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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 Holding Trade Value Shares
Change 		Shares
Change %
Bank of America
26
Bank of America
North Carolina
$38.9M +$12.5M +119,452 +47%
SPC
27
Slate Path Capital
New York
$38.3M -$15.2M -145,100 -28%
Bank of New York Mellon
28
Bank of New York Mellon
New York
$37.4M -$14M -133,984 -27%
FLAM
29
First Light Asset Management
Minnesota
$34M -$11M -105,454 -24%
Schroder Investment Management Group
30
Schroder Investment Management Group
United Kingdom
$33M +$667K +6,352 +2%
SEI Investments
31
SEI Investments
Pennsylvania
$32.7M -$617K -5,891 -2%
Northern Trust
32
Northern Trust
Illinois
$30.6M +$489K +4,675 +2%
Jennison Associates
33
Jennison Associates
New York
$29.3M +$29.3M +280,187 New
Lord, Abbett & Co
34
Lord, Abbett & Co
New Jersey
$27.1M +$27.1M +258,628 New
Charles Schwab
35
Charles Schwab
California
$26.6M -$515K -4,915 -2%
RSCM
36
Rock Springs Capital Management
Maryland
$26.6M -$15M -143,200 -36%
FAM
37
Fred Alger Management
New York
$26.1M -$2.41M -23,059 -8%
Morgan Stanley
38
Morgan Stanley
New York
$24.4M -$2M -19,095 -8%
FCM
39
Frontier Capital Management
Massachusetts
$23.5M -$13.6M -130,237 -37%
NCGI
40
Next Century Growth Investors
Minnesota
$21.8M +$21.8M +208,220 New
Deutsche Bank
41
Deutsche Bank
Germany
$21.5M -$3.14K -30 -0%
Barclays
42
Barclays
United Kingdom
$21M -$1.57M -15,029 -7%
Manulife (Manufacturers Life Insurance)
43
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$20.6M +$46K +439 +0.2%
Citigroup
44
Citigroup
New York
$19.4M -$529K -5,056 -3%
UBS Group
45
UBS Group
Switzerland
$19.2M +$1.31M +12,511 +7%
Verition Fund Management
46
Verition Fund Management
Connecticut
$17.4M +$17.4M +166,472 New
Wellington Management Group
47
Wellington Management Group
Massachusetts
$17.3M -$7.14M -68,198 -29%
New York State Common Retirement Fund
48
New York State Common Retirement Fund
New York
$16.8M +$3.49M +33,307 +26%
AIMCA
49
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$15.2M – – –
WCM Investment Management
50
WCM Investment Management
California
$14.5M +$24.7K +235 +0.2%
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