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Disclosery

GROUP ONE TRADING LLC: MTLS position timeline

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

GROUP ONE TRADING LLC held 384 MTLS 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 384 shares
    Change vs previous 13F -4,246 shares

    <0.01% of the 13F portfolio, value $2,853.

    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 4,630 shares
    Change vs previous 13F -22,272 shares

    <0.01% of the 13F portfolio, value $22,872.

    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 26,902 shares
    Change vs previous 13F -16,179 shares

    <0.01% of the 13F portfolio, value $149,306.

    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 43,081 shares
    Change vs previous 13F +14,088 shares

    0.01% of the 13F portfolio, value $239,961.

    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 28,993 shares
    Change vs previous 13F -24,792 shares

    0.01% of the 13F portfolio, value $163,810.

    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 53,785 shares
    Change vs previous 13F +41,999 shares

    0.01% of the 13F portfolio, value $264,622.

    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 11,786 shares
    Change vs previous 13F -5,670 shares

    <0.01% of the 13F portfolio, value $82,973.

    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 17,456 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $95,659.

    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).