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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

25 quarters · across all stocks

Holdings in MCY

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Shares Held

Position Value (USD)

6 quarters on record
Report Date Value (USD) Shares
2025-12-31 $3,400,833 36,156
2025-09-30 $463,237 5,464
2025-06-30 $2,181,075 32,389
2021-06-30 $32,475 500
2021-03-31 $66,891 1,100
2020-12-31 $26,105 500