LEXINGTON, MA
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
KNOLL CAPITAL MANAGEMENT, LLC
CIK 1325083
Shares
5.48M
Value
11.66M
Filed
Jun 30, 2026
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
4.19M
Value
21.68M
Filed
Dec 31, 2025
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
3.75M
Value
7.99M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.70M
Value
19.16M
Filed
Dec 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.62M
Value
11.99M
Filed
Jun 30, 2024
KINGDON CAPITAL MANAGEMENT, L.L.C.
CIK 1000097
Shares
2.65M
Value
5.65M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.36M
Value
5.03M
Filed
Jun 30, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
1.94M
Value
4.13M
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
1.51M
Value
3.21M
Filed
Jun 30, 2026
683 CAPITAL MANAGEMENT, LLC
CIK 1404574
Shares
1.45M
Value
3.09M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
1.40M
Value
2.97M
Filed
Jun 30, 2026
ARDSLEY ADVISORY PARTNERS LP
CIK 900529
Shares
1.27M
Value
2.72M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
1.26M
Value
2.68M
Filed
Jun 30, 2026
LAURION CAPITAL MANAGEMENT LP
CIK 1390202
Shares
1.13M
Value
7.54M
Filed
Sep 30, 2023
QUBE RESEARCH & TECHNOLOGIES LTD
CIK 1729829
Shares
1.13M
Value
2.40M
Filed
Jun 30, 2026
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
1.06M
Value
2.26K
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
882K
Value
1.88M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
794.86K
Value
1.69M
Filed
Jun 30, 2026
PROPEL BIO MANAGEMENT, LLC
CIK 1969764
Shares
730.61K
Value
1.23M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
725.44K
Value
1.55M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | KNOLL CAPITAL MANAGEMENT, LLC | 1325083 | 5.48M | 11.66M | Jun 30, 2026 |
| 2 | PERCEPTIVE ADVISORS LLC | 1224962 | 4.19M | 21.68M | Dec 31, 2025 |
| 3 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 3.75M | 7.99M | Jun 30, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 3.70M | 19.16M | Dec 31, 2025 |
| 5 | BLACKROCK FINANCE, INC. | 1364742 | 3.62M | 11.99M | Jun 30, 2024 |
| 6 | KINGDON CAPITAL MANAGEMENT, L.L.C. | 1000097 | 2.65M | 5.65M | Jun 30, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.36M | 5.03M | Jun 30, 2026 |
| 8 | D. E. SHAW & CO., INC. | 1009207 | 1.94M | 4.13M | Jun 30, 2026 |
| 9 | MARSHALL WACE, LLP | 1318757 | 1.51M | 3.21M | Jun 30, 2026 |
| 10 | 683 CAPITAL MANAGEMENT, LLC | 1404574 | 1.45M | 3.09M | Jun 30, 2026 |
| 11 | JANE STREET GROUP, LLC | 1595888 | 1.40M | 2.97M | Jun 30, 2026 |
| 12 | ARDSLEY ADVISORY PARTNERS LP | 900529 | 1.27M | 2.72M | Jun 30, 2026 |
| 13 | BLACKROCK, INC. | 2012383 | 1.26M | 2.68M | Jun 30, 2026 |
| 14 | LAURION CAPITAL MANAGEMENT LP | 1390202 | 1.13M | 7.54M | Sep 30, 2023 |
| 15 | QUBE RESEARCH & TECHNOLOGIES LTD | 1729829 | 1.13M | 2.40M | Jun 30, 2026 |
| 16 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 1.06M | 2.26K | Jun 30, 2026 |
| 17 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 882K | 1.88M | Jun 30, 2026 |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 794.86K | 1.69M | Jun 30, 2026 |
| 19 | PROPEL BIO MANAGEMENT, LLC | 1969764 | 730.61K | 1.23M | Mar 31, 2026 |
| 20 | GOLDMAN SACHS GROUP INC | 886982 | 725.44K | 1.55M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.