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FIRST TRUST ADVISORS LP: BIIB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of FIRST TRUST ADVISORS LP on BIIB, newest first. How the timeline and the estimate are built.

FIRST TRUST ADVISORS LP held 682,021 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 682,021 shares
    Change vs previous 13F +8,063 shares

    0.09% of the 13F portfolio, value $147,357,277.

    13F-HR 0001445546-26-005965 filed by FIRST TRUST ADVISORS LP
    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 673,958 shares
    Change vs previous 13F +108,111 shares

    0.09% of the 13F portfolio, value $123,556,618.

    13F-HR 0001445546-26-003611 filed by FIRST TRUST ADVISORS LP
    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 565,847 shares
    Change vs previous 13F -274,710 shares

    0.07% of the 13F portfolio, value $99,583,415.

    13F-HR 0001445546-26-001219 filed by FIRST TRUST ADVISORS LP
    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 840,557 shares
    Change vs previous 13F -33,266 shares

    0.09% of the 13F portfolio, value $117,745,157.

    13F-HR 0001445546-25-007494 filed by FIRST TRUST ADVISORS LP
    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 873,823 shares
    Change vs previous 13F +212,403 shares

    0.09% of the 13F portfolio, value $109,743,561.

    13F-HR 0001445546-25-005500 filed by FIRST TRUST ADVISORS LP
    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 661,420 shares
    Change vs previous 13F +150,140 shares

    0.08% of the 13F portfolio, value $90,508,788.

    13F-HR 0001445546-25-003484 filed by FIRST TRUST ADVISORS LP
    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 511,280 shares
    Change vs previous 13F +152,789 shares

    0.07% of the 13F portfolio, value $78,184,873.

    13F-HR 0001445546-25-001262 filed by FIRST TRUST ADVISORS LP
    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 358,491 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $69,489,891.

    13F-HR 0001445546-24-007640 filed by FIRST TRUST ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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