665 hedge funds and large institutions have $35B invested in Insmed in 2026 Q1 according to their latest regulatory filings, with 98 funds opening new positions, 286 increasing their positions, 212 reducing their positions, and 95 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
665
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$352M
Puts
$232M
Net Calls
Net Calls Change

Top Buyers

1 +$497M
2 +$259M
3 +$248M
4
Capital World Investors
Capital World Investors
California
+$209M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$196M

Top Sellers

1 -$635M
2 -$355M
3 -$146M
4
JFG
Jefferies Financial Group
New York
-$142M
5
Holocene Advisors
Holocene Advisors
New York
-$139M
Name Holding Trade Value Shares
Change
Change in
Stake
RIM
201
Rakuten Investment Management
Japan
$7.19M
Natixis Advisors
202
Natixis Advisors
Massachusetts
$7.02M
II
203
IFM Investors
Australia
$6.99M
EI
204
EFG International
$6.63M
Canada Pension Plan Investment Board
205
Canada Pension Plan Investment Board
Ontario, Canada
$6.52M
LCM
206
Legato Capital Management
California
$6.47M
Daiwa Securities Group
207
Daiwa Securities Group
Japan
$6.45M
Squarepoint
208
Squarepoint
New York
$6.43M
BMSSC
209
B. Metzler seel. Sohn & Co
Germany
$6.42M
EAM
210
Erste Asset Management
Austria
$6.38M
TIM
211
Thornburg Investment Management
New Mexico
$6.27M
KBC Group
212
KBC Group
Belgium
$6.11M
MOACM
213
Mutual of America Capital Management
New York
$6.03M
Jones Financial Companies
214
Jones Financial Companies
Missouri
$6.02M
HP
215
HealthInvest Partners
Sweden
$5.96M
Calamos Advisors
216
Calamos Advisors
Illinois
$5.95M
SCM
217
Silverarc Capital Management
Massachusetts
$5.86M
QCM
218
Quantinno Capital Management
New York
$5.81M
Korea Investment Corp
219
Korea Investment Corp
South Korea
$5.79M
ACM
220
ADAR1 Capital Management
Texas
$5.79M
CP
221
CenterBook Partners
Connecticut
$5.76M
MCM
222
McRae Capital Management
New Jersey
$5.75M
IGAM
223
iA Global Asset Management
Quebec, Canada
$5.72M
BCI
224
Brinker Capital Investments
Pennsylvania
$5.66M
KCM
225
Kennedy Capital Management
Missouri
$5.65M