201 hedge funds and large institutions have $1.59B invested in Masimo in 2015 Q2 according to their latest regulatory filings, with 42 funds opening new positions, 55 increasing their positions, 75 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
201
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$2.63M
Puts
$1.37M
Net Calls
Net Calls Change

Top Buyers

1 +$29M
2 +$23.2M
3 +$9.4M
4
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$4.18M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$4.1M
Name Holding Trade Value Shares
Change
Change in
Stake
126
$581K
127
$556K
128
$548K
129
$545K
130
$527K
131
$517K
132
$515K
133
$511K
134
$484K
135
$476K
136
$474K
137
$452K
138
$430K
139
$415K
140
$397K
141
$376K
142
$373K
143
$365K
144
$357K
145
$354K
146
$346K
147
$341K
148
$308K
149
$291K
150
$254K