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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
4.95%
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 %
MML Investors Services
251
MML Investors Services
Massachusetts
$264K 1,569 -626 -29%
AssetMark Inc
252
AssetMark Inc
California
$259K 1,539 +73 +5%
QCM
253
Qsemble Capital Management
New York
$257K 1,525 +1,525 New
TRCT
254
Tower Research Capital (TRC)
New York
$255K 1,516 +166 +12%
CI
255
Corient IA
Florida
$252K 1,500 – –
Mercer Global Advisors
256
Mercer Global Advisors
Colorado
$248K 1,472 +1,472 New
FTWA
257
Fifth Third Wealth Advisors
Ohio
$246K 1,465 +5 +0.3%
AW
258
Apricus Wealth
South Carolina
$246K 1,462 – –
ACM
259
Andina Capital Management
Utah
$239K 1,420 +1,420 New
KCP
260
Kera Capital Partners
California
$232K 1,380 +1,380 New
KP
261
Keel Point
Alabama
$225K 1,336 -29 -2%
P
262
Pitcairn
Pennsylvania
$222K 1,320 -305 -19%
ZIM
263
Zacks Investment Management
Illinois
$217K 1,290 -26,517 -95%
Vontobel Holding
264
Vontobel Holding
Switzerland
$216K 1,282 -111 -8%
FFM
265
Forum Financial Management
Illinois
$213K 1,266 -50 -4%
KBC Group
266
KBC Group
Belgium
$212K 1,258 -847 -40%
BP
267
Ballentine Partners
Massachusetts
$211K 1,255 +19 +2%
CIS
268
Custom Index Systems
New York
$210K 1,246 +16 +1%
GT
269
Greenleaf Trust
Michigan
$205K 1,217 -97 -7%
KIA
270
Knollwood Investment Advisory
Maryland
$202K 1,200 +1,200 New
HWM
271
HB Wealth Management
Georgia
$201K 1,193 -77 -6%
WT
272
Whittier Trust
California
$191K 1,134 -23 -2%
UCB
273
United Community Bank
South Carolina
$159K 946 +5 +0.5%
Carson Wealth (CWM LLC)
274
Carson Wealth (CWM LLC)
Nebraska
$157K 931 -219 -19%
Osaic Holdings
275
Osaic Holdings
Arizona
$135K 814 -140 -15%
9 10
11
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