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GROUP ONE TRADING LLC

CIK
932540
City
CHICAGO
State / Country
IL

Top Portfolio Positions

1,828 positions · $2,528,937,297 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio Open

Portfolio Trend

25 quarters · across all stocks

Holdings in MREO

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Shares Held

Position Value (USD)

13 quarters on record
Report Date Value (USD) Shares
2026-03-31 $110,822 335,827
2025-12-31 $184,162 441,636
2025-09-30 $281,371 136,588
2025-06-30 $378,204 139,559
2025-03-31 $77,132 34,281
2023-03-31 $5,747 8,130
2022-12-31 $33,805 45,074
2022-09-30 $53,285 61,888
2022-06-30 $54,097 48,301
2022-03-31 $20,937 18,694
2021-12-31 $29,270 18,294
2021-09-30 $9,258 3,826
2021-06-30 $36,220 11,426