When did TMUS join the S&P 500?

T-Mobile US joined the S&P 500 index on 2019-07-15.

What sector is TMUS in?

TMUS is in the Communication Services sector, Wireless Telecommunication Services industry.

TMUS — T-Mobile US

Name: TMUS Institutional Holdings (13F) — 2026Q1
Creator: SEC EDGAR
License: https://www.sec.gov/data

Wireless Telecommunication Services · Communication Services

T-Mobile US, Inc. provides wireless communications services under the T-Mobile and MetroPCS brands. It offers postpaid and prepaid wireless voice, messaging, and data services, as well as wholesale wireless services.

Industry Peers

ECHO

Sector Peers

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Key Facts

Status	Active
Sector	Communication Services
Industry	Wireless Telecommunication Services
Joined	2019-07-15
Tenure	6 yrs

S&P 500 Timeline

2019-07-15Joined S&P 500

Institutional Holdings (13F)

1,723 institutions hold TMUS, totaling 581.0M shares ($112.3B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	59.5M	$12.5B
2	MORGAN STANLEY	40.8M	$8.9B
3	BlackRock, Inc.	39.1M	$8.2B
4	BARCLAYS PLC	36.9M	$7.2B
5	STATE STREET CORP	23.7M	$5.0B
6	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	32.2M	$4.2B
7	WELLINGTON MANAGEMENT GROUP LLP	17.2M	$3.6B
8	FMR LLC	12.5M	$2.6B
9	GEODE CAPITAL MANAGEMENT, LLC	12.4M	$2.6B
10	GOLDMAN SACHS GROUP INC	11.6M	$2.4B

View all holders →

Data source: Wikipedia · CC BY-SA 4.0 · SEC EDGAR 13F · Updated 2026-07-10