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iRhythm Holdings

334 hedge funds and large institutions have $6.24B invested in iRhythm Holdings in 2025 Q4 according to their latest regulatory filings, with 46 funds opening new positions, 109 increasing their positions, 122 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed

1.14% more ownership

Funds ownership: 108.02%109.16% (+1.1%)

10% more first-time investments, than exits

New positions opened: 46 | Existing positions closed: 42

5% more capital invested

Capital invested by funds: $5.96B → $6.24B (+$278M)

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

1% less funds holding

Funds holding: 337334 (-3)

11% less repeat investments, than reductions

Existing positions increased: 109 | Existing positions reduced: 122

67% less call options, than puts

Call options by funds: $7M | Put options by funds: $21.3M

Holders
334
Holders Change
-3
Holders Change %
-0.89%
% of All Funds
4.06%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.02%
New
46
Increased
109
Reduced
122
Closed
42
Calls
$7M
Puts
$21.3M
Net Calls
-$14.3M
Net Calls Change
+$5.32M
Name Holding Trade Value Shares
Change
Change in
Stake
Raymond James Financial
51
Raymond James Financial
Florida
$27.4M -$2.72M -15,331 -9%
FLAM
52
First Light Asset Management
Minnesota
$27.3M -$218K -1,228 -0.8%
UBS Group
53
UBS Group
Switzerland
$27.2M +$17.8M +100,435 +190%
Massachusetts Financial Services
54
Massachusetts Financial Services
Massachusetts
$26.7M -$1.82M -10,266 -6%
Qube Research & Technologies (QRT)
55
Qube Research & Technologies (QRT)
United Kingdom
$25.7M -$3.94M -22,248 -13%
Jennison Associates
56
Jennison Associates
New York
$24.7M -$3.23M -18,217 -12%
N
57
Nuveen
North Carolina
$23.7M -$14.7M -82,973 -38%
IHAM
58
Integral Health Asset Management
New York
$23.1M +$11.5M +65,000 +100%
New York State Common Retirement Fund
59
New York State Common Retirement Fund
New York
$23M -$6.68M -37,715 -23%
OAM
60
Ophir Asset Management
Australia
$22.7M +$4.63M +26,136 +26%
Walleye Capital
61
Walleye Capital
New York
$22.6M +$5.61M +31,684 +33%
Adage Capital Partners
62
Adage Capital Partners
Massachusetts
$22.2M +$13.3M +75,000 +150%
Ameriprise
63
Ameriprise
Minnesota
$21.9M -$2.43M -13,688 -10%
OAM
64
Oberweis Asset Management
Illinois
$21.2M +$6.82M +38,500 +47%
Franklin Resources
65
Franklin Resources
California
$21M +$18.8M +106,347 +869%
Bank of New York Mellon
66
Bank of New York Mellon
New York
$19.9M +$2.3M +12,957 +13%
SBH
67
Segall Bryant & Hamill
Illinois
$19.8M -$2.41M -13,601 -11%
PA
68
Perceptive Advisors
New York
$19.2M -$2.66M -15,000 -12%
Federated Hermes
69
Federated Hermes
Pennsylvania
$18.9M +$6.38M +36,006 +51%
Renaissance Technologies
70
Renaissance Technologies
New York
$18.4M -$3.1M -17,500 -14%
Squarepoint
71
Squarepoint
New York
$16.6M -$15.5M -87,327 -48%
MGP
72
M&G plc
United Kingdom
$14.9M +$1.29M +7,270 +9%
CWG
73
C WorldWide Group
Denmark
$14.2M
TI
74
Trexquant Investment
Connecticut
$14M +$9.55M +53,890 +218%
EGM
75
Engineers Gate Manager
New York
$13.7M -$1.43M -8,092 -9%