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Disclosery

Czech National Bank: BIIB position timeline

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

Czech National Bank held 42,453 BIIB shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 42,453 shares
    Change vs previous 13F +430 shares

    0.05% of the 13F portfolio, value $9,589,284.

    13F-HR 0001908923-26-000004 filed by Czech National Bank
    Accepted , ingested

  2. period ended2026-06-30
    13F 42,023 shares
    Change vs previous 13F +2,054 shares

    0.05% of the 13F portfolio, value $9,079,489.

    13F-HR 0001908923-26-000003 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 39,969 shares
    Change vs previous 13F +1,286 shares

    0.05% of the 13F portfolio, value $7,327,517.

    13F-HR 0001908923-26-000002 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 38,683 shares
    Change vs previous 13F +1,445 shares

    0.04% of the 13F portfolio, value $6,807,821.

    13F-HR 0001908923-26-000001 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 37,238 shares
    Change vs previous 13F +1,422 shares

    0.04% of the 13F portfolio, value $5,216,299.

    13F-HR 0001908923-25-000005 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 35,816 shares
    Change vs previous 13F +2,196 shares

    0.04% of the 13F portfolio, value $4,498,131.

    13F-HR 0001908923-25-000004 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 33,620 shares
    Change vs previous 13F +2,025 shares

    0.04% of the 13F portfolio, value $4,600,561.

    13F-HR 0001908923-25-000002 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 31,595 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $4,831,507.

    13F-HR 0001908923-25-000001 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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