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Gossamer Bio

164 hedge funds and large institutions have $474M invested in Gossamer Bio in 2025 Q3 according to their latest regulatory filings, with 56 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:

33% more funds holding

Funds holding: 123164 (+41)

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
164
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 +$8.4M
2 +$6.88M
3 +$6.2M
4
UBS Group
UBS Group
Switzerland
+$5.42M
5
BlackRock
BlackRock
New York
+$3.75M
Name Holding Trade Value Shares
Change
Change in
Stake
76
$277K
77
$267K
78
$265K
79
$265K
80
$261K
81
$260K
82
$254K
83
$249K
84
$230K
85
$224K
86
$209K
87
$204K
88
$196K
89
$184K
90
$177K
91
$172K
92
$161K
93
$155K
94
$135K
95
$135K
96
$133K
97
$132K
98
$122K
99
$115K
100
$112K