but whose fundamentals show signs of weakness.
Indicators that a company may be a value trap include:
* Deteriorating Financial Health: A low Altman Z-scores indicates a higher risk of bankruptcy, or a low Piotroski F-Score. * Earnings Manipulation: A high Beneish M-score indicates potential earnings manipulation, raising concerns about the reliability of reported financials. * Stagnant or Declining Growth: Lack of revenue or earnings growth, or a recent slowdown, may signal limited future prospects.
Investors should conduct thorough due diligence, examining financial statements and growth indicators, to avoid falling into value traps.
Ta-Yuan Cogeneration Co's Price-to-GF-Value for today is calculated as
Price-to-GF-Value
=
Share Price
/
GF Value
=
42.35
/
47.23
=
0.90
* 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.
Ta-Yuan Cogeneration Co (ROCO:8931) has a GF Value of NT$47.23 as of Jul. 16, 2026. GF Value represents the current intrinsic value of a stock derived from our exclusive method. View historical data on Ta-Yuan Cogeneration Co and its competitors.
Is Ta-Yuan Cogeneration Co's GF Value too high?
Ta-Yuan Cogeneration Co's current GF Value is NT$47.23. Overall, Ta-Yuan Cogeneration Co has a GF Score™ of 79/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ta-Yuan Cogeneration Co's GF Value compare to NEE and SO?
Ta-Yuan Cogeneration Co's GF Value of NT$47.23 can be compared against companies in the Utilities - Regulated industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Value for an Utilities - Regulated company?
A good GF Value depends on the Utilities - Regulated industry context. However, GF Value 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 mean?
A high GF Value can signal that a stock is expensive relative to its fundamentals. GF Value represents the current intrinsic value of a stock derived from our exclusive method. View historical data on Ta-Yuan Cogeneration Co and its competitors. Ta-Yuan Cogeneration Co's current GF Value is NT$47.23. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ta-Yuan Cogeneration Co stock overvalued right now?
Based on GuruFocus' analysis, Ta-Yuan Cogeneration Co (ROCO:8931) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$47.23, compared to a current price of NT$42.35 — trading 10.3% below its estimated fair value. The current GF Value is NT$47.23. Ta-Yuan Cogeneration Co's overall GF Score™ is 79/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Value calculated?
GF Value is calculated from a company's financial statements. For Ta-Yuan Cogeneration Co (ROCO:8931), the current GF Value is NT$47.23 as of Jul. 16, 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 Ta-Yuan Cogeneration Co (ROCO:8931) Overvalued in 2026?
Based on GuruFocus' analysis, Ta-Yuan Cogeneration Co stock appears to be undervalued.
The current stock price of NT$42.35 is trading 10.3% below its estimated GF Value™ of NT$47.23.
GuruFocus considers Ta-Yuan Cogeneration Co to be Modestly Undervalued.
Key valuation signals for ROCO:8931:
GF Value: NT$47.23
GF Value™: NT$47.23 vs. price of NT$42.35 (10.3% below fair value)
No single metric tells the full story. See the ROCO:8931 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ta-Yuan Cogeneration Co Ltd engages mainly in operating the cogeneration business, operating and repairing equipment, processing waste disposal, managing incinerators, and processing refuse-derived fuel. It is involved in the operation, management, and maintenance of cogeneration plants, as well as waste disposal and incinerator management. Through the development of cogeneration, the company focuses on supplying power to industrial areas and balancing peak and off-peak electricity demand. The company's reportable segments are: Plant of Cogeneration, which generates the maximum revenue, and Plant of Renewable Energy. Geographically, it operates only in Taiwan.
79GF Score
Get the complete analysis for ROCO:8931
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