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Gulf Development PCLBKK:GULF -1.14%16 Operating Margin % is 20.55% as of Mar. 2026, which is 17% above its 10-year median of 17.52. GuruFocus rates BKK:GULF with a GF Score™ of 16/100. The stock has 12 warning signs investors should review. Among 422 Utilities - Independent Power Producers companies, Gulf Development PCL ranks better than 56.87% on this metric.
The historical rank and industry rank for Gulf Development PCL's Operating Margin % or its related term are showing as below:
BKK:GULF'
s Operating Margin % Range Over the Past 10 Years
Min: -243.88 Med: 17.52 Max: 22.73
Current: 17.68
BKK:GULF's Operating Margin % is ranked better than 56.87% of 422
companies
in the Utilities - Independent Power Producers industry
Industry Median: 13.55
vs BKK:GULF: 17.68
Gulf Development PCL's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.
Gulf Development PCL (BKK:GULF) 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.
Gulf Development PCL Operating Margin % Related Terms
Gulf Development PCL Operating Margin % Historical Data
* Premium members only.
The historical data trend for Gulf Development PCL'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.
BKK:GULF vs CEG, VST, NRG: Operating Margin % Comparison
For the Utilities - Independent Power Producers subindustry, Gulf Development PCL'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.
Gulf Development PCL Operating Margin % vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Gulf Development PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Gulf Development PCL's Operating Margin % falls into.
Gulf Development PCL 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.
Gulf Development PCL'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.
Gulf Development PCL (BKK:GULF) has a Operating Margin % of 20.55% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Gulf Development PCL and its competitors. This is 17% above median its historical median of 17.52. According to the industry distribution chart, Gulf Development PCL ranks #182 out of 422 companies in the Utilities - Independent Power Producers industry, placing it in the top 43.1%.
Is Gulf Development PCL's Operating Margin % too high?
Gulf Development PCL's current Operating Margin % of 20.55% is 17% above median its 10-year median of 17.52. The Utilities - Independent Power Producers industry median Operating Margin % is 13.55. Gulf Development PCL's value of 20.55% is 51.7% above this industry median. Based on the distribution chart, Gulf Development PCL ranks #182 out of 422 companies in the Utilities - Independent Power Producers industry, which is above the industry midpoint. Overall, Gulf Development PCL has a GF Score™ of 16/100, reflecting its overall financial health beyond just this single metric.
How does Gulf Development PCL's Operating Margin % compare to CEG and VST?
According to the Utilities - Independent Power Producers industry distribution chart, Gulf Development PCL ranks #182 out of 422 companies for Operating Margin %. This puts Gulf Development PCL in the upper half of its industry. The industry median Operating Margin % is 13.55. Gulf Development PCL's value of 20.55% is 51.7% above this benchmark. While the company's 10-year median is 17.52 vs. the industry median of 13.55, Gulf Development PCL 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 Utilities - Independent Power Producers company?
The median Operating Margin % among Utilities - Independent Power Producers companies is 13.55, based on 422 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. Gulf Development PCL's current Operating Margin % of 20.55% is 51.7% 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 Gulf Development PCL and its competitors. For the Utilities - Independent Power Producers industry, the median Operating Margin % is 13.55 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Gulf Development PCL's current Operating Margin % is 20.55%, which is 17% above median its own 10-year median of 17.52. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Gulf Development PCL stock overvalued right now?
Gulf Development PCL (BKK:GULF) has a current Operating Margin % of 20.55%. The current Operating Margin % is 20.55%, which is 17% above median its 10-year median of 17.52 and 51.7% above the Utilities - Independent Power Producers industry median of 13.55. Gulf Development PCL's overall GF Score™ is 16/100 with 12 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 Gulf Development PCL (BKK:GULF), the current Operating Margin % is 20.55% 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.
Gulf Development PCL is a Thailand-based company mainly involved in the electricity-generating business. The group's principal operations are to generate and sell electricity and steam, store and convert natural gas from liquid to gas, provide satellite services, and operate other businesses in domestic and international markets. It is also involved in the business of renewable energy, such as solar rooftops and biomass energy. The group's reportable segments are: Power business (which generates maximum revenue), Consulting business, Infrastructure business, and Satellite and digital business. Geographically, it derives maximum revenue from Thailand.
16GF Score
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