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CellSource CoTSE:4880 +1.42%70 Graham Number is 円179.22 as of Apr. 2026, which is 100% below its 10-year median of 7.40. GuruFocus rates TSE:4880 with a GF Score™ of 70/100 and a GF Value™ of 円777.73 (Significantly Undervalued). The stock has 6 warning signs investors should review. Among 261 Biotechnology companies, CellSource Co ranks worse than 52.11% 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 (2026-08-22), the stock price of CellSource Co is 円356.00. CellSource Co's graham number for the quarter that ended in Apr. 2026 was 円179.22. Therefore, CellSource Co's Price to Graham Number ratio for today is 1.99.
The historical rank and industry rank for CellSource Co's Graham Number or its related term are showing as below:
TSE:4880'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 1.89 Med: 7.4 Max: 19.28
Current: 1.99
During the past 9 years, the highest Price to Graham Number ratio of CellSource Co was 19.28. The lowest was 1.89. And the median was 7.40.
TSE:4880's Price-to-Graham-Number is ranked worse than 52.11% of 261
companies
in the Biotechnology industry
Industry Median: 1.9
vs TSE:4880: 1.99
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
CellSource Co (TSE:4880) 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.
CellSource Co's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Apr. 2026 )
=
356.00
/
179.22
=
1.99
* 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.
CellSource Co Graham Number Related Terms
CellSource Co Graham Number Historical Data
* Premium members only.
The historical data trend for CellSource Co'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:4880 vs VRTX, REGN, RVMD: Graham Number Comparison
For the Biotechnology subindustry, CellSource Co'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.
CellSource Co Price-to-Graham-Number vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, CellSource Co's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where CellSource Co'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.
CellSource Co (TSE:4880) has a Graham Number of 円179.22 as of Apr. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on CellSource Co and its competitors. This is 2322% above median its historical median of 7.40. Over the past decade, CellSource Co's Graham Number has ranged from 1.89 to 19.28. According to the industry distribution chart, CellSource Co ranks #136 out of 261 companies in the Biotechnology industry, placing it in the top 52.1%.
Is CellSource Co's Graham Number too high?
CellSource Co's current Graham Number of 円179.22 is 2322% above median its 10-year median of 7.40. Over the past 10 years, this metric has ranged from a low of 1.89 to a high of 19.28. Based on the distribution chart, CellSource Co ranks #136 out of 261 companies in the Biotechnology industry, which is below the industry midpoint. Overall, CellSource Co has a GF Score™ of 70/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CellSource Co's Graham Number compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CellSource Co ranks #136 out of 261 companies for Graham Number. This places CellSource Co in the lower half of its industry. The industry median Graham Number is 1.90. Historically, CellSource Co's own Graham Number has ranged from 1.89 to 19.28 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 Biotechnology company?
The median Graham Number among Biotechnology companies is 1.90, based on 261 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 CellSource Co and its competitors. For the Biotechnology industry, the median Graham Number is 1.90 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CellSource Co's current Graham Number is 円179.22, which is 2322% above median its own 10-year median of 7.40. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CellSource Co stock overvalued right now?
Based on GuruFocus' analysis, CellSource Co (TSE:4880) is currently considered Significantly Undervalued. The stock's GF Value™ is 円777.73, compared to a current price of 円356.00 — trading 54.2% below its estimated fair value. The current Graham Number is 円179.22, which is 2322% above median its 10-year median of 7.40. CellSource Co's overall GF Score™ is 70/100 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 CellSource Co (TSE:4880), the current Graham Number is 円179.22 as of Apr. 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 CellSource Co (TSE:4880) Overvalued in 2026?
Based on GuruFocus' analysis, CellSource Co stock appears to be undervalued.
The current stock price of 円356.00 is trading 54.2% below its estimated GF Value™ of 円777.73.
GuruFocus considers CellSource Co to be Significantly Undervalued.
Key valuation signals for TSE:4880:
Graham Number: 円179.22 (2322% above median its 10-year median of 7.40)
GF Value™: 円777.73 vs. price of 円356.00 (54.2% below fair value)
No single metric tells the full story. See the TSE:4880 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
CellSource Co Ltd is engaged in contract manufacturing of fat-and blood-derived organizations and cells from medical institutions, provision of legal support to medical institutions in the regenerative medicine business. The company is also involved in sales of medical devices, and sales of own-brand cosmetics in the consumer business.
70GF Score
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