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Disclosery

GROUP ONE TRADING LLC: CMBT position timeline

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

GROUP ONE TRADING LLC held 120,799 CMBT 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 120,799 shares
    Change vs previous 13F +9,865 shares

    0.05% of the 13F portfolio, value $1,689,978.

    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 110,934 shares
    Change vs previous 13F -64,483 shares

    0.05% of the 13F portfolio, value $1,403,315.

    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 175,417 shares
    Change vs previous 13F +7,334 shares

    0.05% of the 13F portfolio, value $1,692,774.

    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 168,083 shares
    Change vs previous 13F +129,490 shares

    0.05% of the 13F portfolio, value $1,578,299.

    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 38,593 shares
    Change vs previous 13F +14,564 shares

    0.01% of the 13F portfolio, value $348,109.

    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 24,029 shares
    Change vs previous 13F +11,009 shares

    0.01% of the 13F portfolio, value $218,183.

    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 13,020 shares
    Change vs previous 13F +10,646 shares

    <0.01% of the 13F portfolio, value $129,289.

    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 2,374 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $39,456.

    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).