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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 %
CCM
226
Coldstream Capital Management
Washington
$383K +$673 +4 +0.2%
IC
227
Inscription Capital
Texas
$383K +$383K +2,274 New
SQA
228
Simon Quick Advisors
New Jersey
$381K +$381K +2,267 New
NAAA
229
New Age Alpha Advisors
New York
$372K -$10.1K -60 -3%
SC
230
Syon Capital
California
$370K +$370K +2,197 New
HR
231
Hardy Reed
Mississippi
$366K +$505 +3 +0.1%
CB
232
Cadence Bank
Mississippi
$365K – – –
EF
233
Empowered Funds
Pennsylvania
$356K -$126K -747 -26%
OQS
234
Occudo Quantitative Strategies
Florida
$356K +$356K +2,115 New
NEI
235
Northwest & Ethical Investments
Ontario, Canada
$353K – – –
MSRPS
236
Maryland State Retirement & Pension System
Maryland
$341K – – –
ProShare Advisors
237
ProShare Advisors
Maryland
$336K +$17K +101 +5%
AI
238
Atria Investments
North Carolina
$324K -$31.8K -189 -9%
Jane Street
239
Jane Street
New York
$315K -$29.9K -178 -9%
NSAM
240
North Star Asset Management
Wisconsin
$313K -$8.41K -50 -3%
CL
241
Choreo LLC
Illinois
$309K +$67.6K +402 +28%
VA
242
Vident Advisory
Georgia
$294K -$176K -1,049 -37%
OSAM
243
O'Shaughnessy Asset Management
Connecticut
$294K +$19.2K +114 +7%
OAM
244
Oppenheimer Asset Management
New York
$292K -$266K -1,583 -48%
PCM
245
Prelude Capital Management
New York
$289K -$663K -3,939 -70%
Janney Montgomery Scott
246
Janney Montgomery Scott
Pennsylvania
$283K -$13.6K -81 -5%
CIBC Asset Management
247
CIBC Asset Management
Ontario, Canada
$281K – – –
VCM
248
Versant Capital Management
Arizona
$277K +$28.1K +167 +11%
BA
249
Bridgewater Associates
Connecticut
$277K -$79.6K -473 -22%
MGP
250
M&G plc
United Kingdom
$273K +$2.18K +13 +0.8%
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