Security key
01438T106
Aldeyra Therapeutics, Inc. - Common Stock, par value $0.001 per share (ALDX)
CUSIP: 01438T106
Q4 2020 13F Holders as of 31 Dec 2020
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Total 13F shares
- 22,091,649
- Total 13F value
- $151,541,784
- Share change
- -1,416,454
- Put/Call ratio
- 337%
- SEC-reported price per share
- $6.86
- Number of holders
- 95
- Value change
- -$10,169,396
- Number of buys
- 49
- Number of sells
- 33
- Shares outstanding
- 59,794,743
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
Q4 2020
Institutions
95
Top holders
10
ALDX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2021
Previous quarter: Q3 2020
Aldeyra Therapeutics, Inc. SEC filings
Aldeyra Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 01438T106
Recent filing periods:
Ownership snapshot
Top reported holders of ALDX - Aldeyra Therapeutics, Inc. - Common Stock, par value $0.001 per share (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
PERCEPTIVE ADVISORS LLC
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
15/15
Latest evidence
30 Sep 2020
13F
Lead comparable stake: 11%
Showing 1-6 of 15 holder rows.
Quick read
PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 11%.
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 PERCEPTIVE ADVISORS LLC's linked filing trail.
Comparable ownership
Top 5
PERCEPTIVE ADVISORS LLC
11%
VANGUARD GROUP INC
2.8%
ACUTA CAPITAL PARTNERS, LLC
2.8%
Avidity Partners Management LP
2.4%
Ghost Tree Capital, LLC
2.1%
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 |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
13F
Company
|
11%
|
$46,575,000
6,285,458 shares
|
— | 30 Sep 2020 |
| VANGUARD GROUP INC |
13F
Company
|
2.8%
|
$12,239,000
1,651,758 shares
|
— | 30 Sep 2020 |
| ACUTA CAPITAL PARTNERS, LLC |
13F
Company
|
2.8%
|
$12,202,000
1,646,700 shares
|
— | 30 Sep 2020 |
| Avidity Partners Management LP |
13F
Company
|
2.4%
|
$10,596,000
1,430,000 shares
|
— | 30 Sep 2020 |
| Ghost Tree Capital, LLC |
13F
Company
|
2.1%
|
$9,263,000
1,250,000 shares
|
— | 30 Sep 2020 |
| Prosight Management, LP |
13F
Company
|
1.8%
|
$8,092,000
1,092,000 shares
|
— | 30 Sep 2020 |
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 Q4 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
95
Shares
22,091,649
Rows available
95
| 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 Q4 2020 vs Q3 2020 Across Filers
Q3 2020 holders
84
Q4 2020 holders
95
Holder diff
11
| Investor | Q3 2020 Shares | Q4 2020 Shares | Share Diff | Share Chg % | Q3 2020 value | Q4 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend