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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 %
TE
201
Tema ETFs
New York
$757K -$839K -5,037 -53%
QIM
202
Quantitative Investment Management
Virginia
$743K -$79.9K -480 -10%
Assenagon Asset Management
203
Assenagon Asset Management
Luxembourg
$730K -$35.3M -211,672 -98%
US Bancorp
204
US Bancorp
Minnesota
$721K +$7.66K +46 +1%
PAG
205
Private Advisor Group
New Jersey
$709K -$833 -5 -0.1%
SW
206
SteelPeak Wealth
California
$678K -$5.83K -35 -0.9%
QCG
207
Quadrant Capital Group
Ohio
$674K +$440K +2,640 +188%
Mitsubishi UFJ Asset Management
208
Mitsubishi UFJ Asset Management
Japan
$673K +$19.2K +115 +3%
PI
209
PineBridge Investments
New York
$659K +$659K +3,954 New
HFM
210
Harvest Fund Management
China
$654K +$6.33K +38 +1%
Kovitz Investment Group Partners
211
Kovitz Investment Group Partners
Illinois
$652K +$4K +24 +0.6%
VI
212
Vestcor Inc
New Brunswick, Canada
$637K +$637K +3,825 New
SC
213
SummitTX Capital
Texas
$629K +$629K +3,773 New
VCP
214
Verus Capital Partners
Arizona
$608K – – –
I
215
InceptionR
California
$597K +$132K +791 +28%
ETC
216
Exchange Traded Concepts
Oklahoma
$590K -$1.17M -7,013 -66%
SAM
217
Securian Asset Management
Minnesota
$572K +$16.7K +100 +3%
OFG
218
Oxford Financial Group
Indiana
$571K – – –
OAM
219
Oppenheimer Asset Management
New York
$552K -$209K -1,252 -27%
VAS
220
Vestmark Advisory Solutions
Massachusetts
$545K +$31.5K +189 +6%
Truist Financial
221
Truist Financial
North Carolina
$533K -$31.2K -187 -6%
Prudential Financial
222
Prudential Financial
New Jersey
$531K +$123K +739 +30%
CGH
223
Crossmark Global Holdings
Texas
$529K +$2.17K +13 +0.4%
Lido Advisors
224
Lido Advisors
California
$521K -$38.2K -229 -7%
AWM
225
Avior Wealth Management
Nebraska
$496K -$49.8K -299 -9%
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