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BAKER BROS. ADVISORS LP: ALKS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BAKER BROS. ADVISORS LP on ALKS, newest first. How the timeline and the estimate are built.

BAKER BROS. ADVISORS LP held 10,012,267 ALKS 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 10,012,267 shares
    Change vs previous 13F 0 shares

    2.63% of the 13F portfolio, value $524,592,729.

    13F-HR 0001104659-26-097191 filed by BAKER BROS. ADVISORS LP
    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 10,012,267 shares
    Change vs previous 13F 0 shares

    2.03% of the 13F portfolio, value $354,033,761.

    13F-HR 0001104659-26-062547 filed by BAKER BROS. ADVISORS LP
    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 10,012,267 shares
    Change vs previous 13F +1,920,916 shares

    1.64% of the 13F portfolio, value $280,143,231.

    13F-HR 0001104659-26-016374 filed by BAKER BROS. ADVISORS LP
    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 8,091,351 shares
    Change vs previous 13F +1,680,748 shares

    1.75% of the 13F portfolio, value $242,740,530.

    13F-HR 0001104659-25-112595 filed by BAKER BROS. ADVISORS LP
    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 6,410,603 shares
    Change vs previous 13F +1,927,318 shares

    1.78% of the 13F portfolio, value $183,407,352.

    13F-HR 0001104659-25-078573 filed by BAKER BROS. ADVISORS LP
    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 4,483,285 shares
    Change vs previous 13F +301,534 shares

    1.64% of the 13F portfolio, value $148,038,071.

    13F-HR 0001104659-25-049518 filed by BAKER BROS. ADVISORS LP
    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 4,181,751 shares
    Change vs previous 13F 0 shares

    1.28% of the 13F portfolio, value $120,267,159.

    13F-HR 0001104659-25-014085 filed by BAKER BROS. ADVISORS LP
    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 4,181,751 shares
    Change vs previous 13F not available

    1.21% of the 13F portfolio, value $117,047,210.

    13F-HR 0001104659-24-118899 filed by BAKER BROS. ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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