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iRhythm Technologies
IRTC

Overview Fund Activity

141 hedge funds and large institutions have $1.52B invested in iRhythm Technologies in 2018 Q1 according to their latest regulatory filings, with 34 funds opening new positions, 43 increasing their positions, 47 reducing their positions, and 10 closing their positions.

Holders
141
Holders Change
+23
Holders Change %
+19.49%
% of All Funds
3.24%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.05%
New
34
Increased
43
Reduced
47
Closed
10
Calls
$4.21M
Puts
$1.7M
Net Calls
+$2.51M
Net Calls Change
+$3.85M

Top Buyers

1
Ameriprise
1
Ameriprise
Minnesota
$47.6M
2
BCM
2
Brown Capital Management
Maryland
$42.9M
3
Wells Fargo
3
Wells Fargo
California
$43.9M
4
PC
4
Polar Capital
United Kingdom
$20.3M
5
Millennium Management
5
Millennium Management
New York
$39.1M

Top Sellers

1
Citadel Advisors
1
Citadel Advisors
Florida
$10.6M
2
NLVP
2
New Leaf Venture Partners
New York
$0
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$119M
4
Bank of New York Mellon
4
Bank of New York Mellon
New York
$41.2M
5
Adage Capital Partners
5
Adage Capital Partners
Massachusetts
$9.35M
Name Holding Trade Value Shares
Change 		Shares
Change %
California State Teachers Retirement System (CalSTRS)
76
California State Teachers Retirement System (CalSTRS)
California
$1.37M -$48K -762 -3%
CS
77
Credit Suisse
Switzerland
$1.36M +$620K +9,844 +84%
WMSA
78
Weiss Multi-Strategy Advisers
New York
$1.34M -$50.4K -800 -4%
CCP
79
Clough Capital Partners
Massachusetts
$1.28M -$409K -6,500 -24%
Lazard Asset Management
80
Lazard Asset Management
New York
$1.18M -$491K -7,800 -29%
Nuveen Asset Management
81
Nuveen Asset Management
Illinois
$1.1M +$1.1M +17,514 New
Neuberger Berman Group
82
Neuberger Berman Group
New York
$1.1M +$1.1M +17,500 New
Swiss National Bank
83
Swiss National Bank
Switzerland
$995K +$63K +1,000 +7%
SAM
84
Shell Asset Management
Netherlands
$948K – – –
WG
85
Winton Group
United Kingdom
$886K +$886K +14,071 New
RhumbLine Advisers
86
RhumbLine Advisers
Massachusetts
$860K +$7.68K +122 +0.9%
TI
87
Trexquant Investment
Connecticut
$774K +$513K +8,155 +197%
EMG
88
Ellington Management Group
Connecticut
$762K +$762K +12,100 New
Barclays
89
Barclays
United Kingdom
$735K +$735K +11,681 New
SIA
90
Sit Investment Associates
Minnesota
$711K +$711K +11,300 New
Wolverine Trading
91
Wolverine Trading
Illinois
$695K +$695K +11,043 New
Macquarie Group
92
Macquarie Group
Australia
$683K – – –
Manulife (Manufacturers Life Insurance)
93
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$681K -$22K -350 -3%
ARTA
94
A.R.T. Advisors
New York
$656K +$656K +10,421 New
PP
95
Paloma Partners
Connecticut
$640K -$448K -7,123 -41%
UBS Group
96
UBS Group
Switzerland
$621K -$68.1K -1,082 -10%
AIG
97
American International Group
New York
$574K -$30.9K -491 -5%
Squarepoint
98
Squarepoint
New York
$564K -$407K -6,461 -42%
AG
99
Aperio Group
California
$542K -$51.3K -815 -9%
DTL
100
Dynamic Technology Lab
Singapore
$509K +$509K +8,084 New
2 3
4
5 6