What if you'd held OIA?
A $1,000 investment in Invesco Municipal Income Opportunities Trust (OIA) at the month-end close of 1988-09 would be worth $6,809 at the close of 2026-08 — +580.9% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $28,348.
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 1988
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1988 | $1,000 | — |
| 1989 | $1,159 | +15.9% |
| 1990 | $1,032 | -11.0% |
| 1991 | $1,148 | +11.2% |
| 1992 | $1,071 | -6.7% |
| 1993 | $1,191 | +11.3% |
| 1994 | $1,209 | +1.5% |
| 1995 | $1,455 | +20.3% |
| 1996 | $1,519 | +4.4% |
| 1997 | $1,749 | +15.1% |
| 1998 | $2,075 | +18.7% |
| 1999 | $1,742 | -16.1% |
| 2000 | $1,956 | +12.3% |
| 2001 | $2,024 | +3.5% |
| 2002 | $2,089 | +3.2% |
| 2003 | $2,144 | +2.6% |
| 2004 | $2,421 | +12.9% |
| 2005 | $2,910 | +20.2% |
| 2006 | $3,480 | +19.6% |
| 2007 | $2,758 | -20.7% |
| 2008 | $1,893 | -31.4% |
| 2009 | $2,729 | +44.1% |
| 2010 | $2,911 | +6.7% |
| 2011 | $3,357 | +15.3% |
| 2012 | $3,911 | +16.5% |
| 2013 | $3,528 | -9.8% |
| 2014 | $4,220 | +19.6% |
| 2015 | $4,667 | +10.6% |
| 2016 | $4,833 | +3.6% |
| 2017 | $5,682 | +17.6% |
| 2018 | $5,216 | -8.2% |
| 2019 | $6,220 | +19.2% |
| 2020 | $6,553 | +5.4% |
| 2021 | $6,966 | +6.3% |
| 2022 | $5,736 | -17.7% |
| 2023 | $6,152 | +7.2% |
| 2024 | $6,032 | -2.0% |
| 2025 | $6,517 | +8.0% |
| 2026 | $6,802 | +4.4% |
Best and worst month-end to buy
The best single month-end close to have bought OIA was 1988-09 ($0.89): $1,000 then is $6,809 today. The worst was 2021-08 ($6.46): $1,000 then is $936.
FAQ
What would $1,000 in OIA be worth today?
A $1,000 investment in Invesco Municipal Income Opportunities Trust (OIA) at the start of 1988 would be worth about $6,809 today, a total return of +580.9%. Dividends are reinvested in these figures.
What were the best and worst years for OIA?
Invesco Municipal Income Opportunities Trust (OIA)'s strongest calendar year since 1988 was 2009, a +44.1% return — $1,000 held through that year became about $1,441 by year-end. Its weakest year was 2008, at -31.4%.
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 OIA have grown?
Investing $100 at the end of every month since 1988-09 would have grown to about $131,859 on $45,600 invested.
Did OIA beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $28,348. OIA trailed the S&P 500 by +76.0% 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
Invesco Municipal Income Opportunities Trust (OIA) historical total-return data from 1988-09 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.