661 institutions reported holding $9.04B of SIRIUSXM HOLDINGS INC (SIRI) in SEC 13F filings for 2026-06-30. Largest institutional holders: Berkshire Hathaway Inc ($3.69B), VANGUARD GROUP INC ($559.8M), BlackRock, Inc. ($520.0M), DIMENSIONAL FUND ADVISORS LP ($310.5M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($204.1M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30