Eton Pharmaceuticals ETON Institutional Ownership

NASDAQ ETON

$49.30 -0.89 (-1.77%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

164 Institutions

Increased 111 67.7%

Unchanged 17 10.4%

Reduced 36 22.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

70.54%

▲+5.54 pp QoQ

Shares Held by Institutions

19.96Mn

of 28.29Mn outstanding

▲+12.21% QoQ

Shares Outstanding

28.29Mn

8.33Mn held outside 13F filers

Institutional Investors

164

filed 13F for Jun 2026

▲+49 vs prior quarter

Net Shares Added (QoQ)

+2.17Mn

accumulated since last quarter

Value of Holdings

$1.00Bn

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

Updated Oct 11, 2026

Eton Pharmaceuticals, Inc. (NASDAQ:ETON) counted 164 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 70.54% of Eton Pharmaceuticals' outstanding shares at the end of Q2 2026, up from 65.00% in Q1 2026.
Total holdings of Eton Pharmaceuticals shares rose 12.21% from Q1 2026, and the number of holders rose 90.70% from Q2 2025.
Among the 164 holders of Eton Pharmaceuticals, 111 added to their positions, 36 reduced their stakes and 17 left their positions unchanged.
Altogether, institutional holders owned 19.96Mn ETON shares at the end of Q2 2026, up 2.17Mn from the prior quarter and up 3.39Mn from a year earlier.
As of June 30, 2026, the biggest holder of Eton Pharmaceuticals was Opaleye Management Inc. with 2.86Mn shares, or 10.11% of shares outstanding.
Among holders that already owned Eton Pharmaceuticals, the biggest buyers in Q2 2026 were Nuveen, LLC (+317.76K shares), Morgan Stanley (+290.01K shares), BlackRock, Inc. (+178.55K shares), State Street Corp (+171.57K shares) and Marshall Wace, LLP (+166.46K shares).
The biggest cuts to ETON positions during Q2 2026 came from Cannell Capital LLC (-171.24K shares), Renaissance Technologies LLC (-111.02K shares), Thompson Siegel & Walmsley LLC (-108.86K shares), UBS Group AG (-103.53K shares) and Goldman Sachs Group Inc (-84.86K shares).
Per Business Quant data, the 10 largest holders of Eton Pharmaceuticals at the end of Q2 2026 were Opaleye Management Inc. (2.86Mn shares), EcoR1 Capital, LLC (2.17Mn shares), BlackRock, Inc. (1.9Mn shares), Nantahala Capital Management, LLC (1.18Mn shares), Vanguard Capital Management LLC (976.57K shares), Morgan Stanley (767.97K shares), State Street Corp (701.79K shares), Geode Capital Management, LLC (652.3K shares), Oberweis Asset Management Inc (501.6K shares) and National Philanthropic Trust (492.11K shares).

Form 13F Holdings

164 Institutional Holders

Report period 30 Jun, 2026

Total shares held 19.96Mn

Of outstanding 70.54%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Opaleye Management Inc.	0001595855	2,860,000	10.11%	0	0.00%	$103.53Mn
2	EcoR1 Capital, LLC	0001587114	2,171,938	7.68%	0	0.00%	$78.62Mn
3	BlackRock, Inc.	0002012383	1,895,833	6.70%	▲178,547	+10.40%	$68.63Mn
4	Nantahala Capital Management, LLC	0001472322	1,175,951	4.16%	0	0.00%	$42.57Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	976,570	3.45%	▼17,519	-1.76%	$35.35Mn
6	Morgan Stanley	0000895421	767,972	2.71%	▲290,015	+60.68%	$27.80Mn
7	State Street Corp	0000093751	701,786	2.48%	▲171,571	+32.36%	$25.40Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	652,303	2.31%	▲74,637	+12.92%	$23.62Mn
9	OBERWEIS ASSET MANAGEMENT INC/	0000937886	501,600	1.77%	▲62,300	+14.18%	$18.16Mn
10	National Philanthropic Trust	0001785342	492,112	1.74%	0	0.00%	$17.81Mn
11	Westside Investment Management, Inc.	0001538383	431,160	1.52%	▼36,755	-7.86%	$15.61Mn
12	Pillsbury Lake Capital LLC	0002111915	387,157	1.37%	▲22,203	+6.08%	$14.02Mn
13	Nuveen, LLC	0001871926	375,707	1.33%	▲317,757	+548.33%	$13.60Mn
14	BNP PARIBAS FINANCIAL MARKETS	0001166588	322,466	1.14%	▲20,358	+6.74%	$11.67Mn
15	Woodline Partners LP	0001784547	310,879	1.10%	▲140,180	+82.12%	$11.25Mn
16	THOMPSON SIEGEL & WALMSLEY LLC	0001008322	297,232	1.05%	▼108,857	-26.81%	$10.76K
17	Northern Trust Corp	0000073124	255,849	0.90%	▲18,017	+7.58%	$9.26Mn
18	MARSHALL WACE, LLP	0001318757	249,182	0.88%	▲166,461	+201.23%	$9.02Mn
19	Panoramic Capital, LLC	0001950490	208,192	0.74%	▲23,192	+12.54%	$7.54Mn
20	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	194,591	0.69%	▲42,843	+28.23%	$7.04Mn

Showing 1 to 20 of 164 holders