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SECTORAL ASSET MANAGEMENT INC: BIIB position timeline

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

SECTORAL ASSET MANAGEMENT INC held 1,850 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 1,850 shares
    Change vs previous 13F 0 shares

    0.28% of the 13F portfolio, value $399,711.

    13F-HR 0001104659-26-096554 filed by SECTORAL ASSET MANAGEMENT INC
    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 1,850 shares
    Change vs previous 13F -305 shares

    0.32% of the 13F portfolio, value $385,910.

    13F-HR 0001104659-26-062046 filed by SECTORAL ASSET MANAGEMENT INC
    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 2,155 shares
    Change vs previous 13F -220 shares

    0.3% of the 13F portfolio, value $379,259.

    13F-HR 0001104659-26-011921 filed by SECTORAL ASSET MANAGEMENT INC
    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 2,375 shares
    Change vs previous 13F 0 shares

    0.21% of the 13F portfolio, value $332,690.

    13F-HR 0001104659-25-112082 filed by SECTORAL ASSET MANAGEMENT INC
    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 2,375 shares
    Change vs previous 13F -480 shares

    0.2% of the 13F portfolio, value $298,276.

    13F-HR 0001104659-25-078356 filed by SECTORAL ASSET MANAGEMENT INC
    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 2,855 shares
    Change vs previous 13F -997 shares

    0.3% of the 13F portfolio, value $390,678.

    13F-HR 0001104659-25-049125 filed by SECTORAL ASSET MANAGEMENT INC
    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 3,852 shares
    Change vs previous 13F -2,175 shares

    0.39% of the 13F portfolio, value $589,048.

    13F-HR 0001104659-25-013709 filed by SECTORAL ASSET MANAGEMENT INC
    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 6,027 shares
    Change vs previous 13F not available

    0.69% of the 13F portfolio, value $1,168,274.

    13F-HR 0001104659-24-118494 filed by SECTORAL ASSET MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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