T-Mobile US (WBO:TMUS) Shares Outstanding (Basic Average): 1,100 Mil (As of Mar. 2026)


WBO:TMUS T-Mobile US Inc WBO:TMUS
83 GF Score
Price €160.74
GF Value €195.65
Valuation Modestly Undervalued
! 2 Warning Signs
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What is T-Mobile US Shares Outstanding (Basic Average)?

T-Mobile US WBO:TMUS +1.45% 83 Shares Outstanding (Basic Average) is 1,100 Mil as of Mar. 2026. GuruFocus rates WBO:TMUS with a GF Score™ of 83/100 and a GF Value™ of €195.65 (Modestly Undervalued). The stock has 2 warning signs investors should review.

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. T-Mobile US's average basic shares outstanding for the quarter that ended in Mar. 2026 was 1,100 Mil.


T-Mobile US  (WBO:TMUS) Shares Outstanding (Basic Average) Explanation

A company may buy back shares or issue shares in any fiscal period. If a company buys back shares, we should observe that the total number of shares decline. If the company issues new shares, the number of shares outstanding increases.


Be Aware

Usually the presence of treasury shares and a history of buyback are good indicators that company has competitive advantage. But studies have shown that companies usually buy back at wrong time. Buying back shares below its intrinsic value increases value for remaining shareholders. Buying back overvalued shares destroys value for existing shareholders.


T-Mobile US Shares Outstanding (Basic Average) Related Terms


T-Mobile US Shares Outstanding (Basic Average) Historical Data

* Premium members only.

The historical data trend for T-Mobile US's Shares Outstanding (Basic Average) 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 Shares Outstanding (Basic Average) Chart

T-Mobile US Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Outstanding (Basic Average)
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1,247.16 1,249.76 1,185.12 1,169.20 1,127.98

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
Shares Outstanding (Basic Average) 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 1,140.54 1,132.76 1,123.75 1,110.71 1,100.17
WBO:TMUS
83GF Score
T-Mobile US Inc WBO:TMUS
Shares Outstanding (Basic Average) is just one metric. See GF Score™, valuation, warning signs, and more.
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T-Mobile US Shares Outstanding (Basic Average) Calculation

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. They have voting rights and represent ownership in the corporation by the person that holds the shares. They should be distinguished from treasury shares, which are shares held by the corporation itself, having no exercisable rights.

Shares outstanding can be calculated as either basic or fully diluted. The fully diluted shares outstanding count includes diluting securities, such as options, warrants or convertibles.

Please note: GuruFocus named Shares Outstanding (EOP) is the shares for that exact time point. It is usually used to calculate balance sheet related items, such as Book Value per Share, etc. While Shares Outstanding (Diluted Average) and Shares Outstanding (Basic Average) are the weighted average shares over a period of time (a year, a quarter, or so). They are usually used to calculate income statement or cashflow statement related items, such as Earnings per Share (Diluted), etc.

What does a Shares Outstanding (Basic Average) of 1,100 Mil mean?
T-Mobile US (WBO:TMUS) has a Shares Outstanding (Basic Average) of 1,100 Mil as of Mar. 2026. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on T-Mobile US and its competitors.
Is T-Mobile US's Shares Outstanding (Basic Average) too high?
T-Mobile US's current Shares Outstanding (Basic Average) is 1,100 Mil. Overall, T-Mobile US has a GF Score™ of 83/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does T-Mobile US's Shares Outstanding (Basic Average) compare to VZ and T?
T-Mobile US's Shares Outstanding (Basic Average) of 1,100 Mil can be compared against companies in the Telecommunication Services industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Outstanding (Basic Average) for a Telecommunication Services company?
A good Shares Outstanding (Basic Average) depends on the Telecommunication Services industry context. However, Shares Outstanding (Basic Average) should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shares Outstanding (Basic Average) mean?
A high Shares Outstanding (Basic Average) can signal that a stock is expensive relative to its fundamentals. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on T-Mobile US and its competitors. T-Mobile US's current Shares Outstanding (Basic Average) is 1,100 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is T-Mobile US stock overvalued right now?
Based on GuruFocus' analysis, T-Mobile US (WBO:TMUS) is currently considered Modestly Undervalued. The stock's GF Value™ is €195.65, compared to a current price of €160.74 — trading 17.8% below its estimated fair value. The current Shares Outstanding (Basic Average) is 1,100 Mil. T-Mobile US's overall GF Score™ is 83/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Outstanding (Basic Average) calculated?
Shares Outstanding (Basic Average) is calculated from a company's financial statements. For T-Mobile US (WBO:TMUS), the current Shares Outstanding (Basic Average) is 1,100 Mil as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

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

Based on GuruFocus' analysis, T-Mobile US stock appears to be undervalued. The current stock price of €160.74 is trading 17.8% below its estimated GF Value™ of €195.65. GuruFocus considers T-Mobile US to be Modestly Undervalued.

Key valuation signals for WBO:TMUS:

  • Shares Outstanding (Basic Average): 1,100 Mil
  • GF Value™: €195.65 vs. price of €160.74 (17.8% below fair value)
  • GF Score™: 83/100 with 2 warning signs

No single metric tells the full story. See the WBO:TMUS 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.
83GF Score

Get the complete analysis for WBO:TMUS

Shares Outstanding (Basic Average) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€160.74
Price
€195.65
GF Value