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Atossa Therapeutics
ATOS

Overview Fund Activity

83 hedge funds and large institutions have $17.7M invested in Atossa Therapeutics in 2025 Q2 according to their latest regulatory filings, with 28 funds opening new positions, 13 increasing their positions, 23 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
83
Holders Change
–
Holders Change %
0%
% of All Funds
1.11%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
28
Increased
13
Reduced
23
Closed
28
Calls
$174K
Puts
$91K
Net Calls
+$83K
Net Calls Change
+$18K

Top Buyers

1
Ameriprise
1
Ameriprise
Minnesota
$2.47M
2
Millennium Management
2
Millennium Management
New York
$1.7M
3
Jane Street
3
Jane Street
New York
$381K
4
YIH
4
Y-Intercept (HK)
Hong Kong
$321K
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$346K

Top Sellers

1
BlackRock
1
BlackRock
New York
$1.78M
2
Geode Capital Management
2
Geode Capital Management
Massachusetts
$1.08M
3
State Street
3
State Street
Massachusetts
$429K
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$4.84M
5
Northern Trust
5
Northern Trust
Illinois
$219K
Name Holding Trade Value Shares
Change 		Shares
Change %
CFM
26
Catalyst Funds Management
Australia
$49.2K +$49.2K +59,300 New
GCP
27
GSA Capital Partners
United Kingdom
$42K +$42K +51,029 New
AQR Capital Management
28
AQR Capital Management
Connecticut
$40.1K +$26.6K +32,089 +198%
Commonwealth Equity Services
29
Commonwealth Equity Services
Massachusetts
$38K – – –
VF
30
Virtu Financial
New York
$31K +$31K +36,768 New
Two Sigma Advisers
31
Two Sigma Advisers
New York
$28.4K -$18.8K -22,700 -40%
Hudson Bay Capital Management
32
Hudson Bay Capital Management
Connecticut
$25.9K +$25.9K +31,235 New
RFC
33
Regions Financial Corp
Alabama
$24.9K – – –
LPL Financial
34
LPL Financial
California
$23.1K -$166 -200 -0.7%
SSA
35
Schonfeld Strategic Advisors
New York
$22.5K +$22.5K +27,168 New
JF
36
Jump Financial
Illinois
$21K +$21K +25,351 New
TSS
37
Two Sigma Securities
New York
$18.4K +$18.4K +22,220 New
PI
38
PFG Investments
New York
$17.6K +$6.23K +7,500 +55%
LCM
39
LVM Capital Management
Michigan
$17K – – –
GSC
40
Ground Swell Capital
South Carolina
$16.6K +$16.6K +19,990 New
Wolverine Trading
41
Wolverine Trading
Illinois
$16.5K +$6.2K +7,045 +60%
Barclays
42
Barclays
United Kingdom
$16K -$93.7K -109,819 -85%
Fidelity Investments
43
Fidelity Investments
Massachusetts
$14.1K +$6.43K +7,746 +83%
NP
44
NorthRock Partners
Minnesota
$13.9K – – –
AGM
45
Alpine Global Management
New York
$13.6K +$13.6K +16,356 New
DnB Asset Management
46
DnB Asset Management
Norway
$12.9K – – –
Victory Capital Management
47
Victory Capital Management
Texas
$12.8K +$195 +235 +2%
Neuberger Berman Group
48
Neuberger Berman Group
New York
$12.2K – – –
TRCT
49
Tower Research Capital (TRC)
New York
$11.2K -$181 -218 -2%
Marshall Wace
50
Marshall Wace
United Kingdom
$11.1K +$11.1K +13,400 New
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