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Gossamer Bio
GOSS

Overview Fund Activity

105 hedge funds and large institutions have $155M invested in Gossamer Bio in 2024 Q4 according to their latest regulatory filings, with 18 funds opening new positions, 32 increasing their positions, 27 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
105
Holders Change
+5
Holders Change %
+5%
% of All Funds
1.4%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
18
Increased
32
Reduced
27
Closed
13
Calls
$1.1M
Puts
$598K
Net Calls
+$506K
Net Calls Change
+$300K

Top Buyers

1
OCA
1
Octagon Capital Advisors
New York
$16.6M
2
Alyeska Investment Group
2
Alyeska Investment Group
Illinois
$7.97M
3
MAM
3
Monaco Asset Management
Monaco
$4.86M
4
6CM
4
683 Capital Management
New York
$6.31M
5
Acadian Asset Management
5
Acadian Asset Management
Massachusetts
$4.62M

Top Sellers

1
SL
1
Siren LLC
Connecticut
$4.71M
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$59K
3
Federated Hermes
3
Federated Hermes
Pennsylvania
$0
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$9.08M
5
TD Asset Management
5
TD Asset Management
Ontario, Canada
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
OCA
1
Octagon Capital Advisors
New York
$16.6M +$8.29M +9,162,117 +100%
NMC
2
NEA Management Company
Maryland
$16.4M – – –
Vanguard Group
3
Vanguard Group
Pennsylvania
$9.08M -$1.56M -1,720,248 -15%
Alyeska Investment Group
4
Alyeska Investment Group
Illinois
$7.97M +$2.75M +3,041,058 +53%
AVM
5
Arch Venture Management
Illinois
$7.29M – – –
Fidelity Investments
6
Fidelity Investments
Massachusetts
$7.18M -$2.47K -2,735 -0%
6CM
7
683 Capital Management
New York
$6.31M +$1.06M +1,175,000 +20%
PAI
8
Palo Alto Investors
California
$5.68M – – –
SCM
9
Silverarc Capital Management
Massachusetts
$5.58M +$476K +526,495 +9%
SB
10
Samsara BioCapital
California
$5.55M – – –
MAM
11
Monaco Asset Management
Monaco
$4.86M +$1.38M +1,520,721 +39%
SL
12
Siren LLC
Connecticut
$4.71M -$7.3M -8,072,642 -61%
Acadian Asset Management
13
Acadian Asset Management
Massachusetts
$4.62M +$1.05M +1,156,511 +29%
EP
14
Eversept Partners
New York
$4.5M – – –
HA
15
HHLR Advisors
Cayman Islands
$4.5M – – –
OM
16
Opaleye Management
Massachusetts
$4.06M +$746K +824,990 +23%
Millennium Management
17
Millennium Management
New York
$3.24M +$414K +457,179 +15%
Corient Private Wealth
18
Corient Private Wealth
Florida
$3.07M – – –
RSCM
19
Rock Springs Capital Management
Maryland
$2.96M – – –
PIM
20
Platinum Investment Management
Australia
$2.88M -$312K -344,613 -10%
BlackRock
21
BlackRock
New York
$2.74M +$202K +223,567 +8%
Marshall Wace
22
Marshall Wace
United Kingdom
$2.28M -$855K -950,554 -27%
Geode Capital Management
23
Geode Capital Management
Massachusetts
$2.04M +$34.5K +38,084 +2%
Deutsche Bank
24
Deutsche Bank
Germany
$1.92M – – –
Renaissance Technologies
25
Renaissance Technologies
New York
$1.55M -$29.2K -32,302 -2%
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