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Jiin Yeeh Ding Enterprise CoROCO:8390 -1.46%78 Operating Margin % is 18.64% as of Dec. 2025, which is 131% above its 10-year median of 8.08. GuruFocus rates ROCO:8390 with a GF Score™ of 78/100 and a GF Value™ of NT$68.59 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 237 Waste Management companies, Jiin Yeeh Ding Enterprise Co ranks better than 69.2% on this metric.
Jiin Yeeh Ding Enterprise Co (ROCO:8390) 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.
Jiin Yeeh Ding Enterprise Co Operating Margin % Related Terms
Jiin Yeeh Ding Enterprise Co Operating Margin % Historical Data
* 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.
Jiin Yeeh Ding Enterprise Co Operating Margin % Chart
ROCO:8390 vs WM, RSG, WCN: Operating Margin % Comparison
For the Waste Management subindustry, Jiin Yeeh Ding Enterprise 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.
Jiin Yeeh Ding Enterprise Co Operating Margin % vs Waste Management Industry
For the Waste Management industry and Industrials sector, Jiin Yeeh Ding Enterprise Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Jiin Yeeh Ding Enterprise Co's Operating Margin % falls into.
Jiin Yeeh Ding Enterprise 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.
* 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.
Jiin Yeeh Ding Enterprise Co (ROCO:8390) has a Operating Margin % of 18.64% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Jiin Yeeh Ding Enterprise Co and its competitors. This is 131% above median its historical median of 8.08. Over the past decade, Jiin Yeeh Ding Enterprise Co's Operating Margin % has ranged from 0.49 to 16.21. According to the industry distribution chart, Jiin Yeeh Ding Enterprise Co ranks #73 out of 237 companies in the Waste Management industry, placing it in the top 30.8%.
Is Jiin Yeeh Ding Enterprise Co's Operating Margin % too high?
Jiin Yeeh Ding Enterprise Co's current Operating Margin % of 18.64% is 131% above median its 10-year median of 8.08. Over the past 10 years, this metric has ranged from a low of 0.49 to a high of 16.21. The Waste Management industry median Operating Margin % is 6.61. Jiin Yeeh Ding Enterprise Co's value of 18.64% is 182% above this industry median. Based on the distribution chart, Jiin Yeeh Ding Enterprise Co ranks #73 out of 237 companies in the Waste Management industry, which is above the industry midpoint. Overall, Jiin Yeeh Ding Enterprise Co has a GF Score™ of 78/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Jiin Yeeh Ding Enterprise Co's Operating Margin % compare to WM and RSG?
According to the Waste Management industry distribution chart, Jiin Yeeh Ding Enterprise Co ranks #73 out of 237 companies for Operating Margin %. This puts Jiin Yeeh Ding Enterprise Co in the upper half of its industry. The industry median Operating Margin % is 6.61. Jiin Yeeh Ding Enterprise Co's value of 18.64% is 182% above this benchmark. Historically, Jiin Yeeh Ding Enterprise Co's own Operating Margin % has ranged from 0.49 to 16.21 over the past decade. While the company's 10-year median is 8.08 vs. the industry median of 6.61, Jiin Yeeh Ding Enterprise 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 Operating Margin % for a Waste Management company?
The median Operating Margin % among Waste Management companies is 6.61, based on 237 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. Jiin Yeeh Ding Enterprise Co's current Operating Margin % of 18.64% is 182% 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 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 Jiin Yeeh Ding Enterprise Co and its competitors. For the Waste Management industry, the median Operating Margin % is 6.61 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Jiin Yeeh Ding Enterprise Co's current Operating Margin % is 18.64%, which is 131% above median its own 10-year median of 8.08. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jiin Yeeh Ding Enterprise Co stock overvalued right now?
Based on GuruFocus' analysis, Jiin Yeeh Ding Enterprise Co (ROCO:8390) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$68.59, compared to a current price of NT$94.80 — trading 38.2% above its estimated fair value. The current Operating Margin % is 18.64%, which is 131% above median its 10-year median of 8.08 and 182% above the Waste Management industry median of 6.61. Jiin Yeeh Ding Enterprise Co's overall GF Score™ is 78/100 with 2 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 Jiin Yeeh Ding Enterprise Co (ROCO:8390), the current Operating Margin % is 18.64% 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 Jiin Yeeh Ding Enterprise Co (ROCO:8390) Overvalued in 2026?
Based on GuruFocus' analysis, Jiin Yeeh Ding Enterprise Co stock appears to be overvalued.
The current stock price of NT$94.80 is trading 38.2% above its estimated GF Value™ of NT$68.59.
GuruFocus considers Jiin Yeeh Ding Enterprise Co to be Significantly Overvalued.
Key valuation signals for ROCO:8390:
Operating Margin %: 18.64% (131% above median its 10-year median of 8.08)
GF Value™: NT$68.59 vs. price of NT$94.80 (38.2% above fair value)
Industry Position: 182% above the Waste Management median (#73 of 237)
No single metric tells the full story. See the ROCO:8390 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Jiin Yeeh Ding Enterprise Co Ltd is engaged in metal recycling and processing, scrap metal trading, and electronic waste removal and processing. The group generates maximum revenue from the sale of recycled copper, followed by gold and mixed metal, including gold, and other products. Geographically, it derives maximum revenue from Taiwan, and the rest from China, Northeast Asia, Europe, and Southeast Asia.
78GF Score
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