What if you'd held EFOI?
A $1,000 investment in Energy Focus, Inc. (EFOI) at the month-end close of 1994-08 would be worth $1.42 at the close of 2026-08 — -99.9% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $16,211.
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 1994
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1994 | $1,000 | — |
| 1995 | $674 | -32.6% |
| 1996 | $761 | +12.9% |
| 1997 | $978 | +28.6% |
| 1998 | $696 | -28.9% |
| 1999 | $1,000 | +43.7% |
| 2000 | $1,293 | +29.3% |
| 2001 | $539 | -58.3% |
| 2002 | $614 | +13.9% |
| 2003 | $1,183 | +92.6% |
| 2004 | $1,746 | +47.6% |
| 2005 | $1,487 | -14.8% |
| 2006 | $1,132 | -23.9% |
| 2007 | $1,261 | +11.4% |
| 2008 | $200 | -84.1% |
| 2009 | $119 | -40.3% |
| 2010 | $177 | +48.4% |
| 2011 | $37.29 | -78.9% |
| 2012 | $29.83 | -20.0% |
| 2013 | $87.62 | +193.8% |
| 2014 | $91.91 | +4.9% |
| 2015 | $256 | +178.9% |
| 2016 | $79.23 | -69.1% |
| 2017 | $45.68 | -42.4% |
| 2018 | $11.56 | -74.7% |
| 2019 | $8.76 | -24.2% |
| 2020 | $15.03 | +71.5% |
| 2021 | $15.92 | +6.0% |
| 2022 | $1.19 | -92.5% |
| 2023 | $0.80 | -32.6% |
| 2024 | $0.63 | -21.2% |
| 2025 | $1.23 | +94.1% |
| 2026 | $1.45 | +17.7% |
Best and worst month-end to buy
The best single month-end close to have bought EFOI was 2024-09 ($1.19): $1,000 then is $2,286 today. The worst was 2005-07 ($4,587): $1,000 then is $0.59.
FAQ
What would $1,000 in EFOI be worth today?
A $1,000 investment in Energy Focus, Inc. (EFOI) at the start of 1994 would be worth about $1.42 today, a total return of -99.9%. Dividends are reinvested in these figures.
What were the best and worst years for EFOI?
Energy Focus, Inc. (EFOI)'s strongest calendar year since 1994 was 2013, a +193.8% return — $1,000 held through that year became about $2,938 by year-end. Its weakest year was 2022, at -92.5%.
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 EFOI have grown?
Investing $100 at the end of every month since 1994-08 would have grown to about $7,543 on $38,500 invested.
Did EFOI beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $16,211. EFOI trailed the S&P 500 by +100.0% 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
Energy Focus, Inc. (EFOI) historical total-return data from 1994-08 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.