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Disclosery

GROUP ONE TRADING LLC: BULL position timeline

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

GROUP ONE TRADING LLC held 499,107 BULL 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 499,107 shares
    Change vs previous 13F -330,836 shares

    0.09% of the 13F portfolio, value $3,254,178.

    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 829,943 shares
    Change vs previous 13F -608,544 shares

    0.13% of the 13F portfolio, value $3,983,726.

    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 1,438,487 shares
    Change vs previous 13F +1,161,554 shares

    0.33% of the 13F portfolio, value $11,177,044.

    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 276,933 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $4,095,839.

    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).