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Palo Alto Investors LP

Q2 2026 13F filing

Updated 22 days ago

52 disclosed positions worth $723.7M

Portfolio value
$723.7M
Total holdings
52
New positions
5
Closed positions
4
Increased
4
Decreased
14
Turnover
17.3%
Filed
2026-08-19

Full holdings

Every line item disclosed in Q2 2026

?
1.N/A

PTC THERAPEUTICS INC

Value
$75M
Shares
918.8K
% Port
10.36%
A

ACADIA PHARMACEUTICALS INC

Value
$72.5M
Shares
2.86M
% Port
10.01%
I

INSMED INC

Value
$44.1M
Shares
414.0K
% Port
6.10%
M

MIRUM PHARMACEUTICALS INC

Value
$40.8M
Shares
348.8K
% Port
5.64%
A
5.ADI

ANAPTYSBIO INC

Value
$40.7M
Shares
603.5K
% Port
5.63%
B

BIOMARIN PHARMACEUTICAL INC

Value
$39.1M
Shares
682.8K
% Port
5.40%
D
7.DYN

DYNE THERAPEUTICS INC

Value
$36.6M
Shares
1.65M
% Port
5.06%
U

UNITED THERAPEUTICS CORP

Value
$33.9M
Shares
62.6K
% Port
4.69%
I

DISC MEDICINE INC

Value
$30.5M
Shares
416.6K
% Port
4.21%
B
10.BIIB

BIOGEN INC

Value
$30.3M
Shares
140.3K
% Port
4.19%
J

IOVANCE BIOTHERAPEUTICS INC

Value
$22M
Shares
5.30M
% Port
3.04%
R
12.RARE

ULTRAGENYX PHARMACEUTICAL IN

Value
$19.9M
Shares
596.5K
% Port
2.75%
N
13.NVCR

NOVOCURE LTD

Value
$19.4M
Shares
1.28M
% Port
2.68%
S
14.SNDX

SYNDAX PHARMACEUTICALS INC

Value
$18.9M
Shares
865.0K
% Port
2.61%
A
15.ANNX

ANNEXON INC

Value
$16.8M
Shares
2.95M
% Port
2.33%
B
16.BCAX

BICARA THERAPEUTICS INC

Value
$16.3M
Shares
550.4K
% Port
2.26%
C
17.CDNA

CAREDX INC

Value
$15.2M
Shares
531.9K
% Port
2.09%
C
18.CLDX

CELLDEX THERAPEUTICS INC

Value
$14.9M
Shares
399.9K
% Port
2.06%
?
19.N/A

COMPASS THERAPEUTICS INC

Value
$12.8M
Shares
5.83M
% Port
1.76%
A
20.ALKS

ALKERMES PLC

Value
$12.7M
Shares
242.6K
% Port
1.76%
?
21.N/A

FIRST TRACKS BIOTHERAPEUTICS

Value
$12.1M
Shares
603.5K
% Port
1.68%
P
22.PRTA

PROTHENA CORP PLC

Value
$11.2M
Shares
1.14M
% Port
1.55%
T
23.TVTX

TRAVERE THERAPEUTICS INC

Value
$9.5M
Shares
167.5K
% Port
1.31%
T
24.TSHA

TAYSHA GENE THERAPIES INC

Value
$9.5M
Shares
1.39M
% Port
1.31%
A
25.ACRS

ACLARIS THERAPEUTICS INC

Value
$8.5M
Shares
1.61M
% Port
1.18%
M
26.MGRB

AGIOS PHARMACEUTICALS INC

Value
$7.9M
Shares
213.6K
% Port
1.10%
C
27.CAPR

CAPRICOR THERAPEUTICS INC

Value
$5.5M
Shares
229.8K
% Port
0.76%
A
28.ALGN

ALIGN TECHNOLOGY INC

Value
$5.3M
Shares
31.4K
% Port
0.73%
O
29.ORKA

ORUKA THERAPEUTICS INC - Restricted

Value
$3.2M
Shares
33.5K
% Port
0.44%
X
30.XENE

XENON PHARMACEUTICALS INC

Value
$3.1M
Shares
51.3K
% Port
0.43%
N
31.NBIX

NEUROCRINE BIOSCIENCES INC

Value
$3.1M
Shares
18.1K
% Port
0.42%
E
32.EW

EDWARDS LIFESCIENCES CORP

Value
$3M
Shares
33.6K
% Port
0.42%
S
33.STOK

STOKE THERAPEUTICS INC

Value
$2.8M
Shares
84.6K
% Port
0.38%
C
34.CYTK

CYTOKINETICS INC

Value
$2.7M
Shares
32.2K
% Port
0.38%
Q
35.QUBT

PYXIS ONCOLOGY INC

Value
$2.6M
Shares
864.3K
% Port
0.36%
E
36.EW

EHEALTH INC

Value
$2.2M
Shares
1.48M
% Port
0.31%
C
37.CRSP

CRISPR THERAPEUTICS AG

Value
$2.2M
Shares
39.6K
% Port
0.30%
S
38.SGMT

SAGIMET BIOSCIENCES INC-A

Value
$1.9M
Shares
250.0K
% Port
0.27%
N
39.NUVB

NUVATION BIO INC

Value
$1.9M
Shares
326.6K
% Port
0.26%
B
40.BNTX

BIONTECH SE-ADR

Value
$1.8M
Shares
19.6K
% Port
0.25%
C
41.CMPS

COMPASS PATHWAYS PLC ADR

Value
$1.6M
Shares
115.6K
% Port
0.23%
H
42.HUM

HUMANA INC

Value
$1.6M
Shares
4.0K
% Port
0.22%
N

NEWAMSTERDAM PHARMA CO NV

Value
$1.5M
Shares
44.4K
% Port
0.21%
V
44.VSTM

VERASTEM INC

Value
$1.2M
Shares
309.7K
% Port
0.16%
M
45.MDGL

MADRIGAL PHARMACEUTICALS INC

Value
$960K
Shares
1.8K
% Port
0.13%
U
46.URGN

UROGEN PHARMA LTD

Value
$902K
Shares
24.5K
% Port
0.12%
B
47.BCYC

BICYCLE THERAPEUTICS PLC-ADR

Value
$856K
Shares
201.9K
% Port
0.12%
X
48.XERS

XERIS BIOPHARMA HOLDINGS INC

Value
$827K
Shares
104.4K
% Port
0.11%
A
49.ABEO

ABEONA THERAPEUTICS INC

Value
$673K
Shares
108.9K
% Port
0.09%
I
50.INSP

INSPIRE MEDICAL SYSTEMS INC

Value
$391K
Shares
8.8K
% Port
0.05%