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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
51
$1.19M
52
$1.18M
53
$926K
54
$883K
55
$813K
56
$788K
57
$736K
58
$732K
59
$723K
60
$715K
61
$654K
62
$592K
63
$559K
64
$549K
65
$539K
66
$511K
67
$502K
68
$428K
69
$364K
70
$363K
71
$358K
72
$354K
73
$349K
74
$309K
75
$307K