How Much Could You Lose In T-Mobile Stock?
T-Mobile US (TMUS) stock fell 16.7% over the past month, diverging from a 2.0% gain for the S&P 500. News reports tied a sharp drop on October 9 to a SpaceX spectrum deal, and AT&T, Verizon and Comcast each lost more than 12% over the same month. You may still think of a wireless carrier as a stock that holds up in a selloff. So how far has T-Mobile stock fallen in past market selloffs?
T-Mobile Stock’s 54% Drop In 2011, Much Of It In One Day
T-Mobile stock recorded its steepest fall in a market shock since 2007 during the US debt ceiling crisis. From July to October 2011, the shares fell 54%, compared with an 18% decline for the S&P 500 over the same months. Market pressure alone does not fully explain the drop. The shares fell from $20.38 to $12.92 on August 2, 2011, a 37% drop in one day.
The 2008-2009 financial crisis marked the next steepest drop. T-Mobile stock fell 47% during that time, a milder decline than the 53% loss for the S&P 500. Over a longer stretch, from a peak in 2007 to a low in 2010, the stock fell 86%.
Historically, T-Mobile stock has traded through 15 market shocks since 2007. A typical event has been much milder. The stock fell 18.0% on average across these shocks, compared with 15.8% for the index. On average, the shares have dropped slightly more than the broader market.
How Long Did T-Mobile Stock Take To Recover?
The median recovery time from a low was 3.7 months, though four rebounds took more than a year. T-Mobile ultimately returned to its pre-shock high after 13 of the 14 shocks in which it fell. The stock needed 20.6 months to recover from the 2011 decline, a window that includes the one-day break in price. Following the credit crunch of summer 2007, a full recovery required 111.2 months.
Only one recovery remains unfinished. T-Mobile stock is still 43% below the high it reached before the 2025 tariff shock.
Which Of T-Mobile’s Numbers Are Getting Worse?
Several underlying metrics are weakening. T-Mobile reported a slipping profit margin, slower sales growth in the latest quarter, and elevated debt compared with the broader market. The company retained 20% of its sales as operating profit over the past twelve months, down from 23% a year earlier. Sales grew 7.9% in the latest quarter from a year before, a deceleration from the 10.6% growth in the prior quarter. T-Mobile currently carries debt equal to 72.6% of its market value, against 21% for the S&P 500.
Looking toward the third quarter, whose results are still pending, management forecast fewer net new accounts and slower profit growth. During the July 23, 2026 call, the company projected about 250,000 net new postpaid accounts, down from a net 277,000 in the second quarter. Management also forecast an 8% year-over-year increase in core adjusted EBITDA, a profit measure the company guides to. This marks a step down from the 12% growth reported during that call. Management said the slowdown reflects the timing of last year’s acquisitions.
Management also said changes to older rate plans in the third quarter would temporarily raise the number of accounts that leave. The company noted that smartphones are getting more expensive and that it does not intend to raise its subsidies, so customers will pay more.
When the company reports on October 28, 2026, the key metric to watch will be the net number of postpaid accounts T-Mobile added in the third quarter.
How To Act On TMUS?
Now you know TMUS better. And that’s our purpose: to make you informed before you invest your money. However, making a bet on a single stock carries its own risks.
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