Security key
01438T106
Aldeyra Therapeutics, Inc. - Common Stock (ALDX)
CUSIP: 01438T106
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 39,091,752
- Total 13F value
- $204,002,195
- Share change
- +4,998,502
- Put/Call ratio
- 11%
- SEC-reported price per share
- $5.22
- Number of holders
- 129
- Value change
- +$26,942,734
- Number of buys
- 79
- Number of sells
- 40
- Shares outstanding
- 61,515,529
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
129
Top holders
10
ALDX full security history
Ownership snapshot
Full 13F holder table
Aldeyra Therapeutics, Inc. SEC filings
Aldeyra Therapeutics, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ALDX - Aldeyra Therapeutics, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Knoll Capital Management,...
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
15/15
Latest evidence
30 Jun 2025
13F
3/4/5
Lead comparable stake: 8.9%
Showing 1-6 of 15 holder rows.
Quick read
Knoll Capital Management, LLC leads the comparable SEC ownership view at 8.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Knoll Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Knoll Capital Management, LLC
8.9%
PERCEPTIVE ADVISORS LLC
6.6%
BlackRock, Inc.
6.3%
VANGUARD GROUP INC
5.7%
ARDSLEY ADVISORY PARTNERS LP
3.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Knoll Capital Management, LLC |
13F
Company
|
8.9%
|
$20,971,226
5,475,516 shares
|
— | 30 Jun 2025 |
| PERCEPTIVE ADVISORS LLC |
3/4/5
13F
10%+ Owner · Company
|
6.6%
from 13F
|
$27,829,793
5,875,851 shares
|
— | 03 Apr 2025 |
| BlackRock, Inc. |
13F
Company
|
6.3%
|
$14,753,546
3,852,101 shares
|
— | 30 Jun 2025 |
| VANGUARD GROUP INC |
13F
Company
|
5.7%
|
$13,411,101
3,501,593 shares
|
— | 30 Jun 2025 |
| ARDSLEY ADVISORY PARTNERS LP |
13F
Company
|
3.3%
|
$7,851,500
2,050,000 shares
|
— | 30 Jun 2025 |
| AQR CAPITAL MANAGEMENT LLC |
13F
Company
|
2.4%
|
$5,644,699
1,473,812 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
129
Shares
39,091,752
Rows available
129
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
121
Q3 2025 holders
129
Holder diff
8
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|