Eton Pharmaceuticals, Inc. - ETON

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
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 70,584 9.3% 6.38% 1 0 0.0% Q1 2026 May 15, 2026
EcoR1 Capital, LLC History Added to 2,171,938 53,603 2.27% 1.56% 2 +141,394 6.96% Q1 2026 May 15, 2026
BlackRock, Inc. History Reduced 1,717,286 42,382 0.0% 0.0% 3 -21,621 -1.24% Q1 2026 May 13, 2026
Nantahala Capital Management, LLC History No change 1,175,951 29,022 1.07% 0.66% 4 0 0.0% Q1 2026 May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 994,089 24,534 0.0% 5 +994,089 New Q1 2026 May 15, 2026
VANGUARD GROUP INC History No change 1,348,668 22,805 0.0% 0.0% 6 0 0.0% Q4 2025 Jan 29, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 577,666 14,260 0.0% 0.0% 7 +12,615 2.23% Q1 2026 May 15, 2026
STATE STREET CORP History Added to 530,215 13,085 0.0% 0.0% 8 +28,290 5.64% Q1 2026 May 15, 2026
National Philanthropic Trust History No change 492,112 12,145 0.13% 0.08% 9 0 0.0% Q1 2026 May 15, 2026
MORGAN STANLEY History Reduced 477,957 11,795 0.0% 0.0% 10 -15,957 -3.23% Q1 2026 May 15, 2026
Westside Investment Management, Inc. History Reduced 467,915 11,548 1.77% 1.27% 11 -3,025 -0.64% Q1 2026 May 04, 2026
OBERWEIS ASSET MANAGEMENT INC/ History Added to 439,300 10,841 0.32% 0.27% 12 +8,000 1.85% Q1 2026 May 15, 2026
THOMPSON SIEGEL & WALMSLEY LLC History Reduced 406,089 10,022 0.18% 0.12% 13 -2,452 -0.6% Q1 2026 May 11, 2026
Pillsbury Lake Capital LLC History New 364,954 9,007 4.07% 14 +364,954 New Q1 2026 May 14, 2026
CANNELL CAPITAL LLC History Added to 341,985 8,440 5.18% 1.78% 15 +125,068 57.66% Q1 2026 May 15, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 302,108 7,456 0.0% 0.0% 16 +24,650 8.88% Q1 2026 May 12, 2026
NORTHERN TRUST CORP History Added to 237,832 5,869 0.0% 0.0% 17 +5,983 2.58% Q1 2026 May 14, 2026
GOLDMAN SACHS GROUP INC History Added to 217,446 5,366 0.0% 0.0% 18 +21,183 10.79% Q1 2026 May 15, 2026
PRELUDE CAPITAL MANAGEMENT, LLC History Added to 188,802 4,659 0.36% 0.06% 19 +143,477 316.55% Q1 2026 May 15, 2026
Aristides Capital LLC History Added to 186,041 4,591 0.99% 0.48% 20 +24,605 15.24% Q1 2026 May 14, 2026
Panoramic Capital, LLC History New 185,000 4,565 3.21% 21 +185,000 New Q1 2026 May 15, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 179,784 4,437 0.0% 0.0% 22 +117,384 188.12% Q1 2026 May 15, 2026
Lumbard & Kellner, LLC History Added to 175,911 4,341 1.5% 1.04% 23 +967 0.55% Q1 2026 May 15, 2026
Woodline Partners LP History Added to 170,699 4,212 0.02% 0.01% 24 +75,212 78.77% Q1 2026 May 15, 2026
UBS Group AG History Added to 168,958 4,169 0.0% 0.0% 25 +42,284 33.38% Q1 2026 May 05, 2026
Soleus Capital Management, L.P. History New 166,381 4,106 0.17% 26 +166,381 New Q1 2026 May 14, 2026
VANGUARD FIDUCIARY TRUST CO History New 164,715 4,065 0.0% 27 +164,715 New Q1 2026 May 08, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 163,321 4,030 0.01% 0.01% 28 -42,379 -20.6% Q1 2026 May 14, 2026
Diametric Capital, LP History Reduced 156,926 3,872 1.01% 0.88% 29 -36,229 -18.76% Q1 2026 May 15, 2026
JPMORGAN CHASE & CO History Reduced 169,876 3,835 0.0% 0.0% 30 -15,563 -8.39% Q1 2026 May 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 151,748 3,745 0.0% 31 +151,748 New Q1 2026 May 08, 2026
CITADEL ADVISORS LLC History Added to 151,715 3,744 0.0% 0.0% 32 +66,671 78.4% Q1 2026 May 15, 2026
BANK OF AMERICA CORP /DE/ History Added to 144,367 3,562 0.0% 0.0% 33 +39,571 37.76% Q1 2026 May 15, 2026
JANE STREET GROUP, LLC History Added to 133,520 3,295 0.0% 0.0% 34 +49,064 58.09% Q1 2026 May 12, 2026
Bank of New York Mellon Corp History Reduced 111,255 2,745 0.0% 0.0% 35 -16,445 -12.88% Q1 2026 May 05, 2026
TWO SIGMA INVESTMENTS, LP History Added to 106,393 2,625 0.0% 0.0% 36 +29,791 38.89% Q1 2026 May 15, 2026
MARSHALL WACE, LLP History New 82,721 2,041 0.0% 37 +82,721 New Q1 2026 May 14, 2026
Walleye Capital LLC History New 81,963 2,022 0.01% 38 +81,963 New Q1 2026 May 13, 2026
WELLINGTON MANAGEMENT GROUP LLP History Reduced 70,124 1,730 0.0% 0.0% 39 -11,077 -13.64% Q1 2026 May 15, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Reduced 68,795 1,697 0.0% 0.0% 40 -8,417 -10.9% Q1 2026 May 15, 2026
SEI INVESTMENTS CO History New 58,034 1,432 0.0% 41 +58,034 New Q1 2026 May 13, 2026
Nuveen, LLC History Reduced 57,950 1,430 0.0% 0.0% 42 -967 -1.64% Q1 2026 Apr 30, 2026
BOOTHBAY FUND MANAGEMENT, LLC History New 55,605 1,372 0.02% 43 +55,605 New Q1 2026 May 15, 2026
XTX Topco Ltd History Added to 51,772 1,277 0.02% 0.01% 44 +19,245 59.17% Q1 2026 May 15, 2026
BARCLAYS PLC History Reduced 49,374 1,218 0.0% 0.0% 45 -2,074 -4.03% Q1 2026 May 14, 2026
Informed Momentum Co LLC History New 48,623 1,200 0.14% 46 +48,623 New Q1 2026 May 13, 2026
Connor, Clark & Lunn Investment Management Ltd. History Reduced 42,693 1,053 0.0% 0.0% 47 -33,893 -44.25% Q1 2026 May 11, 2026
ANCHOR CAPITAL ADVISORS LLC History Added to 40,858 1,008 0.03% 0.02% 48 +190 0.47% Q1 2026 May 12, 2026
Manatuck Hill Partners, LLC History New 40,000 987 0.27% 49 +40,000 New Q1 2026 May 15, 2026
Numerai GP LLC History New 37,356 921 0.09% 50 +37,356 New Q1 2026 May 15, 2026
BLAIR WILLIAM & CO/IL History No change 32,400 799 0.0% 0.0% 51 0 0.0% Q1 2026 May 08, 2026
RHUMBLINE ADVISERS History Added to 30,726 758 0.0% 0.0% 52 +290 0.95% Q1 2026 May 12, 2026
POLEN CAPITAL MANAGEMENT LLC History New 30,138 743 0.01% 53 +30,138 New Q1 2026 May 14, 2026
Guilbault Capital LLC History No change 23,225 573 0.63% 0.44% 54 0 0.0% Q1 2026 May 14, 2026
Invesco Ltd. History Added to 22,874 564 0.0% 0.0% 55 +3,183 16.16% Q1 2026 May 12, 2026
Brevan Howard Capital Management LP History New 22,506 555 0.0% 56 +22,506 New Q1 2026 May 15, 2026
DEUTSCHE BANK AG\ History Added to 21,136 521 0.0% 0.0% 57 +2,887 15.82% Q1 2026 May 06, 2026
Bridge City Capital, LLC History Added to 21,150 521 0.14% 0.09% 58 +2,550 13.71% Q1 2026 May 13, 2026
ESSEX INVESTMENT MANAGEMENT CO LLC History No change 20,182 498 0.08% 0.05% 59 0 0.0% Q1 2026 May 11, 2026
JUNCTURE WEALTH STRATEGIES, LLC History Added to 19,181 473 0.16% 0.11% 60 +185 0.97% Q1 2026 Apr 14, 2026
STATE OF WISCONSIN INVESTMENT BOARD History Reduced 18,644 460 0.0% 0.0% 61 -5,971 -24.26% Q1 2026 May 15, 2026
HighTower Advisors, LLC History New 18,423 454 0.0% 62 +18,423 New Q1 2026 May 05, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History Added to 17,652 436 0.0% 0.0% 63 +2,283 14.85% Q1 2026 May 15, 2026
CHICAGO TRUST Co NA History No change 16,700 412 0.07% 0.04% 64 0 0.0% Q1 2026 Apr 24, 2026
MetLife Investment Management, LLC History No change 15,537 383 0.0% 0.0% 65 0 0.0% Q1 2026 May 14, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 14,939 368 0.0% 0.0% 66 -64,392 -81.17% Q1 2026 May 15, 2026
PDT Partners, LLC History No change 14,891 367 0.02% 0.02% 67 0 0.0% Q1 2026 May 15, 2026
BANK OF NOVA SCOTIA History New 15,000 365 0.0% 68 +15,000 New Q1 2026 May 14, 2026
Voleon Capital Management LP History Reduced 13,290 327 0.01% 0.01% 69 -2,292 -14.71% Q1 2026 May 15, 2026
RAYMOND JAMES FINANCIAL INC History No change 12,250 302 0.0% 0.0% 70 0 0.0% Q1 2026 May 14, 2026
Aquatic Capital Management LLC History Reduced 12,061 297 0.01% 0.01% 72 -10,741 -47.11% Q1 2026 May 15, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 12,038 297 0.0% 0.0% 71 +174 1.47% Q1 2026 May 15, 2026
AMERICAN CENTURY COMPANIES INC History New 11,926 294 0.0% 73 +11,926 New Q1 2026 May 15, 2026
Quantum Private Wealth, LLC History No change 11,500 283 0.09% 0.06% 74 0 0.0% Q1 2026 Apr 27, 2026
ENVESTNET ASSET MANAGEMENT INC History Reduced 10,739 265 0.0% 0.0% 75 -205 -1.87% Q1 2026 May 04, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History Reduced 10,269 253 0.0% 0.0% 76 -4,362 -29.81% Q1 2026 May 08, 2026
TWO SIGMA ADVISERS, LP History No change 14,700 248 0.0% 0.0% 77 0 0.0% Q4 2025 Feb 17, 2026
WELLS FARGO & COMPANY/MN History Reduced 9,559 235 0.0% 0.0% 78 -18,734 -66.21% Q1 2026 Jul 08, 2026
State of Wyoming History Added to 9,498 234 0.03% 0.02% 79 +1,337 16.38% Q1 2026 May 13, 2026
Vanguard Global Advisers, LLC History New 8,991 221 0.0% 80 +8,991 New Q1 2026 May 08, 2026
Granite Investment Partners, LLC History New 8,479 209 0.01% 81 +8,479 New Q1 2026 Apr 30, 2026
Jain Global LLC History New 8,287 204 0.0% 82 +8,287 New Q1 2026 May 15, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 8,100 199 0.0% 0.0% 83 0 0.0% Q1 2026 May 06, 2026
Quantbot Technologies LP History Reduced 7,787 192 0.01% 0.01% 84 -1,570 -16.78% Q1 2026 May 13, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History Reduced 7,500 185 0.0% 0.0% 85 -2,500 -25.0% Q1 2026 May 07, 2026
Police & Firemen's Retirement System of New Jersey History No change 7,209 177 0.0% 0.0% 86 0 0.0% Q1 2026 Apr 29, 2026
State of Alaska, Department of Revenue History No change 6,943 171 0.0% 0.0% 87 0 0.0% Q1 2026 Apr 20, 2026
China Universal Asset Management Co., Ltd. History Added to 4,759 117 0.01% 0.01% 88 +389 8.9% Q1 2026 Apr 27, 2026
AlphaQuest LLC History No change 4,149 70 0.0% 0.0% 89 0 0.0% Q4 2025 Feb 09, 2026
Russell Investments Group, Ltd. History Reduced 2,670 65 0.0% 0.0% 90 -47,024 -94.63% Q1 2026 May 08, 2026
CITIGROUP INC History Added to 2,548 62 0.0% 0.0% 91 +1,097 75.6% Q1 2026 May 11, 2026
Legal & General Group Plc History Reduced 2,330 57 0.0% 0.0% 92 -401 -14.68% Q1 2026 May 08, 2026
Ameritas Investment Partners, Inc. History No change 2,167 53 0.0% 0.0% 93 0 0.0% Q1 2026 May 13, 2026
FMR LLC History Reduced 1,519 37 0.0% 0.0% 94 -1,557 -50.62% Q1 2026 May 15, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 1,388 34 0.0% 0.0% 95 -190 -12.04% Q1 2026 May 15, 2026
Mirae Asset Global Investments Co., Ltd. History Added to 1,399 34 0.0% 0.0% 96 +96 7.37% Q1 2026 May 04, 2026
Truvestments Capital LLC History No change 1,183 29 0.01% 0.0% 97 0 0.0% Q1 2026 May 13, 2026
Tower Research Capital LLC (TRC) History Reduced 1,156 28 0.0% 0.0% 98 -1,838 -61.39% Q1 2026 May 15, 2026
GF FUND MANAGEMENT CO. LTD. History Added to 597 14 0.0% 0.0% 99 +70 13.28% Q1 2026 Apr 15, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History New 368 9 0.0% 100 +368 New Q1 2026 May 13, 2026
JONES FINANCIAL COMPANIES LLLP History Added to 350 8 0.0% 0.0% 101 +129 58.37% Q1 2026 May 15, 2026
Parallel Advisors, LLC History New 303 7 0.0% 102 +303 New Q1 2026 Jun 02, 2026
SBI Securities Co., Ltd. History Added to 263 6 0.0% 103 +253 2530.0% Q1 2026 Apr 27, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 179 4 0.0% 104 +128 250.98% Q1 2026 May 08, 2026
Sterling Capital Management LLC History No change 167 4 0.0% 0.0% 105 0 0.0% Q1 2026 Apr 22, 2026
OSAIC HOLDINGS, INC. History No change 200 4 0.0% 0.0% 106 0 0.0% Q1 2026 May 15, 2026
Farther Finance Advisors, LLC History Reduced 123 3 0.0% 0.0% 107 -23 -15.75% Q1 2026 Apr 07, 2026
CWM, LLC History Added to 107 2 0.0% 108 +81 311.54% Q1 2026 May 14, 2026
Advisory Services Network, LLC History New 50 1 0.0% 109 +50 New Q1 2026 May 15, 2026
Investors Portfolio Services LLC History New 34 1 0.0% 111 +34 New Q1 2026 May 14, 2026
Covestor Ltd History New 28 1 0.0% 110 +28 New Q1 2026 May 05, 2026
Jefferies Financial Group Inc. History Closed out 0 0 0.01% -118,300 -100.0% Q1 2026 May 07, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Closed out 0 0 0.03% -84,020 -100.0% Q1 2026 May 15, 2026
D. E. Shaw & Co., Inc. History Closed out 0 0 0.0% -15,331 -100.0% Q1 2026 May 15, 2026
Squarepoint Ops LLC History Closed out 0 0 0.0% -13,482 -100.0% Q1 2026 May 15, 2026
Point72 Asset Management, L.P. History Closed out 0 0 0.0% -12,925 -100.0% Q1 2026 May 15, 2026
CANADA PENSION PLAN INVESTMENT BOARD History Closed out 0 0 0.0% -12,500 -100.0% Q1 2026 May 15, 2026
INTECH INVESTMENT MANAGEMENT LLC History Closed out 0 0 0.0% -12,421 -100.0% Q1 2026 May 08, 2026
Jump Financial, LLC History Closed out 0 0 0.0% -10,551 -100.0% Q1 2026 May 14, 2026
Man Group plc History Closed out 0 0 0.0% -10,473 -100.0% Q1 2026 May 15, 2026
SG Americas Securities, LLC History Closed out 0 0 0.0% -6,471 -100.0% Q1 2026 Apr 16, 2026
Caitong International Asset Management Co., Ltd History Reduced 24 0 0.02% -5,854 -99.59% Q1 2026 May 11, 2026
ROYAL BANK OF CANADA History Reduced 13 0 0.0% -1,005 -98.72% Q1 2026 May 15, 2026
AMALGAMATED BANK History Closed out 0 0 0.0% -805 -100.0% Q1 2026 May 08, 2026
GROUP ONE TRADING LLC History Closed out 0 0 0.0% -500 -100.0% Q1 2026 May 13, 2026
Vermillion & White Wealth Management Group, LLC History Closed out 0 0 0.0% -150 -100.0% Q1 2026 May 15, 2026
Daiwa Securities Group Inc. History Closed out 0 0 0.0% -89 -100.0% Q1 2026 May 13, 2026
EverSource Wealth Advisors, LLC History New 38 0 +38 New Q1 2026 May 15, 2026
TWIN PEAKS WEALTH ADVISORS, LLC History New 38 0 +38 New Q1 2026 May 08, 2026
US BANCORP \DE\ History Reduced 19 0 -35 -64.81% Q1 2026 May 14, 2026
Hughes Financial Services, LLC History Added to 26 0 +25 2500.0% Q1 2026 Apr 29, 2026
Allworth Financial LP History Closed out 0 0 -7 -100.0% Q1 2026 May 14, 2026
GAMMA Investing LLC History Reduced 21 0 -2 -8.7% Q1 2026 Apr 06, 2026
Keating Financial Advisory Services, Inc. History New 1 0 +1 New Q1 2026 May 15, 2026