Eton Pharmaceuticals ETON Institutional Ownership

NASDAQ ETON

$58.83 -0.51 (-0.87%)

At close: Sep 9, 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

$1.17Bn

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) showed up in the 13F filings of 165 institutional investors as of June 2026.

These investors collectively held 72.5% of Eton Pharmaceuticals's outstanding shares in June 2026, up from 66.1% in March 2026.
Their total shares held in ETON increased 14.06% quarter over quarter, and separately, investors owning Eton Pharmaceuticals increased 89.66% from a year ago.
Of these 165 funds, 112 grew their exposure to Eton Pharmaceuticals, 36 cut back, and 17 maintained positions.
The aggregate institutional position in Eton Pharmaceuticals amounted to 20.03Mn shares as of June 2026, up by 2.47Mn shares quarter on quarter, and up 410.22K shares year over year.
Opaleye Management Inc. holds the largest position in ETON at 2.86Mn shares as of June 30, 2026, or 10.35% of shares outstanding.
Top purchasers of ETON stock 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).
Per Business Quant, the top 10 investors in ETON for the quarter ending June 2026 include 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