MASI icon

Masimo
MASI

Overview Fund Activity

392 hedge funds and large institutions have $9.03B invested in Masimo in 2025 Q1 according to their latest regulatory filings, with 80 funds opening new positions, 134 increasing their positions, 117 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
392
Holders Change
+29
Holders Change %
+7.99%
% of All Funds
5.32%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
80
Increased
134
Reduced
117
Closed
47
Calls
$7.35M
Puts
$5.71M
Net Calls
+$1.63M
Net Calls Change
-$7.13M

Top Buyers

1
BlackRock
BlackRock
New York
+$195M
2
DCP
Durable Capital Partners
Maryland
+$188M
3
Holocene Advisors
Holocene Advisors
New York
+$82.9M
4
Artisan Partners
Artisan Partners
Wisconsin
+$49.8M
5
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$38.8M

Top Sellers

1
Capital Research Global Investors
Capital Research Global Investors
California
-$66.5M
2
FCM
Farallon Capital Management
California
-$65.6M
3
Citadel Advisors
Citadel Advisors
Florida
-$65.2M
4
Millennium Management
Millennium Management
New York
-$45.5M
5
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$35.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
IWM
351
Inlight Wealth Management
Georgia
$5K +$5K +30 New
IA
352
IFP Advisors
Florida
$4.66K +$4.66K +4 New
VWM
353
Valley Wealth Managers
New Jersey
$4.33K – – –
PWMG
354
Private Wealth Management Group
New Jersey
$4K – – –
S
355
Sachetta
Massachusetts
$3.83K – – –
JWA
356
JFS Wealth Advisors
Pennsylvania
$3.83K +$666 +4 +21%
LFG
357
Larson Financial Group
Missouri
$3.67K +$1.5K +9 +69%
W
358
WealthCollab
Washington
$3.33K – – –
AG
359
AmeriFlex Group
Nevada
$3.33K +$3.33K +20 New
HI
360
Harbour Investments
Wisconsin
$3.17K -$30.5K -183 -91%
BIA
361
Bell Investment Advisors
California
$2.83K – – –
WA
362
WPG Advisers
Maryland
$2.5K -$1K -6 -29%
JSAM
363
J. Safra Asset Management
New York
$2.5K – – –
MAM
364
Meeder Asset Management
Ohio
$2.33K +$2.33K +14 New
ATC
365
Adirondack Trust Company
New York
$2K – – –
WAM
366
WFA Asset Management
Wisconsin
$1.76K +$1.76K +12 New
KIM
367
Kestra Investment Management
Texas
$1.17K +$1.17K +7 New
QC
368
Quent Capital
New York
$1K -$833 -5 -45%
DPW
369
DiNuzzo Private Wealth
Pennsylvania
$1K – – –
MG
370
Mather Group
Illinois
$1K – – –
PWAM
371
Private Wealth Asset Management
Iowa
$1K +$1K +6 New
HFS
372
Hantz Financial Services
Michigan
$1K +$1K +6 New
SIC
373
SJS Investment Consulting
Ohio
$833 -$1.33K -8 -62%
Kayne Anderson Rudnick Investment Management
374
Kayne Anderson Rudnick Investment Management
California
$833 – – –
GFPC
375
Global Financial Private Client
Florida
$833 +$500 +3 +150%
13 14
15
16 17