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Disclosery

GROUP ONE TRADING LLC: TOST position timeline

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

GROUP ONE TRADING LLC held 1,846 TOST 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 1,846 shares
    Change vs previous 13F -35,183 shares

    <0.01% of the 13F portfolio, value $51,356.

    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 37,029 shares
    Change vs previous 13F +2,770 shares

    0.03% of the 13F portfolio, value $981,639.

    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 34,259 shares
    Change vs previous 13F +29,110 shares

    0.04% of the 13F portfolio, value $1,216,537.

    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 5,149 shares
    Change vs previous 13F -30,464 shares

    0.01% of the 13F portfolio, value $187,990.

    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 35,613 shares
    Change vs previous 13F -9,654 shares

    0.05% of the 13F portfolio, value $1,577,300.

    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 45,267 shares
    Change vs previous 13F -54,119 shares

    0.06% of the 13F portfolio, value $1,501,506.

    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 99,386 shares
    Change vs previous 13F -25,455 shares

    0.12% of the 13F portfolio, value $3,622,620.

    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 124,841 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $3,534,249.

    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).