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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 56 funds opening new positions, 79 increasing their positions, 82 reducing their positions, and 22 closing their positions.

Holders
255
Holders Change
+31
Holders Change %
+13.84%
% 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
56
Increased
79
Reduced
82
Closed
22
Calls
$14.4M
Puts
$24M
Net Calls
-$9.56M
Net Calls Change
+$4.76M

Top Buyers

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

Top Sellers

1
Alyeska Investment Group
1
Alyeska Investment Group
Illinois
$0
2
Citadel Advisors
2
Citadel Advisors
Florida
$325K
3
Mackenzie Financial
3
Mackenzie Financial
Ontario, Canada
$121M
4
Sands Capital Management
4
Sands Capital Management
Virginia
$316M
5
B
5
Braidwell
Connecticut
$58.2M
Name Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$325M 3,108,194 -28,176 -0.9%
Sands Capital Management
2
Sands Capital Management
Virginia
$316M 3,016,207 -160,495 -5%
Artisan Partners
3
Artisan Partners
Wisconsin
$295M 2,814,280 +51,546 +2%
BlackRock
4
BlackRock
New York
$283M 2,703,345 -25,511 -0.9%
Capital Research Global Investors
5
Capital Research Global Investors
California
$231M 2,202,622 +565,596 +35%
Mackenzie Financial
6
Mackenzie Financial
Ontario, Canada
$121M 1,155,954 -225,988 -16%
State Street
7
State Street
Massachusetts
$96.1M 917,688 -31,093 -3%
UBS AM
8
UBS AM
Illinois
$94.5M 903,084 +568,261 +170%
BNP Paribas Asset Management
9
BNP Paribas Asset Management
France
$92.1M 879,816 -20,300 -2%
CIP
10
Champlain Investment Partners
Vermont
$86.1M 822,791 +96,529 +13%
William Blair & Company
11
William Blair & Company
Illinois
$82.7M 789,999 +185,262 +31%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$78.6M 750,369 +18,902 +3%
EAM
13
Eventide Asset Management
Massachusetts
$77.5M 740,062 +652 +0.1%
Westfield Capital Management
14
Westfield Capital Management
Massachusetts
$64.6M 617,078 -148,175 -19%
Bessemer Group
15
Bessemer Group
New Jersey
$60.1M 574,053 +6,046 +1%
JPMorgan Chase & Co
16
JPMorgan Chase & Co
New York
$58.9M 562,514 -144,292 -20%
B
17
Braidwell
Connecticut
$58.2M 556,391 -149,000 -21%
Allspring Global Investments
18
Allspring Global Investments
North Carolina
$55.4M 518,618 -51,430 -9%
SIMG
19
Stephens Investment Management Group
Texas
$54.5M 520,582 +17,657 +4%
Fuller & Thaler Asset Management
20
Fuller & Thaler Asset Management
California
$54.2M 518,240 +518,240 New
Fidelity Investments
21
Fidelity Investments
Massachusetts
$48.5M 463,223 -12,182 -3%
Goldman Sachs
22
Goldman Sachs
New York
$45.4M 433,780 +108,941 +34%
Point72 Asset Management
23
Point72 Asset Management
Connecticut
$44M 420,303 +420,303 New
Millennium Management
24
Millennium Management
New York
$41.8M 399,746 +339,529 +564%
OAM
25
Ophir Asset Management
Australia
$39.5M 377,682 -49,720 -12%
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