What if you'd held SDS?
A $1,000 investment in ProShares UltraShort S&P500 (SDS) at the month-end close of 2006-07 would be worth $3.11 at the close of 2026-09 — -99.7% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $8,866.
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 | $963 | -3.7% |
| 2008 | $1,546 | +60.5% |
| 2009 | $764 | -50.6% |
| 2010 | $518 | -32.2% |
| 2011 | $420 | -18.8% |
| 2012 | $295 | -29.9% |
| 2013 | $162 | -45.2% |
| 2014 | $120 | -25.7% |
| 2015 | $109 | -9.6% |
| 2016 | $82.30 | -24.2% |
| 2017 | $55.95 | -32.0% |
| 2018 | $59.32 | +6.0% |
| 2019 | $34.90 | -41.2% |
| 2020 | $17.42 | -50.1% |
| 2021 | $9.93 | -43.0% |
| 2022 | $12.97 | +30.7% |
| 2023 | $8.88 | -31.5% |
| 2024 | $6.27 | -29.5% |
| 2025 | $4.59 | -26.8% |
| 2026 | $3.68 | -19.7% |
Best and worst month-end to buy
The best single month-end close to have bought SDS was 2026-09 ($54.12): $1,000 then is $1,000 today. The worst was 2009-02 ($31,604): $1,000 then is $1.71.
FAQ
What would $1,000 in SDS be worth today?
A $1,000 investment in ProShares UltraShort S&P500 (SDS) at the start of 2006 would be worth about $3.11 today, a total return of -99.7%. Dividends are reinvested in these figures.
What were the best and worst years for SDS?
ProShares UltraShort S&P500 (SDS)'s strongest calendar year since 2006 was 2008, a +60.5% return — $1,000 held through that year became about $1,605 by year-end. Its weakest year was 2009, at -50.6%.
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 SDS have grown?
Investing $100 at the end of every month since 2006-07 would have grown to about $3,998 on $24,300 invested.
Did SDS 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 $8,866. SDS 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 S&P500 (SDS) historical total-return data from 2006-07 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.