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Atossa Therapeutics
ATOS

Overview Fund Activity

82 hedge funds and large institutions have $17.5M invested in Atossa Therapeutics in 2025 Q2 according to their latest regulatory filings, with 28 funds opening new positions, 13 increasing their positions, 22 reducing their positions, and 28 closing their positions.

Holders
82
Holders Change
-1
Holders Change %
-1.2%
% of All Funds
1.1%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
28
Increased
13
Reduced
22
Closed
28
Calls
$174K
Puts
$61K
Net Calls
+$113K
Net Calls Change
+$48K

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 Market Value Shares Shares
Change 		Shares
Change %
GCP
26
GSA Capital Partners
United Kingdom
$42K 51,029 +51,029 New
AQR Capital Management
27
AQR Capital Management
Connecticut
$40.1K 48,329 +32,089 +198%
Commonwealth Equity Services
28
Commonwealth Equity Services
Massachusetts
$38K 46,001 – –
VF
29
Virtu Financial
New York
$31K 36,768 +36,768 New
Two Sigma Advisers
30
Two Sigma Advisers
New York
$28.4K 34,200 -22,700 -40%
Hudson Bay Capital Management
31
Hudson Bay Capital Management
Connecticut
$25.9K 31,235 +31,235 New
RFC
32
Regions Financial Corp
Alabama
$24.9K 30,000 – –
LPL Financial
33
LPL Financial
California
$23.1K 27,856 -200 -0.7%
SSA
34
Schonfeld Strategic Advisors
New York
$22.5K 27,168 +27,168 New
JF
35
Jump Financial
Illinois
$21K 25,351 +25,351 New
TSS
36
Two Sigma Securities
New York
$18.4K 22,220 +22,220 New
PI
37
PFG Investments
New York
$17.6K 21,250 +7,500 +55%
LCM
38
LVM Capital Management
Michigan
$17K 21,000 – –
GSC
39
Ground Swell Capital
South Carolina
$16.6K 19,990 +19,990 New
Wolverine Trading
40
Wolverine Trading
Illinois
$16.5K 18,761 +7,045 +60%
Barclays
41
Barclays
United Kingdom
$16K 18,759 -109,819 -85%
Fidelity Investments
42
Fidelity Investments
Massachusetts
$14.1K 17,037 +7,746 +83%
NP
43
NorthRock Partners
Minnesota
$13.9K 16,750 – –
AGM
44
Alpine Global Management
New York
$13.6K 16,356 +16,356 New
DnB Asset Management
45
DnB Asset Management
Norway
$12.9K 15,600 – –
Victory Capital Management
46
Victory Capital Management
Texas
$12.8K 15,397 +235 +2%
Neuberger Berman Group
47
Neuberger Berman Group
New York
$12.2K 14,700 – –
TRCT
48
Tower Research Capital (TRC)
New York
$11.2K 13,479 -218 -2%
Marshall Wace
49
Marshall Wace
United Kingdom
$11.1K 13,400 +13,400 New
ECM
50
ExodusPoint Capital Management
New York
$11K 13,516 +13,516 New
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