What if you'd held PNR?
A $1,000 investment in Pentair plc. (PNR) at the month-end close of 1973-05 would be worth $150,436 at the close of 2026-08 — +14943.6% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $73,444.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-08, dividends included.
Every year, $1,000 from 1973
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1973 | $1,000 | — |
| 1974 | $684 | -31.6% |
| 1975 | $492 | -28.1% |
| 1976 | $1,334 | +171.1% |
| 1977 | $1,731 | +29.8% |
| 1978 | $2,129 | +22.9% |
| 1979 | $2,129 | 0.0% |
| 1980 | $2,318 | +8.9% |
| 1981 | $2,415 | +4.2% |
| 1982 | $2,366 | -2.1% |
| 1983 | $3,923 | +65.8% |
| 1984 | $3,923 | 0.0% |
| 1985 | $4,194 | +6.9% |
| 1986 | $3,257 | -22.3% |
| 1987 | $2,637 | -19.1% |
| 1988 | $3,971 | +50.6% |
| 1989 | $3,494 | -12.0% |
| 1990 | $3,205 | -8.3% |
| 1991 | $5,357 | +67.1% |
| 1992 | $5,388 | +0.6% |
| 1993 | $6,889 | +27.9% |
| 1994 | $9,095 | +32.0% |
| 1995 | $10,772 | +18.4% |
| 1996 | $14,237 | +32.2% |
| 1997 | $16,126 | +13.3% |
| 1998 | $18,149 | +12.5% |
| 1999 | $17,826 | -1.8% |
| 2000 | $11,436 | -35.8% |
| 2001 | $17,670 | +54.5% |
| 2002 | $17,061 | -3.4% |
| 2003 | $23,068 | +35.2% |
| 2004 | $44,621 | +93.4% |
| 2005 | $35,849 | -19.7% |
| 2006 | $33,160 | -7.5% |
| 2007 | $37,424 | +12.9% |
| 2008 | $26,000 | -30.5% |
| 2009 | $36,438 | +40.1% |
| 2010 | $42,129 | +15.6% |
| 2011 | $39,235 | -6.9% |
| 2012 | $59,196 | +50.9% |
| 2013 | $95,126 | +60.7% |
| 2014 | $82,607 | -13.2% |
| 2015 | $62,935 | -23.8% |
| 2016 | $73,002 | +16.0% |
| 2017 | $93,932 | +28.7% |
| 2018 | $76,208 | -18.9% |
| 2019 | $94,253 | +23.7% |
| 2020 | $111,113 | +17.9% |
| 2021 | $154,716 | +39.2% |
| 2022 | $96,889 | -37.4% |
| 2023 | $159,054 | +64.2% |
| 2024 | $222,677 | +40.0% |
| 2025 | $232,761 | +4.5% |
| 2026 | $148,059 | -36.4% |
Best and worst month-end to buy
The best single month-end close to have bought PNR was 1975-11 ($0.21): $1,000 then is $310,853 today. The worst was 2025-09 ($109): $1,000 then is $599.
FAQ
What would $1,000 in PNR be worth today?
A $1,000 investment in Pentair plc. (PNR) at the start of 1973 would be worth about $150,436 today, a total return of +14943.6%. Dividends are reinvested in these figures.
What were the best and worst years for PNR?
Pentair plc. (PNR)'s strongest calendar year since 1973 was 1976, a +171.1% return — $1,000 held through that year became about $2,711 by year-end. Its weakest year was 2022, at -37.4%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in PNR have grown?
Investing $100 at the end of every month since 1973-05 would have grown to about $1.97M on $64,000 invested.
Did PNR beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $73,444. PNR beat the S&P 500 by +104.8% in total return.
Is this investment advice?
No. What If I'd Held is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
Pentair plc. (PNR) historical total-return data from 1973-05 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (Yahoo Finance): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. What If I'd Held is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.