XENON PHARMACEUTICALS INC.

PublicCIK: 1582313
XENENASDAQ
13F Filings

Institutional Holders

XENON PHARMACEUTICALS INC.XENE— Latest position per institution from SEC 13F filings

15

Institutional holders

70.85M

Total shares held

3.47B

Estimated value

3.54M

Avg. position size

1

FMR LLC

CIK 315066

Shares

9.65M

Value

582.35M

Filed

Jun 30, 2026

2

BLACKROCK, INC.

CIK 2012383

Shares

7.52M

Value

454.06M

Filed

Jun 30, 2026

3

AVORO CAPITAL ADVISORS LLC

CIK 1633313

Shares

5.78M

Value

348.75M

Filed

Jun 30, 2026

4

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

CIK 1081019

Shares

5.60M

Value

92.74K

Filed

Jun 30, 2026

5

POLAR CAPITAL HOLDINGS PLC

CIK 1837309

Shares

4.57M

Value

275.88M

Filed

Jun 30, 2026

6

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 938206

Shares

4.42M

Value

266.70M

Filed

Jun 30, 2026

7

JUPITER TOPCO LLC

CIK 2146052

Shares

4.19M

Value

252.67M

Filed

Jun 30, 2026

8

JANUS HENDERSON GROUP LTD.

CIK 1274173

Shares

4.18M

Value

242.86M

Filed

Mar 31, 2026

9

PRICE T ROWE ASSOCIATES INC /MD/

CIK 80255

Shares

3.25M

Value

196.06K

Filed

Jun 30, 2026

10

JPMORGAN CHASE & CO

CIK 19617

Shares

2.62M

Value

157.38M

Filed

Jun 30, 2026

11

CAPITAL INTERNATIONAL INVESTORS

CIK 1562230

Shares

2.36M

Value

142.55M

Filed

Jun 30, 2026

12

T. ROWE PRICE INVESTMENT MANAGEMENT, INC.

CIK 1897612

Shares

2.17M

Value

130.90K

Filed

Jun 30, 2026

13

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

2.10M

Value

81.72M

Filed

Jun 30, 2024

14

PARADIGM BIOCAPITAL ADVISORS LP

CIK 1855655

Shares

2.04M

Value

79.67M

Filed

Jun 30, 2024

15

PICTET ASSET MANAGEMENT SA

CIK 1361570

Shares

2.03M

Value

78.26M

Filed

Jun 30, 2023

16

STATE STREET CORP

CIK 93751

Shares

1.97M

Value

118.89M

Filed

Jun 30, 2026

17

TWO SIGMA INVESTMENTS, LP

CIK 1179392

Shares

1.64M

Value

99.16M

Filed

Jun 30, 2026

18

DEERFIELD MANAGEMENT COMPANY, L.P.

CIK 1009258

Shares

1.62M

Value

97.52M

Filed

Jun 30, 2026

19

AFFINITY ASSET ADVISORS, LLC

CIK 1773195

Shares

1.59M

Value

96.27M

Filed

Jun 30, 2026

20

ALLIANCEBERNSTEIN L.P.

CIK 1109448

Shares

1.56M

Value

90.85M

Filed

Jun 30, 2026

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.