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iRhythm Technologies

328 hedge funds and large institutions have $5.99B invested in iRhythm Technologies in 2025 Q3 according to their latest regulatory filings, with 61 funds opening new positions, 108 increasing their positions, 113 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

2.86% less ownership

Funds ownership: 110.86%107.99% (-2.9%)

44% less call options, than puts

Call options by funds: $24.5M | Put options by funds: $44.1M

60% less funds holding in top 10

Funds holding in top 10: 52 (-3)

Holders
328
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$24.5M
Puts
$44.1M
Net Calls
Net Calls Change

Top Buyers

1 +$91.6M
2 +$57.5M
3 +$53.9M
4
Invesco
Invesco
Georgia
+$53.1M
5
Fidelity Investments
Fidelity Investments
Massachusetts
+$35.1M
Name Holding Trade Value Shares
Change
Change in
Stake
AG
76
Algert Global
California
$13.7M
Victory Capital Management
77
Victory Capital Management
Texas
$13.4M
Assenagon Asset Management
78
Assenagon Asset Management
Luxembourg
$13.4M
MGP
79
M&G plc
United Kingdom
$13.2M
WCM Investment Management
80
WCM Investment Management
California
$13.1M
Federated Hermes
81
Federated Hermes
Pennsylvania
$12.1M
TCM
82
TimesSquare Capital Management
New York
$11.6M
IHAM
83
Integral Health Asset Management
New York
$11.2M
PHS
84
PFM Health Sciences
California
$11.2M
Swiss National Bank
85
Swiss National Bank
Switzerland
$10.6M
State of Wisconsin Investment Board
86
State of Wisconsin Investment Board
Wisconsin
$10.4M
First Trust Advisors
87
First Trust Advisors
Illinois
$10.1M
CM
88
Castleark Management
Illinois
$10M
PCM
89
Peregrine Capital Management
Minnesota
$9.99M
Amundi
90
Amundi
France
$9.79M
UBS Group
91
UBS Group
Switzerland
$9.08M
Macquarie Group
92
Macquarie Group
Australia
$8.84M
Connor, Clark & Lunn Investment Management (CC&L)
93
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$8.83M
Adage Capital Partners
94
Adage Capital Partners
Massachusetts
$8.6M
SAM
95
Silvercrest Asset Management
New York
$8.23M
RhumbLine Advisers
96
RhumbLine Advisers
Massachusetts
$8.18M
Russell Investments Group
97
Russell Investments Group
United Kingdom
$8.07M
Legal & General Group
98
Legal & General Group
United Kingdom
$7.22M
SCM
99
Steadfast Capital Management
New York
$6.83M
HIM
100
Hillsdale Investment Management
Ontario, Canada
$6.58M