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Disclosery

GROUP ONE TRADING LLC: MIST position timeline

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

GROUP ONE TRADING LLC held 224 MIST 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 224 shares
    Change vs previous 13F -129,540 shares

    <0.01% of the 13F portfolio, value $300.

    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 129,764 shares
    Change vs previous 13F -65,335 shares

    0.01% of the 13F portfolio, value $154,419.

    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 195,099 shares
    Change vs previous 13F +188,077 shares

    0.01% of the 13F portfolio, value $394,100.

    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 7,022 shares
    Change vs previous 13F -24,594 shares

    <0.01% of the 13F portfolio, value $14,044.

    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 31,616 shares
    Change vs previous 13F -106,744 shares

    <0.01% of the 13F portfolio, value $61,335.

    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 138,360 shares
    Change vs previous 13F +85,723 shares

    <0.01% of the 13F portfolio, value $110,702.

    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 52,637 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $124,223.

    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).