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.
Yankey Engineering CoTPE:6691 +0.69%99 3-Year ROIIC % is 52.85 as of Dec. 2025, which is 29% below its 10-year median of 74.73. GuruFocus rates TPE:6691 with a GF Score™ of 99/100 and a GF Value™ of NT$637.86 (Modestly Overvalued). The stock has 5 warning signs investors should review. Among 1,686 Construction companies, Yankey Engineering Co ranks better than 88.32% on this metric.
3-Year Return on Invested Incremental Capital (3-Year ROIIC %) measures the change in earnings as a percentage of change in investment over 3-year.
Yankey Engineering Co's 3-Year ROIIC % for the quarter that ended in Dec. 2025 was 52.85%. High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
The industry rank for Yankey Engineering Co's 3-Year ROIIC % or its related term are showing as below:
TPE:6691's 3-Year ROIIC % is ranked better than 88.32% of 1686
companies
in the Construction industry
Industry Median: 4.63
vs TPE:6691: 52.85
Yankey Engineering Co (TPE:6691) 3-Year ROIIC % Explanation
Return on Incremental Invested Capital (ROIIC) is an extension of Return on Investment Capital (ROIC). ROIC % tells investors how efficiently that profitability is earned per dollar of company capital. ROIIC narrows the focus even further and shows how profitable each additional unit of capital investment could be. ROIIC % is a more powerful metric than ROIC because it measures how much money the company can generate going forward on future capital investments.
High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
Be Aware
It's important to keep in mind that when tracking ROIIC, the metric is better suited to forecasting the trend of future returns rather than measuring current return on investment.
Yankey Engineering Co 3-Year ROIIC % Related Terms
Yankey Engineering Co 3-Year ROIIC % Historical Data
* Premium members only.
The historical data trend for Yankey Engineering Co's 3-Year ROIIC % 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.
TPE:6691 vs PWR, FIX, EME: 3-Year ROIIC % Comparison
For the Engineering & Construction subindustry, Yankey Engineering Co's 3-Year ROIIC %, along with its competitors' market caps and 3-Year ROIIC % 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.
Yankey Engineering Co 3-Year ROIIC % vs Construction Industry
For the Construction industry and Industrials sector, Yankey Engineering Co's 3-Year ROIIC % distribution charts can be found below:
* The bar in red indicates where Yankey Engineering Co's 3-Year ROIIC % falls into.
* 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.
** Annual data of NOPAT and Invested Capital was used to calculate 3-Year ROIIC %.
*** Please be aware that the ROIIC (Return on Invested Capital) calculations are based on company-level data using the primary share class. The calculated data provided is for demonstration purposes and may slightly differ from the results displayed in the title due to potential variations caused by currency exchange rate differences throughout the year.
Yankey Engineering Co (TPE:6691) has a 3-Year ROIIC % of 52.85 as of Dec. 2025. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Yankey Engineering Co and its competitors. This is 29% below median its historical median of 74.73. Over the past decade, Yankey Engineering Co's 3-Year ROIIC % has ranged from 36.92 to 101.77. According to the industry distribution chart, Yankey Engineering Co ranks #197 out of 1686 companies in the Construction industry, placing it in the top 11.7%.
Is Yankey Engineering Co's 3-Year ROIIC % too high?
Yankey Engineering Co's current 3-Year ROIIC % of 52.85 is 29% below median its 10-year median of 74.73. Over the past 10 years, this metric has ranged from a low of 36.92 to a high of 101.77. The Construction industry median 3-Year ROIIC % is 4.63. Yankey Engineering Co's value of 52.85 is 1041.5% above this industry median. Based on the distribution chart, Yankey Engineering Co ranks #197 out of 1686 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, Yankey Engineering Co has a GF Score™ of 99/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Yankey Engineering Co's 3-Year ROIIC % compare to PWR and FIX?
According to the Construction industry distribution chart, Yankey Engineering Co ranks #197 out of 1686 companies for 3-Year ROIIC %. This places Yankey Engineering Co in the top 12% of its industry — outperforming the majority of peers. The industry median 3-Year ROIIC % is 4.63. Yankey Engineering Co's value of 52.85 is 1041.5% above this benchmark. Historically, Yankey Engineering Co's own 3-Year ROIIC % has ranged from 36.92 to 101.77 over the past decade. While the company's 10-year median is 74.73 vs. the industry median of 4.63, Yankey Engineering Co 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 3-Year ROIIC % for a Construction company?
The median 3-Year ROIIC % among Construction companies is 4.63, based on 1,686 companies in the industry. Companies in the top quartile (top 25%) have a 3-Year ROIIC % significantly above this median, while those in the bottom quartile fall well below. However, 3-Year ROIIC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Yankey Engineering Co's current 3-Year ROIIC % of 52.85 is 1041.5% 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 3-Year ROIIC % mean?
A high 3-Year ROIIC % can signal that a stock is expensive relative to its fundamentals. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Yankey Engineering Co and its competitors. For the Construction industry, the median 3-Year ROIIC % is 4.63 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Yankey Engineering Co's current 3-Year ROIIC % is 52.85, which is 29% below median its own 10-year median of 74.73. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Yankey Engineering Co stock overvalued right now?
Based on GuruFocus' analysis, Yankey Engineering Co (TPE:6691) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$637.86, compared to a current price of NT$726.00 — trading 13.8% above its estimated fair value. The current 3-Year ROIIC % is 52.85, which is 29% below median its 10-year median of 74.73 and 1041.5% above the Construction industry median of 4.63. Yankey Engineering Co's overall GF Score™ is 99/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year ROIIC % calculated?
3-Year ROIIC % is calculated from a company's financial statements. For Yankey Engineering Co (TPE:6691), the current 3-Year ROIIC % is 52.85 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 Yankey Engineering Co (TPE:6691) Overvalued in 2026?
Based on GuruFocus' analysis, Yankey Engineering Co stock appears to be overvalued.
The current stock price of NT$726.00 is trading 13.8% above its estimated GF Value™ of NT$637.86.
GuruFocus considers Yankey Engineering Co to be Modestly Overvalued.
Key valuation signals for TPE:6691:
3-Year ROIIC %: 52.85 (29% below median its 10-year median of 74.73)
GF Value™: NT$637.86 vs. price of NT$726.00 (13.8% above fair value)
Industry Position: 1041.5% above the Construction median (#197 of 1686)
No single metric tells the full story. See the TPE:6691 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Yankey Engineering Co Ltd is engaged in the design and installation of clean room systems, refrigeration, air conditioning systems, and ice-making systems, as well as the sales of materials for these systems. The various services offered by the company include clean room system engineering, high and low voltage transmission system installation, design and construction of fire, water, and electrical systems, and providing comprehensive MEP (Mechanical, Electrical, Plumbing) turnkey services for commercial office buildings, among others. Geographically, the company generates the majority of its revenue from Taiwan and the rest from China, Thailand, Malaysia, and the USA.
99GF Score
Get the complete analysis for TPE:6691
3-Year ROIIC % 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:6691 has been successfully added to your 
