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Disclosery

SECTOR GAMMA AS: BIIB position timeline

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

SECTOR GAMMA AS held 54,163 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 54,163 shares
    Change vs previous 13F -35,933 shares

    2.54% of the 13F portfolio, value $11,702,458.

    13F-HR 0000945621-26-001027 filed by SECTOR GAMMA AS
    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 90,096 shares
    Change vs previous 13F +4,621 shares

    3.9% of the 13F portfolio, value $16,517,300.

    13F-HR 0000945621-26-000644 filed by SECTOR GAMMA AS
    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 85,475 shares
    Change vs previous 13F +10,000 shares

    3.43% of the 13F portfolio, value $15,042,745.

    13F-HR 0000945621-26-000283 filed by SECTOR GAMMA AS
    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 75,475 shares
    Change vs previous 13F +24,836 shares

    2.62% of the 13F portfolio, value $10,572,538.

    13F-HR 0000945621-25-001004 filed by SECTOR GAMMA AS
    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 50,639 shares
    Change vs previous 13F +32,000 shares

    2.08% of the 13F portfolio, value $6,359,752.

    13F-HR 0000945621-25-000646 filed by SECTOR GAMMA AS
    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 18,639 shares
    Change vs previous 13F -10,361 shares

    0.82% of the 13F portfolio, value $2,550,561.

    13F-HR 0000945621-25-000464 filed by SECTOR GAMMA AS
    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 29,000 shares
    Change vs previous 13F -6,166 shares

    1.52% of the 13F portfolio, value $4,434,680.

    13F-HR 0000945621-25-000153 filed by SECTOR GAMMA AS
    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 35,166 shares
    Change vs previous 13F not available

    2.07% of the 13F portfolio, value $6,816,577.

    13F-HR 0000945621-24-000926 filed by SECTOR GAMMA AS
    Filed (acceptance time not in the bulk data set), ingested

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