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Gossamer Bio
GOSS

Overview Fund Activity

119 hedge funds and large institutions have $187M invested in Gossamer Bio in 2025 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 35 increasing their positions, 30 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
119
Holders Change
+14
Holders Change %
+13.33%
% of All Funds
1.62%
Holding in Top 10
3
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+200%
% of All Funds
0.04%
New
24
Increased
35
Reduced
30
Closed
9
Calls
$2.93M
Puts
$117K
Net Calls
+$2.82M
Net Calls Change
+$2.31M

Top Buyers

1
Susquehanna International Group
1
Susquehanna International Group
Pennsylvania
$3.21M
2
Acadian Asset Management
2
Acadian Asset Management
Massachusetts
$6.99M
3
Goldman Sachs
3
Goldman Sachs
New York
$1.03M
4
Arrowstreet Capital
4
Arrowstreet Capital
Massachusetts
$884K
5
AI
5
Atom Investors
Texas
$772K

Top Sellers

1
Alyeska Investment Group
1
Alyeska Investment Group
Illinois
$4.58M
2
PIM
2
Platinum Investment Management
Australia
$1.9M
3
Jacobs Levy Equity Management
3
Jacobs Levy Equity Management
New Jersey
$310K
4
EP
4
Eversept Partners
New York
$4.29M
5
Millennium Management
5
Millennium Management
New York
$2.95M
Name Holding Trade Value Shares
Change 		Shares
Change %
OAC
51
OMERS Administration Corp
Ontario, Canada
$387K +$387K +351,600 New
SAM
52
Silverback Asset Management
North Carolina
$385K – – –
SMC
53
Smith, Moore & Co
Missouri
$330K – – –
Balyasny Asset Management
54
Balyasny Asset Management
Illinois
$318K +$318K +289,265 New
Jacobs Levy Equity Management
55
Jacobs Levy Equity Management
New Jersey
$310K -$1.38M -1,252,404 -82%
DP
56
Diadema Partners
New Jersey
$297K +$56.8K +51,602 +24%
Victory Capital Management
57
Victory Capital Management
Texas
$290K -$1.45K -1,322 -0.5%
Barclays
58
Barclays
United Kingdom
$270K +$270K +245,000 +245,000%
ACM
59
ADAR1 Capital Management
Texas
$250K -$75.2K -68,385 -23%
UBS Group
60
UBS Group
Switzerland
$242K +$221K +201,234 +1,057%
Squarepoint
61
Squarepoint
New York
$240K +$161K +145,977 +203%
Group One Trading
62
Group One Trading
Illinois
$229K +$146K +133,100 +178%
SSA
63
Schonfeld Strategic Advisors
New York
$222K +$51.7K +47,015 +30%
JG
64
Jain Global
New York
$220K +$220K +199,902 New
CSS
65
Cubist Systematic Strategies
Connecticut
$213K +$213K +194,031 New
Bank of America
66
Bank of America
North Carolina
$180K +$86.9K +79,042 +93%
Citadel Advisors
67
Citadel Advisors
Florida
$173K +$18.6K +16,925 +12%
BC
68
Birchview Capital
Vermont
$152K – – –
SFA
69
Sequoia Financial Advisors
Ohio
$130K – – –
QC
70
Quantessence Capital
New York
$130K +$130K +118,349 New
LP
71
LMR Partners
United Kingdom
$127K +$127K +115,649 New
ECM
72
ExodusPoint Capital Management
New York
$116K +$116K +105,056 New
JFG
73
Jefferies Financial Group
New York
$110K – – –
DC
74
Diametric Capital
Massachusetts
$106K -$140K -127,657 -57%
PAS
75
Point72 Asia (Singapore)
Singapore
$91.4K +$91.4K +83,130 New
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