GROUP ONE TRADING LLC

CIK
932540
City
CHICAGO
State / Country
IL

Top Portfolio Positions

1,823 positions · $2,513,864,968 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio Open

Portfolio Trend

31 quarters · across all stocks

Holdings in QSI

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Shares Held

Position Value (USD)

7 quarters on record
Report Date Value (USD) Shares
2026-03-31 $219,801 283,981
2025-12-31 $270,381 245,801
2025-09-30 $532,661 377,774
2025-06-30 $263,878 134,632
2023-06-30 $5,645 3,154
2023-03-31 $2,735 1,554
2021-06-30 $337,150 27,500