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MASI

Masimo
MASI

Delisted

MASI was delisted on the 9th of June, 2026.

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153 hedge funds and large institutions have $987M invested in Masimo in 2013 Q2 according to their latest regulatory filings, with 153 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

92% less call options, than puts

Call options by funds: $76K | Put options by funds: $970K

Holders
153
Holders Change
+153
Holders Change %
–
% of All Funds
4.99%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
% of All Funds
0.07%
New
153
Increased
–
Reduced
–
Closed
–
Calls
$76K
Puts
$970K
Net Calls
-$894K
Net Calls Change
-$894K

Top Buyers

No buyers this quarter

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Renaissance Technologies
26
Renaissance Technologies
New York
$9.69M +$9.62M +457,200 New
SGA
27
Sector Gamma AS
Norway
$8.18M +$8.12M +385,991 New
AAMU
28
Amundi Asset Management US
Massachusetts
$7.77M +$7.71M +366,400 New
TAM
29
Tiverton Asset Management
Delaware
$7.64M +$7.58M +360,200 New
Norges Bank
30
Norges Bank
Norway
$7.05M +$7M +332,722 New
Deutsche Bank
31
Deutsche Bank
Germany
$7.05M +$7M +332,515 New
RFS
32
Rockefeller Financial Services
New York
$6.9M +$6.85M +325,537 New
MAA
33
Managed Account Advisors
New Jersey
$6.14M +$6.09M +289,635 New
Wells Fargo
34
Wells Fargo
California
$5.68M +$5.63M +267,852 New
HIM
35
Hermes Investment Management
United Kingdom
$5.61M +$5.57M +264,603 New
TCIM
36
TIAA CREF Investment Management
New York
$5.59M +$5.55M +263,812 New
Prudential Financial
37
Prudential Financial
New Jersey
$5.52M +$5.47M +260,239 New
WCM
38
Waterstone Capital Management
Minnesota
$5.46M +$5.42M +257,500 New
BC
39
Broadfin Capital
New York
$5.32M +$5.28M +250,837 New
BIM
40
BlackRock Investment Management
Delaware
$5.14M +$5.1M +242,399 New
Geode Capital Management
41
Geode Capital Management
Massachusetts
$4.96M +$4.92M +233,810 New
EAM
42
Eagle Asset Management
Florida
$4.45M +$4.42M +210,067 New
Citadel Advisors
43
Citadel Advisors
Florida
$4.42M +$4.39M +208,652 New
T. Rowe Price Associates
44
T. Rowe Price Associates
Maryland
$4.21M +$4.18M +198,830 New
VAM
45
Visium Asset Management
New York
$3.81M +$3.78M +179,480 New
Goldman Sachs
46
Goldman Sachs
New York
$3.8M +$3.77M +179,171 New
Millennium Management
47
Millennium Management
New York
$3.75M +$3.73M +177,106 New
New York State Common Retirement Fund
48
New York State Common Retirement Fund
New York
$3.39M +$3.36M +159,950 New
WSFS
49
Wilmington Savings Fund Society
Delaware
$3.13M +$3.1M +147,488 New
AIG
50
American International Group
New York
$2.98M +$2.96M +140,782 New
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MASI Hedge Fund Activity: Q2 2013 in Review

153 of the 3,065 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q2 2013, worth a combined $987M.

Buyers outnumbered sellers: 153 funds opened new MASI positions and 0 closed out — a net gain of 153 holders — while 0 added to existing stakes and 0 trimmed.

  • 153 institutional investors held Masimo (MASI) as of Q2 2013, up from 0 in Q1 2013.
  • Funds reported $987M of Masimo stock for Q2 2013.
  • 153 funds opened new Masimo positions in Q2 2013 and 0 closed out, a net change of +153 holders.

Based on aggregated 13F filings for Q2 2013.