| 10.5M |
| $310.5M |
| +66.8% |
| 3.123% |
| 0.06% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 9.1M | $268.3M | +4.3% | 2.698% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 8.4M | $247.7M | +1.0% | 2.491% | 0.01% |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 6.9M | $204.1M | -0.6% | 2.052% | 0.02% |
| 7 | Kontiki Capital Management (HK) Ltd. | 6.1M | $179.7M | +6.8% | 1.807% | 11.78% |
| 8 | STATE STREET CORP | 6.0M | $177.0M | +68.9% | 1.780% | 0.00% |
| 9 | CITADEL ADVISORS LLC | 5.3M | $156.9M | +7.9% | 1.578% | 0.01% |
| 10 | Boston Partners | 5.1M | $150.2M | — | 1.509% | 0.13% |
| 11 | GOLDMAN SACHS GROUP INC | 4.8M | $142.0M | +19.2% | 1.428% | 0.01% |
| 12 | Gates Capital Management, Inc. | 4.5M | $134.1M | +65.5% | 1.349% | 3.22% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 3.9M | $115.3M | +5.3% | 1.159% | 0.01% |
| 14 | AQR CAPITAL MANAGEMENT LLC | 3.4M | $98.4M | +13.6% | 1.009% | 0.03% |
| 15 | Bank of New York Mellon Corp | 3.0M | $89.0M | +38.3% | 0.895% | 0.01% |
| 16 | J. Goldman & Co LP | 3.0M | $88.2M | — | 0.887% | 2.28% |
| 17 | CHECK CAPITAL MANAGEMENT INC/CA | 2.9M | $86.5M | -0.5% | 0.870% | 0.77% |
| 18 | CANADA PENSION PLAN INVESTMENT BOARD | 2.4M | $69.9M | -38.8% | 0.703% | 0.04% |
| 19 | NORGES BANK | 2.1M | $61.8M | — | 0.621% | 0.01% |
| 20 | BARCLAYS PLC | 2.0M | $57.9M | +171.9% | 0.582% | 0.01% |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.8M | $52.0M | +1.2% | 0.523% | 0.01% |
| 22 | JANE STREET GROUP, LLC | 1.7M | $50.6M | -6.2% | 0.508% | 0.00% |
| 23 | Squarepoint Ops LLC | 1.6M | $48.7M | +3565.7% | 0.490% | 0.05% |
| 24 | MORGAN STANLEY | 1.6M | $48.5M | -23.9% | 0.488% | 0.00% |
| 25 | HBK INVESTMENTS L P | 1.6M | $47.9M | -14.0% | 0.482% | 0.23% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SIRI — a direct measure of their conviction.
| 75.66% |
| 2.52 pp |
| $5.60B |
| 3.7% |
| Q4 2024 | 526 | +10% | 78.18% | +0.75 pp | $5.81B | 0.7% |
| Q3 2024 | 477 | — | 77.43% | — | $5.86B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
101 institutions opened new positions in SIRI during Q2 2026, while 58 fully exited. 432 added to existing positions and 59 trimmed.
SIRI institutional ownership rose by 7.60 percentage points quarter-over-quarter, with a net change of +47 holders.
The top 10 institutions account for 69.7% of all reported 13F value in SIRI, and the top 25 account for 83.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Sirius XM Holdings Inc. (SIRI) Institutional Ownership