665 hedge funds and large institutions have $37B invested in Insmed in 2025 Q4 according to their latest regulatory filings, with 193 funds opening new positions, 237 increasing their positions, 180 reducing their positions, and 80 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

0.05% more ownership

Funds ownership: 99.76%99.81% (+0.05%)

10% less call options, than puts

Call options by funds: $671M | Put options by funds: $741M

8% less funds holding in top 10

Funds holding in top 10: 2422 (-2)

Holders
665
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
22
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$671M
Puts
$741M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Marshall Wace
76
Marshall Wace
United Kingdom
$67.9M
Ensign Peak Advisors
77
Ensign Peak Advisors
Utah
$66.5M
Balyasny Asset Management
78
Balyasny Asset Management
Illinois
$66.2M
SC
79
Samlyn Capital
New York
$64.3M
GIA
80
Gateway Investment Advisers
Ohio
$63.5M
California Public Employees Retirement System
81
California Public Employees Retirement System
California
$61.8M
PCH
82
Polar Capital Holdings
United Kingdom
$59.9M
ProShare Advisors
83
ProShare Advisors
Maryland
$59.3M
BNP Paribas Asset Management
84
BNP Paribas Asset Management
France
$57.2M
RSCM
85
Rock Springs Capital Management
Maryland
$55.6M
California State Teachers Retirement System (CalSTRS)
86
California State Teachers Retirement System (CalSTRS)
California
$54M
Adage Capital Partners
87
Adage Capital Partners
Massachusetts
$52.2M
FCM
88
Frontier Capital Management
Massachusetts
$49.6M
ZIG
89
Zurich Insurance Group
Switzerland
$48.9M
National Pension Service
90
National Pension Service
South Korea
$48.8M
New York State Common Retirement Fund
91
New York State Common Retirement Fund
New York
$48.1M
Envestnet Asset Management
92
Envestnet Asset Management
Illinois
$48.1M
CAM
93
Cormorant Asset Management
Massachusetts
$47.9M
RhumbLine Advisers
94
RhumbLine Advisers
Massachusetts
$46.7M
PSC
95
Patient Square Capital
California
$46.5M
FTM
96
First Turn Management
California
$46M
TD Asset Management
97
TD Asset Management
Ontario, Canada
$45.7M
AI
98
Axiom Investors
Connecticut
$44.5M
Aberdeen Group
99
Aberdeen Group
United Kingdom
$44.1M
First Trust Advisors
100
First Trust Advisors
Illinois
$43.2M