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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.
ISX:SONA'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.83 Med: 1.6 Max: 4.99
Current: 1.26
During the past 13 years, the highest Price to Graham Number ratio of PT Sona Topas Tourism Industry Tbk was 4.99. The lowest was 0.83. And the median was 1.60.
ISX:SONA's Price-to-Graham-Number is ranked worse than 51.68% of 505
companies
in the Travel & Leisure industry
Industry Median: 1.23
vs ISX:SONA: 1.26
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
PT Sona Topas Tourism Industry Tbk (ISX:SONA) 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.
PT Sona Topas Tourism Industry Tbk's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
2400.00
/
1,898.45
=
1.26
* 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.
PT Sona Topas Tourism Industry Tbk Graham Number Related Terms
PT Sona Topas Tourism Industry Tbk 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.
PT Sona Topas Tourism Industry Tbk Graham Number Chart
ISX:SONA vs BKNG, ABNB, RCL: Graham Number Comparison
For the Travel Services subindustry, PT Sona Topas Tourism Industry Tbk'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.
PT Sona Topas Tourism Industry Tbk Price-to-Graham-Number vs Travel & Leisure Industry
For the Travel & Leisure industry and Consumer Cyclical sector, PT Sona Topas Tourism Industry Tbk's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where PT Sona Topas Tourism Industry Tbk'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.
PT Sona Topas Tourism Industry Tbk (ISX:SONA) has a Graham Number of Rp1,898.45 as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on PT Sona Topas Tourism Industry Tbk and its competitors. According to the industry distribution chart, PT Sona Topas Tourism Industry Tbk ranks #261 out of 505 companies in the Travel & Leisure industry, placing it in the top 51.7%.
Is PT Sona Topas Tourism Industry Tbk's Graham Number too high?
PT Sona Topas Tourism Industry Tbk's current Graham Number is Rp1,898.45. Based on the distribution chart, PT Sona Topas Tourism Industry Tbk ranks #261 out of 505 companies in the Travel & Leisure industry, which is below the industry midpoint. Overall, PT Sona Topas Tourism Industry Tbk has a GF Score™ of 76/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does PT Sona Topas Tourism Industry Tbk's Graham Number compare to BKNG and ABNB?
According to the Travel & Leisure industry distribution chart, PT Sona Topas Tourism Industry Tbk ranks #261 out of 505 companies for Graham Number. This places PT Sona Topas Tourism Industry Tbk in the lower half of its industry. The industry median Graham Number is 1.23. 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 Travel & Leisure company?
The median Graham Number among Travel & Leisure companies is 1.23, based on 505 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 PT Sona Topas Tourism Industry Tbk and its competitors. For the Travel & Leisure industry, the median Graham Number is 1.23 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. PT Sona Topas Tourism Industry Tbk's current Graham Number is Rp1,898.45. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PT Sona Topas Tourism Industry Tbk stock overvalued right now?
Based on GuruFocus' analysis, PT Sona Topas Tourism Industry Tbk (ISX:SONA) is currently considered Fairly Valued. The stock's GF Value™ is Rp2,544.47, compared to a current price of Rp2,400.00 — trading 5.7% below its estimated fair value. The current Graham Number is Rp1,898.45. PT Sona Topas Tourism Industry Tbk's overall GF Score™ is 76/100 with 2 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 PT Sona Topas Tourism Industry Tbk (ISX:SONA), the current Graham Number is Rp1,898.45 as of Jun. 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 PT Sona Topas Tourism Industry Tbk (ISX:SONA) Overvalued in 2026?
Based on GuruFocus' analysis, PT Sona Topas Tourism Industry Tbk stock appears to be undervalued.
The current stock price of Rp2,400.00 is trading 5.7% below its estimated GF Value™ of Rp2,544.47.
GuruFocus considers PT Sona Topas Tourism Industry Tbk to be Fairly Valued.
Key valuation signals for ISX:SONA:
Graham Number: Rp1,898.45
GF Value™: Rp2,544.47 vs. price of Rp2,400.00 (5.7% below fair value)
No single metric tells the full story. See the ISX:SONA stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PT Sona Topas Tourism Industry Tbk provides domestic and international travel-related services in Indonesia. The company operates through two divisions: Travel and Travel Retail Shops. The company generates the majority of its revenue from the Travel Retail Shop division, which operates retail shops in Bali, Jakarta, Surabaya, Lombok, Medan, and Batam. Travel division includes Selling tours and travel tickets, especially to the domestic market, and handling of related documents and tours. Geographically, the company generates the majority of its revenue from Bali.
76GF Score
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