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Disclosery

BROWN ADVISORY INC: BIIB position timeline

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

BROWN ADVISORY INC held 3,155 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 3,155 shares
    Change vs previous 13F -3,689 shares

    <0.01% of the 13F portfolio, value $681,669.

    13F-HR 0001345929-26-000038 filed by BROWN ADVISORY 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 6,844 shares
    Change vs previous 13F -347 shares

    <0.01% of the 13F portfolio, value $1,254,711.

    13F-HR 0001345929-26-000028 filed by BROWN ADVISORY 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 7,191 shares
    Change vs previous 13F -22 shares

    <0.01% of the 13F portfolio, value $1,265,544.

    13F-HR 0001345929-26-000018 filed by BROWN ADVISORY 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 7,213 shares
    Change vs previous 13F -18 shares

    <0.01% of the 13F portfolio, value $1,010,396.

    13F-HR 0001345929-25-000002 filed by BROWN ADVISORY 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 7,231 shares
    Change vs previous 13F -26 shares

    <0.01% of the 13F portfolio, value $908,141.

    13F-HR 0001085146-25-005034 filed by BROWN ADVISORY 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 7,257 shares
    Change vs previous 13F -340,309 shares

    <0.01% of the 13F portfolio, value $993,048.

    13F-HR 0001085146-25-002448 filed by BROWN ADVISORY 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 347,566 shares
    Change vs previous 13F +14,339 shares

    0.07% of the 13F portfolio, value $53,149,750.

    13F-HR 0001085146-25-001491 filed by BROWN ADVISORY 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 333,227 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $64,592,722.

    13F-HR 0001085146-24-005669 filed by BROWN ADVISORY INC
    Filed (acceptance time not in the bulk data set), ingested

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