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Atossa Therapeutics
ATOS

Overview Fund Activity

83 hedge funds and large institutions have $19.1M invested in Atossa Therapeutics in 2025 Q1 according to their latest regulatory filings, with 10 funds opening new positions, 18 increasing their positions, 29 reducing their positions, and 12 closing their positions.

Holders
83
Holders Change
-3
Holders Change %
-3.49%
% of All Funds
1.13%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
10
Increased
18
Reduced
29
Closed
12
Calls
$123K
Puts
$58K
Net Calls
+$65K
Net Calls Change
+$4K

Top Buyers

1
Squarepoint
1
Squarepoint
New York
$322K
2
Renaissance Technologies
2
Renaissance Technologies
New York
$1.25M
3
Susquehanna International Group
3
Susquehanna International Group
Pennsylvania
$296K
4
NL
4
Nuveen LLC
North Carolina
$115K
5
Charles Schwab
5
Charles Schwab
California
$284K

Top Sellers

1
UBS Group
1
UBS Group
Switzerland
$306K
2
Citadel Advisors
2
Citadel Advisors
Florida
$0
3
VF
3
Virtu Financial
New York
$0
4
JPMorgan Chase & Co
4
JPMorgan Chase & Co
New York
$80K
5
Jane Street
5
Jane Street
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
AF
76
Allworth Financial
California
$515 702 – –
Jones Financial Companies
77
Jones Financial Companies
Missouri
$487 700 +700 New
RA
78
Rise Advisors
New York
$437 650 +650 New
EWA
79
EverSource Wealth Advisors
Alabama
$71 105 +73 +228%
CA
80
Clearstead Advisors
Ohio
$48 70 – –
TWD
81
True Wealth Design
Ohio
$47 69 +69 New
LFG
82
Larson Financial Group
Missouri
$13 20 -80 -80%
Citadel Advisors
83
Citadel Advisors
Florida
– – -427,820 Closed
VF
84
Virtu Financial
New York
– – -208,196 Closed
Jane Street
85
Jane Street
New York
– – -126,704 Closed
Two Sigma Investments
86
Two Sigma Investments
New York
– – -89,837 Closed
XT
87
XTX Topco
Cayman Islands
– – -79,176 Closed
Cetera Investment Advisers
88
Cetera Investment Advisers
Illinois
– – -34,227 Closed
HF
89
HRT Financial
New York
– – -31,501 Closed
Millennium Management
90
Millennium Management
New York
– – -29,149 Closed
TSS
91
Two Sigma Securities
New York
– – -22,325 Closed
KOC
92
Koss-Olinger Consulting
Florida
– – -12,000 Closed
SJIM
93
St. Johns Investment Management
Florida
– – -1,550 Closed
RS
94
R Squared
Hong Kong
– – -1,020 Closed
CFGS
95
Concourse Financial Group Securities
Alabama
– – – –
HFS
96
Hantz Financial Services
Michigan
$0 82 – –
1 2 3
4