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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
PPA
76
Parametric Portfolio Associates
Washington
$1.31M +$1.3M +62,016 New
New York State Teachers Retirement System (NYSTRS)
77
New York State Teachers Retirement System (NYSTRS)
New York
$1.28M +$1.27M +60,436 New
TPSF
78
Texas Permanent School Fund
Texas
$1.22M +$1.21M +57,554 New
State Board of Administration of Florida Retirement System
79
State Board of Administration of Florida Retirement System
Florida
$1.15M +$1.14M +54,195 New
SO
80
STRS Ohio
Ohio
$1.12M +$1.11M +52,900 New
Swiss National Bank
81
Swiss National Bank
Switzerland
$1.08M +$1.07M +51,000 New
GF
82
Gabelli Funds
New York
$1.06M +$1.05M +50,000 New
LCM
83
Leonard Capital Management
Florida
$1.03M +$1.02M +48,701 New
CS
84
Credit Suisse
Switzerland
$1.03M +$1.02M +48,626 New
Citigroup
85
Citigroup
New York
$947K +$939K +44,640 New
PGCM
86
Prescott Group Capital Management
Oklahoma
$888K +$881K +41,900 New
American Century Companies
87
American Century Companies
Missouri
$866K +$859K +40,850 New
Jacobs Levy Equity Management
88
Jacobs Levy Equity Management
New Jersey
$850K +$844K +40,100 New
ASRS
89
Arizona State Retirement System
Arizona
$834K +$828K +39,361 New
Comerica Bank
90
Comerica Bank
Texas
$829K +$822K +39,092 New
SCM
91
Stonebridge Capital Management
California
$784K +$778K +36,995 New
KIA
92
Kopp Investment Advisors
Minnesota
$779K +$773K +36,764 New
ProShare Advisors
93
ProShare Advisors
Maryland
$771K +$765K +36,380 New
JP Morgan Chase
94
JP Morgan Chase
New York
$759K +$753K +35,797 New
MCM
95
Matarin Capital Management
New York
$712K +$707K +33,604 New
D.E. Shaw & Co
96
D.E. Shaw & Co
New York
$689K +$684K +32,511 New
BG
97
BlackRock Group
United Kingdom
$677K +$672K +31,922 New
SIM
98
Spark Investment Management
New York
$647K +$644K +30,600 New
MOACM
99
Mutual of America Capital Management
New York
$642K +$638K +30,306 New
Federated Hermes
100
Federated Hermes
Pennsylvania
$629K +$624K +29,673 New
2 3
4
5 6

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.