T-Mobile US (TMUS) - Market capitalization

Market cap: €189.74 Billion

As of December 2025 T-Mobile US has a market cap of €189.74 Billion. This makes T-Mobile US the world's 73th 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 2025

End of year Market Cap

Year	Marketcap	Change
2025	€189.74 B	-23.71%
2024	€248.71 B	48.28%
2023	€167.72 B	3.29%
2022	€162.38 B	26.94%
2021	€127.91 B	-6%
2020	€136.07 B	126.85%
2019	€59.98 B	26.89%
2018	€47.27 B	7.35%
2017	€44.03 B	-2.26%
2016	€45.05 B	53.87%
2015	€29.28 B	63.71%
2014	€17.88 B	-8.43%
2013	€19.53 B	613.15%
2012	€2.73 B	13.12%
2011	€2.42 B	-28.19%
2010	€3.37 B	79.49%
2009	€1.87 B	-49.5%
2008	€3.71 B	-19.79%
2007	€4.63 B

End of Day market cap according to different sources

On Dec 16th, 2025 the market cap of T-Mobile US was reported to be:

€188.57 Billion

by Nasdaq

€189.74 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Verizon VZ	€146.30 B	-22.89%	🇺🇸 USA
AT&T T	€146.55 B	-22.76%	🇺🇸 USA
Telephone and Data Systems TDS	€3.72 B	-98.04%	🇺🇸 USA
Spok Holdings SPOK	€0.23 B	-99.88%	🇺🇸 USA
U.S. Cellular USM	€5.63 B	-97.03%	🇺🇸 USA
America Movil AMX	€53.56 B	-71.77%	🇲🇽 Mexico
Shentel SHEN	€0.55 B	-99.71%	🇺🇸 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: €189.74 Billion