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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 %
HI
351
Harbour Investments
Wisconsin
$1.51K -$1.68K -10 -53%
DPW
352
DiNuzzo Private Wealth
Pennsylvania
$1.01K – – –
Kayne Anderson Rudnick Investment Management
353
Kayne Anderson Rudnick Investment Management
California
$841 – – –
CFD
354
Creative Financial Designs
Indiana
$841 – – –
PS
355
Principal Securities
Iowa
$673 -$9.09K -54 -93%
HWP
356
Highline Wealth Partners
California
$673 – – –
PWMG
357
Prestige Wealth Management Group
New Jersey
$673 – – –
CH
358
Cromwell Holdings
Wyoming
$673 +$673 +4 New
HFS
359
Hughes Financial Services
Virginia
$579 – – –
SC
360
SouthState Corp
Florida
$505 -$13K -77 -96%
SIC
361
SJS Investment Consulting
Ohio
$505 -$337 -2 -40%
BFS
362
Bare Financial Services
Pennsylvania
$505 – – –
RWM
363
Rialto Wealth Management
New York
$337 +$337 +2 New
CFP
364
Comprehensive Financial Planning
Pennsylvania
$336 – – –
BHWM
365
Bay Harbor Wealth Management
Maryland
$336 +$168 +1 +100%
HIA
366
HFM Investment Advisors
New Jersey
$336 +$168 +1 +100%
AF
367
Advisornet Financial
Minnesota
$336 +$336 +2 New
TPWA
368
Twin Peaks Wealth Advisors
California
$300 +$300 +2 New
DF
369
DecisionPoint Financial
Arizona
$170 +$170 +1 New
PWM
370
Parkworth Wealth Management
California
$168 – – –
RIL
371
Rothschild Investment LLC
Illinois
$168 – – –
TIM
372
Tortoise Investment Management
New York
$168 +$168 +1 New
FMP
373
Financial Management Professionals
Texas
$168 +$168 +1 New
Artisan Partners
374
Artisan Partners
Wisconsin
– -$49.8M -299,023 Closed
ECM
375
ExodusPoint Capital Management
New York
– -$9.96M -59,792 Closed
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15
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