ACEA SpA (MIL:ACE) Cyclically Adjusted Book per Share: €10.80 (As of Mar. 2026)


MIL:ACE ACEA SpA MIL:ACE
65 GF Score
Price €21.66
GF Value €15.07
Valuation Significantly Overvalued
! 4 Warning Signs
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What is ACEA SpA Cyclically Adjusted Book per Share?

ACEA SpA MIL:ACE -0.09% 65 Cyclically Adjusted Book per Share is €10.80 as of Mar. 2026. GuruFocus rates MIL:ACE with a GF Score™ of 65/100 and a GF Value™ of €15.07 (Significantly Overvalued). The stock has 4 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.

ACEA SpA's adjusted book value per share for the three months ended in Mar. 2026 was €13.578. 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 €10.80 for the trailing ten years ended in Mar. 2026.

During the past 12 months, ACEA SpA's average Cyclically Adjusted Book Growth Rate was 4.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 4.80% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 7.70% 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 ACEA SpA was 9.40% per year. The lowest was 2.60% per year. And the median was 4.80% per year.

As of today (2026-06-27), ACEA SpA's current stock price is €21.66. ACEA SpA's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €10.80. ACEA SpA's Cyclically Adjusted PB Ratio of today is 2.01.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of ACEA SpA was 2.96. The lowest was 1.08. And the median was 1.96.


ACEA SpA  (MIL:ACE) 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.

ACEA SpA's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=21.66/10.80
=2.01

* 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 ACEA SpA was 2.96. The lowest was 1.08. And the median was 1.96.


Be Aware

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


ACEA SpA Cyclically Adjusted Book per Share Related Terms


ACEA SpA Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for ACEA SpA'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.

ACEA SpA Cyclically Adjusted Book per Share Chart

ACEA SpA 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 8.01 9.28 9.69 10.18 10.69

ACEA SpA 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 10.38 10.49 10.62 10.69 10.80

MIL:ACE vs SRE: Cyclically Adjusted Book per Share Comparison

For the Utilities - Diversified subindustry, ACEA 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.


ACEA SpA Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry

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

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


MIL:ACE
65GF Score
ACEA SpA MIL:ACE
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

ACEA SpA 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, ACEA SpA'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)
=13.578/122.6000*122.6000
=13.578

Current CPI (Mar. 2026) = 122.6000.

ACEA SpA Quarterly Data

Book Value per Share CPI Adj_Book
201606 7.332 99.900 8.998
201609 7.562 100.100 9.262
201612 7.862 100.300 9.610
201703 8.222 101.000 9.980
201706 7.788 101.100 9.444
201709 8.007 101.200 9.700
201712 8.081 101.200 9.790
201803 7.638 101.800 9.199
201806 7.408 102.400 8.869
201809 7.828 102.600 9.354
201812 8.138 102.300 9.753
201903 8.445 102.800 10.072
201906 8.043 103.100 9.564
201909 8.384 102.900 9.989
201912 8.726 102.800 10.407
202003 9.068 102.900 10.804
202006 8.629 102.900 10.281
202009 8.971 102.300 10.751
202012 9.244 102.600 11.046
202103 9.660 103.700 11.421
202106 9.244 104.200 10.876
202109 9.729 104.900 11.371
202112 9.993 106.600 11.493
202203 10.424 110.400 11.576
202206 10.103 112.500 11.010
202209 10.279 114.200 11.035
202212 10.780 119.000 11.106
202303 11.202 118.800 11.560
202306 10.602 119.700 10.859
202309 10.799 120.300 11.005
202312 11.185 119.700 11.456
202403 11.589 120.200 11.820
202406 11.090 120.700 11.265
202409 11.584 121.200 11.718
202412 11.786 121.200 11.922
202503 12.290 122.500 12.300
202506 11.901 122.700 11.891
202509 12.769 123.100 12.717
202512 13.083 122.600 13.083
202603 13.578 122.600 13.578

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 €10.80 mean?
ACEA SpA (MIL:ACE) has a Cyclically Adjusted Book per Share of €10.80 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 ACEA SpA and its competitors.
Is ACEA SpA's Cyclically Adjusted Book per Share too high?
ACEA SpA's current Cyclically Adjusted Book per Share is €10.80. Overall, ACEA SpA has a GF Score™ of 65/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does ACEA SpA's Cyclically Adjusted Book per Share compare to SRE?
ACEA SpA's Cyclically Adjusted Book per Share of €10.80 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 ACEA SpA and its competitors. ACEA SpA's current Cyclically Adjusted Book per Share is €10.80. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ACEA SpA stock overvalued right now?
Based on GuruFocus' analysis, ACEA SpA (MIL:ACE) is currently considered Significantly Overvalued. The stock's GF Value™ is €15.07, compared to a current price of €21.66 — trading 43.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is €10.80. ACEA SpA's overall GF Score™ is 65/100 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 Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For ACEA SpA (MIL:ACE), the current Cyclically Adjusted Book per Share is €10.80 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 ACEA SpA (MIL:ACE) Overvalued in 2026?

Based on GuruFocus' analysis, ACEA SpA stock appears to be overvalued. The current stock price of €21.66 is trading 43.7% above its estimated GF Value™ of €15.07. GuruFocus considers ACEA SpA to be Significantly Overvalued.

Key valuation signals for MIL:ACE:

  • Cyclically Adjusted Book per Share: €10.80
  • GF Value™: €15.07 vs. price of €21.66 (43.7% above fair value)
  • GF Score™: 65/100 with 4 warning signs

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


ACEA SpA Business Description

Other Exchanges ACEm:UK0MHD:UKDCA:Germany
Address Piazzale Ostiense, 2, Roma, ITA, 00154
ACEA SpA is an Italian-based electricity and water utility company. It operates chiefly in Rome and other cities in Lazio, a central Italian region. With the help of its various subsidiaries and numerous ventures, Acea produces and sells energy, utilities, and environmental products and services. The operating segments of the firm include: Water, Networks and Public Lighting, Environment, Production, Commercial, and Engineering & Infrastructure Projects.
65GF Score

Get the complete analysis for MIL:ACE

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

€21.66
Price
€15.07
GF Value