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
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −3 vs. previous quarter
- 21
- 13F valueReported value at the end of Q2 2026
- $1.38M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding SST, Q2 2026
No superinvestor reported holding SST at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by System1, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Apr 17, 2026 (view filing) | Apr 15 | 2 days | Kidambi TridiveshChief Financial Officer | PPurchaseClass A Common Stock | +26.9K | $3.00 | +$80.7K | +22.4%146.8K after | |
| Aug 26, 2025 (view filing) | Aug 22 | 4 days | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +11.0K | $7.32 | +$80.6K | +1.2%919.6K after | |
| Aug 21, 2025 (view filing) | Aug 19-21 | 2 days | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +31.7K | $6.52 | +$207.0K | +3.6%908.5K after | 3 lots |
| Jun 17, 2025 (view filing) | Jun 13 | 4 days | Civantos JohnDirector | PPurchaseClass A Common Stock | +6.16K | $4.01 | +$24.7K | +12.5%55.6K after | |
| Jun 13, 2025 (view filing) | Jun 12 | 1 day | Civantos JohnDirector | PPurchaseClass A Common Stock | +18.8K | $3.89 | +$73.3K | +61.5%49.5K after | |
| Jun 11, 2025 (view filing) | Jun 9 | 2 days | Kidambi TridiveshChief Financial Officer | SSaleClass A Common Stock | −15.0K | $0.00 | $0 | –0 after | Derivative |
| Sep 19, 2024 (view filing) | Sep 16 | 3 daysLate | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +8.41K | $1.24 | +$10.4K | +0.1%8.77M after | |
| Sep 12, 2024 (view filing) | Sep 10-12 | 2 days | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +11.8K | $1.21 | +$14.3K | +0.1%8.76M after | 3 lots |
| Sep 9, 2024 (view filing) | Sep 5-9 | 4 days | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +18.1K | $1.22 | +$22.0K | +0.2%8.75M after | 3 lots |
| Sep 4, 2024 (view filing) | Aug 30-Sep 4 | 5 days | CEE Holdings Trust10% Owner | PPurchaseClass A Common Stock | +25.4K | $1.24 | +$31.4K | +0.3%8.73M after | 3 lots |
Top 10 13F holders, Q2 2026
The largest institutional positions in System1, Inc. at the end of Q2 2026; 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 |