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JANE STREET GROUP, LLC: BIIB position timeline

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

JANE STREET GROUP, LLC held 11,435 BIIB 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 11,435 shares
    Change vs previous 13F +966 shares

    <0.01% of the 13F portfolio, value $2,470,645.

    13F-HR 0001595888-26-000108 filed by JANE STREET GROUP, 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 10,469 shares
    Change vs previous 13F -13,070 shares

    <0.01% of the 13F portfolio, value $1,919,282.

    13F-HR 0001595888-26-000043 filed by JANE STREET GROUP, 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 23,539 shares
    Change vs previous 13F +18,199 shares

    <0.01% of the 13F portfolio, value $4,142,629.

    13F-HR 0001595888-26-000023 filed by JANE STREET GROUP, 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 5,340 shares
    Change vs previous 13F -27,701 shares

    <0.01% of the 13F portfolio, value $748,027.

    13F-HR 0001595888-25-000155 filed by JANE STREET GROUP, 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 33,041 shares
    Change vs previous 13F -4,213 shares

    0.01% of the 13F portfolio, value $4,149,619.

    13F-HR 0001595888-25-000117 filed by JANE STREET GROUP, 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/A 37,254 shares
    Change vs previous 13F -165,384 shares

    0.01% of the 13F portfolio, value $5,097,838.

    13F-HR/A 0001595888-25-000100 filed by JANE STREET GROUP, 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 202,638 shares
    Change vs previous 13F +92,349 shares

    0.05% of the 13F portfolio, value $30,987,403.

    13F-HR 0001595888-25-000068 filed by JANE STREET GROUP, 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 110,289 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $21,378,421.

    13F-HR 0001595888-24-000063 filed by JANE STREET GROUP, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).