What if you'd held IOO?
A $1,000 investment in iShares Global 100 ETF (IOO) at the month-end close of 2019-10 would be worth $2,845 at the close on 2026-10-16: a +184.5% price return. Through September 2026, the latest month the fund has reported, the same $1,000 became $2,835 in IOO and $2,789 in an S&P 500 index fund (TSP C Fund). The fund figure includes reinvested dividends; the stock figure does not, so the comparison favors the fund.
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 and held to the latest close.
Every year, $1,000 from 2019
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2019 | $1,000 | — |
| 2020 | $1,167 | +16.7% |
| 2021 | $1,454 | +24.6% |
| 2022 | $1,183 | -18.7% |
| 2023 | $1,499 | +26.8% |
| 2024 | $1,876 | +25.1% |
| 2025 | $2,355 | +25.6% |
| 2026 | $2,689 | +14.2% |
Best and worst month to buy
The best month to have bought IOO was 2020-03, at a close of $44.77: $1,000 then is $3,229 today. The worst was 2026-10, at $145: $1,000 then is $1,000.
FAQ
What would $1,000 in IOO be worth today?
About $2,845 at the latest close, a price return of +184.5%. That is $1,000 put into IOO at the 2019-10 month-end close, the first in this price history.
What were the best and worst years for IOO?
IOO's best calendar year since 2019 was 2023, with a +26.8% return: $1,000 invested at the start of that year became about $1,268. Its worst year was 2022, at -18.7%.
Does the calculator include dividends and splits?
Splits only. Price return: adjusted for stock splits, dividends not included. Prices are split-adjusted automatically; a ticker whose history we could not adjust with confidence starts later or is not shown.
How much would $100 per month in IOO have grown?
To about $15,942 from $8,500 invested, putting in $100 at every monthly close since 2019-10.
Did IOO beat the S&P 500?
Yes. From the October 2019 month-end through September 2026, IOO beat an S&P 500 index fund by 1.6%: $1,000 in the fund (the TSP C Fund, dividends included) became $2,789, and $1,000 in IOO (price only) became $2,835. The fund's monthly returns are published at tsp.gov.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number here is a historical calculation, and past performance never guarantees future results.
Methodology
The figures on this page use IOO's historical price data from 2019-10 to 2026-10. The tables and the calculator above use month-end closes.
Prices come from IEX Historical Data. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest close. Amounts in other currencies are converted at month-end exchange rates published by the European Central Bank and, for earlier years, the Federal Reserve: into US dollars at the buy date's rate and back at the sell date's rate, so the return includes the currency move.
Prices are the last regular-session trade on IEX (Investors Exchange) each day, which can differ slightly from the official close. Month-end closes miss the highs and lows inside a month. Figures ignore taxes, fees and the currency effects of non-USD listings.
What if you'd held…
Prices as of the last IEX trade on 2026-10-16. Data delayed end-of-day.