385 hedge funds and large institutions have $7.19B invested in Masimo in 2025 Q4 according to their latest regulatory filings, with 83 funds opening new positions, 99 increasing their positions, 131 reducing their positions, and 49 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more funds holding in top 10

Funds holding in top 10:

less ownership

Funds ownership:

13% less capital invested

Capital invested by funds: $8.29B → $7.19B (-$1.09B)

24% less repeat investments, than reductions

Existing positions increased: 99 | Existing positions reduced: 131

63% less call options, than puts

Call options by funds: $3.55M | Put options by funds: $9.69M

Holders
385
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$3.55M
Puts
$9.69M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
SI
76
Sofinnova Investments
California
$6.01M
Amundi
77
Amundi
France
$5.7M
California State Teachers Retirement System (CalSTRS)
78
California State Teachers Retirement System (CalSTRS)
California
$5.7M
Citadel Advisors
79
Citadel Advisors
Florida
$5.6M
NP
80
NS Partners
United Kingdom
$5.51M
Walleye Capital
81
Walleye Capital
New York
$5.47M
New York State Teachers Retirement System (NYSTRS)
82
New York State Teachers Retirement System (NYSTRS)
New York
$5.21M
State Board of Administration of Florida Retirement System
83
State Board of Administration of Florida Retirement System
Florida
$5.17M
Voloridge Investment Management
84
Voloridge Investment Management
Florida
$5.14M
WAM
85
Wilson Asset Management
Australia
$5.13M
Canada Pension Plan Investment Board
86
Canada Pension Plan Investment Board
Ontario, Canada
$5.01M
SO
87
STRS Ohio
Ohio
$4.8M
Manulife (Manufacturers Life Insurance)
88
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$4.32M
GF
89
Gabelli Funds
New York
$4.25M
Baird Financial Group
90
Baird Financial Group
Wisconsin
$3.99M
Nordea Investment Management
91
Nordea Investment Management
Sweden
$3.69M
CCIA
92
Campbell & Co Investment Adviser
Maryland
$3.61M
Canada Life
93
Canada Life
Manitoba, Canada
$3.46M
LCM
94
Logan Capital Management
Pennsylvania
$3.45M
OCAM
95
Onex Canada Asset Management
Ontario, Canada
$3.36M
IIM
96
INTECH Investment Management
Florida
$3.22M
MIM
97
MetLife Investment Management
New Jersey
$3.18M
WP
98
Westmount Partners
California
$3.15M
New York State Common Retirement Fund
99
New York State Common Retirement Fund
New York
$3.14M
Cerity Partners
100
Cerity Partners
New York
$3.09M