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Disclosery

GROUP ONE TRADING LLC: NAT position timeline

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

GROUP ONE TRADING LLC held 158,985 NAT 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 158,985 shares
    Change vs previous 13F -35,567 shares

    0.03% of the 13F portfolio, value $880,777.

    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 194,552 shares
    Change vs previous 13F +123,903 shares

    0.04% of the 13F portfolio, value $1,140,075.

    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 70,649 shares
    Change vs previous 13F -275,542 shares

    0.01% of the 13F portfolio, value $243,033.

    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 346,191 shares
    Change vs previous 13F +141,366 shares

    0.03% of the 13F portfolio, value $1,087,040.

    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 204,825 shares
    Change vs previous 13F -94,886 shares

    0.02% of the 13F portfolio, value $538,690.

    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 299,711 shares
    Change vs previous 13F +247,284 shares

    0.03% of the 13F portfolio, value $737,289.

    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 52,427 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $131,068.

    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).