Security key
04746L104
LeonaBio, Inc. - Common Stock, $0.0001 par value (ATHA)
CUSIP: 04746L104
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / Common Stock, $0.0001 par value
- Total 13F shares
- 26,338,783
- Total 13F value
- $484,401,324
- Share change
- +4,807,127
- SEC-reported price per share
- $18.40
- Number of holders
- 68
- Value change
- +$83,845,702
- Number of buys
- 36
- Number of sells
- 26
- Shares outstanding
- 9,416,558
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
68
Top holders
10
ATHA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
LeonaBio, Inc. SEC filings
LeonaBio, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 04746L104
Recent filing periods:
Ownership snapshot
Top reported holders of ATHA - LeonaBio, Inc. - Common Stock, $0.0001 par value (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
31 Dec 2020
13F
Lead comparable stake: 33%
Showing 1-6 of 15 holder rows.
Quick read
PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 33%.
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
33%
RTW INVESTMENTS, LP
29%
VIKING GLOBAL INVESTORS LP
23%
Venrock Adviser, LLC
18%
CITADEL ADVISORS LLC
12%
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
|
33%
|
$106,682,000
3,114,805 shares
|
— | 31 Dec 2020 |
| RTW INVESTMENTS, LP |
13F
Company
|
29%
|
$88,899,000
2,685,779 shares
|
— | 31 Dec 2020 |
| VIKING GLOBAL INVESTORS LP |
13F
Company
|
23%
|
$72,632,000
2,120,653 shares
|
— | 31 Dec 2020 |
| Venrock Adviser, LLC |
13F
Company
|
18%
|
$57,938,000
1,691,623 shares
|
— | 31 Dec 2020 |
| CITADEL ADVISORS LLC |
13F
Company
|
12%
|
$39,770,000
1,161,158 shares
|
— | 31 Dec 2020 |
| Avidity Partners Management LP |
13F
Company
|
11%
|
$35,753,000
1,043,873 shares
|
— | 31 Dec 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 Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
68
Shares
26,338,783
Rows available
68
| 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 Q1 2021 vs Q1 2021 Across Filers
Q1 2021 holders
68
Q1 2021 holders
68
Holder diff
0
| Investor | Q1 2021 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q1 2021 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend