ISBA (Isabella Bank) Cyclically Adjusted PB Ratio: 1.23 (As of Jul. 12, 2026) — 32% Above Median


ISBA Isabella Bank Corp ISBA
56 GF Score
Price $39.12
GF Value $28.58
Valuation Significantly Overvalued
! 3 Warning Signs
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What is Isabella Bank Cyclically Adjusted PB Ratio?

Isabella Bank ISBA +0.18% 56 Cyclically Adjusted PB Ratio is 1.23 as of Jul. 12, 2026, which is 32% above its 10-year median of 0.93. GuruFocus rates ISBA with a GF Score™ of 56/100 and a GF Value™ of $28.58 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 1,303 Banks companies, Isabella Bank ranks better than 52.03% on this metric.

As of today (2026-07-12), Isabella Bank's current share price is $39.12. Isabella Bank's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $31.88. Isabella Bank's Cyclically Adjusted PB Ratio for today is 1.23.

The historical rank and industry rank for Isabella Bank's Cyclically Adjusted PB Ratio or its related term are showing as below:

ISBA' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.59   Med: 0.93   Max: 1.8
Current: 1.23

During the past years, Isabella Bank's highest Cyclically Adjusted PB Ratio was 1.80. The lowest was 0.59. And the median was 0.93.

ISBA's Cyclically Adjusted PB Ratio is ranked better than
52.03% of 1303 companies
in the Banks industry
Industry Median: 1.25 vs ISBA: 1.23

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Isabella Bank's adjusted book value per share data for the three months ended in Mar. 2026 was $32.477. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $31.88 for the trailing ten years ended in Mar. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Isabella Bank  (NAS:ISBA) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Isabella Bank Cyclically Adjusted PB Ratio Related Terms


Isabella Bank Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Isabella Bank's Cyclically Adjusted PB Ratio 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 Cyclically Adjusted PB Ratio Chart

Isabella Bank Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.93 0.81 0.72 0.85 1.60

Isabella Bank Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted PB Ratio 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 0.76 0.97 1.12 1.60 1.43

ISBA vs NASB, FUNC, VLNT: Cyclically Adjusted PB Ratio Comparison

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

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

* The bar in red indicates where Isabella Bank's Cyclically Adjusted PB Ratio falls into.


ISBA
56GF Score
Isabella Bank Corp ISBA
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Isabella Bank Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Isabella Bank's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=39.12/31.88
=1.23

* 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's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 is calculated as:

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

Adj_Book=Book Value per Share/CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=32.477/330.2130*330.2130
=32.477

Current CPI (Mar. 2026) = 330.2130.

Isabella Bank Quarterly Data

Book Value per Share CPI Adj_Book
201606 24.959 241.018 34.196
201609 24.988 241.428 34.177
201612 24.105 241.432 32.969
201703 24.415 243.801 33.069
201706 24.885 244.955 33.546
201709 25.097 246.819 33.577
201712 24.905 246.524 33.360
201803 24.290 249.554 32.141
201806 24.260 251.989 31.791
201809 24.122 252.439 31.554
201812 24.894 251.233 32.720
201903 25.648 254.202 33.317
201906 26.417 256.143 34.056
201909 26.903 256.759 34.599
201912 26.659 256.974 34.257
202003 27.358 258.115 35.000
202006 27.784 257.797 35.589
202009 27.933 260.280 35.438
202012 27.537 260.474 34.910
202103 27.652 264.877 34.473
202106 28.101 271.696 34.153
202109 28.296 274.310 34.063
202112 28.016 278.802 33.182
202203 25.963 287.504 29.820
202206 25.246 296.311 28.134
202209 23.349 296.808 25.977
202212 24.634 296.797 27.408
202303 25.641 301.836 28.052
202306 25.134 305.109 27.202
202309 25.173 307.789 27.007
202312 27.594 306.746 29.705
202403 27.422 312.332 28.992
202406 27.690 314.175 29.104
202409 29.300 315.301 30.686
202412 28.876 315.605 30.213
202503 29.098 319.799 30.046
202506 29.951 322.561 30.662
202509 30.937 324.800 31.453
202512 31.603 324.054 32.204
202603 32.477 330.213 32.477

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

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.

What does a Cyclically Adjusted PB Ratio of 1.23 mean?
Isabella Bank (ISBA) has a Cyclically Adjusted PB Ratio of 1.23 as of Jul. 12, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Isabella Bank and its competitors. This is 32% above median its historical median of 0.93. Over the past decade, Isabella Bank's Cyclically Adjusted PB Ratio has ranged from 0.59 to 1.80. According to the industry distribution chart, Isabella Bank ranks #625 out of 1303 companies in the Banks industry, placing it in the top 48%.
Is Isabella Bank's Cyclically Adjusted PB Ratio too high?
Isabella Bank's current Cyclically Adjusted PB Ratio of 1.23 is 32% above median its 10-year median of 0.93. Over the past 10 years, this metric has ranged from a low of 0.59 to a high of 1.80. The Banks industry median Cyclically Adjusted PB Ratio is 1.25. Isabella Bank's value of 1.23 is 1.6% below this industry median. Based on the distribution chart, Isabella Bank ranks #625 out of 1303 companies in the Banks industry, which is above the industry midpoint. Overall, Isabella Bank has a GF Score™ of 56/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Isabella Bank's Cyclically Adjusted PB Ratio compare to NASB and FUNC?
According to the Banks industry distribution chart, Isabella Bank ranks #625 out of 1303 companies for Cyclically Adjusted PB Ratio. This puts Isabella Bank in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.25. Isabella Bank's value of 1.23 is 1.6% below this benchmark. Historically, Isabella Bank's own Cyclically Adjusted PB Ratio has ranged from 0.59 to 1.80 over the past decade. While the company's 10-year median is 0.93 vs. the industry median of 1.25, Isabella Bank has consistently been below 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 Cyclically Adjusted PB Ratio for a Banks company?
The median Cyclically Adjusted PB Ratio among Banks companies is 1.25, based on 1,303 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Isabella Bank's current Cyclically Adjusted PB Ratio of 1.23 is 1.6% below 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Isabella Bank and its competitors. For the Banks industry, the median Cyclically Adjusted PB Ratio is 1.25 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Isabella Bank's current Cyclically Adjusted PB Ratio is 1.23, which is 32% above median its own 10-year median of 0.93. 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 Cyclically Adjusted PB Ratio is 1.23, which is 32% above median its 10-year median of 0.93 and 1.6% below the Banks industry median of 1.25. Isabella Bank's overall GF Score™ is 56/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Isabella Bank (ISBA), the current Cyclically Adjusted PB Ratio is 1.23 as of Jul. 12, 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:

  • Cyclically Adjusted PB Ratio: 1.23 (32% above median its 10-year median of 0.93)
  • GF Value™: $28.58 vs. price of $39.12 (36.9% above fair value)
  • GF Score™: 56/100 with 3 warning signs
  • Industry Position: 1.6% below the Banks median (#625 of 1303)

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.
56GF Score

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

$39.12
Price
$28.58
GF Value