iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
88,00 € ↓ -2,00 (-2,22%)
2026-06-03
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership788,302 shares
Latest Disclosed Value $ 93,035,402
State Street Corp reports 3.07% increase in ownership of I25 / iRhythm Holdings, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 788,302 shares of iRhythm Holdings, Inc. (DE:I25) valued at $77,253,596 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 764,839 shares of iRhythm Holdings, Inc.. This represents a change in shares of 3.07% during the quarter. The current value of the position is $69,370,576 USD.

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)
2026-05-15 2026-03-31 13F IRHYTHM HOLDINGS COM 450056106 788,302 23,463 3.07 93,035 -31.45 0.0032
2026-02-13 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 764,839 -83,039 -9.79 135,713 -6.93 0.0046
2025-11-14 2025-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 847,878 -20,647 -2.38 145,827 9.05 0.0051
2025-08-14 2025-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 868,525 -49,163 -5.36 133,718 39.20 0.0050
2025-05-15 2025-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 917,688 -31,093 -3.28 96,064 12.29 0.0040
2025-02-14 2024-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 948,781 39,938 4.39 85,552 26.79 0.0034
2024-11-14 2024-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 908,843 11,992 1.34 67,473 -30.11 0.0027
2024-08-14 2024-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 896,851 127,618 16.59 96,537 8.19 0.0042
2024-05-15 2024-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 769,233 -8,294 -1.07 89,231 7.22 0.0040
2024-02-14 2023-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 777,527 -68,837 -8.13 83,226 4.32 0.0040
2023-11-14 2023-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 846,364 -16,544 -1.92 79,778 -11.38 0.0044
2023-08-14 2023-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 862,908 86,224 11.10 90,019 -6.55 0.0047
2023-05-15 2023-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 776,684 17,470 2.30 96,329 35.45 0.0054
2023-05-15 2022-12-31 13F/A-99 IRHYTHM TECHNOLOGIES COM 450056106 759,214 49,869 7.03 71,116 -19.98 0.0042
2023-05-15 2022-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 759,214 49,869 71,116 0.0042
2022-11-15 2022-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 709,345 6,380 0.91 88,867 17.02 0.0056
2022-08-15 2022-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 702,965 -54,241 -7.16 75,941 -36.31 0.0046
2022-05-16 2022-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 757,206 -15,659 -2.03 119,237 31.09 0.0059
2022-02-14 2021-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 772,865 -104,199 -11.88 90,958 77.10 0.0043
2021-11-15 2021-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 877,064 63,109 7.75 51,361 -4.90 0.0027
2021-08-16 2021-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 813,955 174,847 27.36 54,006 -39.15 0.0028
2021-07-09 2021-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 639,108 -167 -0.03 88,747 -41.48 0.0051
2021-05-17 2021-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 639,108 -167 88,747 0.0051
2021-02-16 2020-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 639,275 7,861 1.24 151,642 0.86 0.0093
2020-11-10 2020-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 631,414 -35,048 -5.26 150,346 94.66 0.0103
2020-08-14 2020-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 666,462 -62,154 -8.53 77,236 30.31 0.0056
2020-06-19 2020-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 728,616 54,048 8.01 59,273 29.05 0.0052
2020-05-11 2020-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 728,616 54,048 59,273 5,205.3629
2020-02-06 2019-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 674,568 52,033 8.36 45,931 -0.44 0.0031
2019-11-14 2019-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 622,535 2,249 0.36 46,136 -5.94 0.0034
2019-08-14 2019-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 620,286 33,156 5.65 49,052 11.45 0.0037
2019-05-15 2019-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 587,130 29,864 5.36 44,011 13.67 0.0034
2019-02-12 2018-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 557,266 -16,193 -2.82 38,719 -28.67 0.0035
2018-11-09 2018-09-30 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 573,459 68,145 13.49 54,278 32.40 0.0042
2018-08-14 2018-06-30 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 505,314 185,686 58.09 40,994 103.77 0.0034
2018-05-15 2018-03-31 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 319,628 6,945 2.22 20,118 14.78 0.0017
2018-02-14 2017-12-31 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 312,683 76,136 32.19 17,528 42.82 0.0014
2017-11-14 2017-09-30 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 236,547 31,219 15.20 12,273 40.76 0.0011
2017-08-14 2017-06-30 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 205,328 101,358 97.49 8,719 122.82 0.0008
2017-05-15 2017-03-31 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 103,970 40,113 62.82 3,913 104.23 0.0003
2017-02-09 2016-12-31 13F IRHYTHM TECHNOLOGIES Common equity shares 450056106 63,857 63,857 1,916 0.0002
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.