ALDEYRA THERAPEUTICS, INC.

PublicCIK: 1341235
ALDXNASDAQ
Location

LEXINGTON, MA

13F Filings

Institutional Holders

ALDEYRA THERAPEUTICS, INC.ALDX— Latest position per institution from SEC 13F filings

15

Institutional holders

41.03M

Total shares held

118.26M

Estimated value

2.05M

Avg. position size

1

KNOLL CAPITAL MANAGEMENT, LLC

CIK 1325083

Shares

5.48M

Value

11.66M

Filed

Jun 30, 2026

2

PERCEPTIVE ADVISORS LLC

CIK 1224962

Shares

4.19M

Value

21.68M

Filed

Dec 31, 2025

3

AQR CAPITAL MANAGEMENT LLC

CIK 1167557

Shares

3.75M

Value

7.99M

Filed

Jun 30, 2026

4

VANGUARD GROUP INC

CIK 102909

Shares

3.70M

Value

19.16M

Filed

Dec 31, 2025

5

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

3.62M

Value

11.99M

Filed

Jun 30, 2024

6

KINGDON CAPITAL MANAGEMENT, L.L.C.

CIK 1000097

Shares

2.65M

Value

5.65M

Filed

Jun 30, 2026

7

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

2.36M

Value

5.03M

Filed

Jun 30, 2026

8

D. E. SHAW & CO., INC.

CIK 1009207

Shares

1.94M

Value

4.13M

Filed

Jun 30, 2026

9

MARSHALL WACE, LLP

CIK 1318757

Shares

1.51M

Value

3.21M

Filed

Jun 30, 2026

10

683 CAPITAL MANAGEMENT, LLC

CIK 1404574

Shares

1.45M

Value

3.09M

Filed

Jun 30, 2026

11

JANE STREET GROUP, LLC

CIK 1595888

Shares

1.40M

Value

2.97M

Filed

Jun 30, 2026

12

ARDSLEY ADVISORY PARTNERS LP

CIK 900529

Shares

1.27M

Value

2.72M

Filed

Jun 30, 2026

13

BLACKROCK, INC.

CIK 2012383

Shares

1.26M

Value

2.68M

Filed

Jun 30, 2026

14

LAURION CAPITAL MANAGEMENT LP

CIK 1390202

Shares

1.13M

Value

7.54M

Filed

Sep 30, 2023

15

QUBE RESEARCH & TECHNOLOGIES LTD

CIK 1729829

Shares

1.13M

Value

2.40M

Filed

Jun 30, 2026

16

ACADIAN ASSET MANAGEMENT LLC

CIK 916542

Shares

1.06M

Value

2.26K

Filed

Jun 30, 2026

17

RENAISSANCE TECHNOLOGIES LLC

CIK 1037389

Shares

882K

Value

1.88M

Filed

Jun 30, 2026

18

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

794.86K

Value

1.69M

Filed

Jun 30, 2026

19

PROPEL BIO MANAGEMENT, LLC

CIK 1969764

Shares

730.61K

Value

1.23M

Filed

Mar 31, 2026

20

GOLDMAN SACHS GROUP INC

CIK 886982

Shares

725.44K

Value

1.55M

Filed

Jun 30, 2026

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