364 institutions reported holding $7.97B of T-Mobile US Inc (TWST) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($623.9M), BlackRock, Inc. ($600.2M), Artisan Partners Limited Partnership ($494.0M), FMR LLC ($483.8M), ARK Investment Management LLC ($468.1M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30