ISBA (Isabella Bank) E10: $2.42 (As of Mar. 2026)


ISBA Isabella Bank Corp ISBA
66 GF Score
Price $39.33
GF Value $28.30
Valuation Significantly Overvalued
! 3 Warning Signs
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What is Isabella Bank E10?

Isabella Bank ISBA -1.35% 66 E10 is $2.42 as of Mar. 2026. GuruFocus rates ISBA with a GF Score™ of 66/100 and a GF Value™ of $28.30 (Significantly Overvalued). The stock has 3 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Isabella Bank's adjusted earnings per share data for the three months ended in Mar. 2026 was $0.680. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $2.42 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Isabella Bank's average E10 Growth Rate was 3.90% per year. During the past 3 years, the average E10 Growth Rate was 2.70% per year. During the past 5 years, the average E10 Growth Rate was 5.90% per year. During the past 10 years, the average E10 Growth Rate was 6.10% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Isabella Bank was 9.20% per year. The lowest was 1.50% per year. And the median was 5.40% per year.

As of today (2026-06-25), Isabella Bank's current stock price is $39.33. Isabella Bank's E10 for the quarter that ended in Mar. 2026 was $2.42. Isabella Bank's Shiller PE Ratio of today is 16.25.

During the past 13 years, the highest Shiller PE Ratio of Isabella Bank was 23.97. The lowest was 7.79. And the median was 13.01.


Isabella Bank  (NAS:ISBA) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Isabella Bank's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=39.33/2.42
=16.25

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Isabella Bank was 23.97. The lowest was 7.79. And the median was 13.01.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Isabella Bank E10 Related Terms


Isabella Bank E10 Historical Data

* Premium members only.

The historical data trend for Isabella Bank's E10 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.

Isabella Bank E10 Chart

Isabella Bank Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.96 2.18 2.28 2.30 2.36

Isabella Bank Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 2.33 2.34 2.36 2.36 2.42

ISBA vs CSHX, BRBS, NASB: E10 Comparison

For the Banks - Regional subindustry, Isabella Bank's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio 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 Shiller PE Ratio vs Banks Industry

For the Banks industry and Financial Services sector, Isabella Bank's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Isabella Bank's Shiller PE Ratio falls into.


ISBA
66GF Score
Isabella Bank Corp ISBA
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Isabella Bank E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Isabella Bank's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.68/330.2130*330.2130
=0.680

Current CPI (Mar. 2026) = 330.2130.

Isabella Bank Quarterly Data

per share eps CPI Adj_EPS
201606 0.430 241.018 0.589
201609 0.450 241.428 0.615
201612 0.480 241.432 0.657
201703 0.390 243.801 0.528
201706 0.480 244.955 0.647
201709 0.440 246.819 0.589
201712 0.340 246.524 0.455
201803 0.430 249.554 0.569
201806 0.410 251.989 0.537
201809 0.460 252.439 0.602
201812 0.440 251.233 0.578
201903 0.430 254.202 0.559
201906 0.520 256.143 0.670
201909 0.550 256.759 0.707
201912 0.110 256.974 0.141
202003 0.380 258.115 0.486
202006 0.520 257.797 0.666
202009 0.540 260.280 0.685
202012 -0.100 260.474 -0.127
202103 0.670 264.877 0.835
202106 0.570 271.696 0.693
202109 0.580 274.310 0.698
202112 0.630 278.802 0.746
202203 0.620 287.504 0.712
202206 0.690 296.311 0.769
202209 0.770 296.808 0.857
202212 0.830 296.797 0.923
202303 0.700 301.836 0.766
202306 0.610 305.109 0.660
202309 0.580 307.789 0.622
202312 0.510 306.746 0.549
202403 0.420 312.332 0.444
202406 0.460 314.175 0.483
202409 0.440 315.301 0.461
202412 0.540 315.605 0.565
202503 0.530 319.799 0.547
202506 0.680 322.561 0.696
202509 0.710 324.800 0.722
202512 0.640 324.054 0.652
202603 0.680 330.213 0.680

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of $2.42 mean?
Isabella Bank (ISBA) has a E10 of $2.42 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Isabella Bank and its competitors.
Is Isabella Bank's E10 too high?
Isabella Bank's current E10 is $2.42. Overall, Isabella Bank has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Isabella Bank's E10 compare to CSHX and BRBS?
Isabella Bank's E10 of $2.42 can be compared against companies in the Banks industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for a Banks company?
A good E10 depends on the Banks industry context. However, E10 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 E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Isabella Bank and its competitors. Isabella Bank's current E10 is $2.42. 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 $28.30, compared to a current price of $39.33 — trading 39% above its estimated fair value. The current E10 is $2.42. Isabella Bank's overall GF Score™ is 66/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Isabella Bank (ISBA), the current E10 is $2.42 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 $39.33 is trading 39% above its estimated GF Value™ of $28.30. GuruFocus considers Isabella Bank to be Significantly Overvalued.

Key valuation signals for ISBA:

  • E10: $2.42
  • GF Value™: $28.30 vs. price of $39.33 (39% above fair value)
  • GF Score™: 66/100 with 3 warning signs

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 Business Description

Address 401 North Main Street, Mount Pleasant, MI, USA, 48858
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.
66GF Score

Get the complete analysis for ISBA

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$39.33
Price
$28.30
GF Value