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RENAISSANCE TECHNOLOGIES LLC: BIIB position timeline

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

RENAISSANCE TECHNOLOGIES LLC held 77,744 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 77,744 shares
    Change vs previous 13F -125,652 shares

    0.02% of the 13F portfolio, value $16,797,369.

    13F-HR 0001037389-26-000059 filed by RENAISSANCE TECHNOLOGIES LLC
    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 203,396 shares
    Change vs previous 13F -195,800 shares

    0.06% of the 13F portfolio, value $37,288,589.

    13F-HR 0001037389-26-000033 filed by RENAISSANCE TECHNOLOGIES LLC
    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 399,196 shares
    Change vs previous 13F -565,210 shares

    0.11% of the 13F portfolio, value $70,254,504.

    13F-HR 0001037389-26-000023 filed by RENAISSANCE TECHNOLOGIES LLC
    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 964,406 shares
    Change vs previous 13F -80,700 shares

    0.18% of the 13F portfolio, value $135,093,992.

    13F-HR 0001037389-25-000064 filed by RENAISSANCE TECHNOLOGIES LLC
    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 1,045,106 shares
    Change vs previous 13F +240,600 shares

    0.17% of the 13F portfolio, value $131,254,863.

    13F-HR 0001037389-25-000034 filed by RENAISSANCE TECHNOLOGIES LLC
    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 804,506 shares
    Change vs previous 13F -387,700 shares

    0.17% of the 13F portfolio, value $110,088,601.

    13F-HR 0001037389-25-000023 filed by RENAISSANCE TECHNOLOGIES LLC
    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 1,192,206 shares
    Change vs previous 13F +239,500 shares

    0.27% of the 13F portfolio, value $182,312,142.

    13F-HR 0001037389-25-000009 filed by RENAISSANCE TECHNOLOGIES LLC
    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 952,706 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $184,672,531.

    13F-HR 0001037389-24-000091 filed by RENAISSANCE TECHNOLOGIES LLC
    Filed (acceptance time not in the bulk data set), ingested

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