PermRock Royalty TrustPRT +1.75%71 Graham Number is $3.89 as of Mar. 2026, which is 582% above its 10-year median of 0.57. GuruFocus rates PRT with a GF Score™ of 71/100 and a GF Value™ of $2.65 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 607 Oil & Gas companies, PermRock Royalty Trust ranks better than 79.57% 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 PermRock Royalty Trust's Graham Number or its related term are showing as below:
PRT'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.25 Med: 0.57 Max: 1.56
Current: 0.6
During the past 10 years, the highest Price to Graham Number ratio of PermRock Royalty Trust was 1.56. The lowest was 0.25. And the median was 0.57.
PRT's Price-to-Graham-Number is ranked better than 79.57% of 607
companies
in the Oil & Gas industry
Industry Median: 1.05
vs PRT: 0.60
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
PermRock Royalty Trust (NYSE:PRT) 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.
PermRock Royalty Trust's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
2.33
/
3.89
=
0.60
* 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.
PermRock Royalty Trust Graham Number Related Terms
PermRock Royalty Trust Graham Number Historical Data
* 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.
For the Oil & Gas E&P subindustry, PermRock Royalty Trust'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.
PermRock Royalty Trust Price-to-Graham-Number vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, PermRock Royalty Trust's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where PermRock Royalty Trust'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.
PermRock Royalty Trust (PRT) has a Graham Number of $3.89 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on PermRock Royalty Trust and its competitors. This is 582% above median its historical median of 0.57. Over the past decade, PermRock Royalty Trust's Graham Number has ranged from 0.25 to 1.56. According to the industry distribution chart, PermRock Royalty Trust ranks #124 out of 607 companies in the Oil & Gas industry, placing it in the top 20.4%.
Is PermRock Royalty Trust's Graham Number too high?
PermRock Royalty Trust's current Graham Number of $3.89 is 582% above median its 10-year median of 0.57. Over the past 10 years, this metric has ranged from a low of 0.25 to a high of 1.56. The Oil & Gas industry median Graham Number is 1.05. PermRock Royalty Trust's value of $3.89 is 270.5% above this industry median. Based on the distribution chart, PermRock Royalty Trust ranks #124 out of 607 companies in the Oil & Gas industry, which is in the top quartile — a strong position relative to peers. Overall, PermRock Royalty Trust has a GF Score™ of 71/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does PermRock Royalty Trust's Graham Number compare to BATL and SPND?
According to the Oil & Gas industry distribution chart, PermRock Royalty Trust ranks #124 out of 607 companies for Graham Number. This places PermRock Royalty Trust in the top 20% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.05. PermRock Royalty Trust's value of $3.89 is 270.5% above this benchmark. Historically, PermRock Royalty Trust's own Graham Number has ranged from 0.25 to 1.56 over the past decade. While the company's 10-year median is 0.57 vs. the industry median of 1.05, PermRock Royalty Trust 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 Graham Number for an Oil & Gas company?
The median Graham Number among Oil & Gas companies is 1.05, based on 607 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. PermRock Royalty Trust's current Graham Number of $3.89 is 270.5% 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 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 PermRock Royalty Trust and its competitors. For the Oil & Gas industry, the median Graham Number is 1.05 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. PermRock Royalty Trust's current Graham Number is $3.89, which is 582% above median its own 10-year median of 0.57. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PermRock Royalty Trust stock overvalued right now?
Based on GuruFocus' analysis, PermRock Royalty Trust (PRT) is currently considered Modestly Undervalued. The stock's GF Value™ is $2.65, compared to a current price of $2.33 — trading 12.1% below its estimated fair value. The current Graham Number is $3.89, which is 582% above median its 10-year median of 0.57 and 270.5% above the Oil & Gas industry median of 1.05. PermRock Royalty Trust's overall GF Score™ is 71/100 with 3 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 PermRock Royalty Trust (PRT), the current Graham Number is $3.89 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 PermRock Royalty Trust (PRT) Overvalued in 2026?
Based on GuruFocus' analysis, PermRock Royalty Trust stock appears to be undervalued.
The current stock price of $2.33 is trading 12.1% below its estimated GF Value™ of $2.65.
GuruFocus considers PermRock Royalty Trust to be Modestly Undervalued.
Key valuation signals for PRT:
Graham Number: $3.89 (582% above median its 10-year median of 0.57)
GF Value™: $2.65 vs. price of $2.33 (12.1% below fair value)
Industry Position: 270.5% above the Oil & Gas median (#124 of 607)
No single metric tells the full story. See the PRT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PermRock Royalty Trust operates as a statutory trust. Its purpose is to own the Net Profits Interest, to distribute to the Trust unitholders cash that it receives in respect of the Net Profits Interest, and to perform certain administrative functions. The Net Profits Interest entitles the trust to receive the net profits from the sale of oil and natural gas production from the underlying properties of its trustor.
71GF Score
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