Skip to content
Disclosery

Robeco Institutional Asset Management B.V.: BIIB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Robeco Institutional Asset Management B.V. on BIIB, newest first. How the timeline and the estimate are built.

Robeco Institutional Asset Management B.V. held 791,092 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 791,092 shares
    Change vs previous 13F +27,918 shares

    0.21% of the 13F portfolio, value $170,923,341.

    13F-HR 0001418773-26-000003 filed by Robeco Institutional Asset Management B.V.
    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 763,174 shares
    Change vs previous 13F +152,266 shares

    0.2% of the 13F portfolio, value $139,912,696.

    13F-HR 0001418773-26-000002 filed by Robeco Institutional Asset Management B.V.
    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 610,908 shares
    Change vs previous 13F -60,146 shares

    0.15% of the 13F portfolio, value $107,513,704.

    13F-HR 0001418773-26-000001 filed by Robeco Institutional Asset Management B.V.
    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 671,054 shares
    Change vs previous 13F +222,297 shares

    0.14% of the 13F portfolio, value $94,001,243.

    13F-HR 0001418773-25-000002 filed by Robeco Institutional Asset Management B.V.
    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 448,757 shares
    Change vs previous 13F -4,772 shares

    0.09% of the 13F portfolio, value $56,359,391.

    13F-HR 0001085146-25-003972 filed by Robeco Institutional Asset Management B.V.
    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 453,529 shares
    Change vs previous 13F +45,253 shares

    0.12% of the 13F portfolio, value $62,060,908.

    13F-HR 0001085146-25-002276 filed by Robeco Institutional Asset Management B.V.
    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 408,276 shares
    Change vs previous 13F +133,568 shares

    0.12% of the 13F portfolio, value $62,433,565.

    13F-HR 0001085146-25-000410 filed by Robeco Institutional Asset Management B.V.
    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 274,708 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $53,249,398.

    13F-HR 0001085146-24-005220 filed by Robeco Institutional Asset Management B.V.
    Filed (acceptance time not in the bulk data set), ingested

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