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Palo Alto Investors LP

Q1 2026 13F Holdings

  • Location
    palo alto, CA
  • Num holdings

    51

  • Value ($000)

    $653,863

  • Date Filed
    05/15/2026
  • Form type
    13F-HR
  • CIK
    0001306923
  • All SEC filings
  • Note
    Holdings aggregated across “other managers” listed in original SEC filing, see here for detailed holdings broken out by other managers
Compare Q1 2026 to
Select Quarter
Issuer Name
Class
CUSIP
VALUE
%
Shares
Principal
Option Type
I
INSM

INSMED INC

COM PAR $.01
457669307
$67.9M
10 %

415,269

A
ACAD

ACADIA PHARMACEUTICALS INC

COM
004225108
$63.95M
10 %

2,872,695

P
PTCT

PTC THERAPEUTICS INC

COM
69366J200
$62.79M
10 %

921,607

B
BMRN

BIOMARIN PHARMACEUTICAL INC

COM
09061G101
$38.71M
6 %

685,182

U
UTH

UNITED THERAPEUTICS CORP

COM
91307C102
$37.24M
6 %

62,809

A
ANAB

ANAPTYSBIO INC

COM
032724106
$35.39M
5 %

638,161

M
MIRM

MIRUM PHARMACEUTICALS INC

COM
604749101
$30.04M
5 %

325,175

D
DYN

DYNE THERAPEUTICS INC

COM
26818M108
$29.97M
5 %

1,652,972

B
BIIB

BIOGEN INC

COM
09062X103
$25.8M
4 %

140,719

I
IRON

DISC MEDICINE INC

COM
254604101
$25.69M
4 %

401,719

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