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iRhythm Holdings

141 hedge funds and large institutions have $1.52B invested in iRhythm Holdings 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.

New
Increased
Maintained
Reduced
Closed

240% more first-time investments, than exits

New positions opened: 34 | Existing positions closed: 10

147% more call options, than puts

Call options by funds: $4.21M | Put options by funds: $1.7M

19% more funds holding

Funds holding: 118141 (+23)

17% more capital invested

Capital invested by funds: $1.3B → $1.52B (+$221M)

2.11% more ownership

Funds ownership: 100.73%102.84% (+2.1%)

9% less repeat investments, than reductions

Existing positions increased: 43 | Existing positions reduced: 47

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
141
Holders Change
+23
Holders Change %
+19.49%
% of All Funds
3.23%
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
+$2.5M
Net Calls Change
+$3.85M
Name Holding Trade Value Shares
Change
Change in
Stake
California State Teachers Retirement System (CalSTRS)
76
California State Teachers Retirement System (CalSTRS)
California
$1.37M -$47.2K -762 -3%
CS
77
Credit Suisse
Switzerland
$1.36M +$609K +9,844 +84%
WMSA
78
Weiss Multi-Strategy Advisers
New York
$1.33M -$49.5K -800 -4%
CCP
79
Clough Capital Partners
Massachusetts
$1.28M -$402K -6,500 -24%
Lazard Asset Management
80
Lazard Asset Management
New York
$1.18M -$483K -7,800 -29%
N
81
Nuveen
North Carolina
$1.1M +$1.08M +17,514 New
Neuberger Berman Group
82
Neuberger Berman Group
New York
$1.1M +$1.08M +17,500 New
Swiss National Bank
83
Swiss National Bank
Switzerland
$995K +$61.9K +1,000 +7%
SAM
84
Shell Asset Management
Netherlands
$948K
WG
85
Winton Group
United Kingdom
$886K +$871K +14,071 New
RhumbLine Advisers
86
RhumbLine Advisers
Massachusetts
$860K +$7.55K +122 +0.9%
TI
87
Trexquant Investment
Connecticut
$774K +$505K +8,155 +197%
EMG
88
Ellington Management Group
Connecticut
$762K +$749K +12,100 New
Barclays
89
Barclays
United Kingdom
$735K +$723K +11,681 New
SIA
90
Sit Investment Associates
Minnesota
$711K +$700K +11,300 New
Wolverine Trading
91
Wolverine Trading
Illinois
$695K +$684K +11,043 New
Macquarie Group
92
Macquarie Group
Australia
$683K
Manulife (Manufacturers Life Insurance)
93
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$681K -$21.7K -350 -3%
ARTA
94
A.R.T. Advisors
New York
$656K +$645K +10,421 New
PP
95
Paloma Partners
Connecticut
$640K -$441K -7,123 -41%
UBS Group
96
UBS Group
Switzerland
$621K -$67K -1,082 -10%
AIG
97
American International Group
New York
$574K -$30.4K -491 -5%
Squarepoint
98
Squarepoint
New York
$564K -$400K -6,461 -42%
AG
99
Aperio Group
California
$542K -$50.5K -815 -9%
DTL
100
Dynamic Technology Lab
Singapore
$509K +$500K +8,084 New

IRTC Hedge Fund Activity: Q1 2018 in Review

141 of the 4,363 institutional investors tracked by Wall St. Rank reported a position in iRhythm Holdings (IRTC) for Q1 2018, worth a combined $1.52B — up 17% from $1.3B a quarter earlier.

Buyers outnumbered sellers: 34 funds opened new IRTC positions and 10 closed out — a net gain of 24 holders — while 43 added to existing stakes and 47 trimmed.

The largest buyer was Ameriprise, adding an estimated $38.8M. The largest seller was Citadel Advisors, cutting an estimated $26.4M.

  • 141 institutional investors held iRhythm Holdings (IRTC) as of Q1 2018, up from 118 in Q4 2017.
  • Funds reported $1.52B of iRhythm Holdings stock for Q1 2018, up 17% quarter-over-quarter.
  • 34 funds opened new iRhythm Holdings positions in Q1 2018 and 10 closed out, a net change of +24 holders.
  • The largest iRhythm Holdings buyer in Q1 2018 was Ameriprise, an estimated $38.8M added.
  • The largest iRhythm Holdings seller in Q1 2018 was Citadel Advisors, an estimated $26.4M sold.

Based on aggregated 13F filings for Q1 2018.