Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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.
The historical rank and industry rank for China Isotope & Radiation's Graham Number or its related term are showing as below:
FRA:5IR'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.47 Med: 0.9 Max: 1.62
Current: 0.81
During the past 11 years, the highest Price to Graham Number ratio of China Isotope & Radiation was 1.62. The lowest was 0.47. And the median was 0.90.
FRA:5IR's Price-to-Graham-Number is ranked better than 84.98% of 406
companies
in the Medical Devices & Instruments industry
Industry Median: 1.83
vs FRA:5IR: 0.81
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
China Isotope & Radiation (FRA:5IR) 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.
China Isotope & Radiation's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Dec. 2025 )
=
1.77
/
2.32
=
0.76
* 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.
China Isotope & Radiation Graham Number Related Terms
China Isotope & Radiation 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.
FRA:5IR vs ABT, SYK, MDT: Graham Number Comparison
For the Medical Devices subindustry, China Isotope & Radiation'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.
China Isotope & Radiation Price-to-Graham-Number vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, China Isotope & Radiation's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where China Isotope & Radiation'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.
China Isotope & Radiation (FRA:5IR) has a Graham Number of €2.32 as of Dec. 2025. The Graham Number values a company based on its per-share earnings and book value. View historical data on China Isotope & Radiation and its competitors. According to the industry distribution chart, China Isotope & Radiation ranks #61 out of 406 companies in the Medical Devices & Instruments industry, placing it in the top 15%.
Is China Isotope & Radiation's Graham Number too high?
China Isotope & Radiation's current Graham Number is €2.32. Based on the distribution chart, China Isotope & Radiation ranks #61 out of 406 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, China Isotope & Radiation has a GF Score™ of 92/100, reflecting its overall financial health beyond just this single metric.
How does China Isotope & Radiation's Graham Number compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, China Isotope & Radiation ranks #61 out of 406 companies for Graham Number. This places China Isotope & Radiation in the top 15% of its industry — outperforming the majority of peers. The industry median Graham Number is 1.83. 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 Medical Devices & Instruments company?
The median Graham Number among Medical Devices & Instruments companies is 1.83, based on 406 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 China Isotope & Radiation and its competitors. For the Medical Devices & Instruments industry, the median Graham Number is 1.83 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. China Isotope & Radiation's current Graham Number is €2.32. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is China Isotope & Radiation stock overvalued right now?
China Isotope & Radiation (FRA:5IR) has a current Graham Number of €2.32. The stock's GF Value™ is €1.63, compared to a current price of €1.77 — trading 8.6% above its estimated fair value. The current Graham Number is €2.32. China Isotope & Radiation's overall GF Score™ is 92/100 with 5 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 China Isotope & Radiation (FRA:5IR), the current Graham Number is €2.32 as of Dec. 2025. 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 China Isotope & Radiation (FRA:5IR) Overvalued in 2026?
Based on GuruFocus' analysis, China Isotope & Radiation stock appears to be overvalued.
The current stock price of €1.77 is trading 8.6% above its estimated GF Value™ of €1.63.
Key valuation signals for FRA:5IR:
Graham Number: €2.32
GF Value™: €1.63 vs. price of €1.77 (8.6% above fair value)
No single metric tells the full story. See the FRA:5IR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
China Isotope & Radiation Corp is a Chinese company. It has five operating segments: (1) nuclear medicine; (2) radioactive source products; (3) irradiation; (4) nuclear medical equipment and related services; and (5) other businesses. Nuclear medicines: manufacturing and sale of a range of imaging diagnostic and therapeutic radio pharmaceuticals imaging, UBT diagnostic kits and test analysers and other products. Its radioactive source products segment involves the sale of medical and industrial radioactive source products and technical services. The company's operations are carried out and a majority of its customers are located in the PRC.
92GF Score
Get the complete analysis for FRA:5IR
Graham Number is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
FRA:5IR has been successfully added to your 
