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Eton Pharmaceuticals, Inc.
$37.50 +0.87 (+2.38%) At close · Jul 2
Market Cap
$1.03B
Shares
27,392,358

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 117
Total Value: $440,793,094
Total Shares: 17,860,286
Showing 1–100 of 123 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 115 13F filers
Top Holder
16.0%
Jun 2023 → Mar 2026 · range 15.6% – 38.0%
of institutional value
Top 5
49.9%
Jun 2023 → Mar 2026 · range 49.8% – 76.4%
of institutional value
Top 10
64.2%
Jun 2023 → Mar 2026 · range 64.1% – 92.8%
of institutional value
HHI
653
Jun 2023 → Mar 2026 · range 635 – 1,947
Broadly held
Showing 100 of 123
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Small Opaleye Management Inc. $70,584,800 16.01% 2,860,000
Mid EcoR1 Capital, LLC $53,603,429 12.16% 2,171,938
Mega BlackRock, Inc. $42,382,616 9.62% 1,717,286
Mid Nantahala Capital Management, LLC $29,022,470 6.58% 1,175,951
Mega VANGUARD CAPITAL MANAGEMENT LLC $24,534,116 5.57% 994,089
Mega GEODE CAPITAL MANAGEMENT, LLC $14,256,796 3.23% 577,666
Mega STATE STREET CORP $13,085,706 2.97% 530,215
Mid National Philanthropic Trust $12,145,324 2.76% 492,112
Mega MORGAN STANLEY $11,795,974 2.68% 477,957
Small Westside Investment Management, Inc. $11,548,142 2.62% 467,915
Mid OBERWEIS ASSET MANAGEMENT INC/ $10,841,924 2.46% 439,300
Mid THOMPSON SIEGEL & WALMSLEY LLC $10,022,276 2.27% 406,089
Small Pillsbury Lake Capital LLC $9,007,064 2.04% 364,954
Small CANNELL CAPITAL LLC $8,440,189 1.91% 341,985
Mega BNP PARIBAS ARBITRAGE, SA $7,456,025 1.69% 302,108
Mega NORTHERN TRUST CORP Bank $5,869,692 1.33% 237,832
Mega GOLDMAN SACHS GROUP INC $5,366,567 1.22% 217,446
Mid PRELUDE CAPITAL MANAGEMENT, LLC $4,659,633 1.06% 188,802
Small Aristides Capital LLC $4,591,491 1.04% 186,041
Small Panoramic Capital, LLC $4,565,800 1.04% 185,000
Small Lumbard & Kellner, LLC $4,341,483 0.98% 175,911
Large Woodline Partners LP $4,212,851 0.96% 170,699
Mega JPMORGAN CHASE & CO $4,192,538 0.95% 169,876
Mega UBS Group AG $4,169,883 0.95% 168,958
Mid Soleus Capital Management, L.P. $4,106,283 0.93% 166,381
Mega VANGUARD FIDUCIARY TRUST CO Bank $4,065,166 0.92% 164,715
Large RENAISSANCE TECHNOLOGIES LLC $4,030,762 0.91% 163,321
Small Diametric Capital, LP $3,872,933 0.88% 156,926
Mega BANK OF AMERICA CORP /DE/ Bank $3,562,976 0.81% 144,367
Mega Bank of New York Mellon Corp Bank $2,745,771 0.62% 111,255
Mega CITADEL ADVISORS LLC $2,660,873 0.60% 107,815
Mega TWO SIGMA INVESTMENTS, LP $2,625,779 0.60% 106,393
Mega JANE STREET GROUP, LLC $2,354,965 0.53% 95,420
Large MARSHALL WACE, LLP $2,041,553 0.46% 82,721
Large Walleye Capital LLC $2,022,846 0.46% 81,963
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,964,528 0.45% 79,600
Mega WELLINGTON MANAGEMENT GROUP LLP $1,730,660 0.39% 70,124
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,697,860 0.39% 68,795
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,631,348 0.37% 66,100
Large SEI INVESTMENTS CO $1,432,279 0.32% 58,034
Mega Nuveen, LLC $1,430,206 0.32% 57,950
Mid BOOTHBAY FUND MANAGEMENT, LLC $1,372,331 0.31% 55,605
Mid XTX Topco Ltd $1,277,732 0.29% 51,772
Mega BARCLAYS PLC $1,218,549 0.28% 49,374
Small Informed Momentum Co LLC $1,200,015 0.27% 48,623
Large Connor, Clark & Lunn Investment Management Ltd. $1,053,663 0.24% 42,693
Mid ANCHOR CAPITAL ADVISORS LLC $1,008,375 0.23% 40,858
Small Manatuck Hill Partners, LLC $987,200 0.22% 40,000
Small Numerai GP LLC $921,946 0.21% 37,356
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $841,193 0.19% 34,084
Large BLAIR WILLIAM & CO/IL $799,632 0.18% 32,400
Mega RHUMBLINE ADVISERS $758,317 0.17% 30,726
Large POLEN CAPITAL MANAGEMENT LLC $743,805 0.17% 30,138
Mega CITADEL ADVISORS LLC $740,400 0.17% 30,000
Micro Guilbault Capital LLC $573,193 0.13% 23,225
Mega Invesco Ltd. $564,529 0.13% 22,874
Mid Brevan Howard Capital Management LP $555,448 0.13% 22,506
Small Bridge City Capital, LLC $521,982 0.12% 21,150
Mega DEUTSCHE BANK AG\ Bank $521,636 0.12% 21,136
Mega JANE STREET GROUP, LLC $513,344 0.12% 20,800
Small ESSEX INVESTMENT MANAGEMENT CO LLC $498,091 0.11% 20,182
Micro JUNCTURE WEALTH STRATEGIES, LLC $473,387 0.11% 19,181
Large STATE OF WISCONSIN INVESTMENT BOARD $460,133 0.10% 18,644
Large HighTower Advisors, LLC $454,679 0.10% 18,423
Mega PRICE T ROWE ASSOCIATES INC /MD/ $435,651 0.10% 17,652
Mega JANE STREET GROUP, LLC $426,964 0.10% 17,300
Small CHICAGO TRUST Co NA Bank $412,156 0.09% 16,700
Large MetLife Investment Management, LLC $383,453 0.09% 15,537
Large BANK OF NOVA SCOTIA Bank $370,200 0.08% 15,000
Mega MILLENNIUM MANAGEMENT LLC $368,694 0.08% 14,939
Mid PDT Partners, LLC $367,509 0.08% 14,891
Mega CITADEL ADVISORS LLC $343,052 0.08% 13,900
Mid Voleon Capital Management LP $327,997 0.07% 13,290
Mega RAYMOND JAMES FINANCIAL INC $302,330 0.07% 12,250
Mid Aquatic Capital Management LLC $297,665 0.07% 12,061
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $297,097 0.07% 12,038
Mega AMERICAN CENTURY COMPANIES INC $294,333 0.07% 11,926
Small Quantum Private Wealth, LLC $283,820 0.06% 11,500
Mega ENVESTNET ASSET MANAGEMENT INC $265,038 0.06% 10,739
Large LOS ANGELES CAPITAL MANAGEMENT LLC $253,438 0.06% 10,269
Mega WELLS FARGO & COMPANY/MN $235,915 0.05% 9,559
Small State of Wyoming $234,410 0.05% 9,498
Mega Vanguard Global Advisers, LLC $221,897 0.05% 8,991
Mid Granite Investment Partners, LLC $209,261 0.05% 8,479
Large Jain Global LLC $204,523 0.05% 8,287
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $199,908 0.05% 8,100
Mid Quantbot Technologies LP $192,183 0.04% 7,787
Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $185,100 0.04% 7,500
Large Police & Firemen's Retirement System of New Jersey Pension $177,918 0.04% 7,209
Mid State of Alaska, Department of Revenue $171,352 0.04% 6,943
Mid China Universal Asset Management Co., Ltd. $117,452 0.03% 4,759
Large Russell Investments Group, Ltd. $65,895 0.01% 2,670
Mega CITIGROUP INC $62,884 0.01% 2,548
Mega Legal & General Group Plc $57,504 0.01% 2,330
Mid Ameritas Investment Partners, Inc. $53,481 0.01% 2,167
Mega FMR LLC $37,488 0.01% 1,519
Large Mirae Asset Global Investments Co., Ltd. $34,527 0.01% 1,399
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $34,255 0.01% 1,388
Small Truvestments Capital LLC $29,196 0.01% 1,183
Mid Tower Research Capital LLC (TRC) $28,530 0.01% 1,156
Key facts CIK 1710340 CUSIP 29772L108 13F (30d) 3 filings 3 filers Visit website Investor relations

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