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Disclosery

GROUP ONE TRADING LLC: GSL position timeline

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

GROUP ONE TRADING LLC held 1,492 GSL 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 1,492 shares
    Change vs previous 13F -2,047 shares

    <0.01% of the 13F portfolio, value $56,099.

    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 3,539 shares
    Change vs previous 13F +3,301 shares

    <0.01% of the 13F portfolio, value $131,757.

    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 238 shares
    Change vs previous 13F -3,933 shares

    <0.01% of the 13F portfolio, value $8,340.

    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 4,171 shares
    Change vs previous 13F -3,753 shares

    <0.01% of the 13F portfolio, value $128,050.

    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 7,924 shares
    Change vs previous 13F -13,861 shares

    0.01% of the 13F portfolio, value $208,480.

    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 21,785 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $497,787.

    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).