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.
PT RMK Energy TbkISX:RMKE -0.91%74 Operating Margin % is 9.73% as of Mar. 2026, which is 37% below its 10-year median of 15.47. GuruFocus rates ISX:RMKE with a GF Score™ of 74/100 and a GF Value™ of Rp121.21 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 130 Other Energy Sources companies, PT RMK Energy Tbk ranks better than 69.23% on this metric.
PT RMK Energy Tbk operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for PT RMK Energy Tbk's Operating Margin % or its related term are showing as below:
ISX:RMKE'
s Operating Margin % Range Over the Past 10 Years
Min: 11.72 Med: 15.47 Max: 19.46
Current: 12.45
ISX:RMKE's Operating Margin % is ranked better than 69.23% of 130
companies
in the Other Energy Sources industry
Industry Median: 4.57
vs ISX:RMKE: 12.45
PT RMK Energy Tbk's 5-Year Average Operating Margin % Growth Rate was 1.00% per year.
PT RMK Energy Tbk (ISX:RMKE) 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.
PT RMK Energy Tbk Operating Margin % Related Terms
PT RMK Energy Tbk Operating Margin % Historical Data
* Premium members only.
The historical data trend for PT RMK Energy Tbk'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.
PT RMK Energy Tbk Operating Margin % Competitor Comparison
For the Thermal Coal subindustry, PT RMK Energy Tbk'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.
PT RMK Energy Tbk Operating Margin % vs Other Energy Sources Industry
For the Other Energy Sources industry and Energy sector, PT RMK Energy Tbk's Operating Margin % distribution charts can be found below:
* The bar in red indicates where PT RMK Energy Tbk's Operating Margin % falls into.
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.
PT RMK Energy Tbk'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.
PT RMK Energy Tbk (ISX:RMKE) has a Operating Margin % of 9.73% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on PT RMK Energy Tbk and its competitors. This is 37% below median its historical median of 15.47. Over the past decade, PT RMK Energy Tbk's Operating Margin % has ranged from 11.72 to 19.46. According to the industry distribution chart, PT RMK Energy Tbk ranks #40 out of 130 companies in the Other Energy Sources industry, placing it in the top 30.8%.
Is PT RMK Energy Tbk's Operating Margin % too high?
PT RMK Energy Tbk's current Operating Margin % of 9.73% is 37% below median its 10-year median of 15.47. Over the past 10 years, this metric has ranged from a low of 11.72 to a high of 19.46. The Other Energy Sources industry median Operating Margin % is 4.57. PT RMK Energy Tbk's value of 9.73% is 112.9% above this industry median. Based on the distribution chart, PT RMK Energy Tbk ranks #40 out of 130 companies in the Other Energy Sources industry, which is above the industry midpoint. Overall, PT RMK Energy Tbk has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does PT RMK Energy Tbk's Operating Margin % compare to competitors?
According to the Other Energy Sources industry distribution chart, PT RMK Energy Tbk ranks #40 out of 130 companies for Operating Margin %. This puts PT RMK Energy Tbk in the upper half of its industry. The industry median Operating Margin % is 4.57. PT RMK Energy Tbk's value of 9.73% is 112.9% above this benchmark. Historically, PT RMK Energy Tbk's own Operating Margin % has ranged from 11.72 to 19.46 over the past decade. While the company's 10-year median is 15.47 vs. the industry median of 4.57, PT RMK Energy Tbk 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. PT RMK Energy Tbk's current Operating Margin % of 9.73% is 112.9% 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 PT RMK Energy Tbk 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. PT RMK Energy Tbk's current Operating Margin % is 9.73%, which is 37% below median its own 10-year median of 15.47. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PT RMK Energy Tbk stock overvalued right now?
Based on GuruFocus' analysis, PT RMK Energy Tbk (ISX:RMKE) is currently considered Significantly Overvalued. The stock's GF Value™ is Rp121.21, compared to a current price of Rp434.00 — trading 258.1% above its estimated fair value. The current Operating Margin % is 9.73%, which is 37% below median its 10-year median of 15.47 and 112.9% above the Other Energy Sources industry median of 4.57. PT RMK Energy Tbk's overall GF Score™ is 74/100 with 5 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 PT RMK Energy Tbk (ISX:RMKE), the current Operating Margin % is 9.73% 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 PT RMK Energy Tbk (ISX:RMKE) Overvalued in 2026?
Based on GuruFocus' analysis, PT RMK Energy Tbk stock appears to be overvalued.
The current stock price of Rp434.00 is trading 258.1% above its estimated GF Value™ of Rp121.21.
GuruFocus considers PT RMK Energy Tbk to be Significantly Overvalued.
Key valuation signals for ISX:RMKE:
Operating Margin %: 9.73% (37% below median its 10-year median of 15.47)
GF Value™: Rp121.21 vs. price of Rp434.00 (258.1% above fair value)
Industry Position: 112.9% above the Other Energy Sources median (#40 of 130)
No single metric tells the full story. See the ISX:RMKE stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PT RMK Energy Tbk is engaged in coal logistics services and coal trading, which includes loading and unloading at train stations, port transportation as well as barge loading and coal trading business. The Companies products and services are divided into two segments: Service Provision and coal trading. Its provision of services includes port services covering coal crushing services from large sizes to sizes according to buyers demand standards and coal loading services on barges and other services and heavy equipment rental. The majority of revenue is earn from coal sales.
74GF Score
Get the complete analysis for ISX:RMKE
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
ISX:RMKE has been successfully added to your 
