What if you'd held DCI?
A $1,000 investment in Donaldson Company, Inc. (DCI) at the month-end close of 1980-03 would be worth $419,910 at the close of 2026-08 — +41891.0% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $75,502.
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 1980
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1980 | $1,000 | — |
| 1981 | $1,119 | +11.9% |
| 1982 | $866 | -22.6% |
| 1983 | $1,130 | +30.6% |
| 1984 | $842 | -25.5% |
| 1985 | $1,320 | +56.8% |
| 1986 | $1,632 | +23.7% |
| 1987 | $1,526 | -6.5% |
| 1988 | $2,091 | +37.0% |
| 1989 | $2,289 | +9.5% |
| 1990 | $3,419 | +49.4% |
| 1991 | $4,024 | +17.7% |
| 1992 | $6,012 | +49.4% |
| 1993 | $7,198 | +19.7% |
| 1994 | $7,870 | +9.3% |
| 1995 | $8,372 | +6.4% |
| 1996 | $11,296 | +34.9% |
| 1997 | $15,340 | +35.8% |
| 1998 | $14,269 | -7.0% |
| 1999 | $16,743 | +17.3% |
| 2000 | $19,597 | +17.0% |
| 2001 | $27,628 | +41.0% |
| 2002 | $25,842 | -6.5% |
| 2003 | $42,822 | +65.7% |
| 2004 | $47,553 | +11.0% |
| 2005 | $46,830 | -1.5% |
| 2006 | $51,625 | +10.2% |
| 2007 | $69,684 | +35.0% |
| 2008 | $51,115 | -26.6% |
| 2009 | $65,462 | +28.1% |
| 2010 | $90,668 | +38.5% |
| 2011 | $107,004 | +18.0% |
| 2012 | $104,277 | -2.5% |
| 2013 | $139,810 | +34.1% |
| 2014 | $126,253 | -9.7% |
| 2015 | $95,553 | -24.3% |
| 2016 | $143,036 | +49.7% |
| 2017 | $169,020 | +18.2% |
| 2018 | $152,194 | -10.0% |
| 2019 | $205,435 | +35.0% |
| 2020 | $202,534 | -1.4% |
| 2021 | $217,834 | +7.6% |
| 2022 | $219,921 | +1.0% |
| 2023 | $248,075 | +12.8% |
| 2024 | $259,538 | +4.6% |
| 2025 | $347,028 | +33.7% |
| 2026 | $366,798 | +5.7% |
Best and worst month-end to buy
The best single month-end close to have bought DCI was 1982-07 ($0.18): $1,000 then is $524,294 today. The worst was 2026-01 ($101): $1,000 then is $919.
FAQ
What would $1,000 in DCI be worth today?
A $1,000 investment in Donaldson Company, Inc. (DCI) at the start of 1980 would be worth about $419,910 today, a total return of +41891.0%. Dividends are reinvested in these figures.
What were the best and worst years for DCI?
Donaldson Company, Inc. (DCI)'s strongest calendar year since 1980 was 2003, a +65.7% return — $1,000 held through that year became about $1,657 by year-end. Its weakest year was 2008, at -26.6%.
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 DCI have grown?
Investing $100 at the end of every month since 1980-03 would have grown to about $4.48M on $55,800 invested.
Did DCI beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $75,502. DCI beat the S&P 500 by +456.2% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
Donaldson Company, Inc. (DCI) historical total-return data from 1980-03 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. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.