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Disclosery

GROUP ONE TRADING LLC: MRNA position timeline

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

GROUP ONE TRADING LLC held 203,915 MRNA 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 203,915 shares
    Change vs previous 13F +156,014 shares

    0.41% of the 13F portfolio, value $14,280,167.

    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 47,901 shares
    Change vs previous 13F -142,054 shares

    0.08% of the 13F portfolio, value $2,433,371.

    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 189,955 shares
    Change vs previous 13F -115,862 shares

    0.17% of the 13F portfolio, value $5,601,773.

    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 305,817 shares
    Change vs previous 13F -67,871 shares

    0.24% of the 13F portfolio, value $7,899,253.

    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 373,688 shares
    Change vs previous 13F -70,750 shares

    0.34% of the 13F portfolio, value $10,310,052.

    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 444,438 shares
    Change vs previous 13F +192,534 shares

    0.52% of the 13F portfolio, value $12,599,817.

    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 251,904 shares
    Change vs previous 13F +74,831 shares

    0.36% of the 13F portfolio, value $10,474,168.

    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 177,073 shares
    Change vs previous 13F not available

    0.47% of the 13F portfolio, value $11,833,789.

    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).