What if you'd held SDD?
A $1,000 investment in ProShares UltraShort SmallCap600 (SDD) at the month-end close of 2007-01 would be worth $1.68 at the close of 2026-09 — -99.8% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $7,795.
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 2007
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2007 | $1,000 | — |
| 2008 | $1,254 | +25.4% |
| 2009 | $538 | -57.1% |
| 2010 | $278 | -48.4% |
| 2011 | $197 | -29.2% |
| 2012 | $132 | -33.0% |
| 2013 | $61.00 | -53.7% |
| 2014 | $49.57 | -18.7% |
| 2015 | $47.48 | -4.2% |
| 2016 | $26.75 | -43.7% |
| 2017 | $19.94 | -25.5% |
| 2018 | $22.76 | +14.1% |
| 2019 | $14.49 | -36.3% |
| 2020 | $6.51 | -55.1% |
| 2021 | $3.47 | -46.6% |
| 2022 | $4.19 | +20.5% |
| 2023 | $3.10 | -26.0% |
| 2024 | $2.68 | -13.6% |
| 2025 | $2.28 | -14.8% |
| 2026 | $1.57 | -31.3% |
Best and worst month-end to buy
The best single month-end close to have bought SDD was 2026-06 ($8.00): $1,000 then is $1,051 today. The worst was 2009-02 ($10,443): $1,000 then is $0.81.
FAQ
What would $1,000 in SDD be worth today?
A $1,000 investment in ProShares UltraShort SmallCap600 (SDD) at the start of 2007 would be worth about $1.68 today, a total return of -99.8%. Dividends are reinvested in these figures.
What were the best and worst years for SDD?
ProShares UltraShort SmallCap600 (SDD)'s strongest calendar year since 2007 was 2008, a +25.4% return — $1,000 held through that year became about $1,254 by year-end. Its weakest year was 2009, at -57.1%.
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 SDD have grown?
Investing $100 at the end of every month since 2007-01 would have grown to about $4,221 on $23,700 invested.
Did SDD 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 $7,795. SDD 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
ProShares UltraShort SmallCap600 (SDD) historical total-return data from 2007-01 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.