Security key
29772L108
Eton Pharmaceuticals, Inc. - Common Stock (ETON)
CUSIP: 29772L108
Q1 2025 13F Holders as of 31 Mar 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 14,123,114
- Total 13F value
- $183,315,077
- Share change
- +948,751
- Put/Call ratio
- 54%
- SEC-reported price per share
- $12.98
- Number of holders
- 85
- Value change
- +$11,955,184
- Number of buys
- 54
- Number of sells
- 33
- Shares outstanding
- 27,281,304
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
Q1 2025
Institutions
85
Top holders
10
ETON full security history
Ownership snapshot
Full 13F holder table
Eton Pharmaceuticals, Inc. SEC filings
Eton Pharmaceuticals, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ETON - Eton Pharmaceuticals, 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
EcoR1 Capital, LLC
Disclosed value leader
Opaleye Management Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2024
13D/G
13F
Lead comparable stake: 7.7%
13D/G row: EcoR1 Capital, LLC
Showing 1-6 of 15 holder rows.
Quick read
EcoR1 Capital, LLC leads the comparable SEC ownership view at 7.7%.
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 EcoR1 Capital, LLC's linked filing trail.
Comparable ownership
Top 5
EcoR1 Capital, LLC
7.7%
Opaleye Management Inc.
10%
Nantahala Capital Management, LLC
4.1%
VANGUARD GROUP INC
3.9%
Westside Investment Management, Inc.
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 |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC |
13D/G
13F
Company
|
7.7%
|
$28,407,583
1,981,003 shares
|
$0 | 31 Dec 2024 |
| Opaleye Management Inc. |
13F
Company
|
10%
|
$37,989,572
2,852,070 shares
|
— | 31 Dec 2024 |
| Nantahala Capital Management, LLC |
13F
Company
|
4.1%
|
$14,898,194
1,118,483 shares
|
— | 31 Dec 2024 |
| VANGUARD GROUP INC |
13F
Company
|
3.9%
|
$14,168,577
1,063,707 shares
|
— | 31 Dec 2024 |
| Westside Investment Management, Inc. |
13F
Company
|
2.1%
|
$7,661,964
575,222 shares
|
— | 31 Dec 2024 |
| National Philanthropic Trust |
13F
Company
|
1.8%
|
$6,554,932
492,112 shares
|
— | 31 Dec 2024 |
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 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
85
Shares
14,123,114
Rows available
85
| 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 2025 vs Q1 2025 Across Filers
Q1 2025 holders
85
Q1 2025 holders
85
Holder diff
0
| Investor | Q1 2025 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q1 2025 value | Value change | Value Chg % |
|---|