iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
90,00 € ↓ -5,50 (-5,76%)
2026-06-02
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership0 shares
Ownership 0.00%
Vanguard Group Inc ownership in I25 / iRhythm Holdings, Inc.

2026-03-26 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 0 shares of iRhythm Holdings, Inc. (DE:I25). This represents 0.0 percent ownership of the company. In their previous filing dated 2025-01-08 , Vanguard Group Inc had reported owning 3,136,370 shares, indicating a decrease of -100.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-03-26 2026-03-26 13G/A 3,136,370 0 -100.00 0.00 -100.00
2025-01-08 2025-01-08 13G/A 2,993,443 3,136,370 4.77 10.02 2.56
2024-02-13 2024-02-13 13G/A 2,876,849 2,993,443 4.05 9.77 2.30
2023-02-09 2023-02-09 13G/A 2,680,700 2,876,849 7.32 9.55 4.83
2022-02-10 2022-02-10 13G/A 2,751,468 2,680,700 -2.57 9.11 -4.41
2021-02-10 2021-02-10 13G/A 2,431,994 2,751,468 13.14 9.53 4.38
2020-02-12 2020-02-12 13G/A 1,530,419 2,431,994 58.91 9.13 44.46
2019-02-11 2019-02-11 13G 1,530,419 6.32

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 3,310,519 70,420 2.17 587,418 5.41 0.0085
2025-11-07 2025-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 3,240,099 4,439 0.14 557,265 11.86 0.0083
2025-08-11 2025-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 3,235,660 127,466 4.10 498,162 53.11 0.0081
2025-05-09 2025-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 3,108,194 -28,176 -0.90 325,366 15.05 0.0059
2025-02-11 2024-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 3,136,370 18,442 0.59 282,806 22.18 0.0049
2024-11-13 2024-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 3,117,928 136,307 4.57 231,475 -27.88 0.0041
2024-08-13 2024-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,981,621 32,179 1.09 320,942 -6.19 0.0062
2024-05-10 2024-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,949,442 -44,001 -1.47 342,135 6.78 0.0068
2024-03-11 2023-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 2,993,443 35,694 1.21 320,418 14.93 0.0070
2024-02-14 2023-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,993,443 35,694 320,418 0.0061
2023-12-18 2023-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 2,957,749 26,469 0.90 278,797 -8.83 0.0068
2023-11-14 2023-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,957,749 26,469 278,797 0.0012
2023-08-14 2023-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,931,280 17,478 0.60 305,791 -15.39 0.0073
2023-07-14 2023-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 2,913,802 36,953 1.28 361,399 34.11 0.0092
2023-05-15 2023-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,913,802 36,953 361,399 0.0092
2023-02-10 2022-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,876,849 97,424 3.51 269,474 -22.61 0.0073
2022-11-14 2022-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,779,425 30,761 1.12 348,205 17.26 0.0102
2022-08-12 2022-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,748,664 34,443 1.27 296,939 -30.53 0.0083
2022-05-13 2022-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,714,221 33,521 1.25 427,409 35.47 0.0101
2022-02-14 2021-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,680,700 16,683 0.63 315,491 102.23 0.0072
2021-11-12 2021-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,664,017 -54,785 -2.02 156,005 -13.52 0.0039
2021-08-13 2021-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,718,802 -15,305 -0.56 180,392 -52.49 0.0045
2021-05-14 2021-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,734,107 -17,361 -0.63 379,658 -41.83 0.0103
2021-02-12 2020-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,751,468 139,564 5.34 652,676 4.95 0.0189
2020-11-16 2020-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,611,904 75,173 2.96 621,920 111.55 0.0206
2020-08-14 2020-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,536,731 44,791 1.80 293,982 45.02 0.0104
2020-05-15 2020-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,491,940 59,946 2.46 202,721 22.42 0.0086
2020-02-14 2019-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,431,994 43,693 1.83 165,594 -6.44 0.0056
2019-11-14 2019-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,388,301 188,002 8.54 176,998 1.72 0.0066
2019-08-14 2019-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 2,200,299 190,824 9.50 173,999 15.51 0.0065
2019-05-15 2019-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 2,009,475 479,056 31.30 150,630 41.66 0.0059
2019-02-14 2018-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 1,530,419 180,150 13.34 106,334 -16.81 0.0048
2018-12-13 2018-09-30 13F/A-2 IRHYTHM TECHNOLOGIES COM 450056106 1,350,269 473,235 53.96 127,816 79.63 0.0050
2018-11-23 2018-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 1,350,269 0 127,816 0.0050
2018-11-14 2018-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 1,350,269 473,235 127,816
2018-08-14 2018-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 877,034 115,392 15.15 71,154 48.41 0.0030
2018-05-15 2018-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 761,642 3,176 0.42 47,944 12.77 0.0021
2018-02-14 2017-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 758,466 26,373 3.60 42,513 11.93 0.0019
2017-11-14 2017-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 732,093 311,703 74.15 37,981 112.62 0.0018
2017-08-24 2017-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 420,390 115,146 37.72 17,863 55.64 0.0009
2017-08-11 2017-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 420,390 115,146 17,863
2017-05-12 2017-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 305,244 227,050 290.37 11,477 389.42 0.0006
2017-02-14 2016-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 78,194 78,194 2,345 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.