Pentair (MEX:PNRN) Cyclically Adjusted PB Ratio: (As of Sep. 21, 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.

MEX:PNRN Pentair PLC MEX:PNRN
71 GF Score
Price MXN822.50
GF Value MXN1,261.95
! 2 Warning Signs
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What is Pentair Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Pentair  (MEX:PNRN) 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.


Pentair Cyclically Adjusted PB Ratio Related Terms


Pentair Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Pentair'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.

Pentair Cyclically Adjusted PB Ratio Chart

Pentair 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 2.06 1.98 2.00 1.96 1.94

Pentair 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 1.96 1.97 1.97 1.97 1.98

MEX:PNRN vs FLS, RRX, DCI: Cyclically Adjusted PB Ratio Comparison

For the Specialty Industrial Machinery subindustry, Pentair'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.


Pentair Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Pentair's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


MEX:PNRN
71GF Score
Pentair PLC MEX:PNRN
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Pentair 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.

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

For example, Pentair'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)
=410.393/142.3000*142.3000
=410.393

Current CPI (Jun. 2026) = 142.3000.

Pentair Quarterly Data

Book Value per Share CPI Adj_Book
201609 463.796 101.500 650.228
201612 482.198 102.200 671.397
201703 452.114 102.700 626.444
201706 489.049 103.500 672.383
201709 500.847 104.300 683.322
201712 546.664 105.000 740.860
201803 482.909 105.100 653.834
201806 211.670 105.900 284.425
201809 202.524 106.600 270.349
201812 211.012 107.100 280.364
201903 211.059 107.000 280.689
201906 206.594 107.900 272.459
201909 219.507 108.400 288.154
201912 219.236 108.500 287.533
202003 267.893 108.600 351.024
202006 271.545 108.800 355.155
202009 269.350 109.200 350.994
202012 252.674 109.400 328.661
202103 270.074 109.700 350.333
202106 272.626 111.400 348.247
202109 290.242 112.400 367.451
202112 300.207 114.700 372.445
202203 301.891 116.500 368.748
202206 314.349 120.500 371.219
202209 322.600 122.300 375.356
202212 320.811 125.300 364.337
202303 307.444 126.800 345.026
202306 304.917 129.400 335.314
202309 319.699 130.100 349.678
202312 329.582 130.500 359.383
202403 333.156 131.600 360.244
202406 379.289 133.000 405.811
202409 415.154 133.500 442.520
202412 449.530 135.100 473.487
202503 451.897 136.100 472.483
202506 423.278 138.400 435.206
202509 423.844 138.900 434.219
202512 426.264 139.900 433.577
202603 425.371 140.800 429.903
202606 410.393 142.300 410.393

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 Pentair (MEX:PNRN) Overvalued in 2026?

Based on GuruFocus' analysis, Pentair stock appears to be undervalued. The current stock price of MXN822.50 is trading 34.8% below its estimated GF Value™ of MXN1,261.95.

Key valuation signals for MEX:PNRN:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: MXN1,261.95 vs. price of MXN822.50 (34.8% below fair value)
  • GF Score™: 71/100 with 2 warning signs

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


Pentair Business Description

Address 70 London Road, Regal House, Twickenham, London, GBR, TW13QS
Pentair is a global leader in the water treatment industry, with 10,000 employees and a presence in 25 countries. Its business is organized into three segments: pool, water technologies, and flow. The company offers a wide range of water solutions, including energy-efficient swimming pool equipment, filtration solutions, and commercial and industrial pumps. Pentair generated approximately $4.2 billion in revenue in 2025.
71GF Score

Get the complete analysis for MEX:PNRN

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

MXN822.50
Price
MXN1,261.95
GF Value