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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
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 (2026-09-02), the stock price of Airtech Japan is 円1382.00. Airtech Japan's graham number for the quarter that ended in Jun. 2026 was 円1,366.14. Therefore, Airtech Japan's Price to Graham Number ratio for today is 0.72.
The historical rank and industry rank for Airtech Japan's Graham Number or its related term are showing as below:
TSE:6291'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.47 Med: 0.7 Max: 1.09
Current: 1.01
During the past 13 years, the highest Price to Graham Number ratio of Airtech Japan was 1.09. The lowest was 0.47. And the median was 0.70.
TSE:6291's Price-to-Graham-Number is ranked better than 75.06% of 2225
companies
in the Industrial Products industry
Industry Median: 1.75
vs TSE:6291: 1.01
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Airtech Japan (TSE:6291) 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.
Airtech Japan's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
1382.00
/
1,923.56
=
0.72
* 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.
Airtech Japan Graham Number Related Terms
Airtech Japan Graham Number Historical Data
* Premium members only.
The historical data trend for Airtech Japan'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.
TSE:6291 vs VLTO, ZWS, CECO: Graham Number Comparison
For the Pollution & Treatment Controls subindustry, Airtech Japan'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.
Airtech Japan Price-to-Graham-Number vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Airtech Japan's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Airtech Japan'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.
Airtech Japan (TSE:6291) has a Graham Number of 円1,366.14 as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Airtech Japan and its competitors. According to the industry distribution chart, Airtech Japan ranks #555 out of 2225 companies in the Industrial Products industry, placing it in the top 24.9%.
Is Airtech Japan's Graham Number too high?
Airtech Japan's current Graham Number is 円1,366.14. Based on the distribution chart, Airtech Japan ranks #555 out of 2225 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, Airtech Japan has a GF Score™ of 69/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Airtech Japan's Graham Number compare to VLTO and ZWS?
According to the Industrial Products industry distribution chart, Airtech Japan ranks #555 out of 2225 companies for Graham Number. This places Airtech Japan in the top 25% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.75. 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 Industrial Products company?
The median Graham Number among Industrial Products companies is 1.75, based on 2,225 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 Airtech Japan and its competitors. For the Industrial Products industry, the median Graham Number is 1.75 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Airtech Japan's current Graham Number is 円1,366.14. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Airtech Japan stock overvalued right now?
Based on GuruFocus' analysis, Airtech Japan (TSE:6291) is currently considered Significantly Overvalued. The stock's GF Value™ is 円950.38, compared to a current price of 円1,382.00 — trading 45.4% above its estimated fair value. The current Graham Number is 円1,366.14. Airtech Japan's overall GF Score™ is 69/100 with 6 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 Airtech Japan (TSE:6291), the current Graham Number is 円1,366.14 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 Airtech Japan (TSE:6291) Overvalued in 2026?
Based on GuruFocus' analysis, Airtech Japan stock appears to be overvalued.
The current stock price of 円1,382.00 is trading 45.4% above its estimated GF Value™ of 円950.38.
GuruFocus considers Airtech Japan to be Significantly Overvalued.
Key valuation signals for TSE:6291:
Graham Number: 円1,366.14
GF Value™: 円950.38 vs. price of 円1,382.00 (45.4% above fair value)
No single metric tells the full story. See the TSE:6291 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Airtech Japan Ltd is engaged as a manufacturer of clean air system, manufacture and sell clean room, clean bench, and biohazard system. The products of the company include sterile operating room, dust removal air shower, double air shower, and air knife type pass box, Cleanrooms/BSL-3/CPF, Air showers, Clean booths/SS-MAC series/Fan filter units, Clean benches/Biosafety cabinets/Isolators, Infection prevention products, Air curtains/Insect control/Cold storage air curtains.
69GF Score
Get the complete analysis for TSE:6291
Graham Number is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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