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PRTR Group PCLBKK:PRTR +1.20%64 Graham Number is ฿4.72 as of Mar. 2026, which is 100% below its 10-year median of 1.02. GuruFocus rates BKK:PRTR with a GF Score™ of 64/100 and a GF Value™ of ฿4.79 (Significantly Undervalued). The stock has 1 warning sign investors should review. Among 700 Business Services companies, PRTR Group PCL ranks better than 78.86% 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.
As of today (2026-08-15), the stock price of PRTR Group PCL is ฿3.36. PRTR Group PCL's graham number for the quarter that ended in Mar. 2026 was ฿4.72. Therefore, PRTR Group PCL's Price to Graham Number ratio for today is 0.71.
The historical rank and industry rank for PRTR Group PCL's Graham Number or its related term are showing as below:
BKK:PRTR'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.67 Med: 1.02 Max: 2.07
Current: 0.71
During the past 5 years, the highest Price to Graham Number ratio of PRTR Group PCL was 2.07. The lowest was 0.67. And the median was 1.02.
BKK:PRTR's Price-to-Graham-Number is ranked better than 78.86% of 700
companies
in the Business Services industry
Industry Median: 1.165
vs BKK:PRTR: 0.71
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
PRTR Group PCL (BKK:PRTR) 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.
PRTR Group PCL's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
3.36
/
4.72
=
0.71
* 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.
PRTR Group PCL Graham Number Related Terms
PRTR Group PCL Graham Number Historical Data
* Premium members only.
The historical data trend for PRTR Group PCL'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.
BKK:PRTR vs KFY, RHI, TNET: Graham Number Comparison
For the Staffing & Employment Services subindustry, PRTR Group PCL'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.
PRTR Group PCL Price-to-Graham-Number vs Business Services Industry
For the Business Services industry and Industrials sector, PRTR Group PCL's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where PRTR Group PCL'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.
PRTR Group PCL (BKK:PRTR) has a Graham Number of ฿4.72 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on PRTR Group PCL and its competitors. This is 363% above median its historical median of 1.02. Over the past decade, PRTR Group PCL's Graham Number has ranged from 0.67 to 2.07. According to the industry distribution chart, PRTR Group PCL ranks #148 out of 700 companies in the Business Services industry, placing it in the top 21.1%.
Is PRTR Group PCL's Graham Number too high?
PRTR Group PCL's current Graham Number of ฿4.72 is 363% above median its 10-year median of 1.02. Over the past 10 years, this metric has ranged from a low of 0.67 to a high of 2.07. Based on the distribution chart, PRTR Group PCL ranks #148 out of 700 companies in the Business Services industry, which is in the top quartile — a strong position relative to peers. Overall, PRTR Group PCL has a GF Score™ of 64/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does PRTR Group PCL's Graham Number compare to KFY and RHI?
According to the Business Services industry distribution chart, PRTR Group PCL ranks #148 out of 700 companies for Graham Number. This places PRTR Group PCL in the top 21% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.17. Historically, PRTR Group PCL's own Graham Number has ranged from 0.67 to 2.07 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 a Business Services company?
The median Graham Number among Business Services companies is 1.17, based on 700 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 PRTR Group PCL and its competitors. For the Business Services industry, the median Graham Number is 1.17 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. PRTR Group PCL's current Graham Number is ฿4.72, which is 363% above median its own 10-year median of 1.02. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PRTR Group PCL stock overvalued right now?
Based on GuruFocus' analysis, PRTR Group PCL (BKK:PRTR) is currently considered Significantly Undervalued. The stock's GF Value™ is ฿4.79, compared to a current price of ฿3.36 — trading 29.9% below its estimated fair value. The current Graham Number is ฿4.72, which is 363% above median its 10-year median of 1.02. PRTR Group PCL's overall GF Score™ is 64/100 with 1 warning sign 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 PRTR Group PCL (BKK:PRTR), the current Graham Number is ฿4.72 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 PRTR Group PCL (BKK:PRTR) Overvalued in 2026?
Based on GuruFocus' analysis, PRTR Group PCL stock appears to be undervalued.
The current stock price of ฿3.36 is trading 29.9% below its estimated GF Value™ of ฿4.79.
GuruFocus considers PRTR Group PCL to be Significantly Undervalued.
Key valuation signals for BKK:PRTR:
Graham Number: ฿4.72 (363% above median its 10-year median of 1.02)
GF Value™: ฿4.79 vs. price of ฿3.36 (29.9% below fair value)
No single metric tells the full story. See the BKK:PRTR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PRTR Group PCL provides end-to-end human resource services such as HR outsourcing service for companies and organizations; recruitment service for all-level positions that cater to clients' demands; HR technology, online job platform NEXMOVE, and offline and online training service through BLACKSMITH mobile application and website. The company's reportable segments are Recruitment services, Training services, Human resources services and business process outsourcing, HR Platform, and Job Advertising. The majority of revenue is generated from the Human resources service and business process outsourcing segment.
64GF Score
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