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Disclosery

GROUP ONE TRADING LLC: NMM position timeline

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

GROUP ONE TRADING LLC held 79,762 NMM 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 79,762 shares
    Change vs previous 13F +8,281 shares

    0.16% of the 13F portfolio, value $5,588,923.

    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 71,481 shares
    Change vs previous 13F -5,318 shares

    0.16% of the 13F portfolio, value $4,823,538.

    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 76,799 shares
    Change vs previous 13F +1,003 shares

    0.12% of the 13F portfolio, value $4,026,572.

    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 75,796 shares
    Change vs previous 13F -3,727 shares

    0.1% of the 13F portfolio, value $3,414,610.

    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 79,523 shares
    Change vs previous 13F -43,371 shares

    0.1% of the 13F portfolio, value $2,996,427.

    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 122,894 shares
    Change vs previous 13F -295,864 shares

    0.2% of the 13F portfolio, value $4,819,903.

    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 418,758 shares
    Change vs previous 13F +29,516 shares

    0.62% of the 13F portfolio, value $18,128,034.

    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 389,242 shares
    Change vs previous 13F not available

    0.96% of the 13F portfolio, value $24,378,226.

    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).