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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 %
SQA
226
Simon Quick Advisors
New Jersey
$381K 2,267 +2,267 New
NAAA
227
New Age Alpha Advisors
New York
$372K 2,210 -60 -3%
SC
228
Syon Capital
California
$370K 2,197 +2,197 New
HR
229
Hardy Reed
Mississippi
$366K 2,175 +3 +0.1%
CB
230
Cadence Bank
Mississippi
$365K 2,172 – –
EF
231
Empowered Funds
Pennsylvania
$356K 2,117 -747 -26%
OQS
232
Occudo Quantitative Strategies
Florida
$356K 2,115 +2,115 New
NEI
233
Northwest & Ethical Investments
Ontario, Canada
$353K 2,100 – –
MSRPS
234
Maryland State Retirement & Pension System
Maryland
$341K 2,028 – –
ProShare Advisors
235
ProShare Advisors
Maryland
$336K 1,995 +101 +5%
AI
236
Atria Investments
North Carolina
$324K 1,928 -189 -9%
Jane Street
237
Jane Street
New York
$315K 1,872 -178 -9%
NSAM
238
North Star Asset Management
Wisconsin
$313K 1,860 -50 -3%
CL
239
Choreo LLC
Illinois
$309K 1,835 +402 +28%
VA
240
Vident Advisory
Georgia
$294K 1,749 -1,049 -37%
OSAM
241
O'Shaughnessy Asset Management
Connecticut
$294K 1,749 +114 +7%
OAM
242
Oppenheimer Asset Management
New York
$292K 1,733 -1,583 -48%
PCM
243
Prelude Capital Management
New York
$289K 1,720 -3,939 -70%
Janney Montgomery Scott
244
Janney Montgomery Scott
Pennsylvania
$283K 1,681 -81 -5%
CIBC Asset Management
245
CIBC Asset Management
Ontario, Canada
$281K 1,669 – –
VCM
246
Versant Capital Management
Arizona
$277K 1,647 +167 +11%
BA
247
Bridgewater Associates
Connecticut
$277K 1,645 -473 -22%
MGP
248
M&G plc
United Kingdom
$273K 1,623 +13 +0.8%
MWM
249
Mission Wealth Management
California
$270K 1,606 +1 +0.1%
SCM
250
Shelton Capital Management
Colorado
$268K 1,592 -52 -3%
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