What if you'd held TBF?
A $1,000 investment in ProShares Short 20+ Year Treasury (TBF) at the month-end close of 2009-08 would be worth $613 at the close of 2026-08 — -38.7% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $7,552.
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 2026-08, dividends included.
Every year, $1,000 from 2009
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2009 | $1,000 | — |
| 2010 | $876 | -12.4% |
| 2011 | $617 | -29.5% |
| 2012 | $582 | -5.8% |
| 2013 | $651 | +12.0% |
| 2014 | $498 | -23.5% |
| 2015 | $490 | -1.6% |
| 2016 | $473 | -3.4% |
| 2017 | $433 | -8.5% |
| 2018 | $447 | +3.2% |
| 2019 | $398 | -10.9% |
| 2020 | $321 | -19.3% |
| 2021 | $325 | +1.3% |
| 2022 | $463 | +42.4% |
| 2023 | $474 | +2.4% |
| 2024 | $552 | +16.3% |
| 2025 | $559 | +1.3% |
| 2026 | $590 | +5.5% |
Best and worst month-end to buy
The best single month-end close to have bought TBF was 2020-07 ($12.86): $1,000 then is $1,959 today. The worst was 2009-12 ($42.73): $1,000 then is $590.
FAQ
What would $1,000 in TBF be worth today?
A $1,000 investment in ProShares Short 20+ Year Treasury (TBF) at the start of 2009 would be worth about $613 today, a total return of -38.7%. Dividends are reinvested in these figures.
What were the best and worst years for TBF?
ProShares Short 20+ Year Treasury (TBF)'s strongest calendar year since 2009 was 2022, a +42.4% return — $1,000 held through that year became about $1,424 by year-end. Its weakest year was 2011, at -29.5%.
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 TBF have grown?
Investing $100 at the end of every month since 2009-08 would have grown to about $24,603 on $20,500 invested.
Did TBF beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $7,552. TBF trailed the S&P 500 by +91.9% 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 20+ Year Treasury (TBF) historical total-return data from 2009-08 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. 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 (Yahoo Finance): 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 Yahoo Finance. As of 2026-08. Not financial advice.