Isabella BankISBA +0.18%53 Graham Number is $38.68 as of Mar. 2026, which is 4735% above its 10-year median of 0.80. GuruFocus rates ISBA with a GF Score™ of 53/100 and a GF Value™ of $28.58 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 1,438 Banks companies, Isabella Bank ranks worse than 74.55% 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 (2026-07-12), the stock price of Isabella Bank is $39.12. Isabella Bank's graham number for the quarter that ended in Mar. 2026 was $38.68. Therefore, Isabella Bank's Price to Graham Number ratio for today is 1.01.
The historical rank and industry rank for Isabella Bank's Graham Number or its related term are showing as below:
ISBA'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.59 Med: 0.8 Max: 1.34
Current: 1.01
During the past 13 years, the highest Price to Graham Number ratio of Isabella Bank was 1.34. The lowest was 0.59. And the median was 0.80.
ISBA's Price-to-Graham-Number is ranked worse than 74.55% of 1438
companies
in the Banks industry
Industry Median: 0.8
vs ISBA: 1.01
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Isabella Bank (NAS:ISBA) 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.
Isabella Bank's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
39.12
/
38.68
=
1.01
* 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.
Isabella Bank Graham Number Related Terms
Isabella Bank Graham Number Historical Data
* Premium members only.
The historical data trend for Isabella Bank'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.
ISBA vs NASB, FUNC, VLNT: Graham Number Comparison
For the Banks - Regional subindustry, Isabella Bank'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.
Isabella Bank Price-to-Graham-Number vs Banks Industry
For the Banks industry and Financial Services sector, Isabella Bank's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Isabella Bank'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.
Isabella Bank (ISBA) has a Graham Number of $38.68 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Isabella Bank and its competitors. This is 4735% above median its historical median of 0.80. Over the past decade, Isabella Bank's Graham Number has ranged from 0.59 to 1.34. According to the industry distribution chart, Isabella Bank ranks #1072 out of 1438 companies in the Banks industry, placing it in the top 74.5%.
Is Isabella Bank's Graham Number too high?
Isabella Bank's current Graham Number of $38.68 is 4735% above median its 10-year median of 0.80. Over the past 10 years, this metric has ranged from a low of 0.59 to a high of 1.34. The Banks industry median Graham Number is 0.80. Isabella Bank's value of $38.68 is 4735% above this industry median. Based on the distribution chart, Isabella Bank ranks #1072 out of 1438 companies in the Banks industry, which is below the industry midpoint. Overall, Isabella Bank has a GF Score™ of 53/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Isabella Bank's Graham Number compare to NASB and FUNC?
According to the Banks industry distribution chart, Isabella Bank ranks #1072 out of 1438 companies for Graham Number. This places Isabella Bank in the lower half of its industry. The industry median Graham Number is 0.80. Isabella Bank's value of $38.68 is 4735% above this benchmark. Historically, Isabella Bank's own Graham Number has ranged from 0.59 to 1.34 over the past decade. While the company's 10-year median is 0.80 vs. the industry median of 0.80, Isabella Bank 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 Banks company?
The median Graham Number among Banks companies is 0.80, based on 1,438 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. Isabella Bank's current Graham Number of $38.68 is 4735% 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 Isabella Bank and its competitors. For the Banks industry, the median Graham Number is 0.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Isabella Bank's current Graham Number is $38.68, which is 4735% above median its own 10-year median of 0.80. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Isabella Bank stock overvalued right now?
Based on GuruFocus' analysis, Isabella Bank (ISBA) is currently considered Significantly Overvalued. The stock's GF Value™ is $28.58, compared to a current price of $39.12 — trading 36.9% above its estimated fair value. The current Graham Number is $38.68, which is 4735% above median its 10-year median of 0.80 and 4735% above the Banks industry median of 0.80. Isabella Bank's overall GF Score™ is 53/100 with 3 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 Isabella Bank (ISBA), the current Graham Number is $38.68 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 Isabella Bank (ISBA) Overvalued in 2026?
Based on GuruFocus' analysis, Isabella Bank stock appears to be overvalued.
The current stock price of $39.12 is trading 36.9% above its estimated GF Value™ of $28.58.
GuruFocus considers Isabella Bank to be Significantly Overvalued.
Key valuation signals for ISBA:
Graham Number: $38.68 (4735% above median its 10-year median of 0.80)
GF Value™: $28.58 vs. price of $39.12 (36.9% above fair value)
Industry Position: 4735% above the Banks median (#1072 of 1438)
No single metric tells the full story. See the ISBA stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Isabella Bank Corp is a U.S based financial service holding company. It offers banking services to businesses, institutions, and individuals. The company's lending activities include loans made according to commercial and agricultural operating and real estate purposes, residential real estate loans, and consumer loans. Deposit services offered include checking accounts, savings accounts, certificates of deposit, direct deposits, cash management services, mobile and internet banking, electronic bill pay services and automated teller machines. It also offers full-service trust and brokerage services.
53GF Score
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