Institutional Holders (2026 Q1)
562 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in SIRI. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | Bislett Management, LLC | 10.68% | 600,000 | $13.8M |
| 2 | Wittenberg Investment Management, INC. | 9.50% | 1,107,416 | $25.6M |
| 3 | Kontiki Capital Management (HK) Ltd. | 9.22% | 5,696,724 | $131.5M |
| 4 | swisspartners Advisors Ltd | 6.05% | 419,336 | $9.6M |
| 5 | Towerview LLC | 4.99% | 335,300 | $7.7M |
| 6 | Hi-Line Capital Management, LLC | 4.84% | 667,677 | $15.4M |
| 7 | Chou Associates Management Inc. | 4.50% | 409,589 | $9.5M |
| 8 | Hall Kathryn A. | 3.29% | 262,033 | $6.1M |
| 9 | Capital Management Corp /Va | 2.09% | 530,536 | $12.2M |
| 10 | Weitz Investment Management, INC. | 2.08% | 1,293,000 | $29.8M |
| 11 | Aldebaran Capital, LLC | 2.04% | 115,403 | $2.7M |
| 12 | Check Capital Management Inc/Ca | 1.98% | 2,942,595 | $67.9M |
| 13 | Seizert Capital Partners, LLC | 1.96% | 1,840,822 | $42.5M |
| 14 | Weaver C. Barksdale & Associates, Inc. | 1.94% | 87,828 | $2.0M |
| 15 | Gates Capital Management, Inc. | 1.73% | 2,742,359 | $63.3M |
| 16 | Helium Advisors LLC | 1.47% | 66,721 | $1.5M |
| 17 | Woodson Capital Management, LP | 1.45% | 400,000 | $9.2M |
| 18 | Camelot Portfolios, LLC | 1.17% | 68,633 | $1.6M |
| 19 | Berkshire Hathaway Inc | 1.09% | 124,807,117 | $2.88B |
| 20 | Private Management Group Inc | 0.90% | 1,352,602 | $31.2M |
| 21 | Mork Capital Management, LLC | 0.89% | 54,400 | $1.3M |
| 22 | R.H. Dinel Investment Counsel, Inc. | 0.83% | 44,593 | $1.0M |
| 23 | Inlight Wealth Management, LLC | 0.71% | 83,091 | $1.9M |
| 24 | Wakefield Asset Management LLLP | 0.65% | 106,447 | $2.5M |
| 25 | PDT Partners, LLC | 0.65% | 475,186 | $11.0M |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|