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Masimo
MASI

Overview Fund Activity

362 hedge funds and large institutions have $8.5B invested in Masimo in 2024 Q4 according to their latest regulatory filings, with 63 funds opening new positions, 117 increasing their positions, 115 reducing their positions, and 50 closing their positions.

Holders
362
Holders Change
+5
Holders Change %
+1.4%
% of All Funds
4.82%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.05%
New
63
Increased
117
Reduced
115
Closed
50
Calls
$21.3M
Puts
$12.6M
Net Calls
+$8.76M
Net Calls Change
-$29M

Top Buyers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$1.34B
2
Capital Research Global Investors
2
Capital Research Global Investors
California
$406M
3
Massachusetts Financial Services
3
Massachusetts Financial Services
Massachusetts
$287M
4
AllianceBernstein
4
AllianceBernstein
Tennessee
$157M
5
Millennium Management
5
Millennium Management
New York
$67.5M

Top Sellers

1
AMG
1
Ace Management Global
Brazil
$7.88M
2
FCM
2
Farallon Capital Management
California
$65.6M
3
RI
3
RTW Investments
New York
$113M
4
Westfield Capital Management
4
Westfield Capital Management
Massachusetts
$127M
5
Man Group
5
Man Group
United Kingdom
$10.7M
Name Market Value Shares Shares
Change 		Shares
Change %
XT
376
XTX Topco
Cayman Islands
– – -17,157 Closed
BHCM
377
Brevan Howard Capital Management
Jersey
– – -15,456 Closed
AC
378
AXQ Capital
New Jersey
– – -11,133 Closed
TCM
379
Teza Capital Management
Illinois
– – -10,919 Closed
EP
380
Edgestream Partners
New Jersey
– – -10,449 Closed
SC
381
Shay Capital
New York
– – -10,150 Closed
EGM
382
Engineers Gate Manager
New York
– – -9,980 Closed
VI
383
Versor Investments
New York
– – -9,591 Closed
GCP
384
GSA Capital Partners
United Kingdom
– – -8,230 Closed
LOAMU
385
Lombard Odier Asset Management (USA)
New York
– – -7,171 Closed
Acadian Asset Management
386
Acadian Asset Management
Massachusetts
– – -7,169 Closed
Susquehanna International Group
387
Susquehanna International Group
Pennsylvania
– – -5,668 Closed
CC
388
Centiva Capital
New York
– – -5,087 Closed
GCM
389
Graham Capital Management
Connecticut
– – -4,483 Closed
ACM
390
ADAR1 Capital Management
Texas
– – -3,894 Closed
YIH
391
Y-Intercept (HK)
Hong Kong
– – -3,893 Closed
II
392
Inspire Investing
Idaho
– – -2,964 Closed
A
393
AlphaQuest
New York
– – -2,115 Closed
Tudor Investment Corp
394
Tudor Investment Corp
Connecticut
– – -1,965 Closed
KI
395
Kapitalo Investimentos
Brazil
– – -1,815 Closed
Stifel Financial
396
Stifel Financial
Missouri
– – -1,716 Closed
QCM
397
Qsemble Capital Management
New York
– – -1,617 Closed
Cambridge Investment Research Advisors
398
Cambridge Investment Research Advisors
Iowa
– – -1,542 Closed
CAM
399
Cresset Asset Management
Illinois
– – -1,528 Closed
RAM
400
Resona Asset Management
Japan
– – -987 Closed
13 14 15
16
17