Question 1

What is Pentair's P/E ratio?

Accepted Answer

Pentair (PNR) P/E ratio is 17.8× as of June 5, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for Pentair?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For Pentair specifically, the relevant sector benchmark is the current sector median of 27.8×.

Question 5

Is Pentair's P/E ratio high or low?

Accepted Answer

Pentair's P/E ratio of 17.8× is below its own 5-year average of 21.2× and below the sector median of 27.8×. That places the current reading at the 21th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is Pentair's historical P/E ratio range?

Accepted Answer

In the available daily series, Pentair (PNR) P/E ratio has ranged from a low of 5.4× in 2003 to a high of 93.8× in 2012. The 5-year average is 21.2× and the 5-year median is 21.7×.

Question 7

What was Pentair's P/E ratio in 2025?

Accepted Answer

Pentair (PNR) P/E ratio at the end of 2025 was 26.0×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does Pentair's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$17.02B	$653.80M	26.0×	-0.9×	Dec 31, 2025
2024	$16.82B	$625.40M	26.9×	+7.6×	Dec 31, 2024
2023	$12.02B	$622.70M	19.3×	+3.9×	Dec 31, 2023
2022	$7.40B	$480.90M	15.4×	-6.4×	Dec 31, 2022
2021	$12.06B	$553.00M	21.8×	-2.8×	Dec 31, 2021
2020	$8.82B	$358.60M	24.6×	+2.9×	Dec 31, 2020
2019	$7.73B	$355.70M	21.7×	+2.9×	Dec 31, 2019
2018	$6.53B	$347.40M	18.8×	+5.9×	Dec 31, 2018
2017	$8.60B	$666.50M	12.9×	-0.2×	Dec 31, 2017
2016	$6.84B	$522.20M	13.1×	+0.3×	Dec 31, 2016
2015	$6.00B	$469.10M	12.8×	-25.2×	Dec 31, 2015
2014	$8.17B	$214.90M	38.0×	+18.8×	Dec 31, 2014
2013	$10.33B	$536.80M	19.2×	—	Dec 31, 2013
2012	$3.76B	−$106.98M	—	—	Dec 31, 2012
2011	$2.20B	$34.22M	64.4×	+52.2×	Dec 31, 2011
2010	$2.41B	$197.83M	12.2×	-6.1×	Dec 31, 2010
2009	$2.11B	$115.49M	18.2×	+11.5×	Dec 31, 2009
2008	$1.55B	$228.73M	6.8×	-4.1×	Dec 31, 2008
2007	$2.30B	$210.93M	10.9×	-0.4×	Dec 31, 2007
2006	$2.08B	$183.73M	11.3×	-1.9×	Dec 31, 2006
2005	$2.33B	$175.94M	13.3×	-3.8×	Dec 31, 2005
2004	$2.93B	$171.23M	17.1×	+11.7×	Dec 31, 2004
2003	$764.46M	$141.35M	5.4×	-3.3×	Dec 31, 2003
2002	$1.14B	$129.90M	8.8×	-27.8×	Dec 31, 2002
2001	$1.20B	$32.87M	36.6×	—	Dec 31, 2001


Lennox International (LII)	20.6×
Paychex (PAYX)	20.6×
Copart (CPRT)	20.4×
Otis Worldwide (OTIS)	20.2×
Union Pacific (UNP)	19.9×
Allegion (ALLE)	19.7×
Alamo Group (ALG)	19.6×
Carlisle Companies (CSL)	18.8×
Automatic Data Processing (ADP)	18.8×
Snap-on (SNA)	18.5×
Brady (BRC)	18.5×
Canadian National Railway (CNI)	18.4×
United Rentals (URI)	18.4×
Pool (POOL)	18.1×
McGrath RentCorp (MGRC)	17.5×
A. O. Smith (AOS)	17.4×
FedEx (FDX)	16.9×
Textron (TXT)	16.6×
United Parcel Service (UPS)	15.9×
ABM Industries (ABM)	15.2×
Gartner (IT)	14.9×
AGCO (AGCO)	10.9×
Delta Air Lines (DAL)	9.7×
United Airlines Holdings (UAL)	8.2×
Versant Media Group, Inc. Class A (VSNT)	6.3×

P/E Ratio for Pentair (PNR)

P/E Ratio daily chart for Pentair (PNR)

Historical P/E Ratio for Pentair (PNR) from 2001 to 2025

About P/E Ratio at Pentair (PNR)

Pentair P/E Ratio by Year

Pentair P/E Ratio 2025: 26.0×

Pentair P/E Ratio 2024: 26.9×

Pentair P/E Ratio 2023: 19.3×

Pentair P/E Ratio 2022: 15.4×

Pentair P/E Ratio 2021: 21.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

Pentair (PNR) Key Financials

P/E Ratio daily chart for Pentair (PNR)

Historical P/E Ratio for Pentair (PNR) from 2001 to 2025

About P/E Ratio at Pentair (PNR)

Pentair P/E Ratio by Year

Pentair P/E Ratio 2025: 26.0×

Pentair P/E Ratio 2024: 26.9×

Pentair P/E Ratio 2023: 19.3×

Pentair P/E Ratio 2022: 15.4×

Pentair P/E Ratio 2021: 21.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

+What is Pentair's P/E ratio?

+How is the P/E ratio calculated?

+What is the P/E ratio?

+What is a good P/E ratio for Pentair?

+Is Pentair's P/E ratio high or low?

+What is Pentair's historical P/E ratio range?

+What was Pentair's P/E ratio in 2025?

+Why does Pentair's P/E ratio change over time?

Pentair (PNR) Key Financials