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Disclosery

GROUP ONE TRADING LLC: MU position timeline

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

GROUP ONE TRADING LLC held 72,926 MU 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 72,926 shares
    Change vs previous 13F -82,762 shares

    2.43% of the 13F portfolio, value $84,177,753.

    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 155,688 shares
    Change vs previous 13F +94,616 shares

    1.74% of the 13F portfolio, value $52,597,634.

    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 61,072 shares
    Change vs previous 13F -25,949 shares

    0.52% of the 13F portfolio, value $17,430,560.

    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 87,021 shares
    Change vs previous 13F +20,846 shares

    0.44% of the 13F portfolio, value $14,560,354.

    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 66,175 shares
    Change vs previous 13F -262,226 shares

    0.27% of the 13F portfolio, value $8,156,069.

    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 328,401 shares
    Change vs previous 13F +213,548 shares

    1.19% of the 13F portfolio, value $28,534,763.

    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 114,853 shares
    Change vs previous 13F -128,593 shares

    0.33% of the 13F portfolio, value $9,666,028.

    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 243,446 shares
    Change vs previous 13F not available

    1% of the 13F portfolio, value $25,247,785.

    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).