What if you'd held TBX?
A $1,000 investment in ProShares Short 7 10 Year Treasury (TBX) at the month-end close of 2011-04 would be worth $877 at the close of 2026-09 — -12.3% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $7,502.
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 2011
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2011 | $1,000 | — |
| 2012 | $946 | -5.4% |
| 2013 | $990 | +4.6% |
| 2014 | $890 | -10.1% |
| 2015 | $862 | -3.2% |
| 2016 | $848 | -1.5% |
| 2017 | $827 | -2.6% |
| 2018 | $837 | +1.3% |
| 2019 | $793 | -5.2% |
| 2020 | $714 | -10.0% |
| 2021 | $727 | +1.7% |
| 2022 | $859 | +18.3% |
| 2023 | $894 | +4.0% |
| 2024 | $970 | +8.5% |
| 2025 | $959 | -1.1% |
| 2026 | $1,011 | +5.5% |
Best and worst month-end to buy
The best single month-end close to have bought TBX was 2020-07 ($20.22): $1,000 then is $1,436 today. The worst was 2011-04 ($33.11): $1,000 then is $877.
FAQ
What would $1,000 in TBX be worth today?
A $1,000 investment in ProShares Short 7 10 Year Treasury (TBX) at the start of 2011 would be worth about $877 today, a total return of -12.3%. Dividends are reinvested in these figures.
What were the best and worst years for TBX?
ProShares Short 7 10 Year Treasury (TBX)'s strongest calendar year since 2011 was 2022, a +18.3% return — $1,000 held through that year became about $1,183 by year-end. Its weakest year was 2014, at -10.1%.
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 TBX have grown?
Investing $100 at the end of every month since 2011-04 would have grown to about $21,723 on $18,600 invested.
Did TBX 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 $7,502. TBX trailed the S&P 500 by +88.3% 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 Short 7 10 Year Treasury (TBX) historical total-return data from 2011-04 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.