Wintime Energy Group CoSHSE:600157 -1.92%59 Operating Margin % is 9.43% as of Mar. 2026, which is 46% below its 10-year median of 17.31. GuruFocus rates SHSE:600157 with a GF Score™ of 59/100 and a GF Value™ of ¥1.11 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 130 Other Energy Sources companies, Wintime Energy Group Co ranks better than 63.08% on this metric.
Wintime Energy Group Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -5%.
The historical rank and industry rank for Wintime Energy Group Co's Operating Margin % or its related term are showing as below:
SHSE:600157'
s Operating Margin % Range Over the Past 10 Years
Min: 9.83 Med: 17.31 Max: 25.33
Current: 9.83
SHSE:600157's Operating Margin % is ranked better than 63.08% of 130
companies
in the Other Energy Sources industry
Industry Median: 4.57
vs SHSE:600157: 9.83
Wintime Energy Group Co's 5-Year Average Operating Margin % Growth Rate was -5.00% per year.
Wintime Energy Group Co (SHSE:600157) 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.
Wintime Energy Group Co Operating Margin % Related Terms
Wintime Energy Group Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for Wintime Energy Group 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.
Wintime Energy Group Co Operating Margin % Competitor Comparison
For the Thermal Coal subindustry, Wintime Energy Group 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.
Wintime Energy Group Co Operating Margin % vs Other Energy Sources Industry
For the Other Energy Sources industry and Energy sector, Wintime Energy Group Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Wintime Energy Group Co's Operating Margin % falls into.
Wintime Energy Group 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.
Wintime Energy Group 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.
Wintime Energy Group Co (SHSE:600157) has a Operating Margin % of 9.43% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Wintime Energy Group Co and its competitors. This is 46% below median its historical median of 17.31. Over the past decade, Wintime Energy Group Co's Operating Margin % has ranged from 9.83 to 25.33. According to the industry distribution chart, Wintime Energy Group Co ranks #48 out of 130 companies in the Other Energy Sources industry, placing it in the top 36.9%.
Is Wintime Energy Group Co's Operating Margin % too high?
Wintime Energy Group Co's current Operating Margin % of 9.43% is 46% below median its 10-year median of 17.31. Over the past 10 years, this metric has ranged from a low of 9.83 to a high of 25.33. The Other Energy Sources industry median Operating Margin % is 4.57. Wintime Energy Group Co's value of 9.43% is 106.3% above this industry median. Based on the distribution chart, Wintime Energy Group Co ranks #48 out of 130 companies in the Other Energy Sources industry, which is above the industry midpoint. Overall, Wintime Energy Group Co has a GF Score™ of 59/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Wintime Energy Group Co's Operating Margin % compare to competitors?
According to the Other Energy Sources industry distribution chart, Wintime Energy Group Co ranks #48 out of 130 companies for Operating Margin %. This puts Wintime Energy Group Co in the upper half of its industry. The industry median Operating Margin % is 4.57. Wintime Energy Group Co's value of 9.43% is 106.3% above this benchmark. Historically, Wintime Energy Group Co's own Operating Margin % has ranged from 9.83 to 25.33 over the past decade. While the company's 10-year median is 17.31 vs. the industry median of 4.57, Wintime Energy Group 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 an Other Energy Sources company?
The median Operating Margin % among Other Energy Sources companies is 4.57, based on 130 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. Wintime Energy Group Co's current Operating Margin % of 9.43% is 106.3% 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 Wintime Energy Group Co and its competitors. For the Other Energy Sources industry, the median Operating Margin % is 4.57 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Wintime Energy Group Co's current Operating Margin % is 9.43%, which is 46% below median its own 10-year median of 17.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Wintime Energy Group Co stock overvalued right now?
Based on GuruFocus' analysis, Wintime Energy Group Co (SHSE:600157) is currently considered Significantly Overvalued. The stock's GF Value™ is ¥1.11, compared to a current price of ¥1.53 — trading 37.8% above its estimated fair value. The current Operating Margin % is 9.43%, which is 46% below median its 10-year median of 17.31 and 106.3% above the Other Energy Sources industry median of 4.57. Wintime Energy Group Co's overall GF Score™ is 59/100 with 6 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 Wintime Energy Group Co (SHSE:600157), the current Operating Margin % is 9.43% as of Mar. 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 Wintime Energy Group Co (SHSE:600157) Overvalued in 2026?
Based on GuruFocus' analysis, Wintime Energy Group Co stock appears to be overvalued.
The current stock price of ¥1.53 is trading 37.8% above its estimated GF Value™ of ¥1.11.
GuruFocus considers Wintime Energy Group Co to be Significantly Overvalued.
Key valuation signals for SHSE:600157:
Operating Margin %: 9.43% (46% below median its 10-year median of 17.31)
GF Value™: ¥1.11 vs. price of ¥1.53 (37.8% above fair value)
Industry Position: 106.3% above the Other Energy Sources median (#48 of 130)
No single metric tells the full story. See the SHSE:600157 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Wintime Energy Group Co Ltd is an energy company. It is mainly engaged in coal, electric power, petrochemical, and other energy industries. The company's products are mainly coking coal and blended coking coal.
59GF Score
Get the complete analysis for SHSE:600157
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
SHSE:600157 has been successfully added to your 
