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iRhythm HoldingsIRTC -7.53%79 Graham Number is $4.95 as of Jun. 2026, which is 79% below its 10-year median of 24.03. GuruFocus rates IRTC with a GF Score™ of 79/100 and a GF Value™ of $153.77 (Modestly Undervalued). The stock has 1 warning sign investors should review. Among 403 Medical Devices & Instruments companies, iRhythm Holdings ranks worse than 100% 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 (2026-08-17), the stock price of iRhythm Holdings is $116.99. iRhythm Holdings's graham number for the quarter that ended in Jun. 2026 was $4.95. Therefore, iRhythm Holdings's Price to Graham Number ratio for today is 23.62.
The historical rank and industry rank for iRhythm Holdings's Graham Number or its related term are showing as below:
IRTC'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 23.46 Med: 24.03 Max: 25.54
Current: 23.63
During the past 12 years, the highest Price to Graham Number ratio of iRhythm Holdings was 25.54. The lowest was 23.46. And the median was 24.03.
IRTC's Price-to-Graham-Number is ranked worse than 100% of 403
companies
in the Medical Devices & Instruments industry
Industry Median: 1.92
vs IRTC: 23.63
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
iRhythm Holdings (NAS:IRTC) 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.
iRhythm Holdings's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
116.99
/
4.95
=
23.62
* 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.
iRhythm Holdings Graham Number Related Terms
iRhythm Holdings Graham Number Historical Data
* Premium members only.
The historical data trend for iRhythm Holdings'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.
For the Medical Devices subindustry, iRhythm Holdings'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.
iRhythm Holdings Price-to-Graham-Number vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, iRhythm Holdings's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where iRhythm Holdings'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.
iRhythm Holdings (IRTC) has a Graham Number of $4.95 as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on iRhythm Holdings and its competitors. This is 79% below median its historical median of 24.03. Over the past decade, iRhythm Holdings' Graham Number has ranged from 23.46 to 25.54. According to the industry distribution chart, iRhythm Holdings ranks #403 out of 403 companies in the Medical Devices & Instruments industry.
Is iRhythm Holdings' Graham Number too high?
iRhythm Holdings' current Graham Number of $4.95 is 79% below median its 10-year median of 24.03. Over the past 10 years, this metric has ranged from a low of 23.46 to a high of 25.54. The Medical Devices & Instruments industry median Graham Number is 1.92. iRhythm Holdings' value of $4.95 is 157.8% above this industry median. Based on the distribution chart, iRhythm Holdings ranks #403 out of 403 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, iRhythm Holdings has a GF Score™ of 79/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does iRhythm Holdings' Graham Number compare to HAE and ITGR?
According to the Medical Devices & Instruments industry distribution chart, iRhythm Holdings ranks #403 out of 403 companies for Graham Number. This places iRhythm Holdings in the lower half of its industry. The industry median Graham Number is 1.92. iRhythm Holdings' value of $4.95 is 157.8% above this benchmark. Historically, iRhythm Holdings' own Graham Number has ranged from 23.46 to 25.54 over the past decade. While the company's 10-year median is 24.03 vs. the industry median of 1.92, iRhythm Holdings has consistently been above the industry average. 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 1.92, based on 403 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. iRhythm Holdings's current Graham Number of $4.95 is 157.8% above the industry median. 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 iRhythm Holdings and its competitors. For the Medical Devices & Instruments industry, the median Graham Number is 1.92 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. iRhythm Holdings's current Graham Number is $4.95, which is 79% below median its own 10-year median of 24.03. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is iRhythm Holdings stock overvalued right now?
Based on GuruFocus' analysis, iRhythm Holdings (IRTC) is currently considered Modestly Undervalued. The stock's GF Value™ is $153.77, compared to a current price of $116.99 — trading 23.9% below its estimated fair value. The current Graham Number is $4.95, which is 79% below median its 10-year median of 24.03 and 157.8% above the Medical Devices & Instruments industry median of 1.92. iRhythm Holdings' overall GF Score™ is 79/100 with 1 warning sign 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 iRhythm Holdings (IRTC), the current Graham Number is $4.95 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 iRhythm Holdings (IRTC) Overvalued in 2026?
Based on GuruFocus' analysis, iRhythm Holdings stock appears to be undervalued.
The current stock price of $116.99 is trading 23.9% below its estimated GF Value™ of $153.77.
GuruFocus considers iRhythm Holdings to be Modestly Undervalued.
Key valuation signals for IRTC:
Graham Number: $4.95 (79% below median its 10-year median of 24.03)
GF Value™: $153.77 vs. price of $116.99 (23.9% below fair value)
Industry Position: 157.8% above the Medical Devices & Instruments median (#403 of 403)
No single metric tells the full story. See the IRTC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
iRhythm Holdings Inc is a digital healthcare company that creates trusted solutions that detect, predict, and prevent disease. Its principal business is the design, development, and commercialization of device-based technology to provide ambulatory cardiac monitoring services that it believes allow clinicians to diagnose certain arrhythmias quicker and with greater efficiency than other services that rely on traditional technology. Each Zio System combines an FDA-cleared and CE-marked, wire-free, patch-based, 14-day wearable biosensor that continuously records electrocardiogram (ECG) data with a proprietary, FDA-cleared, CE-marked cloud-based data analytic software to help physicians monitor patients and diagnose arrhythmias.
79GF Score
Get the complete analysis for IRTC
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