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Disclosery

GROUP ONE TRADING LLC: MOS position timeline

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

GROUP ONE TRADING LLC held 607,889 MOS 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 607,889 shares
    Change vs previous 13F +244,837 shares

    0.37% of the 13F portfolio, value $12,881,168.

    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 363,052 shares
    Change vs previous 13F +207,717 shares

    0.31% of the 13F portfolio, value $9,257,826.

    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 155,335 shares
    Change vs previous 13F +4,598 shares

    0.11% of the 13F portfolio, value $3,742,020.

    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 150,737 shares
    Change vs previous 13F +112,551 shares

    0.16% of the 13F portfolio, value $5,227,559.

    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 38,186 shares
    Change vs previous 13F +8,352 shares

    0.05% of the 13F portfolio, value $1,393,025.

    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 29,834 shares
    Change vs previous 13F -54,993 shares

    0.03% of the 13F portfolio, value $805,816.

    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 84,827 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $2,085,048.

    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).