29 institutions reported holding $2.5M of SYSTEM1 INC (SST) in SEC 13F filings for 2026-03-31. Largest institutional holders: Cannae Holdings, Inc. ($1.1M), BANK OF AMERICA CORP /DE/ ($487,787), Cerity Partners LLC ($352,869), VANGUARD CAPITAL MANAGEMENT LLC ($112,139), MILLENNIUM MANAGEMENT LLC ($98,509). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Cannae Holdings, Inc. | $1.1M | 356,797 | Hold |
| 2 | BANK OF AMERICA CORP /DE/ | $487,787 | 161,519 | Trimmed |
| 3 | Cerity Partners LLC | $352,869 | 116,844 | Hold |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $112,139 | 37,132 | New |
| 5 | MILLENNIUM MANAGEMENT LLC | $98,509 | 32,619 | Trimmed |
| 6 | BlackRock, Inc. | $73,226 | 24,247 | Hold |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $72,013 | 23,839 | Added |
| 8 | NINE MASTS CAPITAL Ltd | $56,015 | 18,548 | New |
| 9 | RENAISSANCE TECHNOLOGIES LLC | $55,326 | 18,320 | Trimmed |
| 10 | STATE STREET CORP | $34,736 | 11,502 | Hold |
| 11 | VANGUARD FIDUCIARY TRUST CO | $27,606 | 9,141 | New |
| 12 | Tower Research Capital LLC (TRC) | $22,143 | 7,332 | Added |
| 13 | JPMORGAN CHASE & CO | $18,495 | 5,890 | Added |
| 14 | UBS Group AG | $3,999 | 1,324 | Added |
| 15 | Vanguard Global Advisers, LLC | $1,993 | 660 | New |
| 16 | Physician Wealth Advisors, Inc. | $910 | 301 | New |
| 17 | Farther Finance Advisors, LLC | $783 | 150 | Hold |
| 18 | GROUP ONE TRADING LLC | $673 | 223 | Trimmed |
| 19 | CWM, LLC | $344 | 114 | Trimmed |
| 20 | SHP Wealth Management | $302 | 100 | New |
| 21 | Strategic Wealth Partners, Ltd. | $302 | 100 | Hold |
| 22 | BNP PARIBAS FINANCIAL MARKETS | $260 | 86 | Hold |
| 23 | SBI Securities Co., Ltd. | $181 | 60 | Hold |
| 24 | OSAIC HOLDINGS, INC. | $105 | 35 | Hold |
| 25 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31