DEER PARK, IL
ETON PHARMACEUTICALS, INC.ETON— Latest position per institution from SEC 13F filings
15
Institutional holders
16.70M
Total shares held
539.13M
Estimated value
834.96K
Avg. position size
OPALEYE MANAGEMENT INC.
CIK 1595855
Shares
2.86M
Value
103.53M
Filed
Jun 30, 2026
ECOR1 CAPITAL, LLC
CIK 1587114
Shares
2.17M
Value
78.62M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
1.90M
Value
68.63M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
1.35M
Value
22.81M
Filed
Dec 31, 2025
NANTAHALA CAPITAL MANAGEMENT, LLC
CIK 1472322
Shares
1.18M
Value
42.57M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
976.57K
Value
35.35M
Filed
Jun 30, 2026
MORGAN STANLEY
CIK 895421
Shares
767.97K
Value
27.80M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
701.79K
Value
25.40M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
652.30K
Value
23.62M
Filed
Jun 30, 2026
OBERWEIS ASSET MANAGEMENT INC/
CIK 937886
Shares
501.60K
Value
18.16M
Filed
Jun 30, 2026
NATIONAL PHILANTHROPIC TRUST
CIK 1785342
Shares
492.11K
Value
17.81M
Filed
Jun 30, 2026
ROUMELL ASSET MANAGEMENT, LLC
CIK 1331693
Shares
449.44K
Value
1.26M
Filed
Dec 31, 2022
WESTSIDE INVESTMENT MANAGEMENT, INC.
CIK 1538383
Shares
431.16K
Value
15.61M
Filed
Jun 30, 2026
PILLSBURY LAKE CAPITAL LLC
CIK 2111915
Shares
387.16K
Value
14.02M
Filed
Jun 30, 2026
NUVEEN, LLC
CIK 1871926
Shares
375.71K
Value
13.60M
Filed
Jun 30, 2026
BNP PARIBAS FINANCIAL MARKETS
CIK 1166588
Shares
322.47K
Value
11.67M
Filed
Jun 30, 2026
WOODLINE PARTNERS LP
CIK 1784547
Shares
310.88K
Value
11.25M
Filed
Jun 30, 2026
DIVISADERO STREET CAPITAL MANAGEMENT, LP
CIK 1901865
Shares
298K
Value
6.48M
Filed
Sep 30, 2025
THOMPSON SIEGEL & WALMSLEY LLC
CIK 1008322
Shares
297.23K
Value
10.76K
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
282.39K
Value
929.06K
Filed
Jun 30, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | OPALEYE MANAGEMENT INC. | 1595855 | 2.86M | 103.53M | Jun 30, 2026 |
| 2 | ECOR1 CAPITAL, LLC | 1587114 | 2.17M | 78.62M | Jun 30, 2026 |
| 3 | BLACKROCK, INC. | 2012383 | 1.90M | 68.63M | Jun 30, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 1.35M | 22.81M | Dec 31, 2025 |
| 5 | NANTAHALA CAPITAL MANAGEMENT, LLC | 1472322 | 1.18M | 42.57M | Jun 30, 2026 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 976.57K | 35.35M | Jun 30, 2026 |
| 7 | MORGAN STANLEY | 895421 | 767.97K | 27.80M | Jun 30, 2026 |
| 8 | STATE STREET CORP | 93751 | 701.79K | 25.40M | Jun 30, 2026 |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 652.30K | 23.62M | Jun 30, 2026 |
| 10 | OBERWEIS ASSET MANAGEMENT INC/ | 937886 | 501.60K | 18.16M | Jun 30, 2026 |
| 11 | NATIONAL PHILANTHROPIC TRUST | 1785342 | 492.11K | 17.81M | Jun 30, 2026 |
| 12 | ROUMELL ASSET MANAGEMENT, LLC | 1331693 | 449.44K | 1.26M | Dec 31, 2022 |
| 13 | WESTSIDE INVESTMENT MANAGEMENT, INC. | 1538383 | 431.16K | 15.61M | Jun 30, 2026 |
| 14 | PILLSBURY LAKE CAPITAL LLC | 2111915 | 387.16K | 14.02M | Jun 30, 2026 |
| 15 | NUVEEN, LLC | 1871926 | 375.71K | 13.60M | Jun 30, 2026 |
| 16 | BNP PARIBAS FINANCIAL MARKETS | 1166588 | 322.47K | 11.67M | Jun 30, 2026 |
| 17 | WOODLINE PARTNERS LP | 1784547 | 310.88K | 11.25M | Jun 30, 2026 |
| 18 | DIVISADERO STREET CAPITAL MANAGEMENT, LP | 1901865 | 298K | 6.48M | Sep 30, 2025 |
| 19 | THOMPSON SIEGEL & WALMSLEY LLC | 1008322 | 297.23K | 10.76K | Jun 30, 2026 |
| 20 | BLACKROCK FINANCE, INC. | 1364742 | 282.39K | 929.06K | Jun 30, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.