What if you'd held UDOW?
A $1,000 investment in ProShares UltraPro Dow30 (UDOW) at the month-end close of 2010-02 would be worth $44,394 at the close of 2026-09 — +4339.4% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $9,472.
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 2010
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2010 | $1,000 | — |
| 2011 | $1,093 | +9.3% |
| 2012 | $1,379 | +26.2% |
| 2013 | $2,859 | +107.3% |
| 2014 | $3,604 | +26.0% |
| 2015 | $3,295 | -8.6% |
| 2016 | $4,850 | +47.2% |
| 2017 | $9,652 | +99.0% |
| 2018 | $7,348 | -23.9% |
| 2019 | $12,877 | +75.2% |
| 2020 | $10,670 | -17.1% |
| 2021 | $17,678 | +65.7% |
| 2022 | $11,952 | -32.4% |
| 2023 | $15,859 | +32.7% |
| 2024 | $20,374 | +28.5% |
| 2025 | $25,361 | +24.5% |
| 2026 | $32,269 | +27.2% |
Best and worst month-end to buy
The best single month-end close to have bought UDOW was 2010-06 ($1.37): $1,000 then is $53,467 today. The worst was 2026-09 ($73.25): $1,000 then is $1,000.
FAQ
What would $1,000 in UDOW be worth today?
A $1,000 investment in ProShares UltraPro Dow30 (UDOW) at the start of 2010 would be worth about $44,394 today, a total return of +4339.4%. Dividends are reinvested in these figures.
What were the best and worst years for UDOW?
ProShares UltraPro Dow30 (UDOW)'s strongest calendar year since 2010 was 2013, a +107.3% return — $1,000 held through that year became about $2,073 by year-end. Its weakest year was 2022, at -32.4%.
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 UDOW have grown?
Investing $100 at the end of every month since 2010-02 would have grown to about $196,815 on $20,000 invested.
Did UDOW 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 $9,472. UDOW beat the S&P 500 by +368.7% 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
ProShares UltraPro Dow30 (UDOW) historical total-return data from 2010-02 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.