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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
FW
126
FullCircle Wealth
Texas
$50.8K
SPS
127
Susquehanna Portfolio Strategies
Pennsylvania
$49.7K
Creative Planning
128
Creative Planning
Kansas
$49.1K
Wealth Enhancement Advisory Services
129
Wealth Enhancement Advisory Services
Minnesota
$48K
DWM
130
Drive Wealth Management
Utah
$47.9K
Jones Financial Companies
131
Jones Financial Companies
Missouri
$46.9K
VPIM
132
Vanguard Personalized Indexing Management
California
$44K
TSS
133
Two Sigma Securities
New York
$43K
KAS
134
Kestra Advisory Services
Texas
$42.1K
AIP
135
Ameritas Investment Partners
Nebraska
$41.7K
Mercer Global Advisors
136
Mercer Global Advisors
Colorado
$41.4K
X
137
Xponance
Pennsylvania
$39K
Principal Financial Group
138
Principal Financial Group
Iowa
$38.3K
BHCM
139
Brevan Howard Capital Management
Jersey
$37.1K
BJL
140
Brighton Jones LLC
Washington
$36.2K
TRCT
141
Tower Research Capital (TRC)
New York
$34.1K
Wolverine Trading
142
Wolverine Trading
Illinois
$33.3K
California State Teachers Retirement System (CalSTRS)
143
California State Teachers Retirement System (CalSTRS)
California
$31.2K
AAP
144
Arax Advisory Partners
Colorado
$28.6K
RWM
145
Rialto Wealth Management
New York
$28.3K
GS
146
GTS Securities
New York
$27.9K
MML Investors Services
147
MML Investors Services
Massachusetts
$27.2K
CCM
148
Ciovacco Capital Management
Georgia
$26.8K
Rockefeller Capital Management
149
Rockefeller Capital Management
New York
$26.8K
TYCC
150
Texas Yale Capital Corp
Florida
$26.3K