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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
BA
101
BlackRock Advisors
Delaware
$622K +$618K +29,353 New
MWNA
102
Marshall Wace North America
New York
$621K +$616K +29,285 New
MC
103
Menta Capital
California
$612K +$607K +28,875 New
First Trust Advisors
104
First Trust Advisors
Illinois
$603K +$598K +28,427 New
Susquehanna International Group
105
Susquehanna International Group
Pennsylvania
$602K +$597K +28,400 New
GCP
106
GSA Capital Partners
United Kingdom
$547K +$543K +25,800 New
SOMRS
107
State of Michigan Retirement System
Michigan
$500K +$496K +23,600 New
DT
108
Diversified Trust
Tennessee
$489K +$485K +23,050 New
N
109
Nuveen
North Carolina
$474K +$471K +22,379 New
Nomura Holdings
110
Nomura Holdings
Japan
$455K +$452K +21,472 New
LMGAM
111
Liberty Mutual Group Asset Management
Massachusetts
$450K +$447K +21,239 New
Brown Advisory
112
Brown Advisory
Maryland
$437K +$434K +20,634 New
MSA
113
Mason Street Advisors
Wisconsin
$426K +$423K +20,110 New
AL
114
Airain Ltd
Guernsey
$413K +$410K +19,504 New
B
115
Baird
Wisconsin
$407K +$404K +19,192 New
MAM
116
Martingale Asset Management
Massachusetts
$374K +$370K +17,600 New
DCM
117
DAFNA Capital Management
California
$371K +$368K +17,500 New
Public Employees Retirement Association of Colorado
118
Public Employees Retirement Association of Colorado
Colorado
$368K +$365K +17,340 New
BNP Paribas Financial Markets
119
BNP Paribas Financial Markets
France
$360K +$357K +16,967 New
RFC
120
Russell Frank Company
Washington
$356K +$353K +16,793 New
PNC Financial Services Group
121
PNC Financial Services Group
Pennsylvania
$331K +$327K +15,553 New
NTCOC
122
Northern Trust Company of Connecticut
Connecticut
$310K +$307K +14,610 New
SB
123
Suntrust Banks
Georgia
$308K +$308K +14,648 New
QI
124
Quotient Investors
New York
$307K +$305K +14,500 New
Wellington Management Group
125
Wellington Management Group
Massachusetts
$299K +$297K +14,100 New
3 4
5
6 7

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.