Eton Pharmaceuticals, Inc.
ETON- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001710340
In the last 90 days, Eton Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 164 institutions reported holding it in 13F filings for Q2 2026, worth $722.6M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Eton Pharmaceuticals, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 116
- +13 vs. Q4 2025
- Shares held
- 17.8M
- +2.73M (+18.1%) vs. Q4 2025
- Total value
- $438.6M
- +$183.9M (+72.2%) vs. Q4 2025
- New holders
- 30
- 36 more added
- Sold out
- 17
- 32 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ETON on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 164 | $722.6M |
| Q1 2026 | 116 | $438.6M |
| Q4 2025 | 104 | $277.5M |
| Q3 2025 | 103 | $394.7M |
| Q2 2025 | 87 | $243.3M |
| Q1 2025 | 86 | $189.7M |
| Q4 2024 | 71 | $181.5M |
| Q3 2024 | 48 | $60.0M |
| Q2 2024 | 45 | $28.7M |
| Q1 2024 | 44 | $28.8M |
| Q4 2023 | 56 | $33.5M |
| Q3 2023 | 50 | $28.8M |
| Q2 2023 | 33 | $20.9M |
| Q1 2023 | 35 | $22.5M |
| Q4 2022 | 31 | $18.2M |
| Q3 2022 | 32 | $14.4M |
| Q2 2022 | 29 | $14.6M |
| Q1 2022 | 31 | $27.4M |
| Q4 2021 | 32 | $24.1M |
| Q3 2021 | 37 | $29.5M |
| Q2 2021 | 46 | $48.1M |
| Q1 2021 | 50 | $63.7M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Eton Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Opaleye Management Inc. | 2,860,000 | $70.6M | 9.30% | 00.0% | Unchanged |
| EcoR1 Capital, LLC | 2,171,938 | $53.6M | 2.29% | +141,394+7.0% | Added |
| BlackRock, Inc. | 1,717,286 | $42.4M | 0.00% | −21,621−1.2% | Reduced |
| Nantahala Capital Management, LLC | 1,175,951 | $29.0M | 1.81% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 994,089 | $24.5M | 0.00% | +994,089 | New |
| Geode Capital Management, LLC | 577,666 | $14.3M | 0.00% | +12,615+2.2% | Added |
| State Street Corp | 530,215 | $13.1M | 0.00% | +28,290+5.6% | Added |
| National Philanthropic Trust | 492,112 | $12.1M | 0.13% | 00.0% | Unchanged |
| Morgan Stanley | 477,957 | $11.8M | 0.00% | −15,957−3.2% | Reduced |
| Westside Investment Management, Inc. | 467,915 | $11.5M | 1.77% | −3,025−0.6% | Reduced |
| Oberweis Asset Management Inc | 439,300 | $10.8M | 0.32% | +8,000+1.9% | Added |
| Thompson Siegel & Walmsley LLC | 406,089 | $10.0M | 0.18% | −2,452−0.6% | Reduced |
| Pillsbury Lake Capital LLC | 364,954 | $9.01M | 4.08% | +364,954 | New |
| Cannell Capital LLC | 341,985 | $8.44M | 5.48% | +125,068+57.7% | Added |
| BNP Paribas Arbitrage, SA | 302,108 | $7.46M | 0.00% | +24,650+8.9% | Added |
| Northern Trust Corp | 237,832 | $5.87M | 0.00% | +5,983+2.6% | Added |
| Goldman Sachs Group Inc | 217,446 | $5.37M | 0.00% | +21,183+10.8% | Added |
| Prelude Capital Management, LLC | 188,802 | $4.66M | 0.36% | +143,477+316.6% | Added |
| Aristides Capital LLC | 186,041 | $4.59M | 1.52% | +24,605+15.2% | Added |
| Panoramic Capital, LLC | 185,000 | $4.57M | 3.21% | +185,000 | New |
| Lumbard & Kellner, LLC | 175,911 | $4.34M | 1.50% | +967+0.6% | Added |
| Woodline Partners LP | 170,699 | $4.21M | 0.02% | +75,212+78.8% | Added |
| UBS Group AG | 168,958 | $4.17M | 0.00% | +42,284+33.4% | Added |
| Soleus Capital Management, L.P. | 166,381 | $4.11M | 0.17% | +166,381 | New |
| Vanguard Fiduciary Trust Co | 164,715 | $4.07M | 0.00% | +164,715 | New |
| Renaissance Technologies LLC | 163,321 | $4.03M | 0.01% | −42,379−20.6% | Reduced |
| Diametric Capital, LP | 156,926 | $3.87M | 1.01% | −36,229−18.8% | Reduced |
| JPMorgan Chase & Co | 169,876 | $3.84M | 0.00% | −15,563−8.4% | Reduced |
| Vanguard Portfolio Management LLC | 151,748 | $3.75M | 0.00% | +151,748 | New |
| Bank of America Corp | 144,367 | $3.56M | 0.00% | +39,571+37.8% | Added |
| Bank of New York Mellon Corp | 111,255 | $2.75M | 0.00% | −16,445−12.9% | Reduced |
| Citadel Advisors LLC | 107,815 | $2.66M | 0.00% | +33,671+45.4% | Added |
| Two Sigma Investments, LP | 106,393 | $2.63M | 0.00% | +29,791+38.9% | Added |
| Jane Street Group, LLC | 95,420 | $2.35M | 0.00% | +37,364+64.4% | Added |
| Marshall Wace, LLP | 82,721 | $2.04M | 0.00% | +82,721 | New |
| Walleye Capital LLC | 81,963 | $2.02M | 0.01% | +81,963 | New |
| Wellington Management Group LLP | 70,124 | $1.73M | 0.00% | −11,077−13.6% | Reduced |
| Charles Schwab Investment Management Inc | 68,795 | $1.70M | 0.00% | −8,417−10.9% | Reduced |
| SEI Investments Co | 58,034 | $1.43M | 0.00% | +58,034 | New |
| Nuveen, LLC | 57,950 | $1.43M | 0.00% | −967−1.6% | Reduced |
| Boothbay Fund Management, LLC | 55,605 | $1.37M | 0.03% | +55,605 | New |
| XTX Topco Ltd | 51,772 | $1.28M | 0.02% | +19,245+59.2% | Added |
| Barclays PLC | 49,374 | $1.22M | 0.00% | −2,074−4.0% | Reduced |
| EAM Investors, LLC | 48,623 | $1.20M | 0.14% | +48,623 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 42,693 | $1.05M | 0.00% | −33,893−44.3% | Reduced |
| Anchor Capital Advisors LLC | 40,858 | $1.01M | 0.03% | +190+0.5% | Added |
| Manatuck Hill Partners, LLC | 40,000 | $987.2K | 0.32% | +40,000 | New |
| Numerai GP LLC | 37,356 | $921.9K | 0.09% | +37,356 | New |
| Susquehanna International Group, LLP | 34,084 | $841.2K | 0.00% | +34,084 | New |
| Blair William & Co | 32,400 | $799.6K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 30,726 | $758.3K | 0.00% | +290+1.0% | Added |
| Polen Capital Management LLC | 30,138 | $743.8K | 0.01% | +30,138 | New |
| Guilbault Capital LLC | 23,225 | $573.2K | 0.63% | 00.0% | Unchanged |
| Invesco Ltd. | 22,874 | $564.5K | 0.00% | +3,183+16.2% | Added |
| Brevan Howard Capital Management LP | 22,506 | $555.4K | 0.01% | +22,506 | New |
| Bridge City Capital, LLC | 21,150 | $522.0K | 0.14% | +2,550+13.7% | Added |
| Deutsche Bank AG | 21,136 | $521.6K | 0.00% | +2,887+15.8% | Added |
| Essex Investment Management Co LLC | 20,182 | $498.1K | 0.08% | 00.0% | Unchanged |
| Juncture Wealth Strategies, LLC | 19,181 | $473.4K | 0.16% | +185+1.0% | Added |
| State of Wisconsin Investment Board | 18,644 | $460.1K | 0.00% | −5,971−24.3% | Reduced |
| HighTower Advisors, LLC | 18,423 | $454.7K | 0.00% | +18,423 | New |
| Price T Rowe Associates Inc | 17,652 | $436.0K | 0.00% | +2,283+14.9% | Added |
| Chicago Trust Co NA | 16,700 | $412.2K | 0.07% | 00.0% | Unchanged |
| MetLife Investment Management | 15,537 | $383.5K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 14,939 | $368.7K | 0.00% | −64,392−81.2% | Reduced |
| PDT Partners, LLC | 14,891 | $367.5K | 0.02% | 00.0% | Unchanged |
| Bank of Nova Scotia | 15,000 | $365.3K | 0.00% | +15,000 | New |
| Voleon Capital Management LP | 13,290 | $328.0K | 0.01% | −2,292−14.7% | Reduced |
| Raymond James Financial Inc | 12,250 | $302.3K | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 12,061 | $297.7K | 0.01% | −10,741−47.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 12,038 | $297.1K | 0.00% | +174+1.5% | Added |
| American Century Companies Inc | 11,926 | $294.3K | 0.00% | +11,926 | New |
| Quantum Private Wealth, LLC | 11,500 | $283.8K | 0.09% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 10,739 | $265.0K | 0.00% | −205−1.9% | Reduced |
| Los Angeles Capital Management LLC | 10,269 | $253.4K | 0.00% | −4,362−29.8% | Reduced |
| Wells Fargo & Company | 9,559 | $235.9K | 0.00% | −18,734−66.2% | Reduced |
| State of Wyoming | 9,498 | $234.4K | 0.03% | +1,337+16.4% | Added |
| Vanguard Global Advisers, LLC | 8,991 | $221.9K | 0.00% | +8,991 | New |
| Granite Investment Partners, LLC | 8,479 | $209.3K | 0.01% | +8,479 | New |
| Jain Global LLC | 8,287 | $204.5K | 0.00% | +8,287 | New |
| New York State Common Retirement Fund | 8,100 | $199.9K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 7,787 | $192.2K | 0.01% | −1,570−16.8% | Reduced |
| Northwestern Mutual Wealth Management Co | 7,500 | $185.1K | 0.00% | −2,500−25.0% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 7,209 | $177.9K | 0.00% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 6,943 | $171.0K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 4,759 | $117.5K | 0.01% | +389+8.9% | Added |
| Russell Investments Group, Ltd. | 2,670 | $65.9K | 0.00% | −47,024−94.6% | Reduced |
| Citigroup Inc | 2,548 | $62.9K | 0.00% | +1,097+75.6% | Added |
| Legal & General Group Plc | 2,330 | $57.5K | 0.00% | −401−14.7% | Reduced |
| Ameritas Investment Partners, Inc. | 2,167 | $53.5K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 1,519 | $37.5K | 0.00% | −1,557−50.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,399 | $34.5K | 0.00% | +96+7.4% | Added |
| California State Teachers Retirement System | 1,388 | $34.3K | 0.00% | −190−12.0% | Reduced |
| Truvestments Capital LLC | 1,183 | $29.2K | 0.01% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,156 | $28.5K | 0.00% | −1,838−61.4% | Reduced |
| GF Fund Management Co. Ltd. | 597 | $14.7K | 0.00% | +70+13.3% | Added |
| UBS Asset Management Americas Inc | 368 | $9.08K | 0.00% | +368 | New |
| Jones Financial Companies LLLP | 350 | $8.13K | 0.00% | +129+58.4% | Added |
| Parallel Advisors, LLC | 303 | $7.48K | 0.00% | +303 | New |
| SBI Securities Co., Ltd. | 263 | $6.49K | 0.00% | +253+2,530.0% | Added |