LEXINGTON, MA
ALDEYRA THERAPEUTICS, INC.ALDX— Latest position per institution from SEC 13F filings
15
Institutional holders
41.21M
Total shares held
107.22M
Estimated value
2.06M
Avg. position size
KNOLL CAPITAL MANAGEMENT, LLC
CIK 1325083
Shares
5.48M
Value
9.25M
Filed
Mar 31, 2026
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
4.19M
Value
21.68M
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
3.76M
Value
6.36M
Filed
Mar 31, 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
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
2.83M
Value
4.78M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.36M
Value
3.99M
Filed
Mar 31, 2026
KINGDON CAPITAL MANAGEMENT, L.L.C.
CIK 1000097
Shares
2.15M
Value
3.64M
Filed
Mar 31, 2026
683 CAPITAL MANAGEMENT, LLC
CIK 1404574
Shares
1.50M
Value
2.53M
Filed
Mar 31, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
1.40M
Value
2.37M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.25M
Value
2.12M
Filed
Mar 31, 2026
ARDSLEY ADVISORY PARTNERS LP
CIK 900529
Shares
1.25M
Value
2.11M
Filed
Mar 31, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
1.14M
Value
1.93M
Filed
Mar 31, 2026
LAURION CAPITAL MANAGEMENT LP
CIK 1390202
Shares
1.13M
Value
7.54M
Filed
Sep 30, 2023
STATE STREET CORP
CIK 93751
Shares
1.12M
Value
1.90M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
995.24K
Value
1.68M
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
863.19K
Value
1.46M
Filed
Mar 31, 2026
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
858.29K
Value
1.45K
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
807.78K
Value
1.37M
Filed
Mar 31, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 884414
Shares
796.82K
Value
1.35M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | KNOLL CAPITAL MANAGEMENT, LLC | 1325083 | 5.48M | 9.25M | Mar 31, 2026 |
| 2 | PERCEPTIVE ADVISORS LLC | 1224962 | 4.19M | 21.68M | Dec 31, 2025 |
| 3 | BLACKROCK, INC. | 2012383 | 3.76M | 6.36M | Mar 31, 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 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 2.83M | 4.78M | Mar 31, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.36M | 3.99M | Mar 31, 2026 |
| 8 | KINGDON CAPITAL MANAGEMENT, L.L.C. | 1000097 | 2.15M | 3.64M | Mar 31, 2026 |
| 9 | 683 CAPITAL MANAGEMENT, LLC | 1404574 | 1.50M | 2.53M | Mar 31, 2026 |
| 10 | D. E. SHAW & CO., INC. | 1009207 | 1.40M | 2.37M | Mar 31, 2026 |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.25M | 2.12M | Mar 31, 2026 |
| 12 | ARDSLEY ADVISORY PARTNERS LP | 900529 | 1.25M | 2.11M | Mar 31, 2026 |
| 13 | JANE STREET GROUP, LLC | 1595888 | 1.14M | 1.93M | Mar 31, 2026 |
| 14 | LAURION CAPITAL MANAGEMENT LP | 1390202 | 1.13M | 7.54M | Sep 30, 2023 |
| 15 | STATE STREET CORP | 93751 | 1.12M | 1.90M | Mar 31, 2026 |
| 16 | MILLENNIUM MANAGEMENT LLC | 1273087 | 995.24K | 1.68M | Mar 31, 2026 |
| 17 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 863.19K | 1.46M | Mar 31, 2026 |
| 18 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 858.29K | 1.45K | Mar 31, 2026 |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 807.78K | 1.37M | Mar 31, 2026 |
| 20 | JACOBS LEVY EQUITY MANAGEMENT, INC | 884414 | 796.82K | 1.35M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.