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Gossamer Bio
GOSS

Overview Fund Activity

123 hedge funds and large institutions have $218M invested in Gossamer Bio in 2025 Q2 according to their latest regulatory filings, with 33 funds opening new positions, 40 increasing their positions, 25 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
123
Holders Change
+4
Holders Change %
+3.36%
% of All Funds
1.65%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
33
Increased
40
Reduced
25
Closed
29
Calls
$4.37M
Puts
$222K
Net Calls
+$4.15M
Net Calls Change
+$1.33M

Top Buyers

1
BlackRock
1
BlackRock
New York
$14.9M
2
Geode Capital Management
2
Geode Capital Management
Massachusetts
$5.6M
3
State Street
3
State Street
Massachusetts
$3.05M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$14M
5
Renaissance Technologies
5
Renaissance Technologies
New York
$3.36M

Top Sellers

1
Susquehanna International Group
1
Susquehanna International Group
Pennsylvania
$471K
2
EP
2
Eversept Partners
New York
$2.09M
3
Millennium Management
3
Millennium Management
New York
$610K
4
Marshall Wace
4
Marshall Wace
United Kingdom
$0
5
MAM
5
Monaco Asset Management
Monaco
$4.37M
Name Holding Trade Value Shares
Change 		Shares
Change %
AI
126
Allostery Investments
Connecticut
– -$674K -613,028 Closed
HF
127
HRT Financial
New York
– -$428K -389,452 Closed
OAC
128
OMERS Administration Corp
Ontario, Canada
– -$387K -351,600 Closed
Balyasny Asset Management
129
Balyasny Asset Management
Illinois
– -$318K -289,265 Closed
DP
130
Diadema Partners
New Jersey
– -$297K -269,589 Closed
Squarepoint
131
Squarepoint
New York
– -$240K -217,921 Closed
JG
132
Jain Global
New York
– -$220K -199,902 Closed
CSS
133
Cubist Systematic Strategies
Connecticut
– -$213K -194,031 Closed
QC
134
Quantessence Capital
New York
– -$130K -118,349 Closed
LP
135
LMR Partners
United Kingdom
– -$127K -115,649 Closed
ECM
136
ExodusPoint Capital Management
New York
– -$116K -105,056 Closed
JFG
137
Jefferies Financial Group
New York
– -$110K -100,000 Closed
PAS
138
Point72 Asia (Singapore)
Singapore
– -$91.4K -83,130 Closed
FAIM
139
Financial Advocates Investment Management
Washington
– -$86.5K -78,616 Closed
PAP
140
Persistent Asset Partners
Hong Kong
– -$68.2K -61,984 Closed
CFM
141
Catalyst Funds Management
Australia
– -$57.2K -52,039 Closed
HWM
142
HB Wealth Management
Georgia
– -$51.4K -46,700 Closed
Hudson Bay Capital Management
143
Hudson Bay Capital Management
Connecticut
– -$40.6K -36,900 Closed
VF
144
Virtu Financial
New York
– -$38K -34,971 Closed
BHCM
145
Brevan Howard Capital Management
Jersey
– -$26K -23,672 Closed
TCM
146
Traynor Capital Management
Pennsylvania
– -$25.6K -23,272 Closed
CAS
147
CTC Alternative Strategies
Illinois
– -$18.3K -16,600 Closed
PD
148
Point72 (DIFC)
United Arab Emirates
– -$14K -12,700 Closed
MC
149
Moors & Cabot
Massachusetts
– -$12.1K -11,000 Closed
BT
150
Banque Transatlantique
France
– -$3.04K -2,986 Closed
3 4 5
6
7