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 %
NA
326
NewEdge Advisors
Louisiana
$18.6K – – –
AAP
327
Arax Advisory Partners
Colorado
$18.3K +$15.7K +94 +588%
FDW
328
Fourth Dimension Wealth
Ohio
$16.7K – – –
GWM
329
Geneos Wealth Management
Colorado
$16.3K +$12K +72 +277%
PFBT
330
Parkside Financial Bank & Trust
Missouri
$15.5K +$12.5K +75 +417%
RA
331
Rise Advisors
New York
$15.5K -$6.83K -41 -31%
TWD
332
True Wealth Design
Ohio
$14.8K +$3.17K +19 +27%
SIS
333
Sound Income Strategies
Florida
$14.2K – – –
C
334
Covestor
United Kingdom
$14K +$171 +1 +1%
SC
335
SouthState Corp
Florida
$13.3K +$1.67K +10 +14%
CTC
336
Central Trust Company
Missouri
$13.2K – – –
MCM
337
MAI Capital Management
Ohio
$12.2K – – –
HIW
338
Holos Integrated Wealth
Pennsylvania
$11.3K – – –
ST
339
Smithfield Trust
Pennsylvania
$11K – – –
PS
340
Principal Securities
Iowa
$9.59K – – –
SPIA
341
Steward Partners Investment Advisory
New York
$9K +$5.83K +35 +184%
TWC
342
TD Waterhouse Canada
Ontario, Canada
$8.34K +$8.34K +50 New
IRC
343
Investors Research Corp
Georgia
$8.33K – – –
CYG
344
Clean Yield Group
Vermont
$8.16K – – –
SWM
345
Spire Wealth Management
Virginia
$7.33K – – –
HWM
346
Hemington Wealth Management
Virginia
$7K +$3.02K +19 +76%
FHA
347
First Horizon Advisors
Tennessee
$6.5K – – –
GWSG
348
GPS Wealth Strategies Group
Colorado
$6.16K – – –
FMII
349
Farmers & Merchants Investments Inc
Nebraska
$5.5K +$2.5K +15 +83%
Nisa Investment Advisors
350
Nisa Investment Advisors
Missouri
$5K -$837K -5,022 -99%
12 13
14
15 16