T-Mobile US (TMUS) - Market capitalization

Market cap: NZ$371.45 Billion

As of February 2026 T-Mobile US has a market cap of NZ$371.45 Billion. This makes T-Mobile US the world's 74th 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	NZ$371.45 B	-4.9%
2025	NZ$390.58 B	-14.89%
2024	NZ$458.91 B	56.52%
2023	NZ$293.19 B	6.87%
2022	NZ$274.34 B	29.35%
2021	NZ$212.08 B	-8.57%
2020	NZ$231.96 B	132.48%
2019	NZ$99.77 B	23.76%
2018	NZ$80.62 B	8.37%
2017	NZ$74.39 B	8.75%
2016	NZ$68.41 B	46.25%
2015	NZ$46.77 B	68.49%
2014	NZ$27.76 B	-15.42%
2013	NZ$32.82 B	645.34%
2012	NZ$4.40 B	9.31%
2011	NZ$4.02 B	-30.69%
2010	NZ$5.81 B	56.89%
2009	NZ$3.70 B	-58.65%
2008	NZ$8.96 B	1.38%
2007	NZ$8.83 B

End of Day market cap according to different sources

On Feb 10th, 2026 the market cap of T-Mobile US was reported to be:

NZ$369.17 Billion

by Nasdaq

NZ$371.45 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
AT&T T	NZ$321.60 B	-13.42%	🇺🇸 USA
Verizon VZ	NZ$330.74 B	-10.96%	🇺🇸 USA
Spok Holdings SPOK	NZ$0.45 B	-99.88%	🇺🇸 USA
Shentel SHEN	NZ$1.14 B	-99.69%	🇺🇸 USA
America Movil AMX	NZ$112.91 B	-69.60%	🇲🇽 Mexico
U.S. Cellular USM	NZ$10.96 B	-97.05%	🇺🇸 USA
Telephone and Data Systems TDS	NZ$8.75 B	-97.64%	🇺🇸 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: NZ$371.45 Billion