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Natixis Investment Managers: BIIB position timeline

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

Natixis Investment Managers held 53,959 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 53,959 shares
    Change vs previous 13F -9,898 shares

    0.01% of the 13F portfolio, value $11,657,626.

    13F-HR 0001018331-26-000006 filed by NATIXIS ADVISORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 42,052 shares
    • NATIXIS: 11,907 shares

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

  2. period ended2026-03-31
    13F 63,857 shares
    Change vs previous 13F +1,417 shares

    0.01% of the 13F portfolio, value $11,706,508.

    13F-HR 0001018331-26-000004 filed by NATIXIS ADVISORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 41,272 shares
    • NATIXIS: 22,585 shares

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

  3. period ended2025-12-31
    13F 62,440 shares
    Change vs previous 13F -1,112 shares

    0.01% of the 13F portfolio, value $10,989,013.

    13F-HR 0001018331-26-000002 filed by NATIXIS ADVISORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 33,336 shares
    • NATIXIS: 29,104 shares

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

  4. period ended2025-09-30
    13F 63,552 shares
    Change vs previous 13F -9,428 shares

    0.01% of the 13F portfolio, value $8,901,963.

    13F-HR 0001018331-25-000009 filed by NATIXIS ADVISORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 39,516 shares
    • NATIXIS: 24,036 shares

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

  5. period ended2025-06-30
    13F 72,980 shares
    Change vs previous 13F +16,168 shares

    0.01% of the 13F portfolio, value $9,165,146.

    13F-HR 0001018331-25-000006 filed by NATIXIS ADVISORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 38,199 shares
    • NATIXIS: 34,781 shares

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

  6. period ended2025-03-31
    13F/A 56,812 shares
    Change vs previous 13F +11,459 shares

    0.01% of the 13F portfolio, value $7,758,949.

    13F-HR/A 0001104659-25-068933 filed by NATIXIS
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 26,907 shares
    • NATIXIS: 29,905 shares

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

  7. period ended2024-12-31
    13F 45,353 shares
    Change vs previous 13F -95,853 shares

    0.01% of the 13F portfolio, value $6,935,705.

    13F-HR 0001104659-25-012939 filed by NATIXIS
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 16,961 shares
    • NATIXIS: 28,392 shares

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

  8. period ended2024-09-30
    13F 141,206 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $27,371,474.

    13F-HR 0001104659-24-117703 filed by NATIXIS
    Filed (acceptance time not in the bulk data set), ingested

    • NATIXIS ADVISORS, LLC: 24,757 shares
    • NATIXIS: 116,449 shares

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