SIRI Institutional Ownership
Top institutional (13F) holders of SIRI and activist (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
38
Institutional value
$6.58B
Top holder
BERKSHIRE HATHAWAY INC
Top holders
| Holder | Filed | Value |
|---|---|---|
| BERKSHIRE HATHAWAY INCACTIVISTinvestment advisor | Aug 14, 2026 | $3.69B |
| BlackRock, Inc.holding company | Aug 7, 2026 | $519.97M |
| Dimensional Fund Advisors LPhedge fund | Aug 11, 2026 | $310.53M |
| Vanguard Portfolio Managementhedge fund | Aug 13, 2026 | $268.30M |
| Vanguard Capital Managementhedge fund | Aug 13, 2026 | $247.75M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPinvestment advisor | Aug 14, 2026 | $204.08M |
| STATE STREET CORPinvestment advisor | Aug 7, 2026 | $177.02M |
| CITADEL ADVISORS LLCinvestment advisor | Aug 14, 2026 | $156.90M |
| GOLDMAN SACHS GROUP INCinvestment advisor | Aug 14, 2026 | $142.00M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | Aug 12, 2026 | $115.28M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | Aug 14, 2026 | $98.37M |
| Bank of New York Mellon Corpholding company | Aug 6, 2026 | $88.98M |
| Canada Pension Plan Investment BoardACTIVISTother | Aug 14, 2026 | $69.86M |
| Norges Bankother | Aug 12, 2026 | $61.80M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | Aug 14, 2026 | $52.01M |
| JANE STREET GROUP, LLCholding company | Aug 14, 2026 | $50.56M |
| MORGAN STANLEYinvestment advisor | Aug 13, 2026 | $48.49M |
| NORTHERN TRUST CORPinvestment advisor | Aug 13, 2026 | $46.81M |
| UBS Group AGinvestment advisor | Aug 13, 2026 | $27.10M |
| TWO SIGMA INVESTMENTS, LPinvestment advisor | Aug 14, 2026 | $24.90M |
| JPMORGAN CHASE & COinvestment advisor | Aug 12, 2026 | $21.85M |
| PRICE T ROWE ASSOCIATES INC /MD/investment advisor | Aug 14, 2026 | $21.57M |
| Ameriprise Financial, Inc.holding company | Aug 14, 2026 | $21.55M |
| Invesco Ltd.investment advisor | Aug 14, 2026 | $21.38M |
| ROYAL BANK OF CANADAinvestment advisor | Aug 14, 2026 | $19.27M |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.