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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 %
GWSG
326
GPS Wealth Strategies Group
Colorado
$6.22K 37 – –
FMII
327
Farmers & Merchants Investments Inc
Nebraska
$6.06K 36 +3 +9%
HWM
328
Hemington Wealth Management
Virginia
$6K 38 -6 -14%
SPIA
329
Steward Partners Investment Advisory
New York
$5.89K 35 -19 -35%
Nisa Investment Advisors
330
Nisa Investment Advisors
Missouri
$5.72K 34 +4 +13%
LFG
331
Larson Financial Group
Missouri
$5.55K 33 +11 +50%
IWM
332
Inlight Wealth Management
Georgia
$5.05K 30 – –
BIA
333
Bell Investment Advisors
California
$4.88K 29 +12 +71%
VWM
334
Valley Wealth Managers
New Jersey
$4.37K 26 – –
S
335
Sachetta
Massachusetts
$3.87K 23 – –
JWA
336
JFS Wealth Advisors
Pennsylvania
$3.37K 20 -3 -13%
W
337
WealthCollab
Washington
$3.37K 20 – –
AG
338
AmeriFlex Group
Nevada
$3.33K 20 – –
BBHC
339
Brown Brothers Harriman & Co
New York
$2.86K 17 +17 New
KIM
340
Kestra Investment Management
Texas
$2.68K 16 +9 +129%
PWMG
341
Private Wealth Management Group
New Jersey
$2.52K 15 -9 -38%
JSAM
342
J. Safra Asset Management
New York
$2.52K 15 – –
WA
343
WPG Advisers
Maryland
$2.52K 15 – –
WA
344
Whipplewood Advisors
Colorado
$2.36K 14 +14 New
ATC
345
Adirondack Trust Company
New York
$2.02K 12 – –
FFO
346
Fortitude Family Office
Arizona
$1.85K 11 +11 New
HI
347
Harbour Investments
Wisconsin
$1.51K 9 -10 -53%
DPW
348
DiNuzzo Private Wealth
Pennsylvania
$1.01K 6 – –
CFD
349
Creative Financial Designs
Indiana
$841 5 – –
Kayne Anderson Rudnick Investment Management
350
Kayne Anderson Rudnick Investment Management
California
$841 5 – –
12 13
14
15 16