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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 %
PCH
51
Polar Capital Holdings
United Kingdom
$55.6M -$95K -1,245 -0.2%
NHAS
52
Novo Holdings A/S
Denmark
$55.3M – – –
SPPAM
53
Summit Partners Public Asset Management
Massachusetts
$53.7M +$5M +65,518 +10%
Marshall Wace
54
Marshall Wace
United Kingdom
$53.1M -$28.1M -367,978 -35%
TIM
55
Thornburg Investment Management
New Mexico
$52.5M -$4.51M -5,909 -8%
Millennium Management
56
Millennium Management
New York
$51.8M -$1.51M -19,815 -3%
Brown Advisory
57
Brown Advisory
Maryland
$51.3M +$721K +9,453 +1%
LFCM
58
Long Focus Capital Management
Puerto Rico
$48.1M -$1.53M -20,000 -3%
BNP Paribas Asset Management
59
BNP Paribas Asset Management
France
$46.8M -$3.18M -41,632 -6%
EA
60
Emerald Advisers
Pennsylvania
$45.3M -$6.91M -90,623 -13%
Ensign Peak Advisors
61
Ensign Peak Advisors
Utah
$45M +$4.6M +60,350 +11%
VOYA Investment Management
62
VOYA Investment Management
Georgia
$44.7M +$2.79M +36,561 +7%
Fiera Capital (Canada)
63
Fiera Capital (Canada)
Quebec, Canada
$44.2M -$200K -2,617 -0.4%
FCM
64
Frontier Capital Management
Massachusetts
$42.5M +$9.35M +122,581 +28%
UBS AM
65
UBS AM
Illinois
$41.2M +$4.02M +52,637 +11%
CAM
66
Cormorant Asset Management
Massachusetts
$40.1M -$9.54M -125,000 -19%
RSCM
67
Rock Springs Capital Management
Maryland
$39.4M -$2.6M -34,100 -6%
PA
68
Perceptive Advisors
New York
$38.9M +$27.9M +365,300 +254%
TD Asset Management
69
TD Asset Management
Ontario, Canada
$38.3M -$1.88M -24,658 -5%
1832 Asset Management
70
1832 Asset Management
Ontario, Canada
$37.2M +$37.2M +487,800 New
UBS Group
71
UBS Group
Switzerland
$36.4M +$5.49M +71,911 +18%
BNP Paribas Financial Markets
72
BNP Paribas Financial Markets
France
$35.2M +$21M +274,647 +147%
DM
73
Deerfield Management
New York
$34.9M +$34.9M +458,000 New
CS
74
Candriam SCA
Luxembourg
$34.7M +$144K +1,888 +0.4%
PBA
75
Paradigm Biocapital Advisors
New York
$34.4M +$34.4M +451,359 New
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