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Gossamer Bio

123 hedge funds and large institutions have $218M invested in Gossamer Bio in 2025 Q2 according to their latest regulatory filings, with 33 funds opening new positions, 41 increasing their positions, 24 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
123
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$4.37M
Puts
$222K
Net Calls
Net Calls Change

Top Buyers

1 +$9.89M
2 +$2.49M
3 +$1.74M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$1.45M
5
Renaissance Technologies
Renaissance Technologies
New York
+$1.27M

Top Sellers

1 -$2.76M
2 -$2.4M
3 -$2.38M
4
Marshall Wace
Marshall Wace
United Kingdom
-$1.89M
5
MAM
Monaco Asset Management
Monaco
-$1.42M
Name Holding Trade Value Shares
Change
Change in
Stake
26
$1.99M
27
$1.87M
28
$1.7M
29
$1.65M
30
$1.41M
31
$1.38M
32
$1.35M
33
$1.34M
34
$1.1M
35
$1.05M
36
$1.01M
37
$944K
38
$935K
39
$898K
40
$680K
41
$612K
42
$610K
43
$609K
44
$598K
45
$534K
46
$509K
47
$476K
48
$471K
49
$460K
50
$431K