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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
Millennium Management
51
Millennium Management
New York
$8.36M -$22.1M -241,164 -77%
Dimensional Fund Advisors
52
Dimensional Fund Advisors
Texas
$7.75M +$4.55M +49,562 +304%
Skandinaviska Enskilda Banken (SEB)
53
Skandinaviska Enskilda Banken (SEB)
Sweden
$7.72M +$49.7K +542 +0.8%
Swiss National Bank
54
Swiss National Bank
Switzerland
$7.63M – – –
Ameriprise
55
Ameriprise
Minnesota
$7.48M -$15.9M -173,806 -73%
PHP
56
Parkman Healthcare Partners
Connecticut
$7.29M +$2.7M +29,480 +91%
State of Wisconsin Investment Board
57
State of Wisconsin Investment Board
Wisconsin
$7.12M – – –
Goldman Sachs
58
Goldman Sachs
New York
$6.77M +$1.54M +16,755 +41%
Jane Street
59
Jane Street
New York
$6.46M +$1.82M +19,844 +57%
PGM
60
Parian Global Management
New York
$6.41M -$183K -1,990 -4%
AllianceBernstein
61
AllianceBernstein
Tennessee
$5.7M -$27.5K -300 -0.6%
PPA
62
Parametric Portfolio Associates
Washington
$5.01M +$1.51M +16,429 +63%
Group One Trading
63
Group One Trading
Illinois
$4.93M +$2.97M +32,349 +339%
Allspring Global Investments
64
Allspring Global Investments
North Carolina
$4.88M +$3.81M +41,506 New
California State Teachers Retirement System (CalSTRS)
65
California State Teachers Retirement System (CalSTRS)
California
$4.81M +$89K +970 +2%
IHAM
66
Integral Health Asset Management
New York
$4.71M +$3.67M +40,000 New
UBS AM
67
UBS AM
Illinois
$4.5M -$169K -1,847 -5%
Royal Bank of Canada
68
Royal Bank of Canada
Ontario, Canada
$4.41M +$798K +8,703 +30%
TD Asset Management
69
TD Asset Management
Ontario, Canada
$4.24M +$1.06M +11,573 +47%
Point72 Asset Management
70
Point72 Asset Management
Connecticut
$4.11M +$3.2M +34,900 New
Marshall Wace
71
Marshall Wace
United Kingdom
$3.73M +$2.91M +31,733 New
RhumbLine Advisers
72
RhumbLine Advisers
Massachusetts
$3.73M -$37.4K -408 -1%
Axa
73
Axa
France
$3.71M – – –
Russell Investments Group
74
Russell Investments Group
United Kingdom
$3.7M -$1.16M -12,679 -29%
BA
75
Bridgewater Associates
Connecticut
$3.69M +$257K +2,804 +10%
1 2
3
4 5

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.