MASI icon

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 %
First Trust Advisors
51
First Trust Advisors
Illinois
$16.8M 99,612 -45,552 -31%
CRM
52
Cramer Rosenthal McGlynn
Connecticut
$16M 94,939 -56,725 -37%
PHS
53
PFM Health Sciences
California
$15.9M 94,451 +94,451 New
EAM
54
Erste Asset Management
Austria
$15.5M 92,000 – –
BG
55
Bellevue Group
Switzerland
$15.1M 89,673 +19,865 +28%
Swiss National Bank
56
Swiss National Bank
Switzerland
$14.8M 87,700 -500 -0.6%
BDLIB
57
Banque de Luxembourg Investments (BLI)
Luxembourg
$14.6M 86,700 -14,500 -14%
GI
58
GAMCO Investors
Connecticut
$14.2M 84,500 – –
GLA
59
Great Lakes Advisors
Illinois
$13.9M 82,348 -10,524 -11%
Squarepoint
60
Squarepoint
New York
$12.5M 74,027 +57,359 +344%
Swedbank
61
Swedbank
Sweden
$12.4M 73,800 -2,100 -3%
California Public Employees Retirement System
62
California Public Employees Retirement System
California
$12.2M 72,807 +2,932 +4%
PD
63
Point72 (DIFC)
United Arab Emirates
$11.6M 68,700 +27,061 +65%
BNP Paribas Asset Management
64
BNP Paribas Asset Management
France
$11.1M 65,821 +65,821 New
Manulife (Manufacturers Life Insurance)
65
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$9.88M 58,714 +4,814 +9%
Fidelity International
66
Fidelity International
Bermuda
$9.48M 56,326 -113,462 -67%
Barclays
67
Barclays
United Kingdom
$9.44M 56,114 +16,261 +41%
SO
68
STRS Ohio
Ohio
$9.42M 55,983 +15,848 +39%
Retirement Systems of Alabama
69
Retirement Systems of Alabama
Alabama
$9.25M 55,003 +916 +2%
Bank of Nova Scotia
70
Bank of Nova Scotia
Ontario, Canada
$8.93M 53,108 -40,095 -43%
AQR Capital Management
71
AQR Capital Management
Connecticut
$8.45M 50,256 +42,114 +517%
Citigroup
72
Citigroup
New York
$8.4M 49,962 -2,196 -4%
CCM
73
Cinctive Capital Management
New York
$7.87M 46,787 +46,787 New
N
74
Natixis
France
$7.68M 45,648 +45,648 New
4A
75
4D Advisors
California
$7.57M 45,000 +15,000 +50%
1 2
3
4 5