What if you'd held LNT?
A $1,000 investment in Alliant Energy Corporation (LNT) at the month-end close of 1973-02 would be worth $99,363 at the close of 2026-08 — +9836.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $69,018.
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 | $776 | -22.4% |
| 1975 | $951 | +22.5% |
| 1976 | $1,244 | +30.8% |
| 1977 | $1,181 | -5.1% |
| 1978 | $1,063 | -10.0% |
| 1979 | $994 | -6.5% |
| 1980 | $943 | -5.1% |
| 1981 | $1,077 | +14.2% |
| 1982 | $1,343 | +24.7% |
| 1983 | $1,594 | +18.6% |
| 1984 | $1,665 | +4.4% |
| 1985 | $2,258 | +35.7% |
| 1986 | $2,797 | +23.8% |
| 1987 | $2,597 | -7.2% |
| 1988 | $2,898 | +11.6% |
| 1989 | $3,304 | +14.0% |
| 1990 | $3,591 | +8.7% |
| 1991 | $5,135 | +43.0% |
| 1992 | $5,617 | +9.4% |
| 1993 | $5,761 | +2.6% |
| 1994 | $5,126 | -11.0% |
| 1995 | $6,131 | +19.6% |
| 1996 | $6,011 | -2.0% |
| 1997 | $7,602 | +26.5% |
| 1998 | $7,883 | +3.7% |
| 1999 | $7,206 | -8.6% |
| 2000 | $8,948 | +24.2% |
| 2001 | $9,107 | +1.8% |
| 2002 | $5,441 | -40.3% |
| 2003 | $8,636 | +58.7% |
| 2004 | $10,317 | +19.5% |
| 2005 | $10,510 | +1.9% |
| 2006 | $14,652 | +39.4% |
| 2007 | $16,301 | +11.3% |
| 2008 | $12,184 | -25.3% |
| 2009 | $13,380 | +9.8% |
| 2010 | $17,024 | +27.2% |
| 2011 | $21,324 | +25.3% |
| 2012 | $22,101 | +3.6% |
| 2013 | $26,954 | +22.0% |
| 2014 | $35,956 | +33.4% |
| 2015 | $35,011 | -2.6% |
| 2016 | $43,918 | +25.4% |
| 2017 | $50,967 | +16.0% |
| 2018 | $52,173 | +2.4% |
| 2019 | $69,614 | +33.4% |
| 2020 | $67,411 | -3.2% |
| 2021 | $82,822 | +22.9% |
| 2022 | $76,661 | -7.4% |
| 2023 | $73,720 | -3.8% |
| 2024 | $88,123 | +19.5% |
| 2025 | $100,036 | +13.5% |
| 2026 | $110,472 | +10.4% |
Best and worst month-end to buy
The best single month-end close to have bought LNT was 1974-12 ($0.49): $1,000 then is $142,292 today. The worst was 2026-06 ($75.71): $1,000 then is $927.
FAQ
What would $1,000 in LNT be worth today?
A $1,000 investment in Alliant Energy Corporation (LNT) at the start of 1973 would be worth about $99,363 today, a total return of +9836.3%. Dividends are reinvested in these figures.
What were the best and worst years for LNT?
Alliant Energy Corporation (LNT)'s strongest calendar year since 1973 was 2003, a +58.7% return — $1,000 held through that year became about $1,587 by year-end. Its weakest year was 2002, at -40.3%.
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 LNT have grown?
Investing $100 at the end of every month since 1973-02 would have grown to about $2.15M on $64,300 invested.
Did LNT beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $69,018. LNT beat the S&P 500 by +44.0% 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
Alliant Energy Corporation (LNT) historical total-return data from 1973-02 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.