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GROUP ONE TRADING LLC

Position in PSIX — Power Solutions International, Inc.

CIK 932540 CHICAGO, IL

Position in PSIX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$59,540
-$144,468 QoQ
Shares Held
1,531
-54.3% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#113
of 156 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PSIX Over Time

Shares Held

Position Value (USD)

Position in Specialty Industrial Machinery

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $12,117,630 across 20 Specialty Industrial Machinery names. PSIX ranks #11 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PSIX

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4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $59,540 1,531
2026-03-31 $204,008 3,351
2025-12-31 $304,327 5,326
2025-09-30 $489,233 4,981