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GROUP ONE TRADING LLC

Position in SST — System1, Inc.

CIK 932540 CHICAGO, IL

Position in SST

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$673
-$1,925 QoQ
Shares Held
223
-66.4% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2025
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SST Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $4,704,931 across 12 Specialty Business Services names. SST ranks #12 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SST

Export CSV
4 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $673 223
2025-12-31 $2,598 663
2025-09-30 $5,075 721
2025-06-30 $11,469 2,074