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Disclosery

GROUP ONE TRADING LLC: ASPI position timeline

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

GROUP ONE TRADING LLC held 458,383 ASPI 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 458,383 shares
    Change vs previous 13F -137,242 shares

    0.08% of the 13F portfolio, value $2,851,142.

    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 595,625 shares
    Change vs previous 13F +151,280 shares

    0.09% of the 13F portfolio, value $2,632,662.

    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 444,345 shares
    Change vs previous 13F -183,898 shares

    0.07% of the 13F portfolio, value $2,377,246.

    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 628,243 shares
    Change vs previous 13F -78,545 shares

    0.18% of the 13F portfolio, value $6,043,698.

    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 706,788 shares
    Change vs previous 13F +437,160 shares

    0.17% of the 13F portfolio, value $5,201,960.

    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 269,628 shares
    Change vs previous 13F +202,507 shares

    0.05% of the 13F portfolio, value $1,264,555.

    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 67,121 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $304,058.

    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).