T-Mobile US (TMUS) - Market capitalization

Market cap: $221.94 Billion USD

As of February 2026 T-Mobile US has a market cap of $221.94 Billion USD. This makes T-Mobile US the world's 75th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of T-Mobile US from 2007 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	$221.94 B	-1.89%
2025	$226.20 B	-12.6%
2024	$258.81 B	39.58%
2023	$185.41 B	6.45%
2022	$174.18 B	20.24%
2021	$144.86 B	-13.45%
2020	$167.37 B	149.07%
2019	$67.19 B	24.26%
2018	$54.07 B	2.35%
2017	$52.83 B	11.5%
2016	$47.38 B	48.02%
2015	$32.01 B	47.18%
2014	$21.75 B	-19.36%
2013	$26.97 B	644.54%
2012	$3.62 B	15.22%
2011	$3.14 B	-29.89%
2010	$4.48 B	66.64%
2009	$2.69 B	-48.25%
2008	$5.20 B	-23.2%
2007	$6.77 B

End of Day market cap according to different sources

On Jan 31st, 2026 the market cap of T-Mobile US was reported to be:

$220.58 Billion USD

by Nasdaq

$221.94 Billion USD

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
AT&T T	$185.81 B	-16.28%	🇺🇸 USA
Verizon VZ	$187.71 B	-15.42%	🇺🇸 USA
Spok Holdings SPOK	$0.28 B	-99.87%	🇺🇸 USA
Shentel SHEN	$0.65 B	-99.71%	🇺🇸 USA
America Movil AMX	$62.34 B	-71.91%	🇲🇽 Mexico
U.S. Cellular USM	$6.62 B	-97.02%	🇺🇸 USA
Telephone and Data Systems TDS	$5.21 B	-97.65%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of T-Mobile US (TMUS)

Market cap: $221.94 Billion USD