System1, Inc.
SST- Exchange
- NYSE
- Industry
- Services-Computer Programming, Data Processing, Etc.
- SEC CIK
- 0001805833
No open-market purchases or sales by System1, Inc. insiders were filed in the last 90 days; 21 institutions reported holding it in 13F filings for Q2 2026, worth $1.38M in total; no superinvestor holds it.
Other share classesSSTPW
13F holders, Q2 2026
Institutional positions in System1, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 21
- −3 vs. Q1 2026
- Shares held
- 597.9K
- −228.9K (−27.7%) vs. Q1 2026
- Total value
- $1.38M
- −$1.12M (−44.7%) vs. Q1 2026
- New holders
- 7
- 3 more added
- Sold out
- 10
- 5 more reduced
1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SST on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 21 | $1.38M |
| Q1 2026 | 25 | $2.50M |
| Q4 2025 | 24 | $3.20M |
| Q3 2025 | 30 | $22.5M |
| Q2 2025 | 36 | $17.9M |
| Q1 2025 | 55 | $13.2M |
| Q4 2024 | 59 | $31.6M |
| Q3 2024 | 60 | $39.1M |
| Q2 2024 | 60 | $53.0M |
| Q1 2024 | 47 | $69.7M |
| Q4 2023 | 49 | $77.1M |
| Q3 2023 | 48 | $41.6M |
| Q2 2023 | 44 | $154.8M |
| Q1 2023 | 34 | $138.1M |
| Q4 2022 | 30 | $133.5M |
| Q3 2022 | 38 | $182.2M |
| Q2 2022 | 37 | $193.0M |
| Q1 2022 | 31 | $421.1M |
| Q4 2021 | 1 | $9.79M |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding System1, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bank of America Corp | 161,513 | $373.1K | 0.00% | −60.0% | Reduced |
| Vanguard Capital Management LLC | 127,576 | $294.7K | 0.00% | +90,444+243.6% | Added |
| Cerity Partners LLC | 116,844 | $269.9K | 0.00% | 00.0% | Unchanged |
| Crescent Grove Advisors, LLC | 75,545 | $174.5K | 0.01% | +75,545 | New |
| BlackRock, Inc. | 43,353 | $100.1K | 0.00% | +19,106+78.8% | Added |
| Morgan Stanley | 13,134 | $30.3K | 0.00% | +13,134 | New |
| Geode Capital Management, LLC | 12,519 | $28.9K | 0.00% | −11,320−47.5% | Reduced |
| Leonteq Securities AG | 12,500 | $28.9K | 0.00% | +12,500 | New |
| Price T Rowe Associates Inc | 11,731 | $28.0K | 0.00% | +11,731 | New |
| State Street Corp | 11,502 | $26.6K | 0.00% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 9,141 | $21.1K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,314 | $3.00K | 0.00% | +1,275+3,269.2% | Added |
| UBS Group AG | 618 | $1.43K | 0.00% | −706−53.3% | Reduced |
| Jones Financial Companies LLLP | 366 | $919 | 0.00% | +366 | New |
| BNP Paribas Arbitrage, SA | 86 | $199 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 60 | $139 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 42 | $102 | 0.00% | −5,848−99.3% | Reduced |
| Advisor Group Holdings, Inc. | 35 | $80 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 33 | $76 | 0.00% | −190−85.2% | Reduced |
| Barclays PLC | 9 | $21 | 0.00% | +9 | New |
| Signaturefd, LLC | 1 | $2 | 0.00% | +1 | New |
| Cannae Holdings, Inc. | 0 | $0 | 0.00% | −356,797−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −32,619−100.0% | Sold out |
| Nine Masts Capital Ltd | 0 | $0 | 0.00% | −18,548−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −18,320−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −7,332−100.0% | Sold out |
| Vanguard Global Advisers, LLC | 0 | $0 | 0.00% | −660−100.0% | Sold out |
| UMA Financial Services, Inc. | 0 | $0 | 0.00% | −301−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| Strategic Wealth Partners, Ltd. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| SHP Wealth Management | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |