Eton Pharmaceuticals, Inc. - ETON
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 5 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Opaleye Management Inc. | History | No change | 2,860,000 | 48,362 | 6.38% | 8.79% | 1 | 0 | 0.0% | Q4 2025 | Apr 13, 2026 |
| EcoR1 Capital, LLC | History | No change | 2,030,544 | 34,336 | 1.56% | 2.12% | 2 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 1,738,907 | 29,404 | 0.0% | 0.0% | 3 | +34,546 | 2.03% | Q4 2025 | Feb 12, 2026 |
| VANGUARD GROUP INC | History | Added to | 1,348,668 | 22,805 | 0.0% | 0.0% | 4 | +4,553 | 0.34% | Q4 2025 | Jan 29, 2026 |
| Nantahala Capital Management, LLC | History | No change | 1,175,951 | 19,885 | 0.66% | 0.89% | 5 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 565,051 | 9,557 | 0.0% | 0.0% | 6 | -8,979 | -1.56% | Q4 2025 | Feb 09, 2026 |
| STATE STREET CORP | History | Added to | 501,925 | 8,487 | 0.0% | 0.0% | 7 | +63,480 | 14.48% | Q4 2025 | Feb 13, 2026 |
| MORGAN STANLEY | History | Reduced | 493,914 | 8,352 | 0.0% | 0.0% | 8 | -92,132 | -15.72% | Q4 2025 | Feb 13, 2026 |
| Westside Investment Management, Inc. | History | Reduced | 470,940 | 7,963 | 1.27% | 1.64% | 9 | -1,600 | -0.34% | Q4 2025 | Jan 23, 2026 |
| OBERWEIS ASSET MANAGEMENT INC/ | History | Added to | 431,300 | 7,293 | 0.27% | 0.16% | 10 | +238,940 | 124.22% | Q4 2025 | Feb 17, 2026 |
| THOMPSON SIEGEL & WALMSLEY LLC | History | Reduced | 408,541 | 6,908 | 0.12% | 0.15% | 11 | -10,025 | -2.4% | Q4 2025 | Feb 10, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 277,458 | 4,691 | 0.0% | 0.0% | 12 | +47,668 | 20.74% | Q4 2025 | Feb 10, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 231,849 | 3,920 | 0.0% | 0.0% | 13 | -13,202 | -5.39% | Q4 2025 | Feb 17, 2026 |
| CANNELL CAPITAL LLC | History | Reduced | 216,917 | 3,668 | 1.78% | 1.51% | 14 | -238,488 | -52.37% | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 205,700 | 3,478 | 0.01% | 0.01% | 15 | -118,921 | -36.63% | Q4 2025 | Feb 12, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 196,263 | 3,318 | 0.0% | 0.0% | 16 | +6,099 | 3.21% | Q4 2025 | Mar 25, 2026 |
| Diametric Capital, LP | History | Added to | 193,155 | 3,266 | 0.88% | 0.8% | 17 | +93,846 | 94.5% | Q4 2025 | Feb 13, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 185,439 | 3,135 | 0.0% | 0.0% | 18 | -165,978 | -47.23% | Q4 2025 | Feb 11, 2026 |
| Lumbard & Kellner, LLC | History | Reduced | 174,944 | 2,958 | 1.04% | 1.41% | 19 | -1,356 | -0.77% | Q4 2025 | Feb 03, 2026 |
| Aristides Capital LLC | History | Reduced | 161,436 | 2,729 | 0.48% | 0.53% | 20 | -6,151 | -3.67% | Q4 2025 | Feb 26, 2026 |
| Bank of New York Mellon Corp | History | Reduced | 127,700 | 2,159 | 0.0% | 0.0% | 21 | -1,482 | -1.15% | Q4 2025 | Feb 10, 2026 |
| UBS Group AG | History | Reduced | 126,674 | 2,142 | 0.0% | 0.0% | 22 | -93,687 | -42.52% | Q4 2025 | Jan 29, 2026 |
| Jefferies Financial Group Inc. | History | Added to | 118,300 | 2,000 | 0.01% | 0.01% | 23 | +29,860 | 33.76% | Q4 2025 | Feb 09, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 104,796 | 1,772 | 0.0% | 0.0% | 24 | +30,139 | 40.37% | Q4 2025 | Feb 17, 2026 |
| Woodline Partners LP | History | New | 95,487 | 1,614 | 0.01% | — | 25 | +95,487 | New | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 85,044 | 1,438 | 0.0% | 0.0% | 26 | +75,044 | 750.44% | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 84,456 | 1,428 | 0.0% | 0.0% | 27 | +13,512 | 19.05% | Q4 2025 | Feb 12, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Reduced | 84,020 | 1,420 | 0.03% | 0.05% | 28 | -25,000 | -22.93% | Q4 2025 | Feb 17, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | Reduced | 81,201 | 1,373 | 0.0% | 0.0% | 29 | -7,018 | -7.96% | Q4 2025 | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 79,331 | 1,341 | 0.0% | 0.0% | 30 | +63,469 | 400.13% | Q4 2025 | Feb 17, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Reduced | 77,212 | 1,305 | 0.0% | 0.0% | 31 | -62 | -0.08% | Q4 2025 | Feb 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Reduced | 76,602 | 1,295 | 0.0% | 0.01% | 32 | -209,819 | -73.26% | Q4 2025 | Feb 17, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | Reduced | 76,586 | 1,295 | 0.0% | 0.01% | 33 | -67,225 | -46.75% | Q4 2025 | Feb 10, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 62,400 | 1,055 | 0.0% | 0.0% | 34 | -60,356 | -49.17% | Q4 2025 | Feb 17, 2026 |
| Nuveen, LLC | History | No change | 58,917 | 996 | 0.0% | 0.0% | 35 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| BARCLAYS PLC | History | Added to | 51,448 | 869 | 0.0% | 0.0% | 36 | +14,642 | 39.78% | Q4 2025 | Feb 13, 2026 |
| Russell Investments Group, Ltd. | History | Reduced | 49,694 | 840 | 0.0% | 0.0% | 37 | -5,171 | -9.42% | Q4 2025 | Feb 17, 2026 |
| PRELUDE CAPITAL MANAGEMENT, LLC | History | Added to | 45,325 | 766 | 0.06% | 0.07% | 38 | +3,452 | 8.24% | Q4 2025 | Feb 17, 2026 |
| ANCHOR CAPITAL ADVISORS LLC | History | Added to | 40,668 | 687 | 0.02% | 0.02% | 39 | +3,890 | 10.58% | Q4 2025 | Feb 10, 2026 |
| XTX Topco Ltd | History | Added to | 32,527 | 550 | 0.01% | 0.03% | 40 | +8,128 | 33.31% | Q4 2025 | Feb 17, 2026 |
| BLAIR WILLIAM & CO/IL | History | No change | 32,400 | 547 | 0.0% | 0.0% | 41 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RHUMBLINE ADVISERS | History | Reduced | 30,436 | 514 | 0.0% | 0.0% | 42 | -5,688 | -15.75% | Q4 2025 | Feb 13, 2026 |
| WELLS FARGO & COMPANY/MN | History | Added to | 28,293 | 478 | 0.0% | 0.0% | 43 | +11,584 | 69.33% | Q4 2025 | Feb 13, 2026 |
| STATE OF WISCONSIN INVESTMENT BOARD | History | New | 24,615 | 416 | 0.0% | — | 44 | +24,615 | New | Q4 2025 | Feb 17, 2026 |
| Aquatic Capital Management LLC | History | Reduced | 22,802 | 385 | 0.01% | 0.01% | 45 | -13,530 | -37.24% | Q4 2025 | Feb 17, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 20,182 | 341 | 0.05% | 0.07% | 46 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Invesco Ltd. | History | Added to | 19,691 | 332 | 0.0% | 0.0% | 47 | +6,213 | 46.1% | Q4 2025 | Feb 19, 2026 |
| JUNCTURE WEALTH STRATEGIES, LLC | History | Added to | 18,996 | 321 | 0.11% | 0.12% | 48 | +2,028 | 11.95% | Q4 2025 | Jan 27, 2026 |
| Bridge City Capital, LLC | History | Added to | 18,600 | 314 | 0.09% | 0.1% | 49 | +1,927 | 11.56% | Q4 2025 | Feb 13, 2026 |
| DEUTSCHE BANK AG\ | History | Added to | 18,249 | 308 | 0.0% | 0.0% | 50 | +850 | 4.89% | Q4 2025 | Feb 11, 2026 |
| CHICAGO TRUST Co NA | History | No change | 16,700 | 282 | 0.04% | 0.05% | 51 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| LOS ANGELES CAPITAL MANAGEMENT LLC | History | New | 14,631 | 267 | 0.0% | — | 52 | +14,631 | New | Q4 2025 | Feb 11, 2026 |
| Voleon Capital Management LP | History | Added to | 15,582 | 263 | 0.01% | 0.01% | 53 | +4,632 | 42.3% | Q4 2025 | Feb 17, 2026 |
| MetLife Investment Management, LLC | History | No change | 15,537 | 262 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | Added to | 15,369 | 260 | 0.0% | 0.0% | 55 | +1,845 | 13.64% | Q4 2025 | Feb 17, 2026 |
| D. E. Shaw & Co., Inc. | History | New | 15,331 | 259 | 0.0% | — | 56 | +15,331 | New | Q4 2025 | Feb 17, 2026 |
| PDT Partners, LLC | History | No change | 14,891 | 251 | 0.02% | 0.02% | 57 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA ADVISERS, LP | History | Reduced | 14,700 | 248 | 0.0% | 0.01% | 58 | -154,200 | -91.3% | Q4 2025 | Feb 17, 2026 |
| Squarepoint Ops LLC | History | Reduced | 13,482 | 227 | 0.0% | 0.0% | 59 | -46,163 | -77.4% | Q4 2025 | Feb 13, 2026 |
| Point72 Asset Management, L.P. | History | New | 12,925 | 218 | 0.0% | — | 60 | +12,925 | New | Q4 2025 | Feb 17, 2026 |
| CANADA PENSION PLAN INVESTMENT BOARD | History | New | 12,500 | 211 | 0.0% | — | 61 | +12,500 | New | Q4 2025 | Feb 17, 2026 |
| INTECH INVESTMENT MANAGEMENT LLC | History | Added to | 12,421 | 210 | 0.0% | 0.0% | 62 | +1,244 | 11.13% | Q4 2025 | Feb 10, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | Reduced | 12,250 | 207 | 0.0% | 0.0% | 63 | -74,832 | -85.93% | Q4 2025 | Feb 18, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Reduced | 11,864 | 200 | 0.0% | 0.0% | 64 | -143 | -1.19% | Q4 2025 | Feb 17, 2026 |
| Quantum Private Wealth, LLC | History | No change | 11,500 | 194 | 0.06% | 0.07% | 65 | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| ENVESTNET ASSET MANAGEMENT INC | History | Reduced | 10,944 | 185 | 0.0% | 0.0% | 66 | -433 | -3.81% | Q4 2025 | Feb 10, 2026 |
| Jump Financial, LLC | History | New | 10,551 | 178 | 0.0% | — | 67 | +10,551 | New | Q4 2025 | Feb 17, 2026 |
| Man Group plc | History | Reduced | 10,473 | 177 | 0.0% | 0.0% | 68 | -2,176 | -17.2% | Q4 2025 | Feb 17, 2026 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | History | No change | 10,000 | 169 | 0.0% | 0.0% | 69 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| Quantbot Technologies LP | History | Reduced | 9,357 | 158 | 0.01% | 0.01% | 70 | -2,175 | -18.86% | Q4 2025 | Feb 10, 2026 |
| State of Wyoming | History | Added to | 8,161 | 138 | 0.02% | 0.01% | 71 | +2,721 | 50.02% | Q4 2025 | Feb 11, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 8,100 | 136 | 0.0% | 0.0% | 72 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | No change | 7,209 | 121 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| State of Alaska, Department of Revenue | History | Added to | 6,943 | 117 | 0.0% | 0.0% | 74 | +5,522 | 388.6% | Q4 2025 | Jan 23, 2026 |
| SG Americas Securities, LLC | History | New | 6,471 | 109 | 0.0% | — | 75 | +6,471 | New | Q4 2025 | Jan 09, 2026 |
| Caitong International Asset Management Co., Ltd | History | New | 5,878 | 99 | 0.02% | — | 76 | +5,878 | New | Q4 2025 | Mar 03, 2026 |
| China Universal Asset Management Co., Ltd. | History | New | 4,370 | 73 | 0.01% | — | 77 | +4,370 | New | Q4 2025 | Jan 29, 2026 |
| AlphaQuest LLC | History | Reduced | 4,149 | 70 | 0.0% | 0.01% | 78 | -1 | -0.02% | Q4 2025 | Feb 09, 2026 |
| FMR LLC | History | Reduced | 3,076 | 52 | 0.0% | 0.0% | 79 | -2,618 | -45.98% | Q4 2025 | Feb 17, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 2,994 | 50 | 0.0% | 0.0% | 80 | +2,023 | 208.34% | Q4 2025 | Feb 17, 2026 |
| Legal & General Group Plc | History | Reduced | 2,731 | 46 | 0.0% | 0.0% | 81 | -121 | -4.24% | Q4 2025 | Feb 09, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 2,167 | 36 | 0.0% | 0.0% | 82 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Reduced | 1,578 | 26 | 0.0% | 0.0% | 83 | -23 | -1.44% | Q4 2025 | Feb 17, 2026 |
| CITIGROUP INC | History | Added to | 1,451 | 24 | 0.0% | 0.0% | 84 | +240 | 19.82% | Q4 2025 | Feb 13, 2026 |
| Mirae Asset Global Investments Co., Ltd. | History | New | 1,303 | 22 | 0.0% | — | 85 | +1,303 | New | Q4 2025 | Jan 26, 2026 |
| Truvestments Capital LLC | History | No change | 1,183 | 20 | 0.0% | 0.0% | 86 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| ROYAL BANK OF CANADA | History | New | 1,018 | 17 | 0.0% | — | 87 | +1,018 | New | Q4 2025 | Feb 17, 2026 |
| AMALGAMATED BANK | History | Reduced | 805 | 14 | 0.0% | 0.0% | 88 | -71 | -8.11% | Q4 2025 | Feb 05, 2026 |
| GF FUND MANAGEMENT CO. LTD. | History | New | 527 | 8 | 0.0% | — | 90 | +527 | New | Q4 2025 | Jan 27, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 500 | 8 | 0.0% | 0.0% | 89 | -262 | -34.38% | Q4 2025 | Feb 12, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | New | 221 | 3 | 0.0% | — | 91 | +221 | New | Q4 2025 | Feb 17, 2026 |
| OSAIC HOLDINGS, INC. | History | No change | 200 | 3 | 0.0% | 0.0% | 92 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Farther Finance Advisors, LLC | History | New | 146 | 2 | 0.0% | — | 96 | +146 | New | Q4 2025 | Jan 23, 2026 |
| Sterling Capital Management LLC | History | Added to | 167 | 2 | 0.0% | 0.0% | 93 | +105 | 169.35% | Q4 2025 | Feb 13, 2026 |
| Daiwa Securities Group Inc. | History | New | 89 | 2 | 0.0% | — | 94 | +89 | New | Q4 2025 | Feb 11, 2026 |
| Vermillion & White Wealth Management Group, LLC | History | No change | 150 | 2 | 0.0% | 0.0% | 95 | 0 | 0.0% | Q4 2025 | Feb 18, 2026 |
| Divisadero Street Capital Management, LP | History | Closed out | 0 | 0 | — | 0.28% | — | -298,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Soleus Capital Management, L.P. | History | Closed out | 0 | 0 | — | 0.22% | — | -200,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| APIS CAPITAL ADVISORS, LLC | History | Closed out | 0 | 0 | — | 0.56% | — | -117,600 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Informed Momentum Co LLC | History | Closed out | 0 | 0 | — | 0.13% | — | -52,897 | -100.0% | Q3 2025 | Nov 14, 2025 |
| WINTON GROUP Ltd | History | Closed out | 0 | 0 | — | 0.03% | — | -35,304 | -100.0% | Q3 2025 | Nov 13, 2025 |
| ACADIAN ASSET MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -26,410 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Calamos Advisors LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -23,634 | -100.0% | Q3 2025 | Oct 20, 2025 |
| Hillsdale Investment Management Inc. | History | Closed out | 0 | 0 | — | 0.01% | — | -18,503 | -100.0% | Q3 2025 | Nov 10, 2025 |
| NAVELLIER & ASSOCIATES INC | History | Closed out | 0 | 0 | — | 0.04% | — | -17,494 | -100.0% | Q3 2025 | Nov 06, 2025 |
| GSA CAPITAL PARTNERS LLP | History | Closed out | 0 | 0 | — | 0.03% | — | -14,785 | -100.0% | Q3 2025 | Nov 07, 2025 |
| PharVision Advisers, LLC | History | Closed out | 0 | 0 | — | 0.13% | — | -10,535 | -100.0% | Q3 2025 | Nov 17, 2025 |
| ALLIANCEBERNSTEIN L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -9,600 | -100.0% | Q3 2025 | Nov 14, 2025 |
| EntryPoint Capital, LLC | History | Closed out | 0 | 0 | — | 0.08% | — | -9,365 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Quarry LP | History | Closed out | 0 | 0 | — | 0.01% | — | -1,700 | -100.0% | Q3 2025 | Nov 14, 2025 |
| COMERICA BANK | History | Closed out | 0 | 0 | — | 0.0% | — | -219 | -100.0% | Q3 2025 | Nov 14, 2025 |
| SBI Securities Co., Ltd. | History | Reduced | 10 | 0 | — | 0.0% | — | -118 | -92.19% | Q4 2025 | Feb 03, 2026 |
| US BANCORP \DE\ | History | New | 54 | 0 | — | — | — | +54 | New | Q4 2025 | Jan 30, 2026 |
| Advisory Services Network, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -50 | -100.0% | Q3 2025 | Nov 18, 2025 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | Added to | 51 | 0 | — | — | — | +34 | 200.0% | Q4 2025 | Feb 06, 2026 |
| GAMMA Investing LLC | History | New | 23 | 0 | — | — | — | +23 | New | Q4 2025 | Jan 05, 2026 |
| Allworth Financial LP | History | New | 7 | 0 | — | — | — | +7 | New | Q4 2025 | Feb 05, 2026 |
| Arax Advisory Partners | History | Closed out | 0 | 0 | — | — | — | -6 | -100.0% | Q3 2025 | Nov 14, 2025 |
| CWM, LLC | History | Reduced | 26 | 0 | — | 0.0% | — | -5 | -16.13% | Q4 2025 | Jan 26, 2026 |
| Hughes Financial Services, LLC | History | New | 1 | 0 | — | — | — | +1 | New | Q4 2025 | Feb 11, 2026 |