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Cambridge Investment Research Advisors, Inc.: BIIB position timeline

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

Cambridge Investment Research Advisors, Inc. held 8,104 BIIB shares at 2026-06-30 per its 13F-HR/A filed 2026-07-30.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 8,104 shares
    Change vs previous 13F +4,991 shares

    <0.01% of the 13F portfolio, value $1,751,000.

    13F-HR/A 0001419186-26-000006 filed by Cambridge Investment Research Advisors, 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 3,113 shares
    Change vs previous 13F -4,706 shares

    <0.01% of the 13F portfolio, value $571,000.

    13F-HR 0001419186-26-000003 filed by Cambridge Investment Research Advisors, 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 7,819 shares
    Change vs previous 13F +3,478 shares

    <0.01% of the 13F portfolio, value $1,376,000.

    13F-HR 0001419186-26-000001 filed by Cambridge Investment Research Advisors, 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 4,341 shares
    Change vs previous 13F +909 shares

    <0.01% of the 13F portfolio, value $608,000.

    13F-HR 0001419186-25-000008 filed by Cambridge Investment Research Advisors, 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 3,432 shares
    Change vs previous 13F -396 shares

    <0.01% of the 13F portfolio, value $431,000.

    13F-HR 0001419186-25-000006 filed by Cambridge Investment Research Advisors, 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 3,828 shares
    Change vs previous 13F +389 shares

    <0.01% of the 13F portfolio, value $524,000.

    13F-HR 0001419186-25-000004 filed by Cambridge Investment Research Advisors, 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 3,439 shares
    Change vs previous 13F +232 shares

    <0.01% of the 13F portfolio, value $526,000.

    13F-HR 0001419186-25-000003 filed by Cambridge Investment Research Advisors, 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 3,207 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $622,000.

    13F-HR 0001419186-24-000006 filed by Cambridge Investment Research Advisors, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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