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Disclosery

GROUP ONE TRADING LLC: BTBT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GROUP ONE TRADING LLC on BTBT, newest first. How the timeline and the estimate are built.

GROUP ONE TRADING LLC held 357,587 BTBT shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 357,587 shares
    Change vs previous 13F -62,841 shares

    0.02% of the 13F portfolio, value $643,657.

    13F-HR 0000932540-26-000011 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 420,428 shares
    Change vs previous 13F -691,378 shares

    0.02% of the 13F portfolio, value $550,761.

    13F-HR 0000932540-26-000005 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 1,111,806 shares
    Change vs previous 13F -251,225 shares

    0.06% of the 13F portfolio, value $2,101,313.

    13F-HR 0000932540-26-000002 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 1,363,031 shares
    Change vs previous 13F +337,701 shares

    0.12% of the 13F portfolio, value $4,089,093.

    13F-HR 0000932540-25-000040 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 1,025,330 shares
    Change vs previous 13F -14,580 shares

    0.07% of the 13F portfolio, value $2,245,473.

    13F-HR 0000932540-25-000034 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 1,039,910 shares
    Change vs previous 13F -898,430 shares

    0.09% of the 13F portfolio, value $2,100,618.

    13F-HR 0000932540-25-000027 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F/A 1,938,340 shares
    Change vs previous 13F +285,473 shares

    0.19% of the 13F portfolio, value $5,679,336.

    13F-HR/A 0000932540-25-000028 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 1,652,867 shares
    Change vs previous 13F not available

    0.23% of the 13F portfolio, value $5,801,563.

    13F-HR 0000932540-24-000015 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).