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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 %
BlackRock
1
BlackRock
New York
$1.44B 8,698,213 -124,056 -1%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$1.34B 8,097,454 +1,340,836 +20%
PCM
3
Politan Capital Management
New York
$779M 4,714,746 – –
Vanguard Group
4
Vanguard Group
Pennsylvania
$758M 4,586,702 +66,215 +1%
Capital Research Global Investors
5
Capital Research Global Investors
California
$406M 2,454,975 +1,094,647 +80%
Massachusetts Financial Services
6
Massachusetts Financial Services
Massachusetts
$287M 1,735,167 +943,001 +119%
T. Rowe Price Investment Management
7
T. Rowe Price Investment Management
Maryland
$275M 1,662,376 +135,888 +9%
State Street
8
State Street
Massachusetts
$242M 1,463,466 +24,652 +2%
AllianceBernstein
9
AllianceBernstein
Tennessee
$157M 947,391 +878,587 +1,277%
Holocene Advisors
10
Holocene Advisors
New York
$138M 835,660 -39,499 -5%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$132M 801,125 +8,239 +1%
LIP
12
Liontrust Investment Partners
United Kingdom
$131M 792,935 -15,758 -2%
Westfield Capital Management
13
Westfield Capital Management
Massachusetts
$127M 768,858 -625,198 -45%
Morgan Stanley
14
Morgan Stanley
New York
$122M 737,841 +985 +0.1%
RI
15
RTW Investments
New York
$113M 683,294 -779,106 -53%
Dimensional Fund Advisors
16
Dimensional Fund Advisors
Texas
$107M 647,720 +50,022 +8%
Alyeska Investment Group
17
Alyeska Investment Group
Illinois
$95.6M 578,635 -166,492 -22%
Schroder Investment Management Group
18
Schroder Investment Management Group
United Kingdom
$95.5M 566,469 -166,152 -23%
Citadel Advisors
19
Citadel Advisors
Florida
$72.9M 441,025 +251,476 +133%
Millennium Management
20
Millennium Management
New York
$67.5M 408,058 +378,805 +1,295%
FCM
21
Farallon Capital Management
California
$65.6M 397,000 -861,563 -68%
Northern Trust
22
Northern Trust
Illinois
$63.5M 383,869 +82,828 +28%
Charles Schwab
23
Charles Schwab
California
$62.5M 377,836 +7,808 +2%
Sumitomo Mitsui Trust Group
24
Sumitomo Mitsui Trust Group
Japan
$61.8M 373,705 +1,522 +0.4%
Corient Private Wealth
25
Corient Private Wealth
Florida
$57.5M 347,683 +343,797 +8,847%
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