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Gossamer Bio

161 hedge funds and large institutions have $474M invested in Gossamer Bio in 2025 Q3 according to their latest regulatory filings, with 53 funds opening new positions, 49 increasing their positions, 44 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

31% more funds holding

Funds holding: 123161 (+38)

11% more repeat investments, than reductions

Existing positions increased: 49 | Existing positions reduced: 44

1.41% more ownership

Funds ownership: 77.79%79.21% (+1.4%)

Holders
161
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$26.8M
Puts
$738K
Net Calls
Net Calls Change

Top Buyers

1 +$10M
2 +$8.21M
3 +$7.4M
4
UBS Group
UBS Group
Switzerland
+$6.46M
5
BlackRock
BlackRock
New York
+$4.48M

Top Sellers

1 -$9.66M
2 -$8.49M
3 -$6.71M
4
MAM
Monaco Asset Management
Monaco
-$5.71M
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$5.61M
Name Holding Trade Value Shares
Change
Change in
Stake
AB
151
Amalgamated Bank
New York
$17K
SS
152
SBI Securities
Japan
$13.7K
SPIA
153
Steward Partners Investment Advisory
New York
$2.63K
FDCDDQ
154
Federation des caisses Desjardins du Quebec
Quebec, Canada
$1.97K
EWA
155
EverSource Wealth Advisors
Alabama
$1.23K
SCM
156
Sterling Capital Management
North Carolina
$1.21K
PNC Financial Services Group
157
PNC Financial Services Group
Pennsylvania
$760
TWD
158
True Wealth Design
Ohio
$545
FFA
159
Farther Finance Advisors
California
$184
MBFW
160
Morton Brown Family Wealth
Pennsylvania
$66
LCM
161
Laurion Capital Management
New York
SSA
162
Schonfeld Strategic Advisors
New York
DCM
163
DAFNA Capital Management
California
HCM
164
Highbridge Capital Management
New York
Ameriprise
165
Ameriprise
Minnesota
Susquehanna International Group
166
Susquehanna International Group
Pennsylvania
SOW
167
State of Wyoming
Wyoming
DC
168
Diametric Capital
Massachusetts
SAM
169
Silvercrest Asset Management
New York
CM
170
Caption Management
Oklahoma
US Bancorp
171
US Bancorp
Minnesota
BBP
172
Banco BTG Pactual
Brazil
DIG
173
Dauntless Investment Group
New Hampshire
Raymond James Financial
174
Raymond James Financial
Florida
OCM
175
Opti Capital Management
New York