We are live on ! Find out more
MASI

Masimo
MASI

Delisted

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

Back to rankings

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
Charles Schwab
51
Charles Schwab
California
$2.94M +$2.85M +135,383 New
GAM
52
Gotham Asset Management
New York
$2.9M +$2.88M +136,838 New
NC
53
Nicholas Company
Wisconsin
$2.79M +$2.77M +131,815 New
DIA
54
Davidson Investment Advisors
Montana
$2.79M +$2.77M +131,605 New
Principal Financial Group
55
Principal Financial Group
Iowa
$2.69M +$2.67M +127,123 New
Balyasny Asset Management
56
Balyasny Asset Management
Illinois
$2.65M +$2.63M +124,781 New
Boston Partners
57
Boston Partners
Massachusetts
$2.62M +$2.6M +123,685 New
NFA
58
Nationwide Fund Advisors
Ohio
$2.61M +$2.59M +123,215 New
Morgan Stanley
59
Morgan Stanley
New York
$2.57M +$2.55M +121,094 New
Ameriprise
60
Ameriprise
Minnesota
$2.35M +$2.33M +110,971 New
AllianceBernstein
61
AllianceBernstein
Tennessee
$2.31M +$2.29M +109,024 New
HCM
62
Highbridge Capital Management
New York
$2.31M +$2.29M +108,846 New
STB
63
S&T Bank
Pennsylvania
$2.24M +$2.22M +105,455 New
Manulife (Manufacturers Life Insurance)
64
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$2.16M +$2.14M +101,734 New
UBS AM
65
UBS AM
Illinois
$2.08M +$2.07M +98,198 New
RhumbLine Advisers
66
RhumbLine Advisers
Massachusetts
$1.86M +$1.84M +87,692 New
California State Teachers Retirement System (CalSTRS)
67
California State Teachers Retirement System (CalSTRS)
California
$1.8M +$1.79M +84,883 New
MLICM
68
Metropolitan Life Insurance Company (MetLife)
New York
$1.72M +$1.7M +80,957 New
California Public Employees Retirement System
69
California Public Employees Retirement System
California
$1.7M +$1.69M +80,153 New
Bank of America
70
Bank of America
North Carolina
$1.6M +$1.58M +75,265 New
FIM
71
Friedberg Investment Management
Texas
$1.51M +$1.5M +71,070 New
SFM
72
Systematic Financial Management
New Jersey
$1.4M +$1.39M +65,887 New
William Blair & Company
73
William Blair & Company
Illinois
$1.37M +$1.36M +64,830 New
DADC
74
D.A. Davidson & Co
Montana
$1.37M +$1.36M +64,481 New
Retirement Systems of Alabama
75
Retirement Systems of Alabama
Alabama
$1.35M +$1.34M +63,655 New
1 2
3
4 5

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.