Iberdrola (FRA:IBE5) Cyclically Adjusted Book per Share: €31.89 (As of Mar. 2026)


FRA:IBE5 Iberdrola SA FRA:IBE5
77 GF Score
Price €87.50
GF Value €40.89
Valuation Significantly Overvalued
! 10 Warning Signs
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What is Iberdrola Cyclically Adjusted Book per Share?

Iberdrola FRA:IBE5 +1.74% 77 Cyclically Adjusted Book per Share is €31.89 as of Mar. 2026. GuruFocus rates FRA:IBE5 with a GF Score™ of 77/100 and a GF Value™ of €40.89 (Significantly Overvalued). The stock has 10 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

Iberdrola's adjusted book value per share for the three months ended in Mar. 2026 was €35.825. 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 €31.89 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Iberdrola's average Cyclically Adjusted Book Growth Rate was 4.50% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 4.30% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 5.60% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Iberdrola was 6.50% per year. The lowest was 1.60% per year. And the median was 4.55% per year.

As of today (2026-07-05), Iberdrola's current stock price is €87.50. Iberdrola's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €31.89. Iberdrola's Cyclically Adjusted PB Ratio of today is 2.74.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Iberdrola was 2.73. The lowest was 1.01. And the median was 1.57.


Iberdrola  (FRA:IBE5) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

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.

Iberdrola's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=87.50/31.89
=2.74

* 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 Cyclically Adjusted PB Ratio of Iberdrola was 2.73. The lowest was 1.01. And the median was 1.57.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Iberdrola Cyclically Adjusted Book per Share Related Terms


Iberdrola Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Iberdrola's Cyclically Adjusted Book per Share 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.

Iberdrola Cyclically Adjusted Book per Share Chart

Iberdrola Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 24.83 27.22 28.46 29.68 31.07

Iberdrola Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share 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 30.39 30.96 30.60 31.07 31.89

FRA:IBE5 vs SRE, AES: Cyclically Adjusted Book per Share Comparison

For the Utilities - Diversified subindustry, Iberdrola'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.


Iberdrola Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, Iberdrola's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


FRA:IBE5
77GF Score
Iberdrola SA FRA:IBE5
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Iberdrola Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

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

For example, Iberdrola'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)
=35.825/129.8600*129.8600
=35.825

Current CPI (Mar. 2026) = 129.8600.

Iberdrola Quarterly Data

Book Value per Share CPI Adj_Book
201606 23.601 100.333 30.546
201609 23.020 99.737 29.973
201612 23.990 101.842 30.590
201703 23.764 100.896 30.586
201706 23.600 101.848 30.091
201709 23.535 101.524 30.104
201712 23.755 102.975 29.957
201803 23.737 102.122 30.184
201806 24.438 104.165 30.466
201809 23.190 103.818 29.007
201812 23.447 104.193 29.223
201903 25.563 103.488 32.077
201906 23.598 104.612 29.293
201909 24.978 103.905 31.217
201912 24.342 105.015 30.101
202003 25.653 103.469 32.196
202006 23.777 104.254 29.617
202009 23.368 103.521 29.314
202012 23.015 104.456 28.612
202103 23.653 104.857 29.293
202106 23.840 107.102 28.906
202109 28.940 107.669 34.905
202112 25.914 111.298 30.236
202203 32.248 115.153 36.367
202206 28.463 118.044 31.312
202209 35.182 117.221 38.975
202212 26.604 117.650 29.365
202303 32.579 118.948 35.568
202306 32.636 120.278 35.236
202309 33.311 121.343 35.649
202312 27.727 121.300 29.684
202403 33.901 122.762 35.861
202406 35.209 124.409 36.752
202409 33.578 123.121 35.416
202412 30.045 124.753 31.275
202503 29.725 125.531 30.750
202506 34.537 127.251 35.245
202509 34.634 126.840 35.459
202512 30.356 128.400 30.701
202603 35.825 129.860 35.825

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

What does a Cyclically Adjusted Book per Share of €31.89 mean?
Iberdrola (FRA:IBE5) has a Cyclically Adjusted Book per Share of €31.89 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Iberdrola and its competitors.
Is Iberdrola's Cyclically Adjusted Book per Share too high?
Iberdrola's current Cyclically Adjusted Book per Share is €31.89. Overall, Iberdrola has a GF Score™ of 77/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Iberdrola's Cyclically Adjusted Book per Share compare to SRE and AES?
Iberdrola's Cyclically Adjusted Book per Share of €31.89 can be compared against companies in the Utilities - Regulated industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Utilities - Regulated company?
A good Cyclically Adjusted Book per Share depends on the Utilities - Regulated industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Iberdrola and its competitors. Iberdrola's current Cyclically Adjusted Book per Share is €31.89. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Iberdrola stock overvalued right now?
Based on GuruFocus' analysis, Iberdrola (FRA:IBE5) is currently considered Significantly Overvalued. The stock's GF Value™ is €40.89, compared to a current price of €87.50 — trading 114% above its estimated fair value. The current Cyclically Adjusted Book per Share is €31.89. Iberdrola's overall GF Score™ is 77/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Iberdrola (FRA:IBE5), the current Cyclically Adjusted Book per Share is €31.89 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 Iberdrola (FRA:IBE5) Overvalued in 2026?

Based on GuruFocus' analysis, Iberdrola stock appears to be overvalued. The current stock price of €87.50 is trading 114% above its estimated GF Value™ of €40.89. GuruFocus considers Iberdrola to be Significantly Overvalued.

Key valuation signals for FRA:IBE5:

  • Cyclically Adjusted Book per Share: €31.89
  • GF Value™: €40.89 vs. price of €87.50 (114% above fair value)
  • GF Score™: 77/100 with 10 warning signs

No single metric tells the full story. See the FRA:IBE5 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Iberdrola Business Description

Address Plaza Euskadi Number 5, Biscay, Bilbao, ESP, 48009
Iberdrola is one of the largest utilities in the world with electric utility operations in nearly 40 countries. The company has a 58-gigawatt portfolio of hydro, wind, natural gas, and nuclear power plants. It is one of the largest owners of wind farms in the world, representing about 40% of its portfolio. Although the company has recently developed or acquired distribution and power generation assets in other geographic areas, Spain is still home to more than half of its power generation capacity. Iberdrola also owns and operates electricity distribution and transmission networks in Spain, the UK, Brazil, and the US.
77GF Score

Get the complete analysis for FRA:IBE5

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

€87.50
Price
€40.89
GF Value