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Disclosery

GROUP ONE TRADING LLC: S position timeline

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

GROUP ONE TRADING LLC held 220,016 S 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 220,016 shares
    Change vs previous 13F -179,718 shares

    0.11% of the 13F portfolio, value $3,733,672.

    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 399,734 shares
    Change vs previous 13F -527,110 shares

    0.17% of the 13F portfolio, value $5,148,574.

    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 926,844 shares
    Change vs previous 13F +637,283 shares

    0.41% of the 13F portfolio, value $13,902,660.

    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 289,561 shares
    Change vs previous 13F +188,447 shares

    0.15% of the 13F portfolio, value $5,099,169.

    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 101,114 shares
    Change vs previous 13F -127,689 shares

    0.06% of the 13F portfolio, value $1,848,364.

    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 228,803 shares
    Change vs previous 13F +26,571 shares

    0.17% of the 13F portfolio, value $4,159,639.

    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 202,232 shares
    Change vs previous 13F +10,998 shares

    0.15% of the 13F portfolio, value $4,489,550.

    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 191,234 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $4,574,317.

    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).