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.
PetroEnergy ResourcesPHS:PERC +0.86%94 Operating Margin % is 44.65% as of Mar. 2026, which is 13% above its 10-year median of 39.53. GuruFocus rates PHS:PERC with a GF Score™ of 94/100 and a GF Value™ of ₱4.14 (Modestly Undervalued). The stock has 10 warning signs investors should review. Among 421 Utilities - Independent Power Producers companies, PetroEnergy Resources ranks better than 76.96% on this metric.
PetroEnergy Resources Corp operating margin has been in a 5-year decline. The average rate of decline per year is -5.2%.
The historical rank and industry rank for PetroEnergy Resources's Operating Margin % or its related term are showing as below:
PHS:PERC'
s Operating Margin % Range Over the Past 10 Years
Min: 30.79 Med: 39.53 Max: 44.64
Current: 31.01
PHS:PERC's Operating Margin % is ranked better than 76.96% of 421
companies
in the Utilities - Independent Power Producers industry
Industry Median: 13.47
vs PHS:PERC: 31.01
PetroEnergy Resources's 5-Year Average Operating Margin % Growth Rate was -5.20% per year.
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.
PetroEnergy Resources Operating Margin % Related Terms
PetroEnergy Resources Operating Margin % Historical Data
* Premium members only.
The historical data trend for PetroEnergy Resources'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.
PHS:PERC vs CEG, VST, NRG: Operating Margin % Comparison
For the Utilities - Independent Power Producers subindustry, PetroEnergy Resources'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.
PetroEnergy Resources Operating Margin % vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, PetroEnergy Resources's Operating Margin % distribution charts can be found below:
* The bar in red indicates where PetroEnergy Resources'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.
PetroEnergy Resources'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.
PetroEnergy Resources (PHS:PERC) has a Operating Margin % of 44.65% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on PetroEnergy Resources and its competitors. This is 13% above median its historical median of 39.53. Over the past decade, PetroEnergy Resources' Operating Margin % has ranged from 30.79 to 44.64. According to the industry distribution chart, PetroEnergy Resources ranks #97 out of 421 companies in the Utilities - Independent Power Producers industry, placing it in the top 23%.
Is PetroEnergy Resources' Operating Margin % too high?
PetroEnergy Resources' current Operating Margin % of 44.65% is 13% above median its 10-year median of 39.53. Over the past 10 years, this metric has ranged from a low of 30.79 to a high of 44.64. The Utilities - Independent Power Producers industry median Operating Margin % is 13.47. PetroEnergy Resources' value of 44.65% is 231.5% above this industry median. Based on the distribution chart, PetroEnergy Resources ranks #97 out of 421 companies in the Utilities - Independent Power Producers industry, which is in the top quartile — a strong position relative to peers. Overall, PetroEnergy Resources has a GF Score™ of 94/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does PetroEnergy Resources' Operating Margin % compare to CEG and VST?
According to the Utilities - Independent Power Producers industry distribution chart, PetroEnergy Resources ranks #97 out of 421 companies for Operating Margin %. This places PetroEnergy Resources in the top 23% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 13.47. PetroEnergy Resources' value of 44.65% is 231.5% above this benchmark. Historically, PetroEnergy Resources' own Operating Margin % has ranged from 30.79 to 44.64 over the past decade. While the company's 10-year median is 39.53 vs. the industry median of 13.47, PetroEnergy Resources 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 13.47, based on 421 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. PetroEnergy Resources's current Operating Margin % of 44.65% is 231.5% 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 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 PetroEnergy Resources and its competitors. For the Utilities - Independent Power Producers industry, the median Operating Margin % is 13.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. PetroEnergy Resources's current Operating Margin % is 44.65%, which is 13% above median its own 10-year median of 39.53. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PetroEnergy Resources stock overvalued right now?
Based on GuruFocus' analysis, PetroEnergy Resources (PHS:PERC) is currently considered Modestly Undervalued. The stock's GF Value™ is ₱4.14, compared to a current price of ₱3.53 — trading 14.7% below its estimated fair value. The current Operating Margin % is 44.65%, which is 13% above median its 10-year median of 39.53 and 231.5% above the Utilities - Independent Power Producers industry median of 13.47. PetroEnergy Resources' overall GF Score™ is 94/100 with 10 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 PetroEnergy Resources (PHS:PERC), the current Operating Margin % is 44.65% 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 PetroEnergy Resources (PHS:PERC) Overvalued in 2026?
Based on GuruFocus' analysis, PetroEnergy Resources stock appears to be undervalued.
The current stock price of ₱3.53 is trading 14.7% below its estimated GF Value™ of ₱4.14.
GuruFocus considers PetroEnergy Resources to be Modestly Undervalued.
Key valuation signals for PHS:PERC:
Operating Margin %: 44.65% (13% above median its 10-year median of 39.53)
GF Value™: ₱4.14 vs. price of ₱3.53 (14.7% below fair value)
Industry Position: 231.5% above the Utilities - Independent Power Producers median (#97 of 421)
No single metric tells the full story. See the PHS:PERC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PetroEnergy Resources Corp is a Philippines-based company engaged in oil exploration and development and mining activities. The company's segments include Oil production, Geothermal energy, Solar energy, Wind energy, and the other activities segment. The Oil production segment is engaged in oil and mineral exploration, development, and production. The Geothermal energy segment develops and operates geothermal steam fields and power plants. The Solar Energy segment carries out solar energy operations. Other activities pertain to research and investment activities. The wind energy segment carries out wind energy operations of the Group. The company generates the majority of its revenue from the Solar Energy segment.
94GF Score
Get the complete analysis for PHS:PERC
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
PHS:PERC has been successfully added to your 
