Ameren (MIL:1AEE) Cyclically Adjusted PB Ratio: (As of Sep. 22, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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
Charlie Tian
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.

MIL:1AEE Ameren Corp MIL:1AEE
77 GF Score
Price €88.96
GF Value €92.24
! 9 Warning Signs
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What is Ameren Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Ameren  (MIL:1AEE) 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.


Ameren Cyclically Adjusted PB Ratio Related Terms


Ameren Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Ameren'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.

Ameren Cyclically Adjusted PB Ratio Chart

Ameren 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 - - - - 2.18

Ameren 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 - 2.32 2.22 2.35 2.50

MIL:1AEE vs DTE, EIX, ES: Cyclically Adjusted PB Ratio Comparison

For the Utilities - Regulated Electric subindustry, Ameren'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.


Ameren Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry

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

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


MIL:1AEE
77GF Score
Ameren Corp MIL:1AEE
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ameren 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.

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

For example, Ameren'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)
=43.657/333.9520*333.9520
=43.657

Current CPI (Jun. 2026) = 333.9520.

Ameren Quarterly Data

Book Value per Share CPI Adj_Book
201609 26.904 241.428 37.215
201612 28.314 241.432 39.164
201703 27.772 243.801 38.041
201706 26.383 244.955 35.968
201709 26.105 246.819 35.321
201712 25.148 246.524 34.067
201803 24.607 249.554 32.929
201806 26.468 251.989 35.077
201809 27.493 252.439 36.371
201812 27.810 251.233 36.967
201903 28.455 254.202 37.382
201906 28.341 256.143 36.950
201909 30.590 256.759 39.787
201912 29.675 256.974 38.564
202003 30.368 258.115 39.290
202006 30.155 257.797 39.063
202009 29.774 260.280 38.202
202012 29.297 260.474 37.561
202103 30.894 264.877 38.951
202106 31.099 271.696 38.225
202109 32.873 274.310 40.020
202112 33.540 278.802 40.175
202203 34.582 287.504 40.169
202206 37.051 296.311 41.758
202209 40.791 296.808 45.896
202212 38.041 296.797 42.803
202303 37.630 301.836 41.634
202306 37.773 305.109 41.344
202309 40.137 307.789 43.549
202312 39.018 306.746 42.479
202403 40.191 312.332 42.973
202406 40.805 314.175 43.374
202409 40.158 315.301 42.533
202412 43.806 315.605 46.353
202503 42.291 319.799 44.163
202506 39.202 322.561 40.586
202509 40.615 324.800 41.759
202512 41.680 324.054 42.953
202603 42.925 330.213 43.411
202606 43.657 333.952 43.657

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 Ameren (MIL:1AEE) Overvalued in 2026?

Based on GuruFocus' analysis, Ameren stock appears to be undervalued. The current stock price of €88.96 is trading 3.6% below its estimated GF Value™ of €92.24.

Key valuation signals for MIL:1AEE:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €92.24 vs. price of €88.96 (3.6% below fair value)
  • GF Score™: 77/100 with 9 warning signs

No single metric tells the full story. See the MIL:1AEE stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ameren Business Description

Other Exchanges AEE:USA0HE2:UKAE4:Germany
Address 1901 Chouteau Avenue, St. Louis, MO, USA, 63103
Ameren owns rate-regulated generation, transmission, and distribution networks that deliver electricity and natural gas through the company's two main subsidiaries, Ameren Missouri and Ameren Illinois. It serves 2.5 million electricity customers and 900,000 natural gas customers across its two service territories.
77GF Score

Get the complete analysis for MIL:1AEE

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

€88.96
Price
€92.24
GF Value