ETON Eton Pharmaceuticals, Inc.
Eton Pharmaceuticals, Inc. (ETON) Institutional Ownership
What the institutions did with ETON last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Opaleye Management Inc. | 2.9M | 13.5% |
| Nantahala Capital Management, LLC | 2.4M | 11.1% |
| EcoR1 Capital, LLC | 2.2M | 10.3% |
| BlackRock, Inc. | 1.9M | 9.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 976.6K | 4.6% |
| MORGAN STANLEY | 768.0K | 3.6% |
| STATE STREET CORP | 701.8K | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 652.3K | 3.1% |
| OBERWEIS ASSET MANAGEMENT INC/ | 501.6K | 2.4% |
| National Philanthropic Trust | 492.1K | 2.3% |
| Westside Investment Management, Inc. | 431.2K | 2.0% |
| Pillsbury Lake Capital LLC | 387.2K | 1.8% |
| Nuveen, LLC | 375.7K | 1.8% |
| BNP PARIBAS FINANCIAL MARKETS | 322.5K | 1.5% |
| Woodline Partners LP | 310.9K | 1.5% |
| THOMPSON SIEGEL & WALMSLEY LLC | 297.2K | 1.4% |
| NORTHERN TRUST CORP | 255.8K | 1.2% |
| MARSHALL WACE, LLP | 249.2K | 1.2% |
| Panoramic Capital, LLC | 208.2K | 1.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 194.6K | 0.9% |
| JPMORGAN CHASE & CO | 191.6K | 0.9% |
| D. E. Shaw & Co., Inc. | 188.5K | 0.9% |
| JANE STREET GROUP, LLC | 185.7K | 0.9% |
| Lumbard & Kellner, LLC | 175.9K | 0.8% |
| CANNELL CAPITAL LLC | 170.7K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nantahala Capital Management, LLC | Increased | 1.2M | 2.4M | +1.2M |
| Nuveen, LLC | Increased | 58.0K | 375.7K | +317.8K |
| MORGAN STANLEY | Increased | 478.0K | 768.0K | +290.0K |
| D. E. Shaw & Co., Inc. | New | 0 | 188.5K | +188.5K |
| BlackRock, Inc. | Increased | 1.7M | 1.9M | +178.5K |
| STATE STREET CORP | Increased | 530.2K | 701.8K | +171.6K |
| CANNELL CAPITAL LLC | Reduced | 342.0K | 170.7K | -171.2K |
| MARSHALL WACE, LLP | Increased | 82.7K | 249.2K | +166.5K |
| Soleus Capital Management, L.P. | Sold Out | 166.4K | 0 | -166.4K |
| Prospect Capital Advisors, LLC | New | 0 | 157.2K | +157.2K |
| Woodline Partners LP | Increased | 170.7K | 310.9K | +140.2K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 163.3K | 52.3K | -111.0K |
| Informed Momentum Co LLC | Increased | 48.6K | 158.0K | +109.4K |
| THOMPSON SIEGEL & WALMSLEY LLC | Reduced | 406.1K | 297.2K | -108.9K |
| WELLS FARGO & COMPANY/MN | Increased | 9.6K | 114.7K | +105.1K |
| UBS Group AG | Reduced | 169.0K | 65.4K | -103.5K |
| WASATCH ADVISORS LP | New | 0 | 92.7K | +92.7K |
| JANE STREET GROUP, LLC | Increased | 95.4K | 185.7K | +90.3K |
| GOLDMAN SACHS GROUP INC | Reduced | 217.4K | 132.6K | -84.9K |
| Diametric Capital, LP | Reduced | 156.9K | 73.1K | -83.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 577.7K | 652.3K | +74.6K |
| Bridge City Capital, LLC | Increased | 21.2K | 88.1K | +67.0K |
| OBERWEIS ASSET MANAGEMENT INC/ | Increased | 439.3K | 501.6K | +62.3K |
| Squarepoint Ops LLC | New | 0 | 59.6K | +59.6K |
| CITADEL ADVISORS LLC | Reduced | 107.8K | 49.0K | -58.8K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Reduced | 188.8K | 137.6K | -51.2K |
| XTX Topco Ltd | Reduced | 51.8K | 6.0K | -45.8K |
| Point72 Asset Management, L.P. | New | 0 | 44.9K | +44.9K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 151.7K | 194.6K | +42.8K |
| DIMENSIONAL FUND ADVISORS LP | New | 0 | 42.5K | +42.5K |
| HSBC HOLDINGS PLC | New | 0 | 41.0K | +41.0K |
| Aristides Capital LLC | Reduced | 186.0K | 145.4K | -40.6K |
| ANCHOR CAPITAL ADVISORS LLC | Increased | 40.9K | 81.2K | +40.4K |
| Manatuck Hill Partners, LLC | Sold Out | 40.0K | 0 | -40.0K |
| Westside Investment Management, Inc. | Reduced | 467.9K | 431.2K | -36.8K |
| HighTower Advisors, LLC | Increased | 18.4K | 52.9K | +34.5K |
| Jefferies Financial Group Inc. | New | 0 | 34.0K | +34.0K |
| Y-Intercept (Hong Kong) Ltd | New | 0 | 33.5K | +33.5K |
| Numerai GP LLC | Increased | 37.4K | 70.1K | +32.8K |
| Riggs Asset Managment Co. Inc. | New | 0 | 32.0K | +32.0K |
| Aquatic Capital Management LLC | Increased | 12.1K | 43.8K | +31.7K |
| Sigma Planning Corp | New | 0 | 30.0K | +30.0K |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 42.7K | 13.2K | -29.5K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 28.3K | +28.3K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 8.1K | 32.8K | +24.7K |
| STRS OHIO | New | 0 | 23.6K | +23.6K |
| SEI INVESTMENTS CO | Reduced | 58.0K | 34.7K | -23.3K |
| Panoramic Capital, LLC | Increased | 185.0K | 208.2K | +23.2K |
| Pillsbury Lake Capital LLC | Increased | 365.0K | 387.2K | +22.2K |
| JPMORGAN CHASE & CO | Increased | 169.9K | 191.6K | +21.8K |
| PRUDENTIAL FINANCIAL INC | New | 0 | 21.1K | +21.1K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 302.1K | 322.5K | +20.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 34.1K | 14.5K | -19.6K |
| FIRST TRUST ADVISORS LP | New | 0 | 19.5K | +19.5K |
| CITIGROUP INC | Increased | 2.5K | 21.0K | +18.4K |
| NORTHERN TRUST CORP | Increased | 237.8K | 255.8K | +18.0K |
| NAVELLIER & ASSOCIATES INC | New | 0 | 18.0K | +18.0K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 994.1K | 976.6K | -17.5K |
| AMERICAN CENTURY COMPANIES INC | Increased | 11.9K | 29.1K | +17.2K |
| Man Group plc | New | 0 | 16.2K | +16.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.