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Masimo
MASI

Overview Fund Activity

373 hedge funds and large institutions have $9.67B invested in Masimo in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 126 increasing their positions, 136 reducing their positions, and 58 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
373
Holders Change
-19
Holders Change %
-4.85%
% of All Funds
5%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
43
Increased
126
Reduced
136
Closed
58
Calls
$10.1M
Puts
$3.87M
Net Calls
+$6.21M
Net Calls Change
+$4.58M

Top Buyers

1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$139M
2
Viking Global Investors
Viking Global Investors
Connecticut
+$129M
3
BlackRock
BlackRock
New York
+$107M
4
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$85.7M
5
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$84.5M

Top Sellers

1
Artisan Partners
Artisan Partners
Wisconsin
-$49.8M
2
Point72 Asset Management
Point72 Asset Management
Connecticut
-$49M
3
Capital Research Global Investors
Capital Research Global Investors
California
-$33.7M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$30.3M
5
Millennium Management
Millennium Management
New York
-$22M
Name Holding Trade Value Shares
Change 		Shares
Change %
Carson Wealth (CWM LLC)
276
Carson Wealth (CWM LLC)
Nebraska
$157K -$36.9K -219 -19%
Osaic Holdings
277
Osaic Holdings
Arizona
$135K -$23.2K -140 -15%
GI
278
GAMMA Investing
California
$119K -$5.05K -30 -4%
CI Investments Inc
279
CI Investments Inc
Ontario, Canada
$118K -$5.05K -30 -4%
HIA
280
Harbor Investment Advisory
Maryland
$101K -$62.2K -370 -38%
CMBA
281
C.M. Bidwell & Associates
Hawaii
$100K – – –
Fifth Third Bancorp
282
Fifth Third Bancorp
Ohio
$98.2K -$10.8K -64 -10%
QT
283
Quantbot Technologies
New York
$85.6K +$85.6K +509 New
UB
284
UMB Bank
Missouri
$69.5K -$5.72K -34 -8%
CA
285
Clearstead Advisors
Ohio
$66.8K +$66.8K +397 New
AF
286
Allworth Financial
California
$65.1K +$27.4K +163 +73%
S
287
SignatureFD
Georgia
$64.6K -$5.72K -34 -8%
NS
288
NBC Securities
Alabama
$61K – – –
DFA
289
DHJJ Financial Advisors
Illinois
$60.6K – – –
Jones Financial Companies
290
Jones Financial Companies
Missouri
$59.5K +$3.2K +19 +6%
BTI
291
Blue Trust Inc
Georgia
$57.2K +$5.72K +34 +11%
PA
292
Parallel Advisors
California
$50K -$16.8K -100 -25%
SS
293
SBI Securities
Japan
$46.1K -$841 -5 -2%
IA
294
IFP Advisors
Florida
$44.2K -$4.66K -4 Closed
MPWT
295
MassMutual Private Wealth & Trust
Connecticut
$44.2K +$3.7K +22 +9%
HNB
296
Hilltop National Bank
Wyoming
$36.7K +$36.7K +218 New
FFA
297
Farther Finance Advisors
California
$34.5K -$168 -1 -0.5%
MCM
298
MAI Capital Management
Ohio
$34K +$21.7K +129 +177%
EWA
299
EverSource Wealth Advisors
Alabama
$31.6K -$5.55K -33 -15%
BIG
300
Brooklyn Investment Group
New York
$31.5K +$12.6K +75 +67%
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