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iRhythm Holdings
IRTC

213 hedge funds and large institutions have $3.43B invested in iRhythm Holdings in 2021 Q4 according to their latest regulatory filings, with 54 funds opening new positions, 60 increasing their positions, 70 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

300% more funds holding in top 10

Funds holding in top 10: 1 → 4 (+3)

214% more call options, than puts

Call options by funds: $54.6M | Put options by funds: $17.4M

109% more capital invested

Capital invested by funds: $1.64B → $3.43B (+$1.78B)

108% more first-time investments, than exits

New positions opened: 54 | Existing positions closed: 26

15% more funds holding

Funds holding: 186 → 213 (+27)

3.56% more ownership

Funds ownership: 95.43% → 98.98% (+3.6%)

14% less repeat investments, than reductions

Existing positions increased: 60 | Existing positions reduced: 70

Holders
213
Holders Change
+27
Holders Change %
+14.52%
% of All Funds
3.28%
Holding in Top 10
4
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+300%
% of All Funds
0.06%
New
54
Increased
60
Reduced
70
Closed
26
Calls
$54.6M
Puts
$17.4M
Net Calls
+$37.2M
Net Calls Change
+$21.4M

Top Buyers

1
Capital Research Global Investors
Capital Research Global Investors
California
+$71.3M
2
PHS
PFM Health Sciences
California
+$48.1M
3
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$45.3M
4
Invesco
Invesco
Georgia
+$28.4M
5
BM
Bridger Management
New York
+$28.4M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$74M
2
CCM
Camber Capital Management
Massachusetts
-$27.8M
3
VIA
Vident Investment Advisory
Georgia
-$27.4M
4
Sands Capital Management
Sands Capital Management
Virginia
-$23.1M
5
Millennium Management
Millennium Management
New York
-$22.1M
Name Holding Trade Value Shares
Change 		Change in
Stake
SEI Investments
101
SEI Investments
Pennsylvania
$1.39M +$316K +3,445 +41%
State Board of Administration of Florida Retirement System
102
State Board of Administration of Florida Retirement System
Florida
$1.37M -$41.6K -454 -4%
VOYA Investment Management
103
VOYA Investment Management
Georgia
$1.35M -$4.77K -52 -0.5%
CSS
104
Cubist Systematic Strategies
Connecticut
$1.32M -$1.76M -19,150 -63%
Man Group
105
Man Group
United Kingdom
$1.31M -$1.47M -16,000 -59%
SO
106
STRS Ohio
Ohio
$1.29M +$1.01M +11,000 New
MIM
107
MetLife Investment Management
New Jersey
$1.24M – – –
OAM
108
Oppenheimer Asset Management
New York
$1.23M +$224K +2,440 +31%
CM
109
Caption Management
Oklahoma
$1.18M +$917K +10,000 New
WF
110
WoodTrust Financial
Wisconsin
$1.15M +$91.7K +1,000 +11%
Simplex Trading
111
Simplex Trading
Illinois
$1.11M -$1.18M -12,864 -58%
TI
112
Trexquant Investment
Connecticut
$1.06M +$825K +8,991 New
Principal Financial Group
113
Principal Financial Group
Iowa
$1.01M -$315K -3,436 -29%
GTCM
114
Gyon Technologies Capital Management
New Jersey
$965K +$752K +8,196 New
SG Americas Securities
115
SG Americas Securities
New York
$947K -$27K -294 -4%
ASRS
116
Arizona State Retirement System
Arizona
$931K -$6.24K -68 -0.9%
MLICM
117
Metropolitan Life Insurance Company (MetLife)
New York
$910K -$54.5K -594 -7%
DCM
118
Dupont Capital Management
Delaware
$867K +$676K +7,369 New
GF
119
Gabelli Funds
New York
$800K -$220K -2,400 -26%
CIM
120
CIM Investment Management
Pennsylvania
$781K – – –
ProShare Advisors
121
ProShare Advisors
Maryland
$758K +$245K +2,667 +71%
BNP Paribas Financial Markets
122
BNP Paribas Financial Markets
France
$758K +$34K +371 +6%
WG
123
Winton Group
United Kingdom
$735K -$620K -6,763 -52%
CAM
124
ClariVest Asset Management
California
$723K +$563K +6,137 New
Handelsbanken Fonder
125
Handelsbanken Fonder
Sweden
$706K +$55K +600 +11%
3 4
5
6 7

IRTC Hedge Fund Activity: Q4 2021 in Review

213 of the 6,498 institutional investors tracked by Wall St. Rank reported a position in iRhythm Holdings (IRTC) for Q4 2021, worth a combined $3.43B — up 109% from $1.64B a quarter earlier.

Buyers outnumbered sellers: 54 funds opened new IRTC positions and 26 closed out — a net gain of 28 holders — while 60 added to existing stakes and 70 trimmed.

The largest buyer was Capital Research Global Investors, adding an estimated $71.3M. The largest seller was Wellington Management Group, cutting an estimated $74M.

  • 213 institutional investors held iRhythm Holdings (IRTC) as of Q4 2021, up from 186 in Q3 2021.
  • Funds reported $3.43B of iRhythm Holdings stock for Q4 2021, up 109% quarter-over-quarter.
  • 54 funds opened new iRhythm Holdings positions in Q4 2021 and 26 closed out, a net change of +28 holders.
  • The largest iRhythm Holdings buyer in Q4 2021 was Capital Research Global Investors, an estimated $71.3M added.
  • The largest iRhythm Holdings seller in Q4 2021 was Wellington Management Group, an estimated $74M sold.

Based on aggregated 13F filings for Q4 2021.