Eton Pharmaceuticals, Inc. ETON
CIK 0001710340 · CUSIP 29772L108
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Opaleye Management Inc. CIK 1595855 · View history | $37.99M 2,852,070 shares | 6.65% | +72.07K(+2.6%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 02 | EcoR1 Capital, LLC CIK 1587114 · View history | $24.37M 1,829,603 shares | 0.97% | +1.26M(+223.2%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 03 | Nantahala Capital Management, LLC CIK 1472322 · View history | $14.90M 1,118,483 shares | 1.04% | +119.75K(+12.0%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 04 | VANGUARD GROUP INC CIK 102909 · View history | $14.17M 1,063,707 shares | 0.00% | +36.02K(+3.5%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 05 | Westside Investment Management, Inc. CIK 1538383 · View history | $7.66M 575,222 shares | 1.61% | -43.45K(-7.0%)Reduced | SEC filing ↗ Jan 17, 2025 | ▾ |
| 06 | National Philanthropic Trust CIK 1785342 · View history | $6.55M 492,112 shares | 0.09% | 0(0.0%)Unchanged | SEC filing ↗ May 15, 2026 | ▾ |
| 07 | Mink Brook Asset Management LLC CIK 2052205 · View history | $6.07M 455,805 shares | 5.81% | — | SEC filing ↗ Feb 14, 2025 | ▾ |
| 08 | CANNELL CAPITAL LLC CIK 1058854 · View history | $5.08M 381,323 shares | 1.04% | +381.32KNew | SEC filing ↗ Feb 13, 2025 | ▾ |
| 09 | BlackRock, Inc. CIK 2012383 · View history | $4.23M 317,625 shares | 0.00% | +32.77K(+11.5%)Added | SEC filing ↗ Feb 7, 2025 | ▾ |
| 10 | Parkman Healthcare Partners LLC CIK 1777015 · View history | $3.69M 276,890 shares | 0.49% | +16.66K(+6.4%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $3.58M 268,646 shares | 0.00% | -4.05K(-1.5%)Reduced | SEC filing ↗ Feb 12, 2025 | ▾ |
| 12 | ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history | $3.31M 248,505 shares | 0.01% | +142.55K(+134.5%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 13 | Aristides Capital LLC CIK 1595521 · View history | $3.22M 241,587 shares | 1.01% | +41.59K(+20.8%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 14 | BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history | $3.18M 238,962 shares | 0.07% | -14.40K(-5.7%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 15 | WASATCH ADVISORS LP CIK 814133 · View history | $3.08M 231,328 shares | 0.02% | -7.24K(-3.0%)Reduced | SEC filing ↗ Feb 13, 2025 | ▾ |
| 16 | Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history | $2.86M 214,878 shares | 0.01% | +149.86K(+230.5%)Added | SEC filing ↗ Feb 10, 2025 | ▾ |
| 17 | PARADIGM CAPITAL MANAGEMENT INC/NY CIK 1037792 · View history | $2.66M 200,000 shares | 0.12% | -100.00K(-33.3%)Reduced | SEC filing ↗ Feb 18, 2025 | ▾ |
| 18 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $2.57M 193,100 shares | 0.00% | +109.70K(+131.5%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history | $2.56M 192,326 shares | 0.00% | +72.98K(+61.1%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 20 | Acuitas Investments, LLC CIK 1524828 · View history | $2.48M 185,824 shares | 2.03% | -394.14K(-68.0%)Reduced | SEC filing ↗ Jan 31, 2025 | ▾ |
Showing 20 / 72 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 72 reporting institutions.
This page includes 20 of 72 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 72 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"29772L108","quarter":"2024Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.