Eton Pharmaceuticals, Inc. (ETON) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

1,394,879Shares held by institutions

$31,482,419Value of institutional holdings

71.13%Institutional ownership %

42.53%Shares Changed QoQ

86No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Eton Pharmaceuticals, Inc. (NASDAQ:ETON) showed up in the 13F filings of 101 institutional investors as of December 2025.

These investors held 59.7% of outstanding shares in December 2025, down from 67.3% in September 2025.
Their total shares held in ETON decreased -6.61% quarter over quarter, and separately, investors owning Eton Pharmaceuticals increased 42.25% from a year ago.
Activity in ETON broke down as 48 buyers, 37 sellers, and 16 unchanged among 101 total holders.
In total, institutional investors held 16.04Mn shares in Eton Pharmaceuticals as of December 2025, down by 1.14Mn shares quarter on quarter, and up 2.86Mn shares year over year.
As of December 31, 2025, Opaleye Management Inc. held the largest stake in Eton Pharmaceuticals with 2.86Mn shares, accounting for 10.63% of total shares outstanding.
The biggest buyers of Eton Pharmaceuticals for the quarter ending December 2025 included OBERWEIS ASSET MANAGEMENT INC/ (238.94K), Aristides Capital LLC (155.28K), Woodline Partners LP (95.49K), Diametric Capital, LP (93.85K), CITADEL ADVISORS LLC (74.14K).
Top sellers of ETON stock for the quarter ending December 2025 included Jpmorgan Chase & Co (517.4K), Royal Bank Of Canada (478.18K), CANNELL CAPITAL LLC (238.49K), TWO SIGMA INVESTMENTS, LP (209.82K), TWO SIGMA ADVISERS, LP (154.2K).
Eton Pharmaceuticals's 10 largest shareholders as of December 2025 include Opaleye Management Inc. (2.86Mn), EcoR1 Capital, LLC (2.03Mn), BlackRock, Inc. (1.74Mn), VANGUARD GROUP INC (1.35Mn), Nantahala Capital Management, LLC (1.18Mn), GEODE CAPITAL MANAGEMENT, LLC (565.05K), State Street Corp (501.92K), Morgan Stanley (493.91K), Westside Investment Management, Inc. (470.94K), OBERWEIS ASSET MANAGEMENT INC/ (431.3K) per Business Quant data.

101 Institutional Holders

1,394,879 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	34,546	2.03%	$0.00
Opaleye Management Inc.	31 Dec, 2025	0	0.00%	$0.00
Diametric Capital, LP	31 Dec, 2025	93,846	94.50%	$0.00
Barclays Plc	31 Dec, 2025	14,642	39.78%	$0.00
EcoR1 Capital, LLC	31 Dec, 2025	0	0.00%	$0.00
UBS Group AG	31 Dec, 2025	-93,687	-42.52%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	4,553	0.34%	$0.00
Woodline Partners LP	31 Dec, 2025	95,487	0.00%	$0.00
Nantahala Capital Management, LLC	31 Dec, 2025	0	0.00%	$0.00
Nuveen, LLC	31 Dec, 2025	0	0.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	-8,979	-1.56%	$0.00
Russell Investments Group, Ltd.	31 Dec, 2025	-5,171	-9.42%	$0.00
State Street Corp	31 Dec, 2025	63,480	14.48%	$0.00
XTX Topco Ltd	31 Dec, 2025	32,527	0.00%	$0.00
Morgan Stanley	31 Dec, 2025	-92,132	-15.72%	$0.00
Aquatic Capital Management LLC	31 Dec, 2025	-13,530	-37.24%	$0.00
Westside Investment Management, Inc.	31 Dec, 2025	-1,600	-0.34%	$0.00
JUNCTURE WEALTH STRATEGIES, LLC	31 Dec, 2025	2,028	11.95%	$0.00
OBERWEIS ASSET MANAGEMENT INC/	31 Dec, 2025	238,940	124.22%	$0.00
Bridge City Capital, LLC	31 Dec, 2025	1,927	11.56%	$0.00

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