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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
26
$4.92M
27
$4.55M
28
$3.93M
29
$3.72M
30
$3.7M
31
$3.63M
32
$3.49M
33
$3.36M
34
$2.83M
35
$2.77M
36
$2.63M
37
$2.43M
38
$2.1M
39
$2.03M
40
$2.01M
41
$1.91M
42
$1.85M
43
$1.8M
44
$1.7M
45
$1.69M
46
$1.67M
47
$1.49M
48
$1.44M
49
$1.31M
50
$1.3M