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Insmed
INSM

Overview Fund Activity

435 hedge funds and large institutions have $15.2B invested in Insmed in 2025 Q1 according to their latest regulatory filings, with 56 funds opening new positions, 184 increasing their positions, 149 reducing their positions, and 49 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
435
Holders Change
–
Holders Change %
0%
% of All Funds
5.91%
Holding in Top 10
31
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+6.9%
% of All Funds
0.42%
New
56
Increased
184
Reduced
149
Closed
49
Calls
$73M
Puts
$145M
Net Calls
-$72M
Net Calls Change
-$110M

Top Buyers

1
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$485M
2
DGM
Darwin Global Management
Jersey
$1.2B
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
$263M
4
Holocene Advisors
Holocene Advisors
New York
$155M
5
DFO
Duquesne Family Office
New York
$104M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$259M
2
PAI
Palo Alto Investors
California
$75.3M
3
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
$113M
4
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
$3.03M
5
LGM
Logos Global Management
California
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
SFM
101
Soros Fund Management
New York
$23.4M -$11.3M -147,878 -32%
PAM
102
Panagora Asset Management
Massachusetts
$23.4M -$797K -10,445 -3%
SI
103
Sofinnova Investments
California
$23.2M +$3.66M +47,973 +19%
RhumbLine Advisers
104
RhumbLine Advisers
Massachusetts
$23.2M +$1.16M +15,220 +5%
Russell Investments Group
105
Russell Investments Group
United Kingdom
$23.1M +$13M +170,842 +129%
Comerica Bank
106
Comerica Bank
Texas
$22.1M +$9.12M +119,495 +70%
Barclays
107
Barclays
United Kingdom
$21.3M -$5.73M -75,166 -21%
Citigroup
108
Citigroup
New York
$21.2M +$2.3M +30,106 +12%
SCM
109
Soleus Capital Management
Connecticut
$20.9M -$3.51M -46,000 -14%
California Public Employees Retirement System
110
California Public Employees Retirement System
California
$20.3M +$696K +9,122 +4%
BGI
111
B Group Inc
Texas
$20M -$6.68M -87,500 -25%
DTC
112
Deep Track Capital
Connecticut
$19.4M +$19.4M +254,751 New
WP
113
Woodline Partners
California
$19M +$6.6M +86,540 +53%
Royal Bank of Canada
114
Royal Bank of Canada
Ontario, Canada
$18.7M +$4.67M +61,190 +33%
NIP
115
Nicholas Investment Partners
California
$17.1M +$3.14M +41,188 +23%
KCM
116
Kingdon Capital Management
New York
$16.4M -$763K -10,000 -4%
Wells Fargo
117
Wells Fargo
California
$15.7M +$3.42M +44,802 +28%
Axa
118
Axa
France
$15.6M -$1.75M -22,964 -10%
RCM
119
RA Capital Management
Massachusetts
$15.3M – – –
Federated Hermes
120
Federated Hermes
Pennsylvania
$14.7M -$3.3M -43,193 -18%
GIM
121
Granahan Investment Management
Massachusetts
$14.3M -$1.64M -21,552 -10%
CCM
122
Cutter Capital Management
New York
$14.2M -$1.87M -24,500 -12%
RPAM
123
Rhenman & Partners Asset Management
Sweden
$14.2M +$9.46M +124,000 +202%
PCM
124
Peregrine Capital Management
Minnesota
$13.8M -$953K -12,486 -6%
Legal & General Group
125
Legal & General Group
United Kingdom
$13.7M +$320K +4,188 +2%
3 4
5
6 7