T-Mobile US (MIL:1TMUS) Beta: N/A (As of Jun. 25, 2026)


MIL:1TMUS T-Mobile US Inc MIL:1TMUS
58 GF Score
Price €158.56
GF Value €197.07
Valuation Modestly Undervalued
! 2 Warning Signs
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What is T-Mobile US Beta?

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. As of today (2026-06-25), T-Mobile US's Beta is Not available.

T-Mobile US  (MIL:1TMUS) Beta Explanation

Beta is a measure of the volatility, or systematic risk, of a security or a portfolio in comparison to the market as a whole. We usually compare beta to 1. A beta of 1 indicates that the security's price will move with the market. A beta of less than 1 means that the security will be less volatile than the market. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

Beta is primarily used in the Capital Asset Pricing Model (CAPM) to calculate the Cost of Equity, which can be used in the calculation of WACC %. The formula of Cost of Equity is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)

T-Mobile US Beta Related Terms

T-Mobile US Beta Historical Data

* Premium members only.

The historical data trend for T-Mobile US's Beta can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

T-Mobile US Beta Chart

T-Mobile US Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beta
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

T-Mobile US Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Beta Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00
MIL:1TMUS
58GF Score
T-Mobile US Inc MIL:1TMUS
Beta is just one metric. See GF Score™, valuation, warning signs, and more.
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T-Mobile US Beta Calculation

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. A stock's beta can be calculated by dividing the product of the covariance of the individual stock's returns and the market's returns by the variance of the market's returns over a specified period. Basically, GuruFocus uses the returns calculated over three-year period.

Is T-Mobile US (MIL:1TMUS) Overvalued in 2026?

Based on GuruFocus' analysis, T-Mobile US stock appears to be undervalued. The current stock price of €158.56 is trading 19.5% below its estimated GF Value™ of €197.07. GuruFocus considers T-Mobile US to be Modestly Undervalued.

Key valuation signals for MIL:1TMUS:

  • Beta: N/A
  • GF Value™: €197.07 vs. price of €158.56 (19.5% below fair value)
  • GF Score™: 58/100 with 2 warning signs

No single metric tells the full story. See the MIL:1TMUS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

T-Mobile US Business Description

Address 12920 SE 38th Street, Bellevue, WA, USA, 98006-1350
Deutsche Telekom merged its T-Mobile USA unit with prepaid specialist MetroPCS in 2013, and that firm merged with Sprint in 2020, creating the second-largest wireless carrier in the US. T-Mobile now serves about 86 million postpaid and 26 million prepaid phone customers, equal to around 30% of the US retail wireless market. The firm entered the fixed-wireless broadband market aggressively in 2021 and now serves 8 million residential and business customers with its wireless network. It also serves 1 million fiber broadband customers through joint ventures with fiber network owners. T-Mobile owns a stake in these firms, which provide wholesale access to their networks. In addition, T-Mobile provides wholesale services to wireless resellers.
58GF Score

Get the complete analysis for MIL:1TMUS

Beta is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€158.56
Price
€197.07
GF Value