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System1, Inc.

SSTPW
Exchange
OTC
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; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.

Other share classesSST

13F holders, Q4 2021

Institutional positions in System1, Inc. as of Dec 31, 2021. 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
35
−1 vs. Q3 2021
Shares held
8.65M
+1.03M (+13.6%) vs. Q3 2021
Total value
$12.5M
−$1.49M (−10.7%) vs. Q3 2021
New holders
6
2 more added
Sold out
7
3 more reduced

Compare with Q3 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting SSTPW 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.

Institutional holdersQ4 2021: 35 institutions
Q1 2021: 38 institutionsQ2 2021: 40 institutionsQ3 2021: 36 institutionsQ4 2021: 35 institutionsQ1 2022: 24 institutionsQ2 2022: 22 institutionsQ3 2022: 23 institutionsQ4 2022: 22 institutionsQ1 2023: 20 institutionsQ2 2023: 16 institutionsQ3 2023: 14 institutionsQ4 2023: 20 institutionsQ1 2024: 17 institutionsQ2 2024: 16 institutionsQ3 2024: 16 institutionsQ4 2024: 18 institutionsQ1 2025: 17 institutionsQ2 2025: 2 institutionsQ3 2025: 0 institutionsQ4 2025: 0 institutionsQ1 2026: 0 institutionsQ2 2026: 0 institutions
Value heldQ4 2021: $12.5M
Q1 2021: $13.6MQ2 2021: $17.3MQ3 2021: $13.9MQ4 2021: $12.5MQ1 2022: $10.6MQ2 2022: $4.74MQ3 2022: $4.99MQ4 2022: $1.32MQ1 2023: $959.3KQ2 2023: $1.66MQ3 2023: $188.5KQ4 2023: $506.8KQ1 2024: $441.0KQ2 2024: $178.4KQ3 2024: $156.1KQ4 2024: $45.1KQ1 2025: $42.5KQ2 2025: $235Q3 2025: $0Q4 2025: $0Q1 2026: $0Q2 2026: $0
Institutions holding SSTPW and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 20260$0
Q4 20250$0
Q3 20250$0
Q2 20252$235
Q1 202517$42.5K
Q4 202418$45.1K
Q3 202416$156.1K
Q2 202416$178.4K
Q1 202417$441.0K
Q4 202320$506.8K
Q3 202314$188.5K
Q2 202316$1.66M
Q1 202320$959.3K
Q4 202222$1.32M
Q3 202223$4.99M
Q2 202222$4.74M
Q1 202224$10.6M
Q4 202135$12.5M
Q3 202136$13.9M
Q2 202140$17.3M
Q1 202138$13.6M

Institutions, Q4 2021

Shares, value and share of portfolio for each institution holding System1, Inc.; share changes are against Q3 2021.

Institutions holding SSTPW in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Highbridge Capital Management LLC–$2.40M0.06%––
LH Capital Markets, LLC1,700,000$1.96M0.89%+1,700,000New
Ratan Capital Management LP829,356$954.0K0.15%−281,810−25.4%Reduced
P Schoenfeld Asset Management LP647,261$744.0K0.04%+100,000+18.3%Added
Linden Advisors LP616,331$730.0K0.00%00.0%Unchanged
Sculptor Capital LP443,874$519.0K0.00%00.0%Unchanged
Magnetar Financial LLC411,670$473.0K0.00%00.0%Unchanged
Ionic Capital Management LLC366,223$421.0K0.07%−11,822−3.1%Reduced
Taconic Capital Advisors LP345,000$397.0K0.01%00.0%Unchanged
Blackstone Group Inc.333,333$383.0K0.00%00.0%Unchanged
Moore Capital Management, LP333,333$383.0K0.01%00.0%Unchanged
Balyasny Asset Management LLC294,601$339.0K0.00%+2,935+1.0%Added
Fort Baker Capital Management LP259,953$298.0K0.05%00.0%Unchanged
Difesa Capital Management, LP256,700$295.0K0.21%+256,700New
Westchester Capital Management, LLC219,925$253.0K0.01%00.0%Unchanged
Fortress Investment Group LLC219,125$251.0K0.01%00.0%Unchanged
Davidson Kempner Capital Management LP215,992$248.0K0.00%00.0%Unchanged
D. E. Shaw & Co., Inc.199,866$230.0K0.00%00.0%Unchanged
Kepos Capital LP200,000$230.0K0.02%00.0%Unchanged
Aristeia Capital LLC140,056$164.0K0.00%00.0%Unchanged
JPMorgan Chase & Co–$149.0K0.00%––
Boussard & Gavaudan Investment Management LLP116,666$149.0K0.01%00.0%Unchanged
HBK Investments L P70,000$81.0K0.00%+70,000New
Mint Tower Capital Management B.V.66,666$77.0K0.01%+66,666New
Tenor Capital Management Co., L.P.60,750$70.0K0.00%00.0%Unchanged
Maven Securities LTD50,000$58.0K0.01%00.0%Unchanged
Integrity Capital Management (HK) Ltd50,000$58.0K0.19%+50,000New
Mission Wealth Management, LP34,000$39.0K0.00%00.0%Unchanged
DuPont Capital Management Corp33,333$38.0K0.00%00.0%Unchanged
Omers Administration Corp20,899$24.0K0.00%00.0%Unchanged
Walleye Capital LLC19,720$23.0K0.00%00.0%Unchanged
Walleye Trading LLC12,480$14.0K0.00%00.0%Unchanged
K.J. Harrison & Partners Inc10,000$12.0K0.00%+10,000New
CNH Partners LLC33,333––00.0%Unchanged
Radcliffe Capital Management, L.P.42,789––−82,444−65.8%Reduced
Advisory Research Inc0$00.00%−270,000−100.0%Sold out
Antara Capital LP0$00.00%−200,000−100.0%Sold out
Sage Rock Capital Management LP0$00.00%−197,430−100.0%Sold out
Glazer Capital, LLC0$00.00%−73,070−100.0%Sold out
PEAK6 Investments LLC0$00.00%−50,000−100.0%Sold out
CSS LLC0$00.00%−43,689−100.0%Sold out
Jefferies Group LLC0$00.00%−12,711−100.0%Sold out