Eton Pharmaceuticals ETON Institutional Ownership

NASDAQ ETON

$51.49 -7.70 (-13.01%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

165 Institutions

Increased 112 67.9%

Unchanged 17 10.3%

Reduced 36 21.8%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

72.47%

▲+6.38 pp QoQ

Shares Held by Institutions

20.03Mn

of 27.64Mn outstanding

▲+14.06% QoQ

Shares Outstanding

27.64Mn

7.61Mn held outside 13F filers

Institutional Investors

165

filed 13F for Jun 2026

▲+50 vs prior quarter

Net Shares Added (QoQ)

+2.47Mn

accumulated since last quarter

Value of Holdings

$1.03Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Eton Pharmaceuticals, Inc. (NASDAQ:ETON) appears in 165 institutional 13F filings for the quarter ending June 2026.

They owned 72.5% of outstanding stock in June 2026, up from 66.1% the prior quarter.
Their total shares held in ETON increased 14.06% from the prior quarter, while the number of investors in Eton Pharmaceuticals increased 89.66% year over year.
Of these 165 funds, 112 grew their exposure to Eton Pharmaceuticals, 36 cut back, and 17 maintained positions.
In total, institutional investors held 20.03Mn shares in Eton Pharmaceuticals as of June 2026, up by 2.47Mn shares quarter on quarter, and up 3.47Mn shares year over year.
As of June 30, 2026, the biggest holder of Eton Pharmaceuticals is Opaleye Management Inc. at 2.86Mn shares, representing 10.35% of shares outstanding.
The biggest buyers of Eton Pharmaceuticals for the quarter ending June 2026 included Nuveen, LLC (317.76K), Morgan Stanley (290.02K), D. E. Shaw & Co., Inc. (188.45K), BlackRock, Inc. (178.55K), State Street Corp (171.57K).
The largest sales of ETON for the quarter ending June 2026 came from CANNELL CAPITAL LLC (171.24K), RENAISSANCE TECHNOLOGIES LLC (111.02K), THOMPSON SIEGEL & WALMSLEY LLC (108.86K), UBS Group AG (103.53K), Goldman Sachs Group Inc (84.86K).
Business Quant data shows the 10 biggest positions in Eton Pharmaceuticals as of June 2026 are held by Opaleye Management Inc. (2.86Mn), EcoR1 Capital, LLC (2.17Mn), BlackRock, Inc. (1.9Mn), Nantahala Capital Management, LLC (1.18Mn), VANGUARD CAPITAL MANAGEMENT LLC (976.57K), Morgan Stanley (767.97K), State Street Corp (701.79K), GEODE CAPITAL MANAGEMENT, LLC (652.3K), OBERWEIS ASSET MANAGEMENT INC/ (501.6K), National Philanthropic Trust (492.11K).

Form 13F Holdings

165 Institutional Holders

Report period 30 Jun, 2026

Total shares held 20.03Mn

Of outstanding 72.47%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Opaleye Management Inc.	0001595855	2,860,000	10.35%	0	0.00%	$103.53Mn
2	EcoR1 Capital, LLC	0001587114	2,171,938	7.86%	0	0.00%	$78.62Mn
3	BlackRock, Inc.	0002012383	1,895,833	6.86%	▲178,547	+10.40%	$68.63Mn
4	Nantahala Capital Management, LLC	0001472322	1,175,951	4.25%	0	0.00%	$42.57Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	976,570	3.53%	▼17,519	-1.76%	$35.35Mn
6	Morgan Stanley	0000895421	767,972	2.78%	▲290,015	+60.68%	$27.80Mn
7	State Street Corp	0000093751	701,786	2.54%	▲171,571	+32.36%	$25.40Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	652,303	2.36%	▲74,637	+12.92%	$23.62Mn
9	OBERWEIS ASSET MANAGEMENT INC/	0000937886	501,600	1.81%	▲62,300	+14.18%	$18.16Mn
10	National Philanthropic Trust	0001785342	492,112	1.78%	0	0.00%	$17.81Mn
11	Westside Investment Management, Inc.	0001538383	431,160	1.56%	▼36,755	-7.86%	$15.61Mn
12	Pillsbury Lake Capital LLC	0002111915	387,157	1.40%	▲22,203	+6.08%	$14.02Mn
13	Nuveen, LLC	0001871926	375,707	1.36%	▲317,757	+548.33%	$13.60Mn
14	BNP PARIBAS FINANCIAL MARKETS	0001166588	322,466	1.17%	▲20,358	+6.74%	$11.67Mn
15	Woodline Partners LP	0001784547	310,879	1.12%	▲140,180	+82.12%	$11.25Mn
16	THOMPSON SIEGEL & WALMSLEY LLC	0001008322	297,232	1.08%	▼108,857	-26.81%	$10.76K
17	Northern Trust Corp	0000073124	255,849	0.93%	▲18,017	+7.58%	$9.26Mn
18	MARSHALL WACE, LLP	0001318757	249,182	0.90%	▲166,461	+201.23%	$9.02Mn
19	Panoramic Capital, LLC	0001950490	208,192	0.75%	▲23,192	+12.54%	$7.54Mn
20	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	194,591	0.70%	▲42,843	+28.23%	$7.04Mn

Showing 1 to 20 of 165 holders