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.
During the past 13 years, the highest Price to Graham Number ratio of Charles River Laboratories International was 11.84. The lowest was 11.84. And the median was 11.84.
CRL's Price-to-Graham-Number is not ranked *
in the Medical Diagnostics & Research industry.
Industry Median: 2.58 * Ranked among companies with meaningful Price-to-Graham-Number only.
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Charles River Laboratories International (NYSE:CRL) 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.
Charles River Laboratories International's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
219.40
/
N/A
=
N/A
* 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.
Charles River Laboratories International Graham Number Related Terms
Charles River Laboratories International 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.
Charles River Laboratories International Graham Number Chart
Charles River Laboratories International Annual Data
For the Diagnostics & Research subindustry, Charles River Laboratories International'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.
Charles River Laboratories International Price-to-Graham-Number vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Charles River Laboratories International's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Charles River Laboratories International'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.
Charles River Laboratories International (CRL) has a Graham Number of $N/A as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Charles River Laboratories International and its competitors. Over the past decade, Charles River Laboratories International's Graham Number has ranged from 11.84 to 11.84. According to the industry distribution chart, Charles River Laboratories International ranks #999999 out of 71 companies in the Medical Diagnostics & Research industry.
Is Charles River Laboratories International's Graham Number too high?
Charles River Laboratories International's current Graham Number is $N/A. Over the past 10 years, this metric has ranged from a low of 11.84 to a high of 11.84. Based on the distribution chart, Charles River Laboratories International ranks #999999 out of 71 companies in the Medical Diagnostics & Research industry, which is in the bottom quartile relative to peers. Overall, Charles River Laboratories International has a GF Score™ of 70/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Charles River Laboratories International's Graham Number compare to RVTY and QGEN?
According to the Medical Diagnostics & Research industry distribution chart, Charles River Laboratories International ranks #999999 out of 71 companies for Graham Number. This places Charles River Laboratories International in the lower half of its industry. The industry median Graham Number is 2.58. Historically, Charles River Laboratories International's own Graham Number has ranged from 11.84 to 11.84 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 Medical Diagnostics & Research company?
The median Graham Number among Medical Diagnostics & Research companies is 2.58, based on 71 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 Charles River Laboratories International and its competitors. For the Medical Diagnostics & Research industry, the median Graham Number is 2.58 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Charles River Laboratories International's current Graham Number is $N/A. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Charles River Laboratories International stock overvalued right now?
Based on GuruFocus' analysis, Charles River Laboratories International (CRL) is currently considered Modestly Overvalued. The stock's GF Value™ is $194.04, compared to a current price of $219.40 — trading 13.1% above its estimated fair value. The current Graham Number is $N/A. Charles River Laboratories International's overall GF Score™ is 70/100 with 8 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 Charles River Laboratories International (CRL), the current Graham Number is $N/A as of Mar. 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 Charles River Laboratories International (CRL) Overvalued in 2026?
Based on GuruFocus' analysis, Charles River Laboratories International stock appears to be overvalued.
The current stock price of $219.40 is trading 13.1% above its estimated GF Value™ of $194.04.
GuruFocus considers Charles River Laboratories International to be Modestly Overvalued.
Key valuation signals for CRL:
Graham Number: $N/A
GF Value™: $194.04 vs. price of $219.40 (13.1% above fair value)
No single metric tells the full story. See the CRL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Charles River Laboratories International Business Description
Charles River Laboratories was founded in 1947 and is a leading provider of drug discovery and development services. The company's research model & services segment is the leading provider of animal models for laboratory testing, which breeds and delivers animal research models with specific genetic characteristics for preclinical studies around the world. The discovery & safety assessment segment includes services required to take a drug through the early development process, including discovery services. The manufacturing support segment includes microbial solutions, which provides in vitro (non-animal) testing products, biologics testing services, and avian vaccine services.
70GF Score
Get the complete analysis for CRL
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
CRL has been successfully added to your 
