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MASI

Masimo
MASI

Delisted

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

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221 hedge funds and large institutions have $1.56B invested in Masimo in 2015 Q3 according to their latest regulatory filings, with 37 funds opening new positions, 80 increasing their positions, 83 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed

147% more first-time investments, than exits

New positions opened: 37 | Existing positions closed: 15

59% more call options, than puts

Call options by funds: $3.16M | Put options by funds: $1.99M

10% more funds holding

Funds holding: 201 → 221 (+20)

0% more funds holding in top 10

Funds holding in top 10: 3 → 3 (0)

1% less capital invested

Capital invested by funds: $1.59B → $1.56B (-$20.9M)

4% less repeat investments, than reductions

Existing positions increased: 80 | Existing positions reduced: 83

Holders
221
Holders Change
+20
Holders Change %
+9.95%
% of All Funds
6.17%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.08%
New
37
Increased
80
Reduced
83
Closed
15
Calls
$3.16M
Puts
$1.99M
Net Calls
+$1.17M
Net Calls Change
-$87K

Top Buyers

Rank Fund Capital Flow
1
BIT
BlackRock Institutional Trust
California
+$27.4M
2
BC
Broadfin Capital
New York
+$17.2M
3
BA
BlackRock Advisors
Delaware
+$14.8M
4
Bank of America
Bank of America
North Carolina
+$10.1M
5
BIM
Bogle Investment Management
Massachusetts
+$8.25M

Top Sellers

Rank Fund Capital Flow
1
JHIU
Janus Henderson Investors US
Colorado
-$55.2M
2
CCM
Camber Capital Management
Massachusetts
-$36.8M
3
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
-$16.5M
4
Westfield Capital Management
Westfield Capital Management
Massachusetts
-$10M
5
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management
California
-$7.76M
Name Holding Trade Value Shares
Change 		Change in
Stake
CCMH
76
Cornerstone Capital Management Holdings
New York
$2.56M +$32.7K +800 +1%
TA
77
Teachers Advisors
New York
$2.52M – – –
New York State Common Retirement Fund
78
New York State Common Retirement Fund
New York
$2.49M -$3.6M -87,983 -58%
Susquehanna International Group
79
Susquehanna International Group
Pennsylvania
$2.43M -$1.37M -33,645 -35%
JIM
80
Jupiter Investment Management
United Kingdom
$2.35M +$1.58M +38,610 +172%
DC
81
Deere & Company
Illinois
$2.33M +$2.47M +60,379 New
CSS
82
Cubist Systematic Strategies
Connecticut
$2.32M +$1.88M +46,101 +328%
Robeco Institutional Asset Management
83
Robeco Institutional Asset Management
Netherlands
$2.19M +$2.32M +56,873 New
Los Angeles Capital Management
84
Los Angeles Capital Management
California
$2.17M +$36K +880 +2%
CAM
85
ClariVest Asset Management
California
$2.03M +$2.16M +52,765 New
PP
86
PDT Partners
New York
$1.98M +$182K +4,449 +9%
RhumbLine Advisers
87
RhumbLine Advisers
Massachusetts
$1.96M +$52.2K +1,277 +3%
Federated Hermes
88
Federated Hermes
Pennsylvania
$1.96M +$2.07M +50,748 New
Public Sector Pension Investment Board (PSP Investments)
89
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$1.95M -$936K -22,900 -31%
EGM
90
Engineers Gate Manager
New York
$1.8M +$1.9M +46,574 New
Comerica Bank
91
Comerica Bank
Texas
$1.79M -$2.03M -49,675 -52%
DCM
92
DAFNA Capital Management
California
$1.77M – – –
DIA
93
Davidson Investment Advisors
Montana
$1.72M -$1.15M -28,090 -39%
CS
94
Credit Suisse
Switzerland
$1.68M -$677K -16,557 -28%
State Board of Administration of Florida Retirement System
95
State Board of Administration of Florida Retirement System
Florida
$1.62M – – –
AQR Capital Management
96
AQR Capital Management
Connecticut
$1.6M +$611K +14,942 +56%
GC
97
Guggenheim Capital
Illinois
$1.53M -$505K -12,356 -24%
RFC
98
Russell Frank Company
Washington
$1.5M -$482K -11,801 -23%
TPSF
99
Texas Permanent School Fund
Texas
$1.46M -$103K -2,517 -6%
AP
100
AHL Partners
United Kingdom
$1.44M +$1.05M +25,609 +219%
2 3
4
5 6

MASI Hedge Fund Activity: Q3 2015 in Review

221 of the 3,583 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q3 2015, worth a combined $1.56B — down 1.3% from $1.59B a quarter earlier.

Buyers outnumbered sellers: 37 funds opened new MASI positions and 15 closed out — a net gain of 22 holders — while 80 added to existing stakes and 83 trimmed.

The largest buyer was BlackRock Institutional Trust, adding an estimated $27.4M. The largest seller was Janus Henderson Investors US, cutting an estimated $55.2M.

  • 221 institutional investors held Masimo (MASI) as of Q3 2015, up from 201 in Q2 2015.
  • Funds reported $1.56B of Masimo stock for Q3 2015, down 1.3% quarter-over-quarter.
  • 37 funds opened new Masimo positions in Q3 2015 and 15 closed out, a net change of +22 holders.
  • The largest Masimo buyer in Q3 2015 was BlackRock Institutional Trust, an estimated $27.4M added.
  • The largest Masimo seller in Q3 2015 was Janus Henderson Investors US, an estimated $55.2M sold.

Based on aggregated 13F filings for Q3 2015.