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MASI

Masimo
MASI

Delisted

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

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230 hedge funds and large institutions have $1.65B invested in Masimo in 2016 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 82 increasing their positions, 93 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed

604% more call options, than puts

Call options by funds: $2.54M | Put options by funds: $361K

67% more funds holding in top 10

Funds holding in top 10: 3 → 5 (+2)

1% less capital invested

Capital invested by funds: $1.66B → $1.65B (-$14.1M)

3% less funds holding

Funds holding: 236 → 230 (-6)

12% less repeat investments, than reductions

Existing positions increased: 82 | Existing positions reduced: 93

14% less first-time investments, than exits

New positions opened: 25 | Existing positions closed: 29

Holders
230
Holders Change
-6
Holders Change %
-2.54%
% of All Funds
6.13%
Holding in Top 10
5
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+66.67%
% of All Funds
0.13%
New
25
Increased
82
Reduced
93
Closed
29
Calls
$2.54M
Puts
$361K
Net Calls
+$2.18M
Net Calls Change
+$1.82M

Top Buyers

Rank Fund Capital Flow
1
JMPWA
JP Morgan Private Wealth Advisors
California
+$11.4M
2
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$11M
3
RCAMU
Rothschild & Co Asset Management US
Connecticut
+$10.2M
4
CIP
Chartwell Investment Partners
Pennsylvania
+$9.13M
5
Bank of New York Mellon
Bank of New York Mellon
New York
+$8.96M

Top Sellers

Rank Fund Capital Flow
1
CCM
Century Capital Management
Massachusetts
-$16.3M
2
CIP
Champlain Investment Partners
Vermont
-$10.4M
3
BIT
BlackRock Institutional Trust
California
-$9.52M
4
BA
BlackRock Advisors
Delaware
-$7.92M
5
NAP
New Amsterdam Partners
New York
-$7.4M
Name Holding Trade Value Shares
Change 		Change in
Stake
Swiss National Bank
76
Swiss National Bank
Switzerland
$3.28M +$545K +14,500 +22%
BG
77
Bellevue Group
Switzerland
$3.14M +$2.82M +75,000 New
PCMI
78
Paradigm Capital Management Inc
New York
$3.13M -$14.1K -375 -0.5%
Two Sigma Investments
79
Two Sigma Investments
New York
$3.12M +$2.62M +69,609 +1,374%
New York State Common Retirement Fund
80
New York State Common Retirement Fund
New York
$2.84M +$79K +2,100 +3%
Millennium Management
81
Millennium Management
New York
$2.76M -$4.03M -107,054 -62%
TA
82
Teachers Advisors
New York
$2.73M – – –
CCM
83
Century Capital Management
Massachusetts
$2.57M -$16.3M -433,742 -88%
HHC
84
Hutchin Hill Capital
New York
$2.51M +$2.25M +59,900 New
Allianz Asset Management
85
Allianz Asset Management
Germany
$2.5M +$857K +22,794 +62%
Marshall Wace
86
Marshall Wace
United Kingdom
$2.45M +$2.2M +58,609 New
DC
87
Deere & Company
Illinois
$2.45M -$39K -1,038 -2%
Citadel Advisors
88
Citadel Advisors
Florida
$2.42M +$2.15M +57,256 +8,520%
Los Angeles Capital Management
89
Los Angeles Capital Management
California
$2.37M +$15K +400 +0.7%
RhumbLine Advisers
90
RhumbLine Advisers
Massachusetts
$2.33M +$39.5K +1,050 +2%
SEI Investments
91
SEI Investments
Pennsylvania
$2.29M +$1.65M +43,775 +399%
CAM
92
ClariVest Asset Management
California
$2.25M +$80.9K +2,150 +4%
TC
93
TFS Capital
Pennsylvania
$2.13M +$1.18M +31,247 +158%
SIM
94
Spark Investment Management
New York
$2.09M +$1.88M +50,000 New
GC
95
Guggenheim Capital
Illinois
$2.02M -$1.85M -49,216 -50%
EAM
96
Eagle Asset Management
Florida
$2.02M -$664K -17,642 -27%
Comerica Bank
97
Comerica Bank
Texas
$1.94M -$23.4K -623 -1%
DCM
98
DAFNA Capital Management
California
$1.93M – – –
PP
99
Paloma Partners
Connecticut
$1.83M +$533K +14,165 +48%
Federated Hermes
100
Federated Hermes
Pennsylvania
$1.83M -$849K -22,570 -34%
2 3
4
5 6

MASI Hedge Fund Activity: Q1 2016 in Review

230 of the 3,754 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q1 2016, worth a combined $1.65B — down 0.85% from $1.66B a quarter earlier.

Sellers outnumbered buyers: 29 funds closed out of MASI and 25 opened new positions — a net loss of 4 holders — while 93 trimmed existing stakes and 82 added.

The largest buyer was JP Morgan Private Wealth Advisors, opening a new position worth an estimated $11.4M. The largest seller was Century Capital Management, cutting an estimated $16.3M.

  • 230 institutional investors held Masimo (MASI) as of Q1 2016, down from 236 in Q4 2015.
  • Funds reported $1.65B of Masimo stock for Q1 2016, down 0.85% quarter-over-quarter.
  • 25 funds opened new Masimo positions in Q1 2016 and 29 closed out, a net change of -4 holders.
  • The largest Masimo buyer in Q1 2016 was JP Morgan Private Wealth Advisors, an estimated $11.4M added.
  • The largest Masimo seller in Q1 2016 was Century Capital Management, an estimated $16.3M sold.

Based on aggregated 13F filings for Q1 2016.