ATOSSA THERAPEUTICS INC (ATOS) is held by 24 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is VANGUARD CAPITAL MANAGEMENT LLC as of Q1 2026.

Are institutions buying or selling ATOS?

In Q1 2026, 5 institutions opened or increased positions in ATOSSA THERAPEUTICS INC while 41 reduced or exited — a net selling quarter.

What is the Smart Money Verdict on ATOS?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for ATOSSA THERAPEUTICS INC.

How many hedge funds hold ATOS?

24 institutional investors report holding ATOSSA THERAPEUTICS INC (ATOS) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into ATOS?

As of Q1 2026, tracked institutions in ATOSSA THERAPEUTICS INC show 5 buyers versus 41 sellers — net outflows.

ATOSSA THERAPEUTICS INC

ATOS·04962H704·US·Common Stock·Healthcare - Biotechnology-13D/G

Holders

Avg rating(6 Elite)

$6.5M

Total Value

11% (46)

Fund Consensus

5 buying - 41 selling

Smart Money Verdict

View all

Held by 24 funds

6 elite

Who's Trading

Activist

The Vanguard Group4.5%Jul 29, 2025

Activist

BlackRock, Inc.1.6%Jul 16, 2025

InsiderQCQUAY STEVEN CBuy $10KMay 21, 2025

InsiderRLRemmel H. LawrenceBuy $7KMar 26, 2025

View all insider trades View all activist filings

13F: Mar 31, 2026Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VAVANGUARD CAPITAL MANAGEMENT LLC	New	349,096	$1.8M	0.0%	-49.79%	39
AMERIPRISE FINANCIAL INC	Decreased	255,134(-93.3%)	$1.3M	0.0%	-80.79%	0
BlackRock, Inc.	Decreased	133,169(-93.3%)	$700,469	0.0%	-83.71%	0
RENAISSANCE TECHNOLOGIES LLC	Decreased	109,007(-94.7%)	$573,377	0.0%	-84.80%	0
GEODE CAPITAL MANAGEMENT, LLC	Decreased	97,061(-92.9%)	$510,657	0.0%	-94.42%	0
UBS Group AG	Decreased	92,034(-76.4%)	$484,099	0.0%	-81.82%	0
MILLENNIUM MANAGEMENT LLC	Decreased	66,739(-94.6%)	$351,047	0.0%	-82.05%	0
VFVANGUARD FIDUCIARY TRUST CO	New	52,235	$274,756	0.0%	-49.79%	32
STATE STREET CORP	Decreased	39,761(-93.3%)	$209,143	0.0%	-84.48%	0
NORTHERN TRUST CORP	Decreased	19,224(-93.3%)	$101,118	0.0%	-93.21%	0
MORGAN STANLEY	Decreased	16,202(-73.7%)	$85,222	0.0%	-86.73%	0
VGVanguard Global Advisers, LLC	New	3,089	$16,248	0.0%	-49.79%	28
JONES FINANCIAL COMPANIES LLLP	Increased	2,061(+194.4%)	$9,728	0.0%	-64.54%	19
GROUP ONE TRADING LLC	Decreased	609(-90.9%)	$3,203	0.0%	-74.52%	0
OSAIC HOLDINGS, INC.	Decreased	587(-93.4%)	$3,086	0.0%	-92.46%	0
ROYAL BANK OF CANADA	Decreased	644(-31.7%)	$3,000	0.0%	-82.38%	0
Rockefeller Capital Management L.P.	Decreased	353(-92.9%)	$1,857	0.0%	-81.84%	0
JPMORGAN CHASE & CO	Decreased	383(-99.0%)	$1,804	0.0%	-81.99%	0
NewEdge Advisors, LLC	Decreased	333(-93.3%)	$1,752	0.0%	-73.56%	0
WELLS FARGO & COMPANY/MN	Increased	296(+256.6%)	$1,557	0.0%	-70.92%	12