Prima Marine PCLBKK:PRM +0.56%95 PB Ratio is 1.60 as of Jul. 03, 2026, which is 13% below its 10-year median of 1.83. GuruFocus rates BKK:PRM with a GF Score™ of 95/100 and a GF Value™ of ฿7.85 (Modestly Overvalued). The stock has 8 warning signs investors should review. Among 923 Oil & Gas companies, Prima Marine PCL ranks worse than 56.55% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-07-03), Prima Marine PCL's share price is ฿9.05. Prima Marine PCL's Book Value per Share for the quarter that ended in Mar. 2026 was ฿5.65. Hence, Prima Marine PCL's PB Ratio of today is 1.60.
Warning Sign:
Prima Marine PCL stock PB Ratio (=1.57) is close to 1-year high of 1.58.
The historical rank and industry rank for Prima Marine PCL's PB Ratio or its related term are showing as below:
BKK:PRM'
s PB Ratio Range Over the Past 10 Years
Min: 1.05 Med: 1.83 Max: 8.84
Current: 1.61
During the past 12 years, Prima Marine PCL's highest PB Ratio was 8.84. The lowest was 1.05. And the median was 1.83.
BKK:PRM's PB Ratio is ranked worse than 56.55% of 923
companies
in the Oil & Gas industry
Industry Median: 1.38
vs BKK:PRM: 1.61
During the past 12 months, Prima Marine PCL's average Book Value Per Share Growth Rate was 9.80% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 8.40% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 11.20% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 20.30% per year.
During the past 12 years, the highest 3-Year average Book Value Per Share Growth Rate of Prima Marine PCL was 83.60% per year. The lowest was 8.40% per year. And the median was 13.90% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Prima Marine PCL PB Ratio Related Terms
Prima Marine PCL PB Ratio Historical Data
* Premium members only.
The historical data trend for Prima Marine PCL's PB Ratio 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.
For the Oil & Gas Midstream subindustry, Prima Marine PCL's PB Ratio, along with its competitors' market caps and PB Ratio 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.
Prima Marine PCL PB Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Prima Marine PCL's PB Ratio distribution charts can be found below:
* The bar in red indicates where Prima Marine PCL's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Prima Marine PCL (BKK:PRM) has a PB Ratio of 1.60 as of Jul. 03, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Prima Marine PCL and its competitors. This is 13% below median its historical median of 1.83. Over the past decade, Prima Marine PCL's PB Ratio has ranged from 1.05 to 8.84. According to the industry distribution chart, Prima Marine PCL ranks #522 out of 923 companies in the Oil & Gas industry, placing it in the top 56.6%.
Is Prima Marine PCL's PB Ratio too high?
Prima Marine PCL's current PB Ratio of 1.60 is 13% below median its 10-year median of 1.83. Over the past 10 years, this metric has ranged from a low of 1.05 to a high of 8.84. The Oil & Gas industry median PB Ratio is 1.38. Prima Marine PCL's value of 1.60 is 15.9% above this industry median. Based on the distribution chart, Prima Marine PCL ranks #522 out of 923 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Prima Marine PCL has a GF Score™ of 95/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Prima Marine PCL's PB Ratio compare to WMB and EPD?
According to the Oil & Gas industry distribution chart, Prima Marine PCL ranks #522 out of 923 companies for PB Ratio. This places Prima Marine PCL in the lower half of its industry. The industry median PB Ratio is 1.38. Prima Marine PCL's value of 1.60 is 15.9% above this benchmark. Historically, Prima Marine PCL's own PB Ratio has ranged from 1.05 to 8.84 over the past decade. While the company's 10-year median is 1.83 vs. the industry median of 1.38, Prima Marine 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 PB Ratio for an Oil & Gas company?
The median PB Ratio among Oil & Gas companies is 1.38, based on 923 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Prima Marine PCL's current PB Ratio of 1.60 is 15.9% 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Prima Marine PCL and its competitors. For the Oil & Gas industry, the median PB Ratio is 1.38 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Prima Marine PCL's current PB Ratio is 1.60, which is 13% below median its own 10-year median of 1.83. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Prima Marine PCL stock overvalued right now?
Based on GuruFocus' analysis, Prima Marine PCL (BKK:PRM) is currently considered Modestly Overvalued. The stock's GF Value™ is ฿7.85, compared to a current price of ฿9.05 — trading 15.3% above its estimated fair value. The current PB Ratio is 1.60, which is 13% below median its 10-year median of 1.83 and 15.9% above the Oil & Gas industry median of 1.38. Prima Marine PCL's overall GF Score™ is 95/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Prima Marine PCL (BKK:PRM), the current PB Ratio is 1.60 as of Jul. 03, 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 Prima Marine PCL (BKK:PRM) Overvalued in 2026?
Based on GuruFocus' analysis, Prima Marine PCL stock appears to be overvalued.
The current stock price of ฿9.05 is trading 15.3% above its estimated GF Value™ of ฿7.85.
GuruFocus considers Prima Marine PCL to be Modestly Overvalued.
Key valuation signals for BKK:PRM:
PB Ratio: 1.60 (13% below median its 10-year median of 1.83)
GF Value™: ฿7.85 vs. price of ฿9.05 (15.3% above fair value)
Industry Position: 15.9% above the Oil & Gas median (#522 of 923)
No single metric tells the full story. See the BKK:PRM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Prima Marine PCL is engaged in the marine transportation of petroleum and chemical products and in providing services that support offshore petroleum exploration and production, along with ship management. The company operates through four segments: marine transportation of petroleum and chemical products; storage of petroleum products; services supporting offshore exploration and production, including transportation of personnel and equipment and accommodation work barges; and ship management and related services such as ship agency, crew recruitment and transportation, operational support, business administration, procurement, marketing, financial consulting, and technical support. The company generates the majority of its revenue from Thailand.
95GF Score
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