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Ta-Yuan Cogeneration CoROCO:8931 79 Operating Margin % is 1.62% as of Dec. 2025, which is 86% below its 10-year median of 11.26. GuruFocus rates ROCO:8931 with a GF Score™ of 79/100 and a GF Value™ of NT$47.23 (Modestly Undervalued). The stock has 8 warning signs investors should review. Among 499 Utilities - Regulated companies, Ta-Yuan Cogeneration Co ranks worse than 60.32% on this metric.
Ta-Yuan Cogeneration Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -1.7%.
The historical rank and industry rank for Ta-Yuan Cogeneration Co's Operating Margin % or its related term are showing as below:
ROCO:8931'
s Operating Margin % Range Over the Past 10 Years
Min: 8.45 Med: 11.26 Max: 15.27
Current: 10.9
ROCO:8931's Operating Margin % is ranked worse than 60.32% of 499
companies
in the Utilities - Regulated industry
Industry Median: 14.85
vs ROCO:8931: 10.90
Ta-Yuan Cogeneration Co's 5-Year Average Operating Margin % Growth Rate was -1.70% per year.
Ta-Yuan Cogeneration Co (ROCO:8931) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Ta-Yuan Cogeneration Co Operating Margin % Related Terms
Ta-Yuan Cogeneration Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for Ta-Yuan Cogeneration Co's Operating Margin % 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.
ROCO:8931 vs NEE, SO, DUK: Operating Margin % Comparison
For the Utilities - Regulated Electric subindustry, Ta-Yuan Cogeneration Co's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
Ta-Yuan Cogeneration Co Operating Margin % vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Ta-Yuan Cogeneration Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Ta-Yuan Cogeneration Co's Operating Margin % falls into.
Ta-Yuan Cogeneration Co Operating Margin % Calculation
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Ta-Yuan Cogeneration Co's Operating Margin % for the fiscal year that ended in Dec. 2025 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.
Ta-Yuan Cogeneration Co (ROCO:8931) has a Operating Margin % of 1.62% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Ta-Yuan Cogeneration Co and its competitors. This is 86% below median its historical median of 11.26. Over the past decade, Ta-Yuan Cogeneration Co's Operating Margin % has ranged from 8.45 to 15.27. According to the industry distribution chart, Ta-Yuan Cogeneration Co ranks #301 out of 499 companies in the Utilities - Regulated industry, placing it in the top 60.3%.
Is Ta-Yuan Cogeneration Co's Operating Margin % too high?
Ta-Yuan Cogeneration Co's current Operating Margin % of 1.62% is 86% below median its 10-year median of 11.26. Over the past 10 years, this metric has ranged from a low of 8.45 to a high of 15.27. The Utilities - Regulated industry median Operating Margin % is 14.85. Ta-Yuan Cogeneration Co's value of 1.62% is 89.1% below this industry median. Based on the distribution chart, Ta-Yuan Cogeneration Co ranks #301 out of 499 companies in the Utilities - Regulated industry, which is below the industry midpoint. 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 Operating Margin % compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, Ta-Yuan Cogeneration Co ranks #301 out of 499 companies for Operating Margin %. This places Ta-Yuan Cogeneration Co in the lower half of its industry. The industry median Operating Margin % is 14.85. Ta-Yuan Cogeneration Co's value of 1.62% is 89.1% below this benchmark. Historically, Ta-Yuan Cogeneration Co's own Operating Margin % has ranged from 8.45 to 15.27 over the past decade. While the company's 10-year median is 11.26 vs. the industry median of 14.85, Ta-Yuan Cogeneration Co has consistently been below 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 Operating Margin % for an Utilities - Regulated company?
The median Operating Margin % among Utilities - Regulated companies is 14.85, based on 499 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Ta-Yuan Cogeneration Co's current Operating Margin % of 1.62% is 89.1% below 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Ta-Yuan Cogeneration Co and its competitors. For the Utilities - Regulated industry, the median Operating Margin % is 14.85 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ta-Yuan Cogeneration Co's current Operating Margin % is 1.62%, which is 86% below median its own 10-year median of 11.26. 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 Operating Margin % is 1.62%, which is 86% below median its 10-year median of 11.26 and 89.1% below the Utilities - Regulated industry median of 14.85. 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 Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Ta-Yuan Cogeneration Co (ROCO:8931), the current Operating Margin % is 1.62% as of Dec. 2025. 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:
Operating Margin %: 1.62% (86% below median its 10-year median of 11.26)
GF Value™: NT$47.23 vs. price of NT$42.35 (10.3% below fair value)
Industry Position: 89.1% below the Utilities - Regulated median (#301 of 499)
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
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