Pentair (FRA:PNT) Cyclically Adjusted Book per Share: €18.31 (As of Mar. 2026)


FRA:PNT Pentair PLC FRA:PNT
74 GF Score
Price €67.32
GF Value €80.24
Valuation Modestly Undervalued
! 1 Warning Sign
View Full Analysis

What is Pentair Cyclically Adjusted Book per Share?

Pentair FRA:PNT +0.87% 74 Cyclically Adjusted Book per Share is €18.31 as of Mar. 2026. GuruFocus rates FRA:PNT with a GF Score™ of 74/100 and a GF Value™ of €80.24 (Modestly Undervalued). The stock has 1 warning sign 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.

Pentair's adjusted book value per share for the three months ended in Mar. 2026 was €20.394. 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 €18.31 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Pentair's average Cyclically Adjusted Book Growth Rate was -1.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -3.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -2.00% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -1.60% 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 Pentair was 15.90% per year. The lowest was -3.40% per year. And the median was 2.70% per year.

As of today (2026-07-04), Pentair's current stock price is €67.32. Pentair's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €18.31. Pentair's Cyclically Adjusted PB Ratio of today is 3.68.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Pentair was 5.15. The lowest was 0.96. And the median was 2.12.


Pentair  (FRA:PNT) 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.

Pentair's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=67.32/18.31
=3.68

* 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 Pentair was 5.15. The lowest was 0.96. And the median was 2.12.


Be Aware

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


Pentair Cyclically Adjusted Book per Share Related Terms


Pentair Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Pentair'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.

Pentair Cyclically Adjusted Book per Share Chart

Pentair 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 20.91 22.50 20.73 21.13 18.68

Pentair 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 20.00 18.98 18.30 18.68 18.31

FRA:PNT vs CR, GGG, WTS: Cyclically Adjusted Book per Share 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.


FRA:PNT
74GF Score
Pentair PLC FRA:PNT
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Pentair 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, Pentair'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)
=20.394/140.8000*140.8000
=20.394

Current CPI (Mar. 2026) = 140.8000.

Pentair Quarterly Data

Book Value per Share CPI Adj_Book
201606 20.476 101.000 28.545
201609 21.352 101.500 29.619
201612 22.189 102.200 30.570
201703 22.445 102.700 30.772
201706 24.047 103.500 32.713
201709 23.140 104.300 31.238
201712 23.609 105.000 31.659
201803 21.457 105.100 28.745
201806 9.218 105.900 12.256
201809 9.282 106.600 12.260
201812 9.418 107.100 12.381
201903 9.630 107.000 12.672
201906 9.514 107.900 12.415
201909 10.095 108.400 13.112
201912 10.449 108.500 13.560
202003 10.335 108.600 13.399
202006 10.435 108.800 13.504
202009 10.462 109.200 13.489
202012 10.426 109.400 13.418
202103 11.088 109.700 14.231
202106 11.367 111.400 14.367
202109 12.010 112.400 15.045
202112 12.982 114.700 15.936
202203 13.746 116.500 16.613
202206 14.743 120.500 17.227
202209 16.204 122.300 18.655
202212 15.537 125.300 17.459
202303 15.908 126.800 17.664
202306 16.409 129.400 17.855
202309 17.237 130.100 18.655
202312 17.843 130.500 19.251
202403 18.437 131.600 19.726
202406 19.270 133.000 20.400
202409 19.079 133.500 20.122
202412 20.645 135.100 21.516
202503 20.429 136.100 21.134
202506 19.422 138.400 19.759
202509 19.693 138.900 19.962
202512 20.242 139.900 20.372
202603 20.394 140.800 20.394

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 €18.31 mean?
Pentair (FRA:PNT) has a Cyclically Adjusted Book per Share of €18.31 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 Pentair and its competitors.
Is Pentair's Cyclically Adjusted Book per Share too high?
Pentair's current Cyclically Adjusted Book per Share is €18.31. Overall, Pentair has a GF Score™ of 74/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Pentair's Cyclically Adjusted Book per Share compare to CR and GGG?
Pentair's Cyclically Adjusted Book per Share of €18.31 can be compared against companies in the Industrial Products 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 Industrial Products company?
A good Cyclically Adjusted Book per Share depends on the Industrial Products 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 Pentair and its competitors. Pentair's current Cyclically Adjusted Book per Share is €18.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Pentair stock overvalued right now?
Based on GuruFocus' analysis, Pentair (FRA:PNT) is currently considered Modestly Undervalued. The stock's GF Value™ is €80.24, compared to a current price of €67.32 — trading 16.1% below its estimated fair value. The current Cyclically Adjusted Book per Share is €18.31. Pentair's overall GF Score™ is 74/100 with 1 warning sign 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 Pentair (FRA:PNT), the current Cyclically Adjusted Book per Share is €18.31 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 Pentair (FRA:PNT) Overvalued in 2026?

Based on GuruFocus' analysis, Pentair stock appears to be undervalued. The current stock price of €67.32 is trading 16.1% below its estimated GF Value™ of €80.24. GuruFocus considers Pentair to be Modestly Undervalued.

Key valuation signals for FRA:PNT:

  • Cyclically Adjusted Book per Share: €18.31
  • GF Value™: €80.24 vs. price of €67.32 (16.1% below fair value)
  • GF Score™: 74/100 with 1 warning sign

No single metric tells the full story. See the FRA:PNT 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.
74GF Score

Get the complete analysis for FRA:PNT

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

€67.32
Price
€80.24
GF Value