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PetroEnergy ResourcesPHS:PERC +0.86%94 Graham Number is ₱11.86 as of Mar. 2026, which is 100% below its 10-year median of 0.33. 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 275 Utilities - Independent Power Producers companies, PetroEnergy Resources ranks better than 96.36% on this metric.
Graham Number is a figure that measures a stock's fundamental value by taking into account the company's earnings per share and book value per share. The Graham number is the upper bound of the price range that a defensive investor should pay for the stock. According to the theory, any stock price below the Graham number is considered undervalued, and thus worth investing in.
The historical rank and industry rank for PetroEnergy Resources's Graham Number or its related term are showing as below:
PHS:PERC'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.24 Med: 0.33 Max: 0.89
Current: 0.3
During the past 13 years, the highest Price to Graham Number ratio of PetroEnergy Resources was 0.89. The lowest was 0.24. And the median was 0.33.
PHS:PERC's Price-to-Graham-Number is ranked better than 96.36% of 275
companies
in the Utilities - Independent Power Producers industry
Industry Median: 1.11
vs PHS:PERC: 0.30
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
PetroEnergy Resources (PHS:PERC) Graham Number Explanation
Ben Graham actually did not publish a formula like this. But he wrote in The Intelligent Investor (1948 version) regarding to the criteria for purchases:
Current price should not be more than 15 times average earnings of the past three years.
Current price should not be more than 1.5 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5. (This figure corresponds to 15 times earnings and 1.5 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)
Unlike valuation methods such as DCF or Discounted Earnings, the Graham number does not take growth into the valuation. Unlike the valuation methods based on book value alone, it takes into account the earnings power. Therefore, the Graham Number is a combination of asset valuation and earnings power valuation.
In general, the Graham number is a very conservative way of valuing a stock. It cannot be applied to companies with negative book values.
PetroEnergy Resources's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
3.53
/
11.86
=
0.30
* 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.
Be Aware
Please keep these in mind:
1. Graham Number does not take growth into account. Therefore it underestimates the values of the companies that have good earnings growth. We feel that if the earnings per share grows more than 10% a year, Graham Number underestimates the value.
2. Graham Number punishes the companies that have temporarily low earnings. Therefore, an average of earnings makes more sense in the calculation of Graham Number.
3. Graham Numbers underestimates companies that are light with book.
PetroEnergy Resources Graham Number Related Terms
PetroEnergy Resources Graham Number Historical Data
* Premium members only.
The historical data trend for PetroEnergy Resources's Graham Number 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: Graham Number Comparison
For the Utilities - Independent Power Producers subindustry, PetroEnergy Resources's Price-to-Graham-Number, along with its competitors' market caps and Price-to-Graham-Number 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 Price-to-Graham-Number vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, PetroEnergy Resources's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where PetroEnergy Resources's Price-to-Graham-Number falls into.
* 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 Graham Number of ₱11.86 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on PetroEnergy Resources and its competitors. This is 3494% above median its historical median of 0.33. Over the past decade, PetroEnergy Resources' Graham Number has ranged from 0.24 to 0.89. According to the industry distribution chart, PetroEnergy Resources ranks #10 out of 275 companies in the Utilities - Independent Power Producers industry, placing it in the top 3.6%.
Is PetroEnergy Resources' Graham Number too high?
PetroEnergy Resources' current Graham Number of ₱11.86 is 3494% above median its 10-year median of 0.33. Over the past 10 years, this metric has ranged from a low of 0.24 to a high of 0.89. Based on the distribution chart, PetroEnergy Resources ranks #10 out of 275 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' Graham Number compare to CEG and VST?
According to the Utilities - Independent Power Producers industry distribution chart, PetroEnergy Resources ranks #10 out of 275 companies for Graham Number. This places PetroEnergy Resources in the top 4% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.11. Historically, PetroEnergy Resources' own Graham Number has ranged from 0.24 to 0.89 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Graham Number for an Utilities - Independent Power Producers company?
The median Graham Number among Utilities - Independent Power Producers companies is 1.11, based on 275 companies in the industry. Companies in the top quartile (top 25%) have a Graham Number significantly above this median, while those in the bottom quartile fall well below. However, Graham Number should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Graham Number mean?
A high Graham Number can signal that a stock is expensive relative to its fundamentals. The Graham Number values a company based on its per-share earnings and book value. View historical data on PetroEnergy Resources and its competitors. For the Utilities - Independent Power Producers industry, the median Graham Number is 1.11 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. PetroEnergy Resources's current Graham Number is ₱11.86, which is 3494% above median its own 10-year median of 0.33. 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 Graham Number is ₱11.86, which is 3494% above median its 10-year median of 0.33. 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 Graham Number calculated?
Graham Number is calculated from a company's financial statements. For PetroEnergy Resources (PHS:PERC), the current Graham Number is ₱11.86 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:
Graham Number: ₱11.86 (3494% above median its 10-year median of 0.33)
GF Value™: ₱4.14 vs. price of ₱3.53 (14.7% below fair value)
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
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