FIBK (First Interstate BancSystem) Cyclically Adjusted PB Ratio: 1.10 (As of Aug. 18, 2026) — 24% Below Median

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FIBK First Interstate BancSystem Inc FIBK
62 GF Score
Price $38.90
GF Value $32.89
Valuation Modestly Overvalued
! 6 Warning Signs
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What is First Interstate BancSystem Cyclically Adjusted PB Ratio?

First Interstate BancSystem FIBK -0.69% 62 Cyclically Adjusted PB Ratio is 1.10 as of Aug. 18, 2026, which is 24% below its 10-year median of 1.45. GuruFocus rates FIBK with a GF Score™ of 62/100 and a GF Value™ of $32.89 (Modestly Overvalued). The stock has 6 warning signs investors should review. Among 1,284 Banks companies, First Interstate BancSystem ranks better than 60.67% on this metric.

As of today (2026-08-18), First Interstate BancSystem's current share price is $38.90. First Interstate BancSystem's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was $35.32. First Interstate BancSystem's Cyclically Adjusted PB Ratio for today is 1.10.

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

FIBK' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.71   Med: 1.45   Max: 2.54
Current: 1.1

During the past years, First Interstate BancSystem's highest Cyclically Adjusted PB Ratio was 2.54. The lowest was 0.71. And the median was 1.45.

FIBK's Cyclically Adjusted PB Ratio is ranked better than
60.67% of 1284 companies
in the Banks industry
Industry Median: 1.3 vs FIBK: 1.10

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.

First Interstate BancSystem's adjusted book value per share data for the three months ended in Jun. 2026 was $34.774. 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 $35.32 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


First Interstate BancSystem  (NAS:FIBK) 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.


First Interstate BancSystem Cyclically Adjusted PB Ratio Related Terms


First Interstate BancSystem Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for First Interstate BancSystem'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.

First Interstate BancSystem Cyclically Adjusted PB Ratio Chart

First Interstate BancSystem 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 1.51 1.31 0.99 0.99 1.02

First Interstate BancSystem Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 0.86 0.94 1.02 0.96 1.09

FIBK vs NIC, FFBC, CBU: Cyclically Adjusted PB Ratio Comparison

For the Banks - Regional subindustry, First Interstate BancSystem'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.


First Interstate BancSystem Cyclically Adjusted PB Ratio vs Banks Industry

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

* The bar in red indicates where First Interstate BancSystem's Cyclically Adjusted PB Ratio falls into.


FIBK
62GF Score
First Interstate BancSystem Inc FIBK
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

First Interstate BancSystem 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.

First Interstate BancSystem's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=38.90/35.32
=1.10

* 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.

First Interstate BancSystem's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, First Interstate BancSystem's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=34.774/333.9520*333.9520
=34.774

Current CPI (Jun. 2026) = 333.9520.

First Interstate BancSystem Quarterly Data

Book Value per Share CPI Adj_Book
201609 21.892 241.428 30.282
201612 21.871 241.432 30.252
201703 22.187 243.801 30.391
201706 24.898 244.955 33.944
201709 25.142 246.819 34.018
201712 25.282 246.524 34.248
201803 25.263 249.554 33.807
201806 25.692 251.989 34.049
201809 27.296 252.439 36.110
201812 27.942 251.233 37.142
201903 28.551 254.202 37.508
201906 29.873 256.143 38.948
201909 30.394 256.759 39.532
201912 30.866 256.974 40.112
202003 30.302 258.115 39.205
202006 30.961 257.797 40.107
202009 31.333 260.280 40.202
202012 31.561 260.474 40.464
202103 31.069 264.877 39.171
202106 31.666 271.696 38.922
202109 31.894 274.310 38.829
202112 31.939 278.802 38.257
202203 31.425 287.504 36.502
202206 30.363 296.311 34.220
202209 28.774 296.808 32.375
202212 29.431 296.797 33.115
202303 30.276 301.836 33.497
202306 29.720 305.109 32.530
202309 29.383 307.789 31.881
202312 31.051 306.746 33.805
202403 30.694 312.332 32.819
202406 30.846 314.175 32.788
202409 32.199 315.301 34.104
202412 31.591 315.605 33.427
202503 32.040 319.799 33.458
202506 32.628 322.561 33.780
202509 33.171 324.800 34.106
202512 34.093 324.054 35.134
202603 34.465 330.213 34.855
202606 34.774 333.952 34.774

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 1.10 mean?
First Interstate BancSystem (FIBK) has a Cyclically Adjusted PB Ratio of 1.10 as of Aug. 18, 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 First Interstate BancSystem and its competitors. This is 24% below median its historical median of 1.45. Over the past decade, First Interstate BancSystem's Cyclically Adjusted PB Ratio has ranged from 0.71 to 2.54. According to the industry distribution chart, First Interstate BancSystem ranks #505 out of 1284 companies in the Banks industry, placing it in the top 39.3%.
Is First Interstate BancSystem's Cyclically Adjusted PB Ratio too high?
First Interstate BancSystem's current Cyclically Adjusted PB Ratio of 1.10 is 24% below median its 10-year median of 1.45. Over the past 10 years, this metric has ranged from a low of 0.71 to a high of 2.54. The Banks industry median Cyclically Adjusted PB Ratio is 1.30. First Interstate BancSystem's value of 1.10 is 15.4% below this industry median. Based on the distribution chart, First Interstate BancSystem ranks #505 out of 1284 companies in the Banks industry, which is above the industry midpoint. Overall, First Interstate BancSystem has a GF Score™ of 62/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does First Interstate BancSystem's Cyclically Adjusted PB Ratio compare to NIC and FFBC?
According to the Banks industry distribution chart, First Interstate BancSystem ranks #505 out of 1284 companies for Cyclically Adjusted PB Ratio. This puts First Interstate BancSystem in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.30. First Interstate BancSystem's value of 1.10 is 15.4% below this benchmark. Historically, First Interstate BancSystem's own Cyclically Adjusted PB Ratio has ranged from 0.71 to 2.54 over the past decade. While the company's 10-year median is 1.45 vs. the industry median of 1.30, First Interstate BancSystem 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 1.30, based on 1,284 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. First Interstate BancSystem's current Cyclically Adjusted PB Ratio of 1.10 is 15.4% 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 First Interstate BancSystem and its competitors. For the Banks industry, the median Cyclically Adjusted PB Ratio is 1.30 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. First Interstate BancSystem's current Cyclically Adjusted PB Ratio is 1.10, which is 24% below median its own 10-year median of 1.45. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is First Interstate BancSystem stock overvalued right now?
Based on GuruFocus' analysis, First Interstate BancSystem (FIBK) is currently considered Modestly Overvalued. The stock's GF Value™ is $32.89, compared to a current price of $38.90 — trading 18.3% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.10, which is 24% below median its 10-year median of 1.45 and 15.4% below the Banks industry median of 1.30. First Interstate BancSystem's overall GF Score™ is 62/100 with 6 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 First Interstate BancSystem (FIBK), the current Cyclically Adjusted PB Ratio is 1.10 as of Aug. 18, 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 First Interstate BancSystem (FIBK) Overvalued in 2026?

Based on GuruFocus' analysis, First Interstate BancSystem stock appears to be overvalued. The current stock price of $38.90 is trading 18.3% above its estimated GF Value™ of $32.89. GuruFocus considers First Interstate BancSystem to be Modestly Overvalued.

Key valuation signals for FIBK:

  • Cyclically Adjusted PB Ratio: 1.10 (24% below median its 10-year median of 1.45)
  • GF Value™: $32.89 vs. price of $38.90 (18.3% above fair value)
  • GF Score™: 62/100 with 6 warning signs
  • Industry Position: 15.4% below the Banks median (#505 of 1284)

No single metric tells the full story. See the FIBK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


First Interstate BancSystem Business Description

Other Exchanges 4FB:Germany
Address 401 North 31st Street, Billings, MT, USA, 59101
First Interstate BancSystem Inc is a financial holding company. It is the parent company of First Interstate Bank, a community bank offering a range of internet, mobile, and other banking and financial services throughout Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. It delivers a range of financial products and services to both retail and commercial customers in industries like agriculture, construction, education, energy, governmental services, healthcare, mining, professional services, retail, tourism and wholesale trade. It generates majority of income from interest charged on loans, and interest and dividends earned on investments.
62GF Score

Get the complete analysis for FIBK

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

$38.90
Price
$32.89
GF Value