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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.

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
1
JPMorgan Chase & Co
New York
$485M
2
DGM
2
Darwin Global Management
Jersey
$1.2B
3
Adage Capital Partners
3
Adage Capital Partners
Massachusetts
$263M
4
Holocene Advisors
4
Holocene Advisors
New York
$155M
5
NL
5
Nuveen LLC
North Carolina
$88.4M

Top Sellers

1
Norges Bank
1
Norges Bank
Norway
$0
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$259M
3
PAI
3
Palo Alto Investors
California
$75.3M
4
T. Rowe Price Investment Management
4
T. Rowe Price Investment Management
Maryland
$113M
5
Assenagon Asset Management
5
Assenagon Asset Management
Luxembourg
$3.03M
Name Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$1.39B 18,268,122 +49,149 +0.3%
BlackRock
2
BlackRock
New York
$1.22B 16,048,882 +15,938 +0.1%
DGM
3
Darwin Global Management
Jersey
$1.2B 15,397,975 +2,437,437 +19%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$986M 12,923,541 +219,131 +2%
Capital International Investors
5
Capital International Investors
California
$549M 7,198,485 +81,488 +1%
JPMorgan Chase & Co
6
JPMorgan Chase & Co
New York
$485M 6,354,022 +3,067,774 +93%
State Street
7
State Street
Massachusetts
$438M 5,747,293 -358,860 -6%
BBA
8
Baker Bros. Advisors
New York
$410M 5,380,626 +373,763 +7%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$327M 4,288,735 +201,592 +5%
Adage Capital Partners
10
Adage Capital Partners
Massachusetts
$263M 3,446,944 +1,799,382 +109%
Fidelity Investments
11
Fidelity Investments
Massachusetts
$259M 3,394,384 -1,461,865 -30%
Artisan Partners
12
Artisan Partners
Wisconsin
$245M 3,217,268 +90,929 +3%
RI
13
RTW Investments
New York
$230M 3,014,558 – –
Ameriprise
14
Ameriprise
Minnesota
$225M 2,951,622 +101,525 +4%
AllianceBernstein
15
AllianceBernstein
Tennessee
$185M 2,423,513 +59,952 +3%
Fidelity International
16
Fidelity International
Bermuda
$182M 2,390,201 -247,959 -9%
Macquarie Group
17
Macquarie Group
Australia
$180M 2,362,105 +48,946 +2%
William Blair Investment Management
18
William Blair Investment Management
Illinois
$176M 2,313,217 -120,226 -5%
Franklin Resources
19
Franklin Resources
California
$164M 2,148,284 -11,819 -0.5%
Holocene Advisors
20
Holocene Advisors
New York
$155M 2,026,422 +1,338,710 +195%
Pictet Asset Management
21
Pictet Asset Management
Switzerland
$154M 2,013,329 +53,611 +3%
ClearBridge Investments
22
ClearBridge Investments
New York
$140M 1,828,728 -49,722 -3%
Invesco
23
Invesco
Georgia
$137M 1,791,324 +775,234 +76%
Principal Financial Group
24
Principal Financial Group
Iowa
$134M 1,755,373 -62,270 -3%
Northern Trust
25
Northern Trust
Illinois
$128M 1,683,838 -66,804 -4%
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