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Disclosery

GROUP ONE TRADING LLC: PII position timeline

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

GROUP ONE TRADING LLC held 47,209 PII 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 47,209 shares
    Change vs previous 13F -8,453 shares

    0.09% of the 13F portfolio, value $3,230,984.

    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 55,662 shares
    Change vs previous 13F -20,449 shares

    0.1% of the 13F portfolio, value $3,033,579.

    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 76,111 shares
    Change vs previous 13F -123,003 shares

    0.14% of the 13F portfolio, value $4,814,021.

    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 199,114 shares
    Change vs previous 13F +67,362 shares

    0.35% of the 13F portfolio, value $11,574,497.

    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 131,752 shares
    Change vs previous 13F +128,559 shares

    0.18% of the 13F portfolio, value $5,355,719.

    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 3,193 shares
    Change vs previous 13F +2,797 shares

    0.01% of the 13F portfolio, value $130,721.

    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 396 shares
    Change vs previous 13F +79 shares

    <0.01% of the 13F portfolio, value $22,818.

    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 317 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $26,387.

    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).