Skip to content
Disclosery

Balyasny Asset Management: BIIB position timeline

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

Balyasny Asset Management held 265,090 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 265,090 shares
    Change vs previous 13F -384,956 shares

    0.1% of the 13F portfolio, value $57,275,345.

    13F-HR 0001193125-26-351940 filed by Balyasny Asset Management L.P.
    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 650,046 shares
    Change vs previous 13F +42,093 shares

    0.23% of the 13F portfolio, value $119,172,933.

    13F-HR 0001193125-26-226359 filed by Balyasny Asset Management L.P.
    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 607,953 shares
    Change vs previous 13F -626,196 shares

    0.2% of the 13F portfolio, value $106,993,648.

    13F-HR 0001193125-26-054303 filed by Balyasny Asset Management L.P.
    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 1,234,149 shares
    Change vs previous 13F +402,244 shares

    0.35% of the 13F portfolio, value $172,879,592.

    13F-HR 0001193125-25-282267 filed by Balyasny Asset Management L.P.
    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 831,905 shares
    Change vs previous 13F +45,686 shares

    0.24% of the 13F portfolio, value $104,478,949.

    13F-HR 0000950123-25-008224 filed by Balyasny Asset Management L.P.
    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 786,219 shares
    Change vs previous 13F +740,390 shares

    0.27% of the 13F portfolio, value $107,586,208.

    13F-HR 0000950123-25-005606 filed by Balyasny Asset Management L.P.
    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 45,829 shares
    Change vs previous 13F +45,829 shares

    0.02% of the 13F portfolio, value $7,008,171.

    13F-HR 0000950123-25-002486 filed by Balyasny Asset Management L.P.
    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 0 shares
    Change vs previous 13F not available

    13F-HR 0000950123-24-011629 filed by Balyasny Asset Management L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.