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Disclosery

GROUP ONE TRADING LLC: XIFR position timeline

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

GROUP ONE TRADING LLC held 179,399 XIFR 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 179,399 shares
    Change vs previous 13F -206,198 shares

    0.06% of the 13F portfolio, value $2,118,702.

    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 385,597 shares
    Change vs previous 13F -126,700 shares

    0.14% of the 13F portfolio, value $4,095,040.

    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 512,297 shares
    Change vs previous 13F +107,554 shares

    0.15% of the 13F portfolio, value $5,122,970.

    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 404,743 shares
    Change vs previous 13F -190,201 shares

    0.12% of the 13F portfolio, value $4,116,236.

    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 594,944 shares
    Change vs previous 13F +99,941 shares

    0.16% of the 13F portfolio, value $4,878,541.

    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 495,003 shares
    Change vs previous 13F +220,852 shares

    0.2% of the 13F portfolio, value $4,702,528.

    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 274,151 shares
    Change vs previous 13F +183,047 shares

    0.17% of the 13F portfolio, value $4,879,888.

    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 91,104 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $2,516,292.

    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).