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Disclosery

GROUP ONE TRADING LLC: IMPP position timeline

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

GROUP ONE TRADING LLC held 10,509 IMPP 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 10,509 shares
    Change vs previous 13F -180,489 shares

    <0.01% of the 13F portfolio, value $48,446.

    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 190,998 shares
    Change vs previous 13F -65,563 shares

    0.03% of the 13F portfolio, value $817,471.

    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 256,561 shares
    Change vs previous 13F -32,325 shares

    0.03% of the 13F portfolio, value $928,751.

    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 288,886 shares
    Change vs previous 13F +106,567 shares

    0.04% of the 13F portfolio, value $1,380,875.

    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 182,319 shares
    Change vs previous 13F -109,616 shares

    0.02% of the 13F portfolio, value $561,543.

    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 291,935 shares
    Change vs previous 13F -605,348 shares

    0.03% of the 13F portfolio, value $715,241.

    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 897,283 shares
    Change vs previous 13F +24,272 shares

    0.09% of the 13F portfolio, value $2,700,822.

    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 873,011 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $3,622,996.

    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).