What if you'd held CLNE?
A $1,000 investment in Clean Energy Fuels Corp. (CLNE) at the month-end close of 2007-05 would be worth $127 at the close of 2026-08 — -87.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,036.
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 | $399 | -60.1% |
| 2009 | $1,018 | +155.1% |
| 2010 | $914 | -10.2% |
| 2011 | $823 | -10.0% |
| 2012 | $822 | -0.1% |
| 2013 | $851 | +3.5% |
| 2014 | $330 | -61.2% |
| 2015 | $238 | -28.0% |
| 2016 | $189 | -20.6% |
| 2017 | $134 | -29.0% |
| 2018 | $114 | -15.3% |
| 2019 | $155 | +36.0% |
| 2020 | $519 | +235.9% |
| 2021 | $405 | -22.0% |
| 2022 | $343 | -15.2% |
| 2023 | $253 | -26.3% |
| 2024 | $166 | -34.5% |
| 2025 | $139 | -16.3% |
| 2026 | $104 | -25.2% |
Best and worst month-end to buy
The best single month-end close to have bought CLNE was 2018-02 ($1.39): $1,000 then is $1,129 today. The worst was 2010-03 ($22.78): $1,000 then is $68.92.
FAQ
What would $1,000 in CLNE be worth today?
A $1,000 investment in Clean Energy Fuels Corp. (CLNE) at the start of 2007 would be worth about $127 today, a total return of -87.3%. Dividends are reinvested in these figures.
What were the best and worst years for CLNE?
Clean Energy Fuels Corp. (CLNE)'s strongest calendar year since 2007 was 2020, a +235.9% return — $1,000 held through that year became about $3,359 by year-end. Its weakest year was 2014, at -61.2%.
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 CLNE have grown?
Investing $100 at the end of every month since 2007-05 would have grown to about $8,541 on $23,200 invested.
Did CLNE beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $5,036. CLNE trailed the S&P 500 by +97.5% 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
Clean Energy Fuels Corp. (CLNE) historical total-return data from 2007-05 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.