ATOS — Atossa Therapeutics Inc Institutional Holders · Q2 2026

Name: Who Owns ATOS? 36 Institutions Hold $2.62M (Q2 2026)
Creator: ko.io

Who owns Atossa Therapeutics Inc (ATOS)? 36 institutions reported holding $2.62M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Vanguard Group Inc ($805,619), Ameriprise Financial Inc ($498,392), BlackRock, Inc. ($317,211).

Rank	Institution	Value	Shares	Change
1	VANGUARD GROUP INC	$805,619	417,419	Added
2	AMERIPRISE FINANCIAL INC	$498,392	258,234	Added
3	BlackRock, Inc.	$317,211	164,358	Added
4	RENAISSANCE TECHNOLOGIES LLC	$254,843	132,043	Added
5	GEODE CAPITAL MANAGEMENT, LLC	$178,343	92,382	Trimmed
6	UBS Group AG	$159,456	82,620	Trimmed
7	JANE STREET GROUP, LLC	$109,242	56,602	New
8	MILLENNIUM MANAGEMENT LLC	$89,760	46,508	Trimmed
9	STATE STREET CORP	$76,739	39,761	Hold
10	SUSQUEHANNA INTERNATIONAL GROUP, LLP	$51,867	26,874	Trimmed
11	NORTHERN TRUST CORP	$39,081	20,249	Added
12	MORGAN STANLEY	$23,825	12,345	Trimmed
13	Royal Bank of Canada	$4,000	1,994	Added
14	JONES FINANCIAL COMPANIES LLLP	$3,875	2,061	Hold
15	MCF Advisors LLC	$2,058	1,066	New
16	OSAIC HOLDINGS, INC.	$1,131	587	Hold
17	JPMORGAN CHASE & CO	$772	390	Added
18	Rockefeller Capital Management L.P.	$643	333	Trimmed
19	WELLS FARGO & COMPANY/MN	$440	228	Trimmed
20	SBI Securities Co., Ltd.	$286	148	Added
21	HARBOUR INVESTMENTS, INC.	$212	110	Hold
22	TD Waterhouse Canada Inc.	$210	103	Hold
23	BNP PARIBAS FINANCIAL MARKETS	$168	87	Trimmed
24	GROUP ONE TRADING LLC	$104	54	Trimmed
25	Caitong International Asset Management Co., Ltd	$12	6	New

Source: SEC Form 13F filings · as of 2026-06-30