MASI icon

Masimo
MASI

Overview Fund Activity

369 hedge funds and large institutions have $9.59B invested in Masimo in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 124 increasing their positions, 135 reducing their positions, and 58 closing their positions.

Holders
369
Holders Change
-23
Holders Change %
-5.87%
% of All Funds
4.96%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
43
Increased
124
Reduced
135
Closed
58
Calls
$2.02M
Puts
$403K
Net Calls
+$1.62M
Net Calls Change
-$17K

Top Buyers

1
T. Rowe Price Investment Management
1
T. Rowe Price Investment Management
Maryland
$421M
2
Viking Global Investors
2
Viking Global Investors
Connecticut
$129M
3
BlackRock
3
BlackRock
New York
$1.77B
4
Westfield Capital Management
4
Westfield Capital Management
Massachusetts
$199M
5
Massachusetts Financial Services
5
Massachusetts Financial Services
Massachusetts
$416M

Top Sellers

1
Artisan Partners
1
Artisan Partners
Wisconsin
$0
2
Point72 Asset Management
2
Point72 Asset Management
Connecticut
$4.07M
3
Capital Research Global Investors
3
Capital Research Global Investors
California
$312M
4
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$88M
5
Millennium Management
5
Millennium Management
New York
$657K
Name Market Value Shares Shares
Change 		Shares
Change %
TRSOTSOK
126
Teachers Retirement System of the State of Kentucky
Kentucky
$2.49M 14,771 – –
SG Americas Securities
127
SG Americas Securities
New York
$2.48M 14,766 +13,143 +810%
Ohio Public Employees Retirement System (OPERS)
128
Ohio Public Employees Retirement System (OPERS)
Ohio
$2.41M 14,332 +598 +4%
SSA
129
Schonfeld Strategic Advisors
New York
$2.4M 14,239 +3,969 +39%
Empower Advisory Group
130
Empower Advisory Group
Colorado
$2.37M 14,060 – –
ASRS
131
Arizona State Retirement System
Arizona
$2.25M 13,385 +357 +3%
LFG
132
Lockerman Financial Group
California
$2.2M 13,100 – –
LSERS
133
Louisiana State Employees Retirement System
Louisiana
$2.14M 12,700 +300 +2%
IMRF
134
Illinois Municipal Retirement Fund
Illinois
$2.09M 12,420 +3,111 +33%
Handelsbanken Fonder
135
Handelsbanken Fonder
Sweden
$2.07M 12,330 -600 -5%
FAM
136
Fred Alger Management
New York
$2.05M 12,185 +3,413 +39%
Teacher Retirement System of Texas
137
Teacher Retirement System of Texas
Texas
$1.96M 11,671 -1,592 -12%
COPPSERS
138
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$1.94M 11,562 +939 +9%
PCMI
139
Paradigm Capital Management Inc
New York
$1.91M 11,353 – –
Creative Planning
140
Creative Planning
Kansas
$1.88M 11,170 -48 -0.4%
Mirae Asset Global ETFs Holdings
141
Mirae Asset Global ETFs Holdings
Hong Kong
$1.86M 11,062 -309 -3%
Russell Investments Group
142
Russell Investments Group
United Kingdom
$1.84M 10,935 -23,812 -69%
XT
143
XTX Topco
Cayman Islands
$1.82M 10,837 +10,837 New
SOMRS
144
State of Michigan Retirement System
Michigan
$1.82M 10,796 +200 +2%
Thrivent Financial for Lutherans
145
Thrivent Financial for Lutherans
Minnesota
$1.78M 10,596 +177 +2%
GCM
146
Graham Capital Management
Connecticut
$1.76M 10,480 +10,480 New
NMIMC
147
Northwestern Mutual Investment Management Company
Wisconsin
$1.69M 10,047 +166 +2%
WSFS
148
Wilmington Savings Fund Society
Delaware
$1.67M 9,950 -1,290 -11%
NMERB
149
New Mexico Educational Retirement Board
New Mexico
$1.67M 9,900 – –
KK
150
KLP Kapitalforvaltning
Norway
$1.58M 9,400 +500 +6%
4 5
6
7 8