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Disclosery

GROUP ONE TRADING LLC: FAST position timeline

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

GROUP ONE TRADING LLC held 0 FAST shares at 2026-03-31 per its 13F-HR filed 2026-05-13.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -23,784 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 23,784 shares
    Change vs previous 13F +12,377 shares

    0.03% of the 13F portfolio, value $954,452.

    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).

  3. period ended2025-09-30
    13F 11,407 shares
    Change vs previous 13F -28,358 shares

    0.02% of the 13F portfolio, value $559,399.

    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).

  4. period ended2025-06-30
    13F 39,765 shares
    Change vs previous 13F +34,528 shares

    0.05% of the 13F portfolio, value $1,670,130.

    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).

  5. period ended2025-03-31
    13F 5,237 shares
    Change vs previous 13F -1,458 shares

    0.02% of the 13F portfolio, value $406,129.

    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).

  6. period ended2024-12-31
    13F/A 6,695 shares
    Change vs previous 13F +3,106 shares

    0.02% of the 13F portfolio, value $481,437.

    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).

  7. period ended2024-09-30
    13F 3,589 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $256,326.

    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).