What if you'd held CLIR?
A $1,000 investment in ClearSign Technologies Corporation (CLIR) at the month-end close of 2012-04 would be worth $80.79 at the close of 2026-09 — -91.9% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $7,162.
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 2026-09, dividends included.
Every year, $1,000 from 2012
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2012 | $1,000 | — |
| 2013 | $2,366 | +136.6% |
| 2014 | $1,514 | -36.0% |
| 2015 | $1,002 | -33.8% |
| 2016 | $702 | -29.9% |
| 2017 | $744 | +5.9% |
| 2018 | $211 | -71.7% |
| 2019 | $157 | -25.5% |
| 2020 | $605 | +285.5% |
| 2021 | $285 | -52.9% |
| 2022 | $112 | -60.9% |
| 2023 | $229 | +105.6% |
| 2024 | $298 | +29.7% |
| 2025 | $116 | -61.1% |
| 2026 | $80.79 | -30.2% |
Best and worst month-end to buy
The best single month-end close to have bought CLIR was 2026-06 ($3.67): $1,000 then is $1,065 today. The worst was 2013-12 ($115): $1,000 then is $34.15.
FAQ
What would $1,000 in CLIR be worth today?
A $1,000 investment in ClearSign Technologies Corporation (CLIR) at the start of 2012 would be worth about $80.79 today, a total return of -91.9%. Dividends are reinvested in these figures.
What were the best and worst years for CLIR?
ClearSign Technologies Corporation (CLIR)'s strongest calendar year since 2012 was 2020, a +285.5% return — $1,000 held through that year became about $3,855 by year-end. Its weakest year was 2018, at -71.7%.
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 CLIR have grown?
Investing $100 at the end of every month since 2012-04 would have grown to about $4,709 on $17,400 invested.
Did CLIR beat the S&P 500?
Over the same period, $1,000 in the S&P 500 with dividends reinvested (the S&P 500 Total Return index) would be worth $7,162. CLIR trailed the S&P 500 by +98.9% 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
ClearSign Technologies Corporation (CLIR) historical total-return data from 2012-04 to 2026-09, reduced to month-end closes for the tables above.
Returns use adjusted close prices — adjusted for stock splits and reinvested dividends, the same convention used by major brokerages. End-of-day and live prices come from EODHD; parts of the deep historical series are carried over from Yahoo Finance data. 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 (EODHD): 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 EODHD and Yahoo Finance. As of 2026-09-04. Not financial advice.