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Masimo
MASI

Overview Fund Activity

373 hedge funds and large institutions have $9.67B invested in Masimo in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 126 increasing their positions, 136 reducing their positions, and 58 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
373
Holders Change
-19
Holders Change %
-4.85%
% of All Funds
5%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
43
Increased
126
Reduced
136
Closed
58
Calls
$10.1M
Puts
$3.87M
Net Calls
+$6.21M
Net Calls Change
+$4.58M

Top Buyers

1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$139M
2
Viking Global Investors
Viking Global Investors
Connecticut
+$129M
3
BlackRock
BlackRock
New York
+$107M
4
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$85.7M
5
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$84.5M

Top Sellers

1
Artisan Partners
Artisan Partners
Wisconsin
-$49.8M
2
Point72 Asset Management
Point72 Asset Management
Connecticut
-$49M
3
Capital Research Global Investors
Capital Research Global Investors
California
-$33.7M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$30.3M
5
Millennium Management
Millennium Management
New York
-$22M
Name Holding Trade Value Shares
Change 		Shares
Change %
Calamos Advisors
176
Calamos Advisors
Illinois
$945K -$3M -17,832 -76%
WG
177
Winton Group
United Kingdom
$945K +$945K +5,617 New
Bank of Montreal
178
Bank of Montreal
Ontario, Canada
$936K -$95K -565 -9%
BOSSRA
179
B.O.S.S. Retirement Advisors
Utah
$897K – – –
Neuberger Berman Group
180
Neuberger Berman Group
New York
$853K -$11.8M -69,893 -93%
SOADOR
181
State of Alaska Department of Revenue
Alaska
$850K -$25.2K -150 -3%
QCG
182
Quadrant Capital Group
Ohio
$838K +$157K +933 +23%
Franklin Resources
183
Franklin Resources
California
$825K -$1.24M -7,384 -60%
BPC
184
Bryce Point Capital
New York
$822K +$822K +4,885 New
BCI
185
Brinker Capital Investments
Pennsylvania
$819K +$17.5K +104 +2%
EAM
186
Eukles Asset Management
Ohio
$816K -$44.2K -263 -5%
Public Employees Retirement Association of Colorado
187
Public Employees Retirement Association of Colorado
Colorado
$788K -$26.2K -156 -3%
LNWWM
188
Laird Norton Wetherby Wealth Management
California
$767K +$767K +4,557 New
BNP Paribas Financial Markets
189
BNP Paribas Financial Markets
France
$754K -$11.1M -66,240 -94%
Kovitz Investment Group Partners
190
Kovitz Investment Group Partners
Illinois
$739K +$80.7K +480 +12%
Mitsubishi UFJ Asset Management
191
Mitsubishi UFJ Asset Management
Japan
$727K +$47.1K +280 +7%
VAS
192
Vestmark Advisory Solutions
Massachusetts
$715K +$164K +976 +30%
PAG
193
Private Advisor Group
New Jersey
$714K -$1.85K -11 -0.3%
Federated Hermes
194
Federated Hermes
Pennsylvania
$707K -$7.87M -46,801 -92%
US Bancorp
195
US Bancorp
Minnesota
$701K -$26.2K -156 -4%
SW
196
SteelPeak Wealth
California
$684K -$505 -3 -0.1%
NIM
197
NEOS Investment Management
Connecticut
$664K -$99.9K -594 -13%
TE
198
Tema ETFs
New York
$664K -$99.9K -594 -13%
Millennium Management
199
Millennium Management
New York
$657K -$22M -130,899 -97%
HighTower Advisors
200
HighTower Advisors
Illinois
$654K -$111K -661 -15%
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