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SISB PCLBKK:SISB +0.52%88 PB Ratio is 2.20 as of Aug. 07, 2026, which is 54% below its 10-year median of 4.77. GuruFocus rates BKK:SISB with a GF Score™ of 88/100 and a GF Value™ of ฿35.03 (Significantly Undervalued). The stock has 2 warning signs investors should review. Among 254 Education companies, SISB PCL ranks worse than 66.54% 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 (2026-08-07), SISB PCL's share price is ฿9.75. SISB PCL's Book Value per Share for the quarter that ended in Mar. 2026 was ฿4.43. Hence, SISB PCL's PB Ratio of today is 2.20.
Good Sign:
SISB PCL stock PB Ratio (=2.18) is close to 10-year low of 2.17.
The historical rank and industry rank for SISB PCL's PB Ratio or its related term are showing as below:
BKK:SISB'
s PB Ratio Range Over the Past 10 Years
Min: 2.17 Med: 4.77 Max: 17.82
Current: 2.21
During the past 12 years, SISB PCL's highest PB Ratio was 17.82. The lowest was 2.17. And the median was 4.77.
BKK:SISB's PB Ratio is ranked worse than 66.54% of 254
companies
in the Education industry
Industry Median: 1.41
vs BKK:SISB: 2.21
During the past 12 months, SISB PCL's average Book Value Per Share Growth Rate was 15.10% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 19.90% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 16.90% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 37.10% per year.
During the past 12 years, the highest 3-Year average Book Value Per Share Growth Rate of SISB PCL was 115.70% per year. The lowest was 6.90% per year. And the median was 18.80% 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.
SISB PCL PB Ratio Related Terms
SISB PCL PB Ratio Historical Data
* Premium members only.
The historical data trend for SISB 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 Education & Training Services subindustry, SISB 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.
SISB PCL PB Ratio vs Education Industry
For the Education industry and Consumer Defensive sector, SISB PCL's PB Ratio distribution charts can be found below:
* The bar in red indicates where SISB 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.
SISB PCL's PB Ratio for today is calculated as follows:
* 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.
SISB PCL (BKK:SISB) has a PB Ratio of 2.20 as of Aug. 07, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on SISB PCL and its competitors. This is 54% below median its historical median of 4.77. Over the past decade, SISB PCL's PB Ratio has ranged from 2.17 to 17.82. According to the industry distribution chart, SISB PCL ranks #169 out of 254 companies in the Education industry, placing it in the top 66.5%.
Is SISB PCL's PB Ratio too high?
SISB PCL's current PB Ratio of 2.20 is 54% below median its 10-year median of 4.77. Over the past 10 years, this metric has ranged from a low of 2.17 to a high of 17.82. The Education industry median PB Ratio is 1.41. SISB PCL's value of 2.20 is 56% above this industry median. Based on the distribution chart, SISB PCL ranks #169 out of 254 companies in the Education industry, which is below the industry midpoint. Overall, SISB PCL has a GF Score™ of 88/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does SISB PCL's PB Ratio compare to EDU and TAL?
According to the Education industry distribution chart, SISB PCL ranks #169 out of 254 companies for PB Ratio. This places SISB PCL in the lower half of its industry. The industry median PB Ratio is 1.41. SISB PCL's value of 2.20 is 56% above this benchmark. Historically, SISB PCL's own PB Ratio has ranged from 2.17 to 17.82 over the past decade. While the company's 10-year median is 4.77 vs. the industry median of 1.41, SISB 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 Education company?
The median PB Ratio among Education companies is 1.41, based on 254 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. SISB PCL's current PB Ratio of 2.20 is 56% 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 SISB PCL and its competitors. For the Education industry, the median PB Ratio is 1.41 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SISB PCL's current PB Ratio is 2.20, which is 54% below median its own 10-year median of 4.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SISB PCL stock overvalued right now?
Based on GuruFocus' analysis, SISB PCL (BKK:SISB) is currently considered Significantly Undervalued. The stock's GF Value™ is ฿35.03, compared to a current price of ฿9.75 — trading 72.2% below its estimated fair value. The current PB Ratio is 2.20, which is 54% below median its 10-year median of 4.77 and 56% above the Education industry median of 1.41. SISB PCL's overall GF Score™ is 88/100 with 2 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 SISB PCL (BKK:SISB), the current PB Ratio is 2.20 as of Aug. 07, 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 SISB PCL (BKK:SISB) Overvalued in 2026?
Based on GuruFocus' analysis, SISB PCL stock appears to be undervalued.
The current stock price of ฿9.75 is trading 72.2% below its estimated GF Value™ of ฿35.03.
GuruFocus considers SISB PCL to be Significantly Undervalued.
Key valuation signals for BKK:SISB:
PB Ratio: 2.20 (54% below median its 10-year median of 4.77)
GF Value™: ฿35.03 vs. price of ฿9.75 (72.2% below fair value)
Industry Position: 56% above the Education median (#169 of 254)
No single metric tells the full story. See the BKK:SISB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
SISB PCL is principally engaged in the operation of international schools. Its operations are carried on only in Thailand. It is a provider of the Singapore curriculum for Mathematics and Science, with a focus on English, based on the Programme for International Student Assessment (PISA). It has five campuses in Thailand, which adopt the Singapore curriculum and Cambridge IGCSE A and AS Levels, as well as the International Baccalaureate. It teaches students to be trilingual: English, Thai, and Chinese, in addition to a holistic education to develop students to their fullest potential.
88GF Score
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