ATOSSA THERAPEUTICS INC

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ATOS·04962H704·US·Common Stock·Healthcare - Biotechnology

ATOS (ATOSSA THERAPEUTICS INC) is held by 24 institutional investors as of Q2 2026. Largest holders: VANGUARD CAPITAL MANAGEMENT LLC ($698,172), AMERIPRISE FINANCIAL INC ($498,392), BlackRock, Inc. ($317,211). Net institutional sentiment: Mixed.

24

Holders

(1 Elite)

$2.6M

Total Value

50% (22)

Consensus

11 buying - 11 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)31

Insider (Form 4)46

Activist (13D/13G)47

Congressional (STOCK Act)35

Holder Quality

34

★★★★★

Elite

60

★★★★

Strong

42

★★★

Solid

80

★★

Below

61

★

Weak

Held by 24 funds

1 elite

Who's Trading

Source dates: Price Oct 16, 2026 · Insiders May 14, 2026 · Activists none · Congress none

InsiderCSChen Shu-ChihVest 10K shMay 12, 2026

InsiderSISteinhart Richard IVest 10K shMay 12, 2026

InsiderFJFinn JonathanVest 10K shMay 12, 2026

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Top Holders

Top Holders (24)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	361,747(+3.6%)	$698,172	0.0%	-43.42%	17
AMERIPRISE FINANCIAL INC	Increased	258,234(+1.2%)	$498,392	0.0%	-37.91%	24
BlackRock, Inc.	Increased	164,358(+23.4%)	$317,211	0.0%	-37.12%	19
RENAISSANCE TECHNOLOGIES LLC	Increased	132,043(+21.1%)	$254,843	0.0%	-31.26%	28
GEODE CAPITAL MANAGEMENT, LLC	Decreased	92,382(-4.8%)	$178,343	0.0%	-44.68%	0
UBS Group AG	Decreased	82,620(-10.2%)	$159,456	0.0%	-44.68%	0
JANE STREET GROUP, LLC	New	56,602	$109,242	0.0%	+50.78%	33
VFVANGUARD FIDUCIARY TRUST CO	Increased	52,583(+0.7%)	$101,485	0.0%	-38.10%	15
MILLENNIUM MANAGEMENT LLC	Decreased	46,508(-30.3%)	$89,760	0.0%	-44.68%	0
STATE STREET CORP	Unchanged	39,761	$76,739	0.0%	-38.35%	0
NORTHERN TRUST CORP	Increased	20,249(+5.3%)	$39,081	0.0%	-36.45%	14
SUSQUEHANNA INTERNATIONAL GROUP, LLP	New	15,574	$30,058	0.0%	+50.78%	30
MORGAN STANLEY	Decreased	12,345(-23.8%)	$23,825	0.0%	-38.35%	0
VGVanguard Global Advisers, LLC	Unchanged	3,089	$5,962	0.0%	-44.68%	0
ROYAL BANK OF CANADA	Increased	1,994(+209.6%)	$4,000	0.0%	+2.79%	16
JONES FINANCIAL COMPANIES LLLP	Unchanged	2,061	$3,875	0.0%	-38.35%	0
OSAIC HOLDINGS, INC.	Unchanged	587	$1,131	0.0%	-44.68%	0
JPMORGAN CHASE & CO	Increased	390(+1.8%)	$772	0.0%	-37.69%	8
Rockefeller Capital Management L.P.	Decreased	333(-5.7%)	$643	0.0%	-44.68%	0
WELLS FARGO & COMPANY/MN	Decreased	228(-23.0%)	$440	0.0%	-38.35%	0

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ATOSATOSSA THERAPEUTICS INC

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer