Eton Pharmaceuticals, Inc. 13F holders
164 funds reported a position in Eton Pharmaceuticals, Inc. in their 13F for the quarter ended 30 June 2026, together 21.2 million shares worth $766.6 million. Against the quarter before, 51 opened a position, 57 added, 34 trimmed and 5 sold out; together they bought a net 2.0 million shares. The largest holders: Opaleye Management Inc., Nantahala Capital Management, LLC and EcoR1 Capital, LLC.
Funds holding164+48 on Q1 2026
Shares they held21.2Mworth $766.6 million
Net bought on the quarter2.0M sharesabout $74.2 million at the funds' values
Funds buying to selling108 to 39opened or added, to cut or sold
Opened 51Added 57Held 22Trimmed 34Sold out 5
What each fund did in ETON against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in ETON in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,241 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 48 reported a position in Eton Pharmaceuticals, Inc.: 18 opened one, 14 added, 9 trimmed and 1 sold out, a net 130,609 shares bought.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 7 reported a position in Eton Pharmaceuticals, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 652,303 shares worth $23.6 million, 0.0% of its reported book. New this quarter: Point72 Asset Management. Sold out: Millennium Management. In the quarter, 4 funds added or opened a position and 3 trimmed or sold out; together they sold a net 54,747 shares, about $2.0 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 652,303 | $23.6 million | 0.0% | +74,637 | added | 30 June 2026 | 13F |
| Norges Bank | 169,500 | $6.1 million | 0.0% | held | 30 June 2026 | 13F | |
| Two Sigma Investments | 116,291 | $4.2 million | 0.0% | +9,898 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 52,300 | $1.9 million | 0.0% | -111,021 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 48,969 | $1.8 million | 0.0% | -58,846 | trimmed | 30 June 2026 | 13F |
| Point72 Asset Management | 44,918 | $1.6 million | 0.0% | +44,918 | new | 30 June 2026 | 13F |
| FMR LLC | 2,125 | $76,912 | 0.0% | +606 | added | 30 June 2026 | 13F |
| Millennium Management | 0 | $0 | 0.0% | -14,939 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Opaleye Management Inc. | 2,860,000 | 13.50% | $103.5 million | 9.38% | no change | 13F |
| Nantahala Capital Management, LLC | 2,351,902 | 11.10% | $85.1 million | 2.59% | 13F | |
| EcoR1 Capital, LLC | 2,171,938 | 10.25% | $78.6 million | 3.90% | no change | 13F |
| BlackRock, Inc. | 1,895,833 | 8.95% | $68.6 million | 0.00% | +178,547 | 13F |
| Vanguard Capital Management LLC | 976,570 | 4.61% | $35.4 million | 0.00% | -17,519 | 13F |
| Morgan Stanley | 767,972 | 3.63% | $27.8 million | 0.00% | +290,015 | 13F |
| State Street Corp. | 701,786 | 3.31% | $25.4 million | 0.00% | +171,571 | 13F |
| Geode Capital Management, LLC | 652,303 | 3.08% | $23.6 million | 0.00% | +74,637 | 13F |
| Oberweis Asset Management Inc. | 501,600 | 2.37% | $18.2 million | 0.38% | +62,300 | 13F |
| National Philanthropic Trust | 492,112 | 2.32% | $17.8 million | 0.26% | no change | 13F |
| Westside Investment Management, Inc. | 431,160 | 2.04% | $15.6 million | 2.05% | -36,755 | 13F |
| Pillsbury Lake Capital LLC | 387,157 | 1.83% | $14.0 million | 3.85% | +22,203 | 13F |
| Nuveen, LLC | 375,707 | 1.77% | $13.6 million | 0.00% | +317,757 | 13F |
| BNP Paribas Financial Markets | 322,466 | 1.52% | $11.7 million | 0.01% | +20,358 | 13F |
| Woodline Partners LP | 310,879 | 1.47% | $11.3 million | 0.04% | +140,180 | 13F |
| Thompson Siegel & Walmsley LLC | 297,232 | 1.40% | $10.8 million | 0.19% | -108,857 | 13F |
| Northern Trust Corp. | 255,849 | 1.21% | $9.3 million | 0.00% | +18,017 | 13F |
| Marshall Wace, LLP | 249,182 | 1.18% | $9.0 million | 0.01% | +166,461 | 13F |
| Panoramic Capital, LLC | 208,192 | 0.98% | $7.5 million | 3.24% | +23,192 | 13F |
| Vanguard Portfolio Management LLC | 194,591 | 0.92% | $7.0 million | 0.00% | +42,843 | 13F |
| JPMorgan Chase & Co. | 191,635 | 0.90% | $7.0 million | 0.00% | +21,759 | 13F |
| D. E. Shaw & Co., Inc. | 188,452 | 0.89% | $6.8 million | 0.00% | new | 13F |
| Jane Street Group, LLC | 185,697 | 0.88% | $6.7 million | 0.00% | +90,277 | 13F |
| Lumbard & Kellner, LLC | 175,909 | 0.83% | $6.4 million | 1.93% | -2 | 13F |
| Cannell Capital LLC | 170,747 | 0.81% | $6.2 million | 4.32% | -171,238 | 13F |
| Norges Bank | 169,500 | 0.80% | $6.1 million | 0.00% | 13F | |
| Vanguard Fiduciary Trust Co. | 168,539 | 0.80% | $6.1 million | 0.00% | +3,824 | 13F |
| Informed Momentum Co LLC | 158,045 | 0.75% | $5.7 million | 0.51% | +109,422 | 13F |
| Prospect Capital Advisors, LLC | 157,200 | 0.74% | $5.7 million | 2.58% | new | 13F |
| Aristides Capital LLC | 145,410 | 0.69% | $5.3 million | 1.35% | -40,631 | 13F |
| Bank of America Corp. | 142,257 | 0.67% | $5.1 million | 0.00% | -2,110 | 13F |
| Prelude Capital Management, LLC | 137,572 | 0.65% | $5.0 million | 0.36% | -51,230 | 13F |
| Goldman Sachs Group Inc. | 132,583 | 0.63% | $4.8 million | 0.00% | -84,863 | 13F |
| Bank of New York Mellon Corp | 118,249 | 0.56% | $4.3 million | 0.00% | +6,994 | 13F |
| Two Sigma Investments, LP | 116,291 | 0.55% | $4.2 million | 0.00% | +9,898 | 13F |
| Wells Fargo & Company | 114,655 | 0.54% | $4.2 million | 0.00% | +105,096 | 13F |
| Wasatch Advisors LP | 92,742 | 0.44% | $3.4 million | 0.02% | new | 13F |
| Bridge City Capital, LLC | 88,132 | 0.42% | $3.2 million | 0.73% | +66,982 | 13F |
| Walleye Capital LLC | 86,249 | 0.41% | $3.1 million | 0.02% | +4,286 | 13F |
| Anchor Capital Advisors LLC | 81,238 | 0.38% | $2.9 million | 0.04% | +40,380 | 13F |
| Charles Schwab Investment Management Inc. | 77,032 | 0.36% | $2.8 million | 0.00% | +8,237 | 13F |
| Wellington Management Group LLP | 76,103 | 0.36% | $2.8 million | 0.00% | +5,979 | 13F |
| Diametric Capital, LP | 73,101 | 0.35% | $2.6 million | 0.28% | -83,825 | 13F |
| Numerai GP LLC | 70,114 | 0.33% | $2.5 million | 0.21% | +32,758 | 13F |
| UBS Group AG | 65,424 | 0.31% | $2.4 million | 0.00% | -103,534 | 13F |
| Squarepoint Ops LLC | 59,562 | 0.28% | $2.2 million | 0.00% | new | 13F |
| Boothbay Fund Management, LLC | 57,516 | 0.27% | $2.1 million | 0.04% | +1,911 | 13F |
| Barclays PLC | 56,181 | 0.27% | $2.0 million | 0.00% | +6,807 | 13F |
| HighTower Advisors, LLC | 52,907 | 0.25% | $1.9 million | 0.00% | +34,484 | 13F |
| Renaissance Technologies LLC | 52,300 | 0.25% | $1.9 million | 0.00% | -111,021 | 13F |
The 50 largest of the 164 funds that reported a position in ETON in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on ETON
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Puts | 36,400 | $1.3 million | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 28 July 2026 | 13G/A | BlackRock, Inc. and 1 other | 1.9 million | 6.9% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 October 2025 | 13G | The Vanguard Group and 1 other | 1.3 million | 5.0% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.