What if you'd held IEO?
A $1,000 investment in iShares U.S. Oil & Gas Exploration & Production ETF (IEO) at the month-end close of 2006-05 would be worth $4,028 at the close of 2026-09 — +302.8% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $8,933.
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 2006
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2006 | $1,000 | — |
| 2007 | $1,396 | +39.6% |
| 2008 | $811 | -41.9% |
| 2009 | $1,145 | +41.1% |
| 2010 | $1,358 | +18.6% |
| 2011 | $1,314 | -3.2% |
| 2012 | $1,370 | +4.3% |
| 2013 | $1,792 | +30.8% |
| 2014 | $1,572 | -12.3% |
| 2015 | $1,186 | -24.6% |
| 2016 | $1,482 | +25.0% |
| 2017 | $1,486 | +0.3% |
| 2018 | $1,197 | -19.4% |
| 2019 | $1,313 | +9.6% |
| 2020 | $883 | -32.8% |
| 2021 | $1,549 | +75.5% |
| 2022 | $2,445 | +57.8% |
| 2023 | $2,533 | +3.6% |
| 2024 | $2,496 | -1.5% |
| 2025 | $2,550 | +2.1% |
| 2026 | $3,997 | +56.8% |
Best and worst month-end to buy
The best single month-end close to have bought IEO was 2020-03 ($18.99): $1,000 then is $7,302 today. The worst was 2026-09 ($139): $1,000 then is $1,000.
FAQ
What would $1,000 in IEO be worth today?
A $1,000 investment in iShares U.S. Oil & Gas Exploration & Production ETF (IEO) at the start of 2006 would be worth about $4,028 today, a total return of +302.8%. Dividends are reinvested in these figures.
What were the best and worst years for IEO?
iShares U.S. Oil & Gas Exploration & Production ETF (IEO)'s strongest calendar year since 2006 was 2021, a +75.5% return — $1,000 held through that year became about $1,755 by year-end. Its weakest year was 2008, at -41.9%.
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 IEO have grown?
Investing $100 at the end of every month since 2006-05 would have grown to about $69,476 on $24,500 invested.
Did IEO 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 $8,933. IEO trailed the S&P 500 by +54.9% 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
iShares U.S. Oil & Gas Exploration & Production ETF (IEO) historical total-return data from 2006-05 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.