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Gossamer Bio

184 hedge funds and large institutions have $56.3M invested in Gossamer Bio in 2026 Q1 according to their latest regulatory filings, with 46 funds opening new positions, 71 increasing their positions, 49 reducing their positions, and 53 closing their positions.

New
Increased
Maintained
Reduced
Closed

558% more call options, than puts

Call options by funds: $1.24M | Put options by funds: $189K

45% more repeat investments, than reductions

Existing positions increased: 71 | Existing positions reduced: 49

6% less funds holding

Funds holding: 195184 (-11)

9.24% less ownership

Funds ownership: 81.58%72.34% (-9.2%)

13% less first-time investments, than exits

New positions opened: 46 | Existing positions closed: 53

67% less funds holding in top 10

Funds holding in top 10: 31 (-2)

90% less capital invested

Capital invested by funds: $585M → $56.3M (-$529M)

Holders
184
Holders Change
-11
Holders Change %
-5.64%
% of All Funds
2.27%
Holding in Top 10
1
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-66.67%
% of All Funds
0.01%
New
46
Increased
71
Reduced
49
Closed
53
Calls
$1.24M
Puts
$189K
Net Calls
+$1.05M
Net Calls Change
-$20.4M
Name Holding Trade Value Shares
Change
Change in
Stake
N
176
Natixis
France
$302 +$1.45K +920 New
SIC
177
SJS Investment Consulting
Ohio
$232 +$1.01K +646 +1,095%
SS
178
SBI Securities
Japan
$202 -$5.95K -3,786 -86%
PNC Financial Services Group
179
PNC Financial Services Group
Pennsylvania
$133 +$322 +205 +103%
CFM
180
Cornerstone Financial Management
Massachusetts
$93
TWD
181
True Wealth Design
Ohio
$8 -$596 -379 -94%
MBFW
182
Morton Brown Family Wealth
Pennsylvania
$8
TWC
183
TD Waterhouse Canada
Ontario, Canada
$5 +$24 +15 New
HWA
184
HHM Wealth Advisors
Tennessee
$1 +$2 +1 New
PAI
185
Palo Alto Investors
California
-$13.9M -4,471,592 Closed
PA
186
Perceptive Advisors
New York
-$9.73M -3,139,669 Closed
OM
187
Opaleye Management
Massachusetts
-$8.43M -2,720,000 Closed
Two Sigma Advisers
188
Two Sigma Advisers
New York
-$8.05M -2,596,900 Closed
SCM
189
Silverarc Capital Management
Massachusetts
-$6.62M -2,135,722 Closed
Walleye Capital
190
Walleye Capital
New York
-$3.34M -1,077,032 Closed
IHAM
191
Integral Health Asset Management
New York
-$3.1M -1,000,000 Closed
MIM
192
Monashee Investment Management
Massachusetts
-$3.1M -1,000,000 Closed
HF
193
HRT Financial
New York
-$2.97M -956,879 Closed
Arrowstreet Capital
194
Arrowstreet Capital
Massachusetts
-$2.33M -750,308 Closed
Citadel Advisors
195
Citadel Advisors
Florida
-$1.11M -704,787 Closed
Wellington Management Group
196
Wellington Management Group
Massachusetts
-$1.86M -601,323 Closed
PIM
197
Platinum Investment Management
Australia
-$1.74M -561,951 Closed
SAM
198
Silverback Asset Management
North Carolina
-$786K -500,000 Closed
EAM
199
Exome Asset Management
New York
-$1.4M -451,699 Closed
AG
200
Algert Global
California
-$1.03M -332,336 Closed