ERG SpA (CHIX:ERGM) Cyclically Adjusted PB Ratio: (As of Sep. 22, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
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Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

CHIX:ERGM ERG SpA CHIX:ERGM
71 GF Score
Price €24.22
GF Value €26.16
! 7 Warning Signs
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What is ERG SpA Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


ERG SpA  (CHIX:ERGm) 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.


ERG SpA Cyclically Adjusted PB Ratio Related Terms


ERG SpA Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for ERG 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.

ERG SpA Cyclically Adjusted PB Ratio Chart

ERG SpA 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 2.20 2.11 1.98 1.43 1.50

ERG SpA Semi-Annual Data
Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25 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 1.67 1.44 1.31 1.51 1.65

ERG SpA Cyclically Adjusted PB Ratio Competitor Comparison

For the Utilities - Renewable subindustry, ERG 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.


ERG SpA Cyclically Adjusted PB Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, ERG SpA's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


CHIX:ERGM
71GF Score
ERG SpA CHIX:ERGM
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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ERG SpA 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.

ERG SpA's Cyclically Adjusted Book per Share for the fiscal year that ended in Dec25 is calculated as:

For example, ERG SpA's adjusted Book Value per Share data for the fiscal year that ended in Dec25 was:

Adj_Book=Book Value per Share/CPI of Dec25 (Change)*Current CPI (Dec25)
=14.072/122.6000*122.6000
=14.072

Current CPI (Dec25) = 122.6000.

ERG SpA Annual Data

Book Value per Share CPI Adj_Book
201612 11.619 100.300 14.202
201712 12.616 101.200 15.284
201812 12.289 102.300 14.728
201912 11.998 102.800 14.309
202012 11.874 102.600 14.189
202112 10.490 106.600 12.064
202212 13.740 119.000 14.156
202312 14.543 119.700 14.895
202412 15.232 121.200 15.408
202512 14.072 122.600 14.072

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.

Is ERG SpA (CHIX:ERGM) Overvalued in 2026?

Based on GuruFocus' analysis, ERG SpA stock appears to be undervalued. The current stock price of €24.22 is trading 7.4% below its estimated GF Value™ of €26.16.

Key valuation signals for CHIX:ERGM:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €26.16 vs. price of €24.22 (7.4% below fair value)
  • GF Score™: 71/100 with 7 warning signs

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


ERG SpA Business Description

Other Exchanges ERG:Italy0MHC:UKER9:Germany
Address Via De Marini, 1, Torre WTC, Genoa, ITA, 16149
ERG SpA produces electricity from clean, renewable, and sustainable sources. Its energy comes from the combination of natural resources such as wind and sun. The company produces wind power, and electricity as a hydroelectric operator to markets across Europe. Electricity is also generated from natural gas operations located in Italy. ERG's wind power production is handled by subsidiary ENG Renew which focuses on developing, building, and operating wind assets. Hydropower and natural gas operations are split off into ERG Power Generation. The company's hydro assets include plants, dams, reservoirs, and a pumping station. Electricity from the plant is either fed into Italy's national grid or used to power other industrial plants.
71GF Score

Get the complete analysis for CHIX:ERGM

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

€24.22
Price
€26.16
GF Value