DEER PARK, IL
ETON PHARMACEUTICALS, INC.ETON— Latest position per institution from SEC 13F filings
15
Institutional holders
15.97M
Total shares held
353.88M
Estimated value
798.75K
Avg. position size
OPALEYE MANAGEMENT INC.
CIK 1595855
Shares
2.86M
Value
70.58M
Filed
Mar 31, 2026
ECOR1 CAPITAL, LLC
CIK 1587114
Shares
2.17M
Value
53.60M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
1.72M
Value
42.38M
Filed
Mar 31, 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
29.02M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
994.09K
Value
24.53M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
577.67K
Value
14.26M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
530.22K
Value
13.09M
Filed
Mar 31, 2026
NATIONAL PHILANTHROPIC TRUST
CIK 1785342
Shares
492.11K
Value
12.15M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
477.96K
Value
11.80M
Filed
Mar 31, 2026
WESTSIDE INVESTMENT MANAGEMENT, INC.
CIK 1538383
Shares
467.92K
Value
11.55M
Filed
Mar 31, 2026
ROUMELL ASSET MANAGEMENT, LLC
CIK 1331693
Shares
449.44K
Value
1.26M
Filed
Dec 31, 2022
OBERWEIS ASSET MANAGEMENT INC/
CIK 937886
Shares
439.30K
Value
10.84M
Filed
Mar 31, 2026
THOMPSON SIEGEL & WALMSLEY LLC
CIK 1008322
Shares
406.09K
Value
10.02K
Filed
Mar 31, 2026
PILLSBURY LAKE CAPITAL LLC
CIK 2111915
Shares
364.95K
Value
9.01M
Filed
Mar 31, 2026
CANNELL CAPITAL LLC
CIK 1058854
Shares
341.99K
Value
8.44M
Filed
Mar 31, 2026
BNP PARIBAS FINANCIAL MARKETS
CIK 1166588
Shares
302.11K
Value
7.46M
Filed
Mar 31, 2026
DIVISADERO STREET CAPITAL MANAGEMENT, LP
CIK 1901865
Shares
298K
Value
6.48M
Filed
Sep 30, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
282.39K
Value
929.06K
Filed
Jun 30, 2024
PARKMAN HEALTHCARE PARTNERS LLC
CIK 1777015
Shares
276.89K
Value
3.69M
Filed
Dec 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | OPALEYE MANAGEMENT INC. | 1595855 | 2.86M | 70.58M | Mar 31, 2026 |
| 2 | ECOR1 CAPITAL, LLC | 1587114 | 2.17M | 53.60M | Mar 31, 2026 |
| 3 | BLACKROCK, INC. | 2012383 | 1.72M | 42.38M | Mar 31, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 1.35M | 22.81M | Dec 31, 2025 |
| 5 | NANTAHALA CAPITAL MANAGEMENT, LLC | 1472322 | 1.18M | 29.02M | Mar 31, 2026 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 994.09K | 24.53M | Mar 31, 2026 |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 577.67K | 14.26M | Mar 31, 2026 |
| 8 | STATE STREET CORP | 93751 | 530.22K | 13.09M | Mar 31, 2026 |
| 9 | NATIONAL PHILANTHROPIC TRUST | 1785342 | 492.11K | 12.15M | Mar 31, 2026 |
| 10 | MORGAN STANLEY | 895421 | 477.96K | 11.80M | Mar 31, 2026 |
| 11 | WESTSIDE INVESTMENT MANAGEMENT, INC. | 1538383 | 467.92K | 11.55M | Mar 31, 2026 |
| 12 | ROUMELL ASSET MANAGEMENT, LLC | 1331693 | 449.44K | 1.26M | Dec 31, 2022 |
| 13 | OBERWEIS ASSET MANAGEMENT INC/ | 937886 | 439.30K | 10.84M | Mar 31, 2026 |
| 14 | THOMPSON SIEGEL & WALMSLEY LLC | 1008322 | 406.09K | 10.02K | Mar 31, 2026 |
| 15 | PILLSBURY LAKE CAPITAL LLC | 2111915 | 364.95K | 9.01M | Mar 31, 2026 |
| 16 | CANNELL CAPITAL LLC | 1058854 | 341.99K | 8.44M | Mar 31, 2026 |
| 17 | BNP PARIBAS FINANCIAL MARKETS | 1166588 | 302.11K | 7.46M | Mar 31, 2026 |
| 18 | DIVISADERO STREET CAPITAL MANAGEMENT, LP | 1901865 | 298K | 6.48M | Sep 30, 2025 |
| 19 | BLACKROCK FINANCE, INC. | 1364742 | 282.39K | 929.06K | Jun 30, 2024 |
| 20 | PARKMAN HEALTHCARE PARTNERS LLC | 1777015 | 276.89K | 3.69M | Dec 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.