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OSTRUM ASSET MANAGEMENT: BIIB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OSTRUM ASSET MANAGEMENT on BIIB, newest first. How the timeline and the estimate are built.

OSTRUM ASSET MANAGEMENT held 1,767 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,767 shares
    Change vs previous 13F 0 shares

    0.02% of the 13F portfolio, value $381,778.

    13F-HR 0001104659-26-095882 filed by OSTRUM ASSET MANAGEMENT
    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 1,767 shares
    Change vs previous 13F -709 shares

    0.02% of the 13F portfolio, value $323,944.

    13F-HR 0001104659-26-061164 filed by OSTRUM ASSET MANAGEMENT
    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 2,476 shares
    Change vs previous 13F -8,982 shares

    0.02% of the 13F portfolio, value $435,751.

    13F-HR 0001104659-26-015183 filed by OSTRUM ASSET MANAGEMENT
    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 11,458 shares
    Change vs previous 13F -3,067 shares

    0.07% of the 13F portfolio, value $1,605,037.

    13F-HR 0001104659-25-111991 filed by OSTRUM ASSET MANAGEMENT
    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 14,525 shares
    Change vs previous 13F -183 shares

    0.09% of the 13F portfolio, value $1,824,195.

    13F-HR 0001104659-25-077550 filed by OSTRUM ASSET MANAGEMENT
    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 14,708 shares
    Change vs previous 13F -173 shares

    0.11% of the 13F portfolio, value $2,012,643.

    13F-HR 0001104659-25-048517 filed by OSTRUM ASSET MANAGEMENT
    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 14,881 shares
    Change vs previous 13F -7,023 shares

    0.2% of the 13F portfolio, value $2,275,603.

    13F-HR 0001104659-25-012937 filed by OSTRUM ASSET MANAGEMENT
    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 21,904 shares
    Change vs previous 13F not available

    0.35% of the 13F portfolio, value $4,245,871.

    13F-HR 0001104659-24-117692 filed by OSTRUM ASSET MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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