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 | $103.53M 2,860,000 shares | 9.38% | 0(0.0%)Unchanged | SEC filing ↗ Aug 14, 2026 | ▾ |
| 02 | EcoR1 Capital, LLC CIK 1587114 · View history | $78.62M 2,171,938 shares | 3.90% | 0(0.0%)Unchanged | SEC filing ↗ Aug 14, 2026 | ▾ |
| 03 | BlackRock, Inc. CIK 2012383 · View history | $68.63M 1,895,833 shares | 0.00% | +178.55K(+10.4%)Added | SEC filing ↗ Aug 7, 2026 | ▾ |
| 04 | Nantahala Capital Management, LLC CIK 1472322 · Amended · View history | $42.57M 1,175,951 shares | 2.57% | 0(0.0%)Unchanged | SEC filing ↗ Aug 19, 2026 | ▾ |
| 05 | VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history | $35.35M 976,570 shares | 0.00% | -17.52K(-1.8%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 06 | MORGAN STANLEY CIK 895421 · View history | $27.80M 767,972 shares | 0.00% | +290.01K(+60.7%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 07 | STATE STREET CORP CIK 93751 · View history | $25.40M 701,786 shares | 0.00% | +171.57K(+32.4%)Added | SEC filing ↗ Aug 7, 2026 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $23.62M 652,303 shares | 0.00% | +74.64K(+12.9%)Added | SEC filing ↗ Aug 12, 2026 | ▾ |
| 09 | OBERWEIS ASSET MANAGEMENT INC/ CIK 937886 · View history | $18.16M 501,600 shares | 0.38% | +62.30K(+14.2%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 10 | National Philanthropic Trust CIK 1785342 · View history | $17.81M 492,112 shares | 0.26% | 0(0.0%)Unchanged | SEC filing ↗ Aug 14, 2026 | ▾ |
| 11 | Westside Investment Management, Inc. CIK 1538383 · View history | $15.61M 431,160 shares | 2.05% | -36.76K(-7.9%)Reduced | SEC filing ↗ Jul 27, 2026 | ▾ |
| 12 | Pillsbury Lake Capital LLC CIK 2111915 · View history | $14.02M 387,157 shares | 3.85% | +22.20K(+6.1%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 13 | Nuveen, LLC CIK 1871926 · View history | $13.60M 375,707 shares | 0.00% | +317.76K(+548.3%)Added | SEC filing ↗ Aug 11, 2026 | ▾ |
| 14 | BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history | $11.67M 322,466 shares | 0.01% | +20.36K(+6.7%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 15 | Woodline Partners LP CIK 1784547 · View history | $11.25M 310,879 shares | 0.03% | +140.18K(+82.1%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 16 | THOMPSON SIEGEL & WALMSLEY LLC CIK 1008322 · View history | $10.76M 297,232 shares | 0.19% | -108.86K(-26.8%)Reduced | SEC filing ↗ Aug 11, 2026 | ▾ |
| 17 | NORTHERN TRUST CORP CIK 73124 · View history | $9.26M 255,849 shares | 0.00% | +18.02K(+7.6%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 18 | MARSHALL WACE, LLP CIK 1318757 · View history | $9.02M 249,182 shares | 0.01% | +166.46K(+201.2%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 19 | Panoramic Capital, LLC CIK 1950490 · View history | $7.54M 208,192 shares | 3.24% | +23.19K(+12.5%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 20 | VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · View history | $7.04M 194,591 shares | 0.00% | +42.84K(+28.2%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
Showing 20 / 164 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 164 reporting institutions.
This page includes 20 of 164 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 164 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":"2026Q2","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.