ETON US Equity

Eton Pharmaceuticals, Inc.

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Health Care · Pharmaceutical Preparations · CIK 1710340 · FYE 1231

$48.13

+1.47 (+3.15%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding ETON · 2026-Q1 methodology → sources →

116 holders

% of shares outstanding held

64.9%

Shares held (13F)

17,784,221

Reporting holders

116

Top holders

largest 100 of 116 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Opaleye Management Inc.	2,860,0002.9M	$71M	10.44%	—
2	EcoR1 Capital, LLC	2,171,9382.2M	$54M	7.93%	ADD 7%
3	BlackRock, Inc.	1,717,2861.7M	$42M	6.27%	—
4	Nantahala Capital Management, LLC	1,175,9511.2M	$29M	4.29%	—
5	VANGUARD CAPITAL MANAGEMENT LLC	994,089994,089	$25M	3.63%	NEW†
6	GEODE CAPITAL MANAGEMENT, LLC	577,666577,666	$14M	2.11%	ADD 2%
7	STATE STREET CORP	530,215530,215	$13M	1.94%	ADD 6%
8	National Philanthropic Trust	492,112492,112	$12M	1.80%	—
9	MORGAN STANLEY	477,957477,957	$12M	1.74%	TRIM -3%
10	Westside Investment Management, Inc.	467,915467,915	$12M	1.71%	—
11	OBERWEIS ASSET MANAGEMENT INC/	439,300439,300	$11M	1.60%	—
12	THOMPSON SIEGEL & WALMSLEY LLC	406,089406,089	$10M	1.48%	—
13	Pillsbury Lake Capital LLC	364,954364,954	$9M	1.33%	NEW
14	CANNELL CAPITAL LLC	341,985341,985	$8M	1.25%	ADD 58%
15	BNP PARIBAS FINANCIAL MARKETS	302,108302,108	$7M	1.10%	ADD 9%
16	NORTHERN TRUST CORP	237,832237,832	$6M	0.87%	ADD 3%
17	GOLDMAN SACHS GROUP INC	217,446217,446	$5M	0.79%	ADD 11%
18	PRELUDE CAPITAL MANAGEMENT, LLC	188,802188,802	$5M	0.69%	ADD 317%
19	Aristides Capital LLC	186,041186,041	$5M	0.68%	ADD 15%
20	Panoramic Capital, LLC	185,000185,000	$5M	0.68%	NEW
21	Lumbard & Kellner, LLC	175,911175,911	$4M	0.64%	—
22	Woodline Partners LP	170,699170,699	$4M	0.62%	ADD 79%
23	UBS Group AG	168,958168,958	$4M	0.62%	ADD 33%
24	Soleus Capital Management, L.P.	166,381166,381	$4M	0.61%	NEW
25	VANGUARD FIDUCIARY TRUST CO	164,715164,715	$4M	0.60%	NEW
26	RENAISSANCE TECHNOLOGIES LLC	163,321163,321	$4M	0.60%	TRIM -21%
27	Diametric Capital, LP	156,926156,926	$4M	0.57%	TRIM -19%
28	JPMORGAN CHASE & CO	169,876169,876	$4M	0.62%	TRIM -8%
29	VANGUARD PORTFOLIO MANAGEMENT LLC	151,748151,748	$4M	0.55%	NEW
30	BANK OF AMERICA CORP /DE/	144,367144,367	$4M	0.53%	ADD 38%
31	Bank of New York Mellon Corp	111,255111,255	$3M	0.41%	TRIM -13%
32	CITADEL ADVISORS LLC	107,815107,815	$3M	0.39%	ADD 45%
33	TWO SIGMA INVESTMENTS, LP	106,393106,393	$3M	0.39%	ADD 39%
34	JANE STREET GROUP, LLC	95,42095,420	$2M	0.35%	ADD 64%
35	MARSHALL WACE, LLP	82,72182,721	$2M	0.30%	NEW
36	Walleye Capital LLC	81,96381,963	$2M	0.30%	NEW
37	WELLINGTON MANAGEMENT GROUP LLP	70,12470,124	$2M	0.26%	TRIM -14%
38	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	68,79568,795	$2M	0.25%	TRIM -11%
39	SEI INVESTMENTS CO	58,03458,034	$1M	0.21%	NEW
40	Nuveen, LLC	57,95057,950	$1M	0.21%	—
41	BOOTHBAY FUND MANAGEMENT, LLC	55,60555,605	$1M	0.20%	NEW
42	XTX Topco Ltd	51,77251,772	$1M	0.19%	ADD 59%
43	BARCLAYS PLC	49,37449,374	$1M	0.18%	TRIM -4%
44	Informed Momentum Co LLC	48,62348,623	$1M	0.18%	NEW
45	Connor, Clark & Lunn Investment Management Ltd.	42,69342,693	$1M	0.16%	TRIM -44%
46	ANCHOR CAPITAL ADVISORS LLC	40,85840,858	$1M	0.15%	—
47	Manatuck Hill Partners, LLC	40,00040,000	$987,200	0.15%	NEW
48	Numerai GP LLC	37,35637,356	$921,946	0.14%	NEW
49	SUSQUEHANNA INTERNATIONAL GROUP, LLP	34,08434,084	$841,193	0.12%	NEW
50	BLAIR WILLIAM & CO/IL	32,40032,400	$799,632	0.12%	—
51	RHUMBLINE ADVISERS	30,72630,726	$758,310	0.11%	—
52	POLEN CAPITAL MANAGEMENT LLCtracked	30,13830,138	$743,806	0.11%	NEW
53	Guilbault Capital LLC	23,22523,225	$573,193	0.08%	—
54	Invesco Ltd.	22,87422,874	$564,531	0.08%	ADD 16%
55	Brevan Howard Capital Management LP	22,50622,506	$555,448	0.08%	NEW
56	Bridge City Capital, LLC	21,15021,150	$521,982	0.08%	ADD 14%
57	DEUTSCHE BANK AG\	21,13621,136	$521,636	0.08%	ADD 16%
58	ESSEX INVESTMENT MANAGEMENT CO LLC	20,18220,182	$498,092	0.07%	—
59	JUNCTURE WEALTH STRATEGIES, LLC	19,18119,181	$473,387	0.07%	—
60	STATE OF WISCONSIN INVESTMENT BOARD	18,64418,644	$460,134	0.07%	TRIM -24%
61	HighTower Advisors, LLC	18,42318,423	$454,680	0.07%	NEW
62	PRICE T ROWE ASSOCIATES INC /MD/	17,65217,652	$436,000	0.06%	ADD 15%
63	CHICAGO TRUST Co NA	16,70016,700	$412,156	0.06%	—
64	MetLife Investment Management, LLC	15,53715,537	$383,453	0.06%	—
65	MILLENNIUM MANAGEMENT LLC	14,93914,939	$368,695	0.05%	TRIM -81%
66	PDT Partners, LLC	14,89114,891	$367,510	0.05%	—
67	BANK OF NOVA SCOTIA	15,00015,000	$365,289	0.05%	NEW
68	Voleon Capital Management LP	13,29013,290	$327,997	0.05%	TRIM -15%
69	RAYMOND JAMES FINANCIAL INC	12,25012,250	$302,330	0.04%	—
70	Aquatic Capital Management LLC	12,06112,061	$297,665	0.04%	TRIM -47%
71	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	12,03812,038	$297,098	0.04%	—
72	AMERICAN CENTURY COMPANIES INC	11,92611,926	$294,334	0.04%	NEW
73	Quantum Private Wealth, LLC	11,50011,500	$283,820	0.04%	—
74	ENVESTNET ASSET MANAGEMENT INC	10,73910,739	$265,039	0.04%	—
75	LOS ANGELES CAPITAL MANAGEMENT LLC	10,26910,269	$253,439	0.04%	TRIM -30%
76	WELLS FARGO & COMPANY/MN	9,5599,559	$235,917	0.03%	TRIM -66%
77	State of Wyoming	9,4989,498	$234,411	0.03%	ADD 16%
78	Vanguard Global Advisers, LLC	8,9918,991	$221,898	0.03%	NEW
79	Granite Investment Partners, LLC	8,4798,479	$209,262	0.03%	NEW
80	Jain Global LLC	8,2878,287	$204,523	0.03%	NEW
81	NEW YORK STATE COMMON RETIREMENT FUND	8,1008,100	$199,908	0.03%	—
82	Quantbot Technologies LP	7,7877,787	$192,183	0.03%	TRIM -17%
83	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	7,5007,500	$185,100	0.03%	TRIM -25%
84	Police & Firemen's Retirement System of New Jersey	7,2097,209	$177,918	0.03%	—
85	State of Alaska, Department of Revenue	6,9436,943	$171,000	0.03%	—
86	China Universal Asset Management Co., Ltd.	4,7594,759	$117,452	0.02%	ADD 9%
87	Russell Investments Group, Ltd.	2,6702,670	$65,895	0.01%	TRIM -95%
88	CITIGROUP INC	2,5482,548	$62,884	0.01%	ADD 76%
89	Legal & General Group Plc	2,3302,330	$57,481	0.01%	TRIM -15%
90	Ameritas Investment Partners, Inc.	2,1672,167	$53,482	0.01%	—
91	FMR LLC	1,5191,519	$37,480	0.01%	TRIM -51%
92	Mirae Asset Global Investments Co., Ltd.	1,3991,399	$34,527	0.01%	ADD 7%
93	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	1,3881,388	$34,256	0.01%	TRIM -12%
94	Truvestments Capital LLC	1,1831,183	$29,196	0.00%	—
95	Tower Research Capital LLC (TRC)	1,1561,156	$28,530	0.00%	TRIM -61%
96	GF FUND MANAGEMENT CO. LTD.	597597	$14,734	0.00%	ADD 13%
97	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	368368	$9,082	0.00%	NEW
98	JONES FINANCIAL COMPANIES LLLP	350350	$8,134	0.00%	ADD 58%
99	Parallel Advisors, LLC	303303	$7,478	0.00%	NEW
100	SBI Securities Co., Ltd.	263263	$6,491	0.00%	ADD 2530%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Opaleye Management Inc.

2.9M

$71M

EcoR1 Capital, LLC

1.8M

1.9M

2.0M

2.2M

$54M

BlackRock, Inc.

318K

345K

1.5M

1.7M

$42M

Nantahala Capital Management, LLC

1.1M

1.2M

$29M

VANGUARD CAPITAL MANAGEMENT LLC

—

994K

$25M

GEODE CAPITAL MANAGEMENT, LLC

269K

298K

593K

574K

565K

578K

$14M

STATE STREET CORP

105K

114K

323K

438K

502K

530K

$13M

National Philanthropic Trust

492K

$12M

MORGAN STANLEY

13K

147K

510K

586K

494K

478K

$12M

Westside Investment Management, Inc.

575K

494K

473K

471K

468K

$12M

OBERWEIS ASSET MANAGEMENT INC/

—

192K

431K

439K

$11M

THOMPSON SIEGEL & WALMSLEY LLC

128K

190K

381K

419K

409K

406K

$10M

Pillsbury Lake Capital LLC

—

365K

$9M

CANNELL CAPITAL LLC

381K

691K

388K

455K

217K

342K

$8M

BNP PARIBAS FINANCIAL MARKETS

350

39K

88K

230K

277K

302K

$7M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	116	17,784,221	64.9%	$439M
2025-Q4	104	16,407,019	59.9%	$277M
2025-Q3	103	18,542,113	67.7%	$406M
2025-Q2	87	17,077,988	62.3%	$243M
2025-Q1	86	14,615,226	53.4%	$190M
2024-Q4	71	13,627,508	49.7%	$182M
2024-Q3	48	10,000,749	36.5%	$60M
2024-Q2	45	9,861,153

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · ETON

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
EcoR1 Capital, LLC	7.7%	QII	2024-12-31	SEC →
BlackRock, Inc.	6.9%	QII	2026-06-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding ETON · 2026-Q1 methodology → sources →

116 holders

% of shares outstanding held

64.9%

Shares held (13F)

17,784,221

Reporting holders

116

Top holders

largest 100 of 116 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Opaleye Management Inc.	2,860,0002.9M	$71M	10.44%	—
2	EcoR1 Capital, LLC	2,171,9382.2M	$54M	7.93%	ADD 7%
3	BlackRock, Inc.	1,717,2861.7M	$42M	6.27%	—
4	Nantahala Capital Management, LLC	1,175,9511.2M	$29M	4.29%	—
5	VANGUARD CAPITAL MANAGEMENT LLC	994,089994,089	$25M	3.63%	NEW†
6	GEODE CAPITAL MANAGEMENT, LLC	577,666577,666	$14M	2.11%	ADD 2%
7	STATE STREET CORP	530,215530,215	$13M	1.94%	ADD 6%
8	National Philanthropic Trust	492,112492,112	$12M	1.80%	—
9	MORGAN STANLEY	477,957477,957	$12M	1.74%	TRIM -3%
10	Westside Investment Management, Inc.	467,915467,915	$12M	1.71%	—
11	OBERWEIS ASSET MANAGEMENT INC/	439,300439,300	$11M	1.60%	—
12	THOMPSON SIEGEL & WALMSLEY LLC	406,089406,089	$10M	1.48%	—
13	Pillsbury Lake Capital LLC	364,954364,954	$9M	1.33%	NEW
14	CANNELL CAPITAL LLC	341,985341,985	$8M	1.25%	ADD 58%
15	BNP PARIBAS FINANCIAL MARKETS	302,108302,108	$7M	1.10%	ADD 9%
16	NORTHERN TRUST CORP	237,832237,832	$6M	0.87%	ADD 3%
17	GOLDMAN SACHS GROUP INC	217,446217,446	$5M	0.79%	ADD 11%
18	PRELUDE CAPITAL MANAGEMENT, LLC	188,802188,802	$5M	0.69%	ADD 317%
19	Aristides Capital LLC	186,041186,041	$5M	0.68%	ADD 15%
20	Panoramic Capital, LLC	185,000185,000	$5M	0.68%	NEW
21	Lumbard & Kellner, LLC	175,911175,911	$4M	0.64%	—
22	Woodline Partners LP	170,699170,699	$4M	0.62%	ADD 79%
23	UBS Group AG	168,958168,958	$4M	0.62%	ADD 33%
24	Soleus Capital Management, L.P.	166,381166,381	$4M	0.61%	NEW
25	VANGUARD FIDUCIARY TRUST CO	164,715164,715	$4M	0.60%	NEW
26	RENAISSANCE TECHNOLOGIES LLC	163,321163,321	$4M	0.60%	TRIM -21%
27	Diametric Capital, LP	156,926156,926	$4M	0.57%	TRIM -19%
28	JPMORGAN CHASE & CO	169,876169,876	$4M	0.62%	TRIM -8%
29	VANGUARD PORTFOLIO MANAGEMENT LLC	151,748151,748	$4M	0.55%	NEW
30	BANK OF AMERICA CORP /DE/	144,367144,367	$4M	0.53%	ADD 38%
31	Bank of New York Mellon Corp	111,255111,255	$3M	0.41%	TRIM -13%
32	CITADEL ADVISORS LLC	107,815107,815	$3M	0.39%	ADD 45%
33	TWO SIGMA INVESTMENTS, LP	106,393106,393	$3M	0.39%	ADD 39%
34	JANE STREET GROUP, LLC	95,42095,420	$2M	0.35%	ADD 64%
35	MARSHALL WACE, LLP	82,72182,721	$2M	0.30%	NEW
36	Walleye Capital LLC	81,96381,963	$2M	0.30%	NEW
37	WELLINGTON MANAGEMENT GROUP LLP	70,12470,124	$2M	0.26%	TRIM -14%
38	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	68,79568,795	$2M	0.25%	TRIM -11%
39	SEI INVESTMENTS CO	58,03458,034	$1M	0.21%	NEW
40	Nuveen, LLC	57,95057,950	$1M	0.21%	—
41	BOOTHBAY FUND MANAGEMENT, LLC	55,60555,605	$1M	0.20%	NEW
42	XTX Topco Ltd	51,77251,772	$1M	0.19%	ADD 59%
43	BARCLAYS PLC	49,37449,374	$1M	0.18%	TRIM -4%
44	Informed Momentum Co LLC	48,62348,623	$1M	0.18%	NEW
45	Connor, Clark & Lunn Investment Management Ltd.	42,69342,693	$1M	0.16%	TRIM -44%
46	ANCHOR CAPITAL ADVISORS LLC	40,85840,858	$1M	0.15%	—
47	Manatuck Hill Partners, LLC	40,00040,000	$987,200	0.15%	NEW
48	Numerai GP LLC	37,35637,356	$921,946	0.14%	NEW
49	SUSQUEHANNA INTERNATIONAL GROUP, LLP	34,08434,084	$841,193	0.12%	NEW
50	BLAIR WILLIAM & CO/IL	32,40032,400	$799,632	0.12%	—
51	RHUMBLINE ADVISERS	30,72630,726	$758,310	0.11%	—
52	POLEN CAPITAL MANAGEMENT LLCtracked	30,13830,138	$743,806	0.11%	NEW
53	Guilbault Capital LLC	23,22523,225	$573,193	0.08%	—
54	Invesco Ltd.	22,87422,874	$564,531	0.08%	ADD 16%
55	Brevan Howard Capital Management LP	22,50622,506	$555,448	0.08%	NEW
56	Bridge City Capital, LLC	21,15021,150	$521,982	0.08%	ADD 14%
57	DEUTSCHE BANK AG\	21,13621,136	$521,636	0.08%	ADD 16%
58	ESSEX INVESTMENT MANAGEMENT CO LLC	20,18220,182	$498,092	0.07%	—
59	JUNCTURE WEALTH STRATEGIES, LLC	19,18119,181	$473,387	0.07%	—
60	STATE OF WISCONSIN INVESTMENT BOARD	18,64418,644	$460,134	0.07%	TRIM -24%
61	HighTower Advisors, LLC	18,42318,423	$454,680	0.07%	NEW
62	PRICE T ROWE ASSOCIATES INC /MD/	17,65217,652	$436,000	0.06%	ADD 15%
63	CHICAGO TRUST Co NA	16,70016,700	$412,156	0.06%	—
64	MetLife Investment Management, LLC	15,53715,537	$383,453	0.06%	—
65	MILLENNIUM MANAGEMENT LLC	14,93914,939	$368,695	0.05%	TRIM -81%
66	PDT Partners, LLC	14,89114,891	$367,510	0.05%	—
67	BANK OF NOVA SCOTIA	15,00015,000	$365,289	0.05%	NEW
68	Voleon Capital Management LP	13,29013,290	$327,997	0.05%	TRIM -15%
69	RAYMOND JAMES FINANCIAL INC	12,25012,250	$302,330	0.04%	—
70	Aquatic Capital Management LLC	12,06112,061	$297,665	0.04%	TRIM -47%
71	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	12,03812,038	$297,098	0.04%	—
72	AMERICAN CENTURY COMPANIES INC	11,92611,926	$294,334	0.04%	NEW
73	Quantum Private Wealth, LLC	11,50011,500	$283,820	0.04%	—
74	ENVESTNET ASSET MANAGEMENT INC	10,73910,739	$265,039	0.04%	—
75	LOS ANGELES CAPITAL MANAGEMENT LLC	10,26910,269	$253,439	0.04%	TRIM -30%
76	WELLS FARGO & COMPANY/MN	9,5599,559	$235,917	0.03%	TRIM -66%
77	State of Wyoming	9,4989,498	$234,411	0.03%	ADD 16%
78	Vanguard Global Advisers, LLC	8,9918,991	$221,898	0.03%	NEW
79	Granite Investment Partners, LLC	8,4798,479	$209,262	0.03%	NEW
80	Jain Global LLC	8,2878,287	$204,523	0.03%	NEW
81	NEW YORK STATE COMMON RETIREMENT FUND	8,1008,100	$199,908	0.03%	—
82	Quantbot Technologies LP	7,7877,787	$192,183	0.03%	TRIM -17%
83	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	7,5007,500	$185,100	0.03%	TRIM -25%
84	Police & Firemen's Retirement System of New Jersey	7,2097,209	$177,918	0.03%	—
85	State of Alaska, Department of Revenue	6,9436,943	$171,000	0.03%	—
86	China Universal Asset Management Co., Ltd.	4,7594,759	$117,452	0.02%	ADD 9%
87	Russell Investments Group, Ltd.	2,6702,670	$65,895	0.01%	TRIM -95%
88	CITIGROUP INC	2,5482,548	$62,884	0.01%	ADD 76%
89	Legal & General Group Plc	2,3302,330	$57,481	0.01%	TRIM -15%
90	Ameritas Investment Partners, Inc.	2,1672,167	$53,482	0.01%	—
91	FMR LLC	1,5191,519	$37,480	0.01%	TRIM -51%
92	Mirae Asset Global Investments Co., Ltd.	1,3991,399	$34,527	0.01%	ADD 7%
93	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	1,3881,388	$34,256	0.01%	TRIM -12%
94	Truvestments Capital LLC	1,1831,183	$29,196	0.00%	—
95	Tower Research Capital LLC (TRC)	1,1561,156	$28,530	0.00%	TRIM -61%
96	GF FUND MANAGEMENT CO. LTD.	597597	$14,734	0.00%	ADD 13%
97	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	368368	$9,082	0.00%	NEW
98	JONES FINANCIAL COMPANIES LLLP	350350	$8,134	0.00%	ADD 58%
99	Parallel Advisors, LLC	303303	$7,478	0.00%	NEW
100	SBI Securities Co., Ltd.	263263	$6,491	0.00%	ADD 2530%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Opaleye Management Inc.

2.9M

$71M

EcoR1 Capital, LLC

1.8M

1.9M

2.0M

2.2M

$54M

BlackRock, Inc.

318K

345K

1.5M

1.7M

$42M

Nantahala Capital Management, LLC

1.1M

1.2M

$29M

VANGUARD CAPITAL MANAGEMENT LLC

—

994K

$25M

GEODE CAPITAL MANAGEMENT, LLC

269K

298K

593K

574K

565K

578K

$14M

STATE STREET CORP

105K

114K

323K

438K

502K

530K

$13M

National Philanthropic Trust

492K

$12M

MORGAN STANLEY

13K

147K

510K

586K

494K

478K

$12M

Westside Investment Management, Inc.

575K

494K

473K

471K

468K

$12M

OBERWEIS ASSET MANAGEMENT INC/

—

192K

431K

439K

$11M

THOMPSON SIEGEL & WALMSLEY LLC

128K

190K

381K

419K

409K

406K

$10M

Pillsbury Lake Capital LLC

—

365K

$9M

CANNELL CAPITAL LLC

381K

691K

388K

455K

217K

342K

$8M

BNP PARIBAS FINANCIAL MARKETS

350

39K

88K

230K

277K

302K

$7M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	116	17,784,221	64.9%	$439M
2025-Q4	104	16,407,019	59.9%	$277M
2025-Q3	103	18,542,113	67.7%	$406M
2025-Q2	87	17,077,988	62.3%	$243M
2025-Q1	86	14,615,226	53.4%	$190M
2024-Q4	71	13,627,508	49.7%	$182M
2024-Q3	48	10,000,749	36.5%	$60M
2024-Q2	45	9,861,153

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · ETON

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
EcoR1 Capital, LLC	7.7%	QII	2024-12-31	SEC →
BlackRock, Inc.	6.9%	QII	2026-06-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

ETON US Equity☆

Institutional ownership· 13F filers holding ETON · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · ETON

Institutional ownership· 13F filers holding ETON · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · ETON

ETON US Equity