What if you'd held ACIU?
A $1,000 investment in AC Immune SA (ACIU) at the month-end close of 2016-09 would be worth $157 at the close of 2026-08 — -84.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $3,555.
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 2016
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2016 | $1,000 | — |
| 2017 | $986 | -1.4% |
| 2018 | $728 | -26.2% |
| 2019 | $656 | -9.8% |
| 2020 | $398 | -39.3% |
| 2021 | $381 | -4.3% |
| 2022 | $157 | -58.8% |
| 2023 | $385 | +145.1% |
| 2024 | $208 | -46.0% |
| 2025 | $242 | +16.3% |
| 2026 | $199 | -17.8% |
Best and worst month-end to buy
The best single month-end close to have bought ACIU was 2025-05 ($1.71): $1,000 then is $1,509 today. The worst was 2016-09 ($16.47): $1,000 then is $157.
FAQ
What would $1,000 in ACIU be worth today?
A $1,000 investment in AC Immune SA (ACIU) at the start of 2016 would be worth about $157 today, a total return of -84.3%. Dividends are reinvested in these figures.
What were the best and worst years for ACIU?
AC Immune SA (ACIU)'s strongest calendar year since 2016 was 2023, a +145.1% return — $1,000 held through that year became about $2,451 by year-end. Its weakest year was 2022, at -58.8%.
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 ACIU have grown?
Investing $100 at the end of every month since 2016-09 would have grown to about $7,385 on $12,000 invested.
Did ACIU beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $3,555. ACIU trailed the S&P 500 by +95.6% 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
AC Immune SA (ACIU) historical total-return data from 2016-09 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.