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System1
SST

Fund managers haven’t disclosed any holdings of SST yet.

SST Hedge Fund Activity: Q1 2026 in Review

25 of the 8,127 institutional investors tracked by Wall St. Rank reported a position in System1 (SST) for Q1 2026, worth a combined $2.5M — down 22% from $3.2M a quarter earlier.

Buyers outnumbered sellers: 6 funds opened new SST positions and 4 closed out — a net gain of 2 holders — while 4 added to existing stakes and 6 trimmed.

The largest buyer was Nine Masts Capital, opening a new position worth an estimated $62.4K. The largest seller was Citadel Advisors, exiting entirely with an estimated $50K sold.

  • 25 institutional investors held System1 (SST) as of Q1 2026, up from 24 in Q4 2025.
  • Funds reported $2.5M of System1 stock for Q1 2026, down 22% quarter-over-quarter.
  • 6 funds opened new System1 positions in Q1 2026 and 4 closed out, a net change of +2 holders.
  • The largest System1 buyer in Q1 2026 was Nine Masts Capital, an estimated $62.4K added.
  • The largest System1 seller in Q1 2026 was Citadel Advisors, an estimated $50K sold.

Based on aggregated 13F filings for Q1 2026.