What if you'd held PMN?
A $1,000 investment in ProMIS Neurosciences Inc. (PMN) at the month-end close of 2007-01 would be worth $7.70 at the close of 2026-08 — -99.2% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,359.
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 2007
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2007 | $1,000 | — |
| 2008 | $380 | -62.0% |
| 2009 | $455 | +19.6% |
| 2010 | $322 | -29.1% |
| 2011 | $223 | -30.8% |
| 2012 | $322 | +44.4% |
| 2013 | $273 | -15.4% |
| 2014 | $124 | -54.5% |
| 2015 | $33.06 | -73.3% |
| 2016 | $82.64 | +150.0% |
| 2017 | $140 | +70.0% |
| 2018 | $165 | +17.6% |
| 2019 | $107 | -35.0% |
| 2020 | $66.12 | -38.5% |
| 2021 | $90.91 | +37.5% |
| 2022 | $59.78 | -34.2% |
| 2023 | $15.84 | -73.5% |
| 2024 | $13.09 | -17.4% |
| 2025 | $3.76 | -71.2% |
| 2026 | $8.08 | +114.6% |
Best and worst month-end to buy
The best single month-end close to have bought PMN was 2025-11 ($6.76): $1,000 then is $2,169 today. The worst was 2007-04 ($2,580): $1,000 then is $5.68.
FAQ
What would $1,000 in PMN be worth today?
A $1,000 investment in ProMIS Neurosciences Inc. (PMN) at the start of 2007 would be worth about $7.70 today, a total return of -99.2%. Dividends are reinvested in these figures.
What were the best and worst years for PMN?
ProMIS Neurosciences Inc. (PMN)'s strongest calendar year since 2007 was 2016, a +150.0% return — $1,000 held through that year became about $2,500 by year-end. Its weakest year was 2023, at -73.5%.
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 PMN have grown?
Investing $100 at the end of every month since 2007-01 would have grown to about $4,258 on $23,600 invested.
Did PMN beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $5,359. PMN trailed the S&P 500 by +99.9% 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
ProMIS Neurosciences Inc. (PMN) historical total-return data from 2007-01 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.