Compania deneamento de Minas Gerais - COPASA MG (BSP:CSMG3) Shiller PE Ratio: (As of Sep. 21, 2026)

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BSP:CSMG3 Compania de Saneamento de Minas Gerais - COPASA MG BSP:CSMG3
81 GF Score
Price R$56.53
GF Value R$25.83
Valuation Significantly Overvalued
! 3 Warning Signs
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What is Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Compania deneamento de Minas Gerais - COPASA MG  (BSP:CSMG3) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio Related Terms


Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Compania deneamento de Minas Gerais - COPASA MG's Shiller PE 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.

Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio Chart

Compania deneamento de Minas Gerais - COPASA MG Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 7.64 8.99 10.32 9.16 15.97

Compania deneamento de Minas Gerais - COPASA MG Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE 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 10.90 12.90 15.70 19.84 20.23

BSP:CSMG3 vs AWK, WTRG, AWR: Shiller PE Ratio Comparison

For the Utilities - Regulated Water subindustry, Compania deneamento de Minas Gerais - COPASA MG's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.


Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, Compania deneamento de Minas Gerais - COPASA MG's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Compania deneamento de Minas Gerais - COPASA MG's Shiller PE Ratio falls into.


BSP:CSMG3
81GF Score
Compania de Saneamento de Minas Gerais - COPASA MG BSP:CSMG3
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Compania deneamento de Minas Gerais - COPASA MG Shiller PE Ratio Calculation

For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Compania deneamento de Minas Gerais - COPASA MG's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Compania deneamento de Minas Gerais - COPASA MG's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.599/177.5443*177.5443
=0.599

Current CPI (Jun. 2026) = 177.5443.

Compania deneamento de Minas Gerais - COPASA MG Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 0.307 109.986 0.495
201612 0.347 110.802 0.556
201703 0.393 111.869 0.624
201706 0.292 112.115 0.463
201709 0.393 112.777 0.619
201712 0.398 114.068 0.619
201803 0.433 114.868 0.670
201806 0.291 117.038 0.441
201809 0.332 117.881 0.500
201812 0.469 118.340 0.704
201903 0.493 120.124 0.728
201906 0.314 120.977 0.461
201909 0.510 121.292 0.746
201912 0.673 123.436 0.968
202003 0.424 124.092 0.607
202006 0.386 123.557 0.555
202009 0.634 125.095 0.900
202012 0.709 129.012 0.975
202103 0.580 131.660 0.782
202106 0.625 133.871 0.829
202109 0.043 137.913 0.056
202112 0.170 141.992 0.212
202203 0.442 146.537 0.535
202206 0.476 149.784 0.564
202209 0.599 147.800 0.720
202212 0.708 150.207 0.836
202303 0.891 153.352 1.031
202306 0.657 154.519 0.755
202309 1.153 155.464 1.317
202312 0.937 157.148 1.058
202403 0.927 159.372 1.033
202406 0.858 161.052 0.945
202409 0.969 162.342 1.059
202412 0.717 164.740 0.773
202503 1.130 168.102 1.194
202506 0.763 169.670 0.799
202509 0.952 170.739 0.990
202512 0.889 171.765 0.919
202603 0.971 175.066 0.985
202606 0.599 177.544 0.599

Add all the adjusted EPS together and divide 10 will get our E10.

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 Compania deneamento de Minas Gerais - COPASA MG (BSP:CSMG3) Overvalued in 2026?

Based on GuruFocus' analysis, Compania deneamento de Minas Gerais - COPASA MG stock appears to be overvalued. The current stock price of R$56.53 is trading 118.9% above its estimated GF Value™ of R$25.83. GuruFocus considers Compania deneamento de Minas Gerais - COPASA MG to be Significantly Overvalued.

Key valuation signals for BSP:CSMG3:

  • Shiller PE Ratio:
  • GF Value™: R$25.83 vs. price of R$56.53 (118.9% above fair value)
  • GF Score™: 81/100 with 3 warning signs

No single metric tells the full story. See the BSP:CSMG3 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Compania deneamento de Minas Gerais - COPASA MG Business Description

Address Rua Mar de Espanha 525, Santo Antonio, Belo Horizonte, MG, BRA, 30330900
Compania de Saneamento de Minas Gerais - COPASA MG provides water supply, sewage, and solid waste services. The company operates out of subsidiaries COPASA Servicos de Irrigacao S.A., COPASA Aguas Minerais de Minas S.A, and COPANOR. COPASA Servicos de Irrigacao S.A. manages, performs, and sells irrigation system services. COPASA Aguas Minerais de Minas S.A. produces, bottles, distributes, and sells mineral water. COPANOR provides water supply and sewage treatment services across the North and Northeast regions of the State of Minas Gerais. A majority of revenue is derived from water services while the rest is derived from sewage services. The company operates out of Brazil, where an amount of revenue is generated.
81GF Score

Get the complete analysis for BSP:CSMG3

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

R$56.53
Price
R$25.83
GF Value