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Iren SpAMIL:IRE +0.79%76 Cyclically Adjusted PB Ratio is 1.13 as of Jul. 14, 2026, which is 7% below its 10-year median of 1.22. GuruFocus rates MIL:IRE with a GF Score™ of 76/100 and a GF Value™ of €2.17 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 440 Utilities - Regulated companies, Iren SpA ranks better than 64.55% on this metric.
The historical rank and industry rank for Iren SpA's Cyclically Adjusted PB Ratio or its related term are showing as below:
MIL:IRE'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.71 Med: 1.22 Max: 1.92
Current: 1.13
During the past years, Iren SpA's highest Cyclically Adjusted PB Ratio was 1.92. The lowest was 0.71. And the median was 1.22.
MIL:IRE's Cyclically Adjusted PB Ratio is ranked better than 64.55% of 440
companies
in the Utilities - Regulated industry
Industry Median: 1.525
vs MIL:IRE: 1.13
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.
Iren SpA's adjusted book value per share data for the three months ended in Mar. 2026 was €2.791. 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 €2.25 for the trailing ten years ended in Mar. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Iren SpA (MIL:IRE) 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.
Iren SpA Cyclically Adjusted PB Ratio Related Terms
Iren SpA Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Iren SpA'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.
MIL:IRE vs SRE: Cyclically Adjusted PB Ratio Comparison
For the Utilities - Diversified subindustry, Iren SpA'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.
Iren SpA Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Iren SpA's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Iren SpA's Cyclically Adjusted PB Ratio falls into.
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.
Iren SpA's Cyclically Adjusted PB Ratio for today is calculated as
* 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.
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 1.13 mean?
Iren SpA (MIL:IRE) has a Cyclically Adjusted PB Ratio of 1.13 as of Jul. 14, 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 Iren SpA and its competitors. This is near median its historical median of 1.22. Over the past decade, Iren SpA's Cyclically Adjusted PB Ratio has ranged from 0.71 to 1.92. According to the industry distribution chart, Iren SpA ranks #156 out of 440 companies in the Utilities - Regulated industry, placing it in the top 35.5%.
Is Iren SpA's Cyclically Adjusted PB Ratio too high?
Iren SpA's current Cyclically Adjusted PB Ratio of 1.13 is near median its 10-year median of 1.22. Over the past 10 years, this metric has ranged from a low of 0.71 to a high of 1.92. The Utilities - Regulated industry median Cyclically Adjusted PB Ratio is 1.53. Iren SpA's value of 1.13 is 25.9% below this industry median. Based on the distribution chart, Iren SpA ranks #156 out of 440 companies in the Utilities - Regulated industry, which is above the industry midpoint. Overall, Iren SpA has a GF Score™ of 76/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Iren SpA's Cyclically Adjusted PB Ratio compare to SRE?
According to the Utilities - Regulated industry distribution chart, Iren SpA ranks #156 out of 440 companies for Cyclically Adjusted PB Ratio. This puts Iren SpA in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.53. Iren SpA's value of 1.13 is 25.9% below this benchmark. Historically, Iren SpA's own Cyclically Adjusted PB Ratio has ranged from 0.71 to 1.92 over the past decade. While the company's 10-year median is 1.22 vs. the industry median of 1.53, Iren SpA 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 an Utilities - Regulated company?
The median Cyclically Adjusted PB Ratio among Utilities - Regulated companies is 1.53, based on 440 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. Iren SpA's current Cyclically Adjusted PB Ratio of 1.13 is 25.9% 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 Iren SpA and its competitors. For the Utilities - Regulated industry, the median Cyclically Adjusted PB Ratio is 1.53 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Iren SpA's current Cyclically Adjusted PB Ratio is 1.13, which is near median its own 10-year median of 1.22. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Iren SpA stock overvalued right now?
Based on GuruFocus' analysis, Iren SpA (MIL:IRE) is currently considered Modestly Overvalued. The stock's GF Value™ is €2.17, compared to a current price of €2.55 — trading 17.6% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.13, which is near median its 10-year median of 1.22 and 25.9% below the Utilities - Regulated industry median of 1.53. Iren SpA's overall GF Score™ is 76/100 with 4 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 Iren SpA (MIL:IRE), the current Cyclically Adjusted PB Ratio is 1.13 as of Jul. 14, 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 Iren SpA (MIL:IRE) Overvalued in 2026?
Based on GuruFocus' analysis, Iren SpA stock appears to be overvalued.
The current stock price of €2.55 is trading 17.6% above its estimated GF Value™ of €2.17.
GuruFocus considers Iren SpA to be Modestly Overvalued.
Key valuation signals for MIL:IRE:
Cyclically Adjusted PB Ratio: 1.13 (near median its 10-year median of 1.22)
GF Value™: €2.17 vs. price of €2.55 (17.6% above fair value)
Industry Position: 25.9% below the Utilities - Regulated median (#156 of 440)
No single metric tells the full story. See the MIL:IRE stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Iren SpA is a multi-service Italian utilities holding company that produces and distributes electricity and natural gas. It also provides district heating, water, and environmental services. Iren has five operating companies that include Iren Acqua Gas, Iren Energia (electricity and thermal production), Iren Mercato (sale of electricity, gas, and district heating), Iren Emilia (gas distribution), and Iren Ambiente (environmental services). The company primarily uses hydroelectric, cogeneration, and wind power as energy sources. The majority of revenue is derived from the distribution and sale of electricity and natural gas products and services.
76GF Score
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