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Disclosery

MORGAN STANLEY: BIIB position timeline

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

MORGAN STANLEY held 2,411,271 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,411,271 shares
    Change vs previous 13F +240,331 shares

    0.03% of the 13F portfolio, value $520,979,947.

    13F-HR 0000895421-26-000243 filed by MORGAN STANLEY
    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 2,170,940 shares
    Change vs previous 13F -154,073 shares

    0.02% of the 13F portfolio, value $397,998,875.

    13F-HR 0000895421-26-000183 filed by MORGAN STANLEY
    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/A 2,325,013 shares
    Change vs previous 13F +73,478 shares

    0.02% of the 13F portfolio, value $409,179,635.

    13F-HR/A 0000895421-26-000187 filed by MORGAN STANLEY
    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/A 2,251,535 shares
    Change vs previous 13F +295,325 shares

    0.02% of the 13F portfolio, value $315,395,300.

    13F-HR/A 0000895421-26-000186 filed by MORGAN STANLEY
    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 1,956,210 shares
    Change vs previous 13F -34,458 shares

    0.02% of the 13F portfolio, value $245,680,815.

    13F-HR 0000895421-25-000499 filed by MORGAN STANLEY
    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 1,990,668 shares
    Change vs previous 13F +208,312 shares

    0.02% of the 13F portfolio, value $272,403,521.

    13F-HR 0000895421-25-000381 filed by MORGAN STANLEY
    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/A 1,782,356 shares
    Change vs previous 13F -104,890 shares

    0.02% of the 13F portfolio, value $272,558,304.

    13F-HR/A 0000895421-25-000380 filed by MORGAN STANLEY
    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/A 1,887,246 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $365,824,336.

    13F-HR/A 0000895421-25-000379 filed by MORGAN STANLEY
    Filed (acceptance time not in the bulk data set), ingested

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