Quanta Services (WBO:PWR) Cyclically Adjusted PB Ratio: (As of Sep. 13, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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.

WBO:PWR Quanta Services Inc WBO:PWR
93 GF Score
Price €537.00
GF Value €398.33
! 2 Warning Signs
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What is Quanta Services Cyclically Adjusted PB Ratio?

Note: If the price history is too short, we do not calculate current Cyclically Adjusted PB Ratio for this stock. All the historical data is shown as the company's primary share's data instead.

Shiller PE for Stocks: The True Measure of Stock Valuation


Quanta Services  (WBO:PWR) 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.


Quanta Services Cyclically Adjusted PB Ratio Related Terms


Quanta Services Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Quanta Services'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.

Quanta Services Cyclically Adjusted PB Ratio Chart

Quanta Services 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 4.28 4.76 6.63 8.93 10.82

Quanta Services 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 10.13 10.82 10.82 13.54 17.21

WBO:PWR vs : Cyclically Adjusted PB Ratio Comparison

For the Engineering & Construction subindustry, Quanta Services'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.


Quanta Services Cyclically Adjusted PB Ratio vs Construction Industry

For the Construction industry and Industrials sector, Quanta Services's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


WBO:PWR
93GF Score
Quanta Services Inc WBO:PWR
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Quanta Services 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.

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

For example, Quanta Services'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)
=55.67/333.9520*333.9520
=55.670

Current CPI (Jun. 2026) = 333.9520.

Quanta Services Quarterly Data

Book Value per Share CPI Adj_Book
201609 20.180 241.428 27.914
201612 21.877 241.432 30.261
201703 21.441 243.801 29.369
201706 21.018 244.955 28.654
201709 20.683 246.819 27.985
201712 20.894 246.524 28.304
201803 19.751 249.554 26.431
201806 21.190 251.989 28.082
201809 22.029 252.439 29.142
201812 22.452 251.233 29.844
201903 23.195 254.202 30.472
201906 23.493 256.143 30.630
201909 24.931 256.759 32.426
201912 25.606 256.974 33.276
202003 24.922 258.115 32.244
202006 25.241 257.797 32.697
202009 25.388 260.280 32.574
202012 25.820 260.474 33.104
202103 26.354 264.877 33.227
202106 26.753 271.696 32.883
202109 28.294 274.310 34.446
202112 31.720 278.802 37.995
202203 32.448 287.504 37.690
202206 33.898 296.311 38.204
202209 36.709 296.808 41.303
202212 35.556 296.797 40.007
202303 35.475 301.836 39.250
202306 36.368 305.109 39.806
202309 38.619 307.789 41.902
202312 39.528 306.746 43.034
202403 39.950 312.332 42.715
202406 41.663 314.175 44.286
202409 43.161 315.301 45.714
202412 47.322 315.605 50.073
202503 46.521 319.799 48.580
202506 45.881 322.561 47.501
202509 47.972 324.800 49.324
202512 51.032 324.054 52.591
202603 52.138 330.213 52.728
202606 55.670 333.952 55.670

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 Quanta Services (WBO:PWR) Overvalued in 2026?

Based on GuruFocus' analysis, Quanta Services stock appears to be overvalued. The current stock price of €537.00 is trading 34.8% above its estimated GF Value™ of €398.33.

Key valuation signals for WBO:PWR:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €398.33 vs. price of €537.00 (34.8% above fair value)
  • GF Score™: 93/100 with 2 warning signs

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


Quanta Services Business Description

Comparable Companies
Address 2727 North Loop West, Houston, TX, USA, 77008
Quanta Services is a leading provider of specialty contracting services, delivering comprehensive infrastructure solutions for the electric and gas utility, communications, pipeline, and energy industries in the United States, Canada, and Australia. Quanta reports its results under two segments: electric and underground utility and infrastructure.
93GF Score

Get the complete analysis for WBO:PWR

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

€537.00
Price
€398.33
GF Value