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13F Filing

BAKER BROS. ADVISORS LP

Healthcare-focused investment firm with deep biotech expertise.

Period2026.01.01 ~ 2026.03.31
Filed2026.05.15
Filing
Current Portfolio
$17.42B
Reported total portfolio value per 13F filing
Previous Portfolio
$17.08B
Change
+1.97%

Holdings

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#Company% of PortfolioActivity
Market Value
SharesChangeSector
1
Incyte Corporation
INCY
Incyte Corporation
16.62%
Increased
$2.89B
30,744,412
+421
Healthcare
2
BeOne Medicines Ltd.
ONC
BeOne Medicines Ltd.
15.00%
-
$2.61B
8,799,053
-
Health Technology
3
Insmed Incorporated
INSM
Insmed Incorporated
6.97%
Increased
$1.21B
7,421,111
+828,365
Health Technology
4
Madrigal Pharmaceuticals, Inc.
MDGL
Madrigal Pharmaceuticals, Inc.
6.44%
-
$1.12B
2,141,701
-
Health Technology
5
ACADIA Pharmaceuticals Inc.
ACAD
ACADIA Pharmaceuticals Inc.
5.48%
-
$955M
42,896,690
-
Health Technology
6
Revolution Medicines, Inc.
RVMD
Revolution Medicines, Inc.
5.34%
Increased
$929M
9,555,357
+100,000
Health Technology
7
Celcuity Inc.
CELC
Celcuity Inc.
5.19%
-
$904M
7,915,792
-
Health Technology
8
Kodiak Sciences Inc.
KOD
Kodiak Sciences Inc.
4.36%
-
$759M
19,919,186
-
Health Technology
9
Kymera Therapeutics, Inc.
KYMR
Kymera Therapeutics, Inc.
4.14%
-
$721M
8,657,242
-
Health Technology
10
Summit Therapeutics Inc.
SMMT
Summit Therapeutics Inc.
3.96%
-
$690M
36,391,063
-
Health Technology

Portfolio Changes

Buy Positions

New Buy

  • Mirum Pharmaceuticals, Inc.
    MIRMMirum Pharmaceuticals, Inc.

    Current 0.24%

    +445,975Shares

  • Evommune, Inc.
    EVMNEvommune, Inc.

    Current 0.11%

    +847,390Shares

  • Aktis Oncology, Inc.
    AKTSAktis Oncology, Inc.

    Current 0.10%

    +996,351Shares

  • Generate Biomedicines, Inc.
    GENBGenerate Biomedicines, Inc.

    Current 0.10%

    +1,423,602Shares

  • COMPASS Pathways plc
    CMPSCOMPASS Pathways plc

    Current 0.07%

    +2,344,720Shares

Additional Buy

  • Incyte Corporation
    INCYIncyte Corporation

    <0.01%

    +421Shares

  • Insmed Incorporated
    INSMInsmed Incorporated

    +12.56%

    +828,365Shares

  • Revolution Medicines, Inc.
    RVMDRevolution Medicines, Inc.

    +1.06%

    +100,000Shares

  • Praxis Precision Medicines, Inc.
    PRAXPraxis Precision Medicines, Inc.

    +55.63%

    +626,710Shares

  • GRAIL, Inc.
    GRALGRAIL, Inc.

    +93.19%

    +1,943,281Shares

Sell Positions

Full Exit

  • Ultragenyx Pharmaceutical Inc.
    RAREUltragenyx Pharmaceutical Inc.

    Full Exit

    0Shares

  • Terns Pharmaceuticals, Inc.
    TERNTerns Pharmaceuticals, Inc.

    Full Exit

    0Shares

  • BioCryst Pharmaceuticals, Inc.
    BCRXBioCryst Pharmaceuticals, Inc.

    Full Exit

    0Shares

  • Ventyx Biosciences, Inc.
    VTYXVentyx Biosciences, Inc.

    Full Exit

    0Shares

  • Nuvalent, Inc.
    NUVLNuvalent, Inc.

    Full Exit

    0Shares

Partial Exit

  • Roivant Sciences Ltd.
    ROIVRoivant Sciences Ltd.

    -12.37%

    -687,294Shares

  • Arrowhead Pharmaceuticals, Inc.
    ARWRArrowhead Pharmaceuticals, Inc.

    -8.40%

    -182,862Shares

  • Immatics N.V.
    IMTXImmatics N.V.

    -9.74%

    -1,177,401Shares

  • Immunocore Holdings plc
    IMCRImmunocore Holdings plc

    -68.38%

    -1,588,259Shares

  • Tectonic Therapeutic, Inc.
    TECXTectonic Therapeutic, Inc.

    -32.72%

    -295,612Shares

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