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Disclosery

GROUP ONE TRADING LLC: PK position timeline

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

GROUP ONE TRADING LLC held 14,002 PK 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 14,002 shares
    Change vs previous 13F +10,145 shares

    0.01% of the 13F portfolio, value $199,528.

    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 3,857 shares
    Change vs previous 13F -2,676 shares

    <0.01% of the 13F portfolio, value $40,614.

    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 6,533 shares
    Change vs previous 13F -64,906 shares

    <0.01% of the 13F portfolio, value $68,335.

    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 71,439 shares
    Change vs previous 13F +42,696 shares

    0.02% of the 13F portfolio, value $791,544.

    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 28,743 shares
    Change vs previous 13F +9,788 shares

    0.01% of the 13F portfolio, value $294,041.

    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 18,955 shares
    Change vs previous 13F -86,787 shares

    0.01% of the 13F portfolio, value $202,439.

    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 105,742 shares
    Change vs previous 13F +85,681 shares

    0.05% of the 13F portfolio, value $1,487,790.

    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 20,061 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $282,860.

    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).