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iRhythm Holdings
IRTC

235 hedge funds and large institutions have $7.9B invested in iRhythm Holdings in 2020 Q4 according to their latest regulatory filings, with 42 funds opening new positions, 97 increasing their positions, 68 reducing their positions, and 37 closing their positions.

New
Increased
Maintained
Reduced
Closed

43% more repeat investments, than reductions

Existing positions increased: 97 | Existing positions reduced: 68

14% more first-time investments, than exits

New positions opened: 42 | Existing positions closed: 37

6% more capital invested

Capital invested by funds: $7.42B → $7.9B (+$478M)

6.38% more ownership

Funds ownership: 109.29% → 115.68% (+6.4%)

1% more funds holding

Funds holding: 233 → 235 (+2)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

50% less call options, than puts

Call options by funds: $39.1M | Put options by funds: $77.6M

Holders
235
Holders Change
+2
Holders Change %
+0.86%
% of All Funds
4.16%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
42
Increased
97
Reduced
68
Closed
37
Calls
$39.1M
Puts
$77.6M
Net Calls
-$38.5M
Net Calls Change
-$42.5M

Top Buyers

Rank Fund Capital Flow
1
Sands Capital Management
Sands Capital Management
Virginia
+$266M
2
Artisan Partners
Artisan Partners
Wisconsin
+$217M
3
JSP
Jackson Square Partners
California
+$169M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$95.8M
5
BlackRock
BlackRock
New York
+$48.5M

Top Sellers

Rank Fund Capital Flow
1
William Blair Investment Management
William Blair Investment Management
Illinois
-$255M
2
Holocene Advisors
Holocene Advisors
New York
-$78.5M
3
TCM
TimesSquare Capital Management
New York
-$61.9M
4
Loomis, Sayles & Company
Loomis, Sayles & Company
Massachusetts
-$58.2M
5
Lord, Abbett & Co
Lord, Abbett & Co
New Jersey
-$41.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
MLICM
101
Metropolitan Life Insurance Company (MetLife)
New York
$1.91M +$41.3K +181 +2%
WMSA
102
Weiss Multi-Strategy Advisers
New York
$1.9M -$460K -2,018 -20%
N
103
Natixis
France
$1.77M -$65.6K -288 -4%
Alyeska Investment Group
104
Alyeska Investment Group
Illinois
$1.68M +$1.61M +7,067 New
Lazard Asset Management
105
Lazard Asset Management
New York
$1.65M -$692K -3,037 -30%
Jane Street
106
Jane Street
New York
$1.61M +$516K +2,263 +50%
SSA
107
Schonfeld Strategic Advisors
New York
$1.61M +$1.55M +6,800 New
ProShare Advisors
108
ProShare Advisors
Maryland
$1.52M +$693K +3,040 +90%
LCM
109
Landscape Capital Management
New Jersey
$1.43M +$1.38M +6,035 New
SO
110
STRS Ohio
Ohio
$1.42M -$22.8K -100 -2%
Susquehanna International Group
111
Susquehanna International Group
Pennsylvania
$1.41M +$737K +3,234 +119%
Handelsbanken Fonder
112
Handelsbanken Fonder
Sweden
$1.35M +$228K +1,000 +21%
Aviva
113
Aviva
United Kingdom
$1.34M -$1.05M -4,595 -45%
PCH
114
Polar Capital Holdings
United Kingdom
$1.3M +$1.25M +5,471 New
BNP Paribas Financial Markets
115
BNP Paribas Financial Markets
France
$1.29M -$238K -1,043 -16%
PP
116
PDT Partners
New York
$1.26M +$542K +2,376 +81%
CF
117
CNA Financial
Illinois
$1.25M +$47.9K +210 +4%
CCM
118
Conway Capital Management
California
$1.23M +$1.18M +5,190 New
MSL
119
Mackay Shields LLC
New York
$1.21M -$1.05M -4,600 -47%
OAM
120
Oppenheimer Asset Management
New York
$1.21M -$101K -443 -8%
KJHP
121
K.J. Harrison & Partners
Ontario, Canada
$1.19M +$1.14M +5,000 New
ZIM
122
Zacks Investment Management
Illinois
$1.11M +$1.07M +4,695 New
AB
123
Amalgamated Bank
New York
$1.07M +$56.7K +249 +6%
RHBC
124
R.H. Bluestein & Co
Michigan
$1.04M +$661K +2,900 +193%
Public Employees Retirement Association of Colorado
125
Public Employees Retirement Association of Colorado
Colorado
$994K – – –
3 4
5
6 7

IRTC Hedge Fund Activity: Q4 2020 in Review

235 of the 5,651 institutional investors tracked by Wall St. Rank reported a position in iRhythm Holdings (IRTC) for Q4 2020, worth a combined $7.9B — up 6.4% from $7.42B a quarter earlier.

Buyers outnumbered sellers: 42 funds opened new IRTC positions and 37 closed out — a net gain of 5 holders — while 97 added to existing stakes and 68 trimmed.

The largest buyer was Sands Capital Management, adding an estimated $266M. The largest seller was William Blair Investment Management, exiting entirely with an estimated $255M sold.

  • 235 institutional investors held iRhythm Holdings (IRTC) as of Q4 2020, up from 233 in Q3 2020.
  • Funds reported $7.9B of iRhythm Holdings stock for Q4 2020, up 6.4% quarter-over-quarter.
  • 42 funds opened new iRhythm Holdings positions in Q4 2020 and 37 closed out, a net change of +5 holders.
  • The largest iRhythm Holdings buyer in Q4 2020 was Sands Capital Management, an estimated $266M added.
  • The largest iRhythm Holdings seller in Q4 2020 was William Blair Investment Management, an estimated $255M sold.

Based on aggregated 13F filings for Q4 2020.