What if you'd held FIBK?
A $1,000 investment in First Interstate BancSystem, Inc. (FIBK) at the month-end close of 2010-03 would be worth $4,478 at the close of 2026-08 — +347.8% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $6,591.
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 2010
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2010 | $1,000 | — |
| 2011 | $887 | -11.3% |
| 2012 | $1,085 | +22.4% |
| 2013 | $2,032 | +87.3% |
| 2014 | $2,042 | +0.5% |
| 2015 | $2,199 | +7.7% |
| 2016 | $3,318 | +50.9% |
| 2017 | $3,202 | -3.5% |
| 2018 | $3,002 | -6.2% |
| 2019 | $3,549 | +18.2% |
| 2020 | $3,662 | +3.2% |
| 2021 | $3,794 | +3.6% |
| 2022 | $3,763 | -0.8% |
| 2023 | $3,207 | -14.8% |
| 2024 | $3,623 | +13.0% |
| 2025 | $4,110 | +13.4% |
| 2026 | $4,666 | +13.5% |
Best and worst month-end to buy
The best single month-end close to have bought FIBK was 2011-09 ($5.85): $1,000 then is $6,468 today. The worst was 2026-06 ($38.09): $1,000 then is $993.
FAQ
What would $1,000 in FIBK be worth today?
A $1,000 investment in First Interstate BancSystem, Inc. (FIBK) at the start of 2010 would be worth about $4,478 today, a total return of +347.8%. Dividends are reinvested in these figures.
What were the best and worst years for FIBK?
First Interstate BancSystem, Inc. (FIBK)'s strongest calendar year since 2010 was 2013, a +87.3% return — $1,000 held through that year became about $1,873 by year-end. Its weakest year was 2023, at -14.8%.
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 FIBK have grown?
Investing $100 at the end of every month since 2010-03 would have grown to about $45,060 on $19,800 invested.
Did FIBK beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $6,591. FIBK trailed the S&P 500 by +32.1% 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
First Interstate BancSystem, Inc. (FIBK) historical total-return data from 2010-03 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.