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BAKER BROS. ADVISORS LP: ONC position timeline

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

BAKER BROS. ADVISORS LP held 8,801,567 ONC 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 8,801,567 shares
    Change vs previous 13F +2,514 shares

    12.57% of the 13F portfolio, value $2,508,182,548.

    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 8,799,053 shares
    Change vs previous 13F 0 shares

    15% of the 13F portfolio, value $2,613,054,769.

    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 8,799,053 shares
    Change vs previous 13F 0 shares

    15.65% of the 13F portfolio, value $2,673,240,292.

    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 8,799,053 shares
    Change vs previous 13F 0 shares

    21.66% of the 13F portfolio, value $2,997,837,357.

    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 8,799,053 shares
    Change vs previous 13F 0 shares

    20.66% of the 13F portfolio, value $2,129,986,760.

    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 8,799,053 shares
    Change vs previous 13F -732,827 shares

    26.5% of the 13F portfolio, value $2,394,838,255.

    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 9,531,880 shares
    Change vs previous 13F -1,037,017 shares

    18.81% of the 13F portfolio, value $1,760,633,555.

    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 10,568,897 shares
    Change vs previous 13F not available

    24.59% of the 13F portfolio, value $2,372,823,065.

    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).