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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
Bank of America
26
Bank of America
North Carolina
$63M -$3.72M -21,018 -6%
Mackenzie Financial
27
Mackenzie Financial
Ontario, Canada
$61.9M -$19.1M -107,957 -24%
Goldman Sachs
28
Goldman Sachs
New York
$58.4M +$1.04M +5,878 +2%
Westfield Capital Management
29
Westfield Capital Management
Massachusetts
$57.7M +$192K +1,083 +0.3%
Bessemer Group
30
Bessemer Group
New Jersey
$57.1M -$19.9M -112,251 -26%
FAM
31
Fred Alger Management
New York
$55.1M -$1.69M -9,517 -3%
PCH
32
Polar Capital Holdings
United Kingdom
$54.7M -$4.93M -27,808 -8%
Charles Schwab
33
Charles Schwab
California
$50.8M -$95.3K -538 -0.2%
Northern Trust
34
Northern Trust
Illinois
$49.5M -$2.71M -15,301 -5%
Lord, Abbett & Co
35
Lord, Abbett & Co
New Jersey
$49.2M -$871K -4,914 -2%
DCM
36
Driehaus Capital Management
Illinois
$47.5M +$8.78M +49,545 +23%
RSCM
37
Rock Springs Capital Management
Maryland
$41.7M
Assenagon Asset Management
38
Assenagon Asset Management
Luxembourg
$40M +$26.1M +147,329 +189%
Point72 Asset Management
39
Point72 Asset Management
Connecticut
$38.9M -$22.8M -128,644 -37%
B
40
Braidwell
Connecticut
$38.6M -$1.51M -8,500 -4%
SEI Investments
41
SEI Investments
Pennsylvania
$36.1M -$7.73M -43,611 -18%
Manulife (Manufacturers Life Insurance)
42
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$34.8M +$129K +727 +0.4%
Barclays
43
Barclays
United Kingdom
$34.4M +$1.28M +7,222 +4%
Jane Street
44
Jane Street
New York
$34.1M +$17.7M +99,953 +108%
Citigroup
45
Citigroup
New York
$33.8M +$6.01M +33,915 +22%
Deutsche Bank
46
Deutsche Bank
Germany
$33.3M -$2.11M -11,882 -6%
NCGI
47
Next Century Growth Investors
Minnesota
$30.7M -$2.88M -16,244 -9%
Morgan Stanley
48
Morgan Stanley
New York
$30.2M +$2.68M +15,120 +10%
Balyasny Asset Management
49
Balyasny Asset Management
Illinois
$29.7M +$29.6M +167,274 New
Schroder Investment Management Group
50
Schroder Investment Management Group
United Kingdom
$28.9M -$357K -2,013 -1%