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iRhythm Technologies
IRTC

Overview Fund Activity

255 hedge funds and large institutions have $3.77B invested in iRhythm Technologies in 2025 Q1 according to their latest regulatory filings, with 55 funds opening new positions, 80 increasing their positions, 82 reducing their positions, and 22 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
255
Holders Change
+30
Holders Change %
+13.33%
% of All Funds
3.46%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
55
Increased
80
Reduced
82
Closed
22
Calls
$14.4M
Puts
$24M
Net Calls
-$9.56M
Net Calls Change
+$4.76M

Top Buyers

1
UBS AM
UBS AM
Illinois
$94.5M
2
Capital Research Global Investors
Capital Research Global Investors
California
$231M
3
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management
California
$54.2M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
$44M
5
Millennium Management
Millennium Management
New York
$41.8M

Top Sellers

1
Alyeska Investment Group
Alyeska Investment Group
Illinois
$0
2
Citadel Advisors
Citadel Advisors
Florida
$325K
3
Mackenzie Financial
Mackenzie Financial
Ontario, Canada
$121M
4
Sands Capital Management
Sands Capital Management
Virginia
$316M
5
B
Braidwell
Connecticut
$58.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
GCP
151
GSA Capital Partners
United Kingdom
$451K +$200K +1,908 +80%
BC
152
Bayforest Capital
United Kingdom
$441K +$267K +2,549 +153%
CAPTRUST Financial Advisors
153
CAPTRUST Financial Advisors
North Carolina
$437K +$29.7K +284 +7%
PNC Financial Services Group
154
PNC Financial Services Group
Pennsylvania
$429K -$91.9K -878 -18%
AA
155
Ancora Advisors
Ohio
$419K – – –
OAM
156
Oppenheimer Asset Management
New York
$418K -$123K -1,173 -23%
FRM
157
Fox Run Management
Connecticut
$403K +$1.36K +13 +0.3%
Mariner
158
Mariner
Kansas
$393K +$103K +981 +35%
Victory Capital Management
159
Victory Capital Management
Texas
$386K -$12.6K -120 -3%
CIBC Private Wealth Group
160
CIBC Private Wealth Group
Georgia
$382K -$6K -62 -2%
Public Employees Retirement Association of Colorado
161
Public Employees Retirement Association of Colorado
Colorado
$366K – – –
BNP Paribas Financial Markets
162
BNP Paribas Financial Markets
France
$364K -$94.1K -899 -21%
IAS
163
IMA Advisory Services
Colorado
$338K – – –
KeyBank National Association
164
KeyBank National Association
Ohio
$332K +$332K +3,172 New
AIP
165
Ameritas Investment Partners
Nebraska
$331K -$11.3K -108 -3%
Citadel Advisors
166
Citadel Advisors
Florida
$325K -$31.4M -299,954 -99%
Canada Life
167
Canada Life
Manitoba, Canada
$322K – – –
GCM
168
Graham Capital Management
Connecticut
$310K +$15K +143 +5%
SOS
169
Silver Oak Securities
Tennessee
$301K +$301K +2,863 New
SSA
170
Schonfeld Strategic Advisors
New York
$293K -$350K -3,340 -54%
LPL Financial
171
LPL Financial
California
$267K -$15.1K -144 -5%
CCM
172
CAAS Capital Management
New York
$262K +$262K +2,502 New
XT
173
XTX Topco
Cayman Islands
$258K +$258K +2,462 New
X
174
Xponance
Pennsylvania
$250K +$14.3K +137 +6%
VA
175
Vident Advisory
Georgia
$246K +$246K +2,352 New
5 6
7
8 9