What if you'd held TMUS?
A $1,000 investment in T-Mobile US, Inc. (TMUS) at the month-end close of 2007-04 would be worth $4,103 at the close of 2026-08 — +310.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,200.
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 2007
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2007 | $1,000 | — |
| 2008 | $763 | -23.7% |
| 2009 | $392 | -48.6% |
| 2010 | $649 | +65.5% |
| 2011 | $446 | -31.3% |
| 2012 | $511 | +14.5% |
| 2013 | $1,044 | +104.3% |
| 2014 | $836 | -19.9% |
| 2015 | $1,214 | +45.2% |
| 2016 | $1,785 | +47.0% |
| 2017 | $1,970 | +10.4% |
| 2018 | $1,974 | +0.2% |
| 2019 | $2,433 | +23.3% |
| 2020 | $4,184 | +72.0% |
| 2021 | $3,599 | -14.0% |
| 2022 | $4,344 | +20.7% |
| 2023 | $4,996 | +15.0% |
| 2024 | $6,980 | +39.7% |
| 2025 | $6,521 | -6.6% |
| 2026 | $5,917 | -9.3% |
Best and worst month-end to buy
The best single month-end close to have bought TMUS was 2010-01 ($8.92): $1,000 then is $20,444 today. The worst was 2025-02 ($264): $1,000 then is $691.
FAQ
What would $1,000 in TMUS be worth today?
A $1,000 investment in T-Mobile US, Inc. (TMUS) at the start of 2007 would be worth about $4,103 today, a total return of +310.3%. Dividends are reinvested in these figures.
What were the best and worst years for TMUS?
T-Mobile US, Inc. (TMUS)'s strongest calendar year since 2007 was 2013, a +104.3% return — $1,000 held through that year became about $2,043 by year-end. Its weakest year was 2009, at -48.6%.
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 TMUS have grown?
Investing $100 at the end of every month since 2007-04 would have grown to about $119,326 on $23,300 invested.
Did TMUS beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $5,200. TMUS trailed the S&P 500 by +21.1% 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
T-Mobile US, Inc. (TMUS) historical total-return data from 2007-04 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.