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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 %
GI
276
GAMMA Investing
California
$119K 708 -30 -4%
CI Investments Inc
277
CI Investments Inc
Ontario, Canada
$118K 701 -30 -4%
HIA
278
Harbor Investment Advisory
Maryland
$101K 600 -370 -38%
Fifth Third Bancorp
279
Fifth Third Bancorp
Ohio
$98.2K 584 -64 -10%
QT
280
Quantbot Technologies
New York
$85.6K 509 +509 New
UB
281
UMB Bank
Missouri
$69.5K 413 -34 -8%
CA
282
Clearstead Advisors
Ohio
$66.8K 397 +397 New
AF
283
Allworth Financial
California
$65.1K 387 +163 +73%
S
284
SignatureFD
Georgia
$64.6K 384 -34 -8%
NS
285
NBC Securities
Alabama
$61K 368 – –
DFA
286
DHJJ Financial Advisors
Illinois
$60.6K 360 – –
Jones Financial Companies
287
Jones Financial Companies
Missouri
$59.5K 354 +19 +6%
BTI
288
Blue Trust Inc
Georgia
$57.2K 340 +34 +11%
PA
289
Parallel Advisors
California
$50K 297 -100 -25%
SS
290
SBI Securities
Japan
$46.1K 274 -5 -2%
IA
291
IFP Advisors
Florida
– – -4 Closed
MPWT
292
MassMutual Private Wealth & Trust
Connecticut
$44.2K 263 +22 +9%
HNB
293
Hilltop National Bank
Wyoming
$36.7K 218 +218 New
FFA
294
Farther Finance Advisors
California
$34.5K 205 -1 -0.5%
MCM
295
MAI Capital Management
Ohio
$34K 202 +129 +177%
EWA
296
EverSource Wealth Advisors
Alabama
$31.6K 188 -33 -15%
BIG
297
Brooklyn Investment Group
New York
$31.5K 187 +75 +67%
SAM
298
Smartleaf Asset Management
Massachusetts
$28.6K 170 -88 -34%
AAP
299
Arax Advisory Partners
Colorado
$27.4K 163 +53 +48%
Northwestern Mutual Wealth Management
300
Northwestern Mutual Wealth Management
Wisconsin
$25.6K 152 – –
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