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iRhythm Technologies
IRTC

Overview Fund Activity

234 hedge funds and large institutions have $7.9B invested in iRhythm Technologies in 2020 Q4 according to their latest regulatory filings, with 41 funds opening new positions, 97 increasing their positions, 68 reducing their positions, and 37 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
234
Holders Change
+1
Holders Change %
+0.43%
% of All Funds
4.15%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
41
Increased
97
Reduced
68
Closed
37
Calls
$39.1M
Puts
$77.6M
Net Calls
-$38.5M
Net Calls Change
-$42.5M

Top Buyers

1
Sands Capital Management
1
Sands Capital Management
Virginia
$729M
2
Artisan Partners
2
Artisan Partners
Wisconsin
$322M
3
JSP
3
Jackson Square Partners
California
$176M
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$430M
5
BlackRock
5
BlackRock
New York
$541M

Top Sellers

1
William Blair Investment Management
1
William Blair Investment Management
Illinois
$0
2
Holocene Advisors
2
Holocene Advisors
New York
$39.9M
3
TCM
3
TimesSquare Capital Management
New York
$0
4
Loomis, Sayles & Company
4
Loomis, Sayles & Company
Massachusetts
$0
5
Lord, Abbett & Co
5
Lord, Abbett & Co
New Jersey
$42.6M
Name Holding Trade Value Shares
Change 		Shares
Change %
Russell Investments Group
251
Russell Investments Group
United Kingdom
– -$435K -1,831 Closed
PP
252
Paloma Partners
Connecticut
– -$417K -1,750 Closed
ACM
253
AlphaCrest Capital Management
New York
– -$358K -1,505 Closed
SEC
254
Seven Eight Capital
New York
– -$310K -1,300 Closed
Qube Research & Technologies (QRT)
255
Qube Research & Technologies (QRT)
United Kingdom
– -$305K -1,282 Closed
SL
256
Stevard LLC
Illinois
– -$294K -1,234 Closed
SCM
257
Soleus Capital Management
Connecticut
– -$283K -1,187 Closed
FC
258
Ferris Capital
Massachusetts
– -$274K -1,150 Closed
Simplex Trading
259
Simplex Trading
Illinois
– -$260K -1,096 Closed
QSS
260
Quantitative Systematic Strategies
Florida
– -$254K -1,067 Closed
TSS
261
Two Sigma Securities
New York
– -$233K -980 Closed
Walleye Capital
262
Walleye Capital
New York
– -$225K -945 Closed
MAM
263
Meeder Asset Management
Ohio
– -$207K -867 Closed
AT
264
Arden Trust
Delaware
– -$201K -845 Closed
PAM
265
Panagora Asset Management
Massachusetts
– -$158K -663 Closed
HFM
266
Harvest Fund Management
China
– -$70K -313 Closed
CCM
267
Chiron Capital Management
Florida
– -$18K -74 Closed
PCM
268
Prelude Capital Management
New York
– -$17K -70 Closed
CCM
269
Covington Capital Management
California
– -$4K -15 Closed
CWC
270
Carolinas Wealth Consulting
North Carolina
– -$1K -6 Closed
7 8 9 10
11