iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
89,00 € ↑1,00 (1,14%)
2026-06-04
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionNorges Bank
Latest Disclosed Ownership437,403 shares
Ownership 1.52%
Norges Bank ownership in I25 / iRhythm Holdings, Inc.

2021-02-05 - Norges Bank has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 437,403 shares of iRhythm Holdings, Inc. (DE:I25). This represents 1.52 percent ownership of the company. In their previous filing dated 2020-01-31 , Norges Bank had reported owning 1,529,192 shares, indicating a decrease of -71.40 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)
2021-02-05 2021-02-05 13G/A 1,529,192 437,403 -71.40 1.52 -73.52
2020-01-31 2020-01-31 13G/A 1,323,045 1,529,192 15.58 5.74 14.57
2020-01-02 2020-01-02 13G 1,323,045 5.01

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)
2026-02-10 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 56,237 56,237 9,979 0.0011
2025-11-12 2024-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 0 -83,926 -100.00 0 -100.00
2024-11-13 2024-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -83,926 0
2024-08-14 2024-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 83,926 -151,244 -64.31 9,034 -66.89 0.0013
2025-05-14 2024-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 235,170 -12,606 -5.09 27,280 2.86 0.0043
2024-02-09 2023-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 247,776 -324,659 -56.72 26,522 -50.85 0.0046
2024-11-13 2023-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 572,435 -21,048 -3.55 53,958 -12.85 0.0109
2024-08-14 2023-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 593,483 13,930 2.40 61,912 -13.87 0.0122
2024-05-15 2023-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 579,553 -1,926 -0.33 71,882 31.97 0.0157
2023-02-14 2022-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 581,479 7,333 1.28 54,467 -24.28 0.0131
2023-11-13 2022-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 574,146 -103,795 -15.31 71,929 -1.79 0.0191
2023-08-14 2022-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 677,941 322,881 90.94 73,238 30.99 0.0189
2023-05-12 2022-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 355,060 20,671 6.18 55,911 42.07 0.0122
2022-03-09 2021-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 334,389 -15,947 -4.55 39,354 91.82 0.0081
2022-11-14 2021-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 350,336 -224,736 -39.08 20,516 -46.23 0.0045
2022-08-15 2021-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 575,072 296,576 106.49 38,156 -1.33 0.0083
2022-05-09 2021-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 278,496 -107,262 -27.81 38,672 -57.74 0.0089
2021-03-02 2020-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 385,758 5,100 1.34 91,506 0.96 0.0214
2021-11-12 2020-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 380,658 -188,317 -33.10 90,638 37.46 0.0241
2021-08-13 2020-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 568,975 -354,607 -38.39 65,939 -12.24 0.0190
2021-05-07 2020-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 923,582 -605,557 -39.60 75,133 -27.84 0.0268
2020-03-03 2019-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 1,529,139 525,095 52.30 104,119 39.93 0.0291
2020-11-13 2019-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 1,004,044 48,046 5.03 74,409 -1.58 0.0228
2020-08-13 2019-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 955,998 173,449 22.16 75,600 28.88 0.0234
2020-05-11 2019-03-31 13F/A-2 IRHYTHM TECHNOLOGIES COM 450056106 782,549 114,495 17.14 58,660 26.38 0.0190
2019-03-04 2018-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 668,054 225,214 50.86 46,416 10.73 0.0173
2019-12-02 2018-09-30 13F/A-3 IRHYTHM TECHNOLOGIES COM 450056106 442,840 -23,201 -4.98 41,919 10.87 0.0136
2019-12-02 2018-09-30 13F/A-2 IRHYTHM TECHNOLOGIES COM 450056106 442,840 -23,201 41,919 0.0136
2019-11-12 2018-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 442,840 -23,201 41,919 0.0136
2019-08-12 2018-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 466,041 48,636 11.65 37,810 43.90 0.0130
2019-05-15 2018-03-31 13F/A-2 IRHYTHM TECHNOLOGIES COM 450056106 417,405 79,846 23.65 26,275 38.87 0.0095
2018-03-05 2017-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 337,559 337,559 18,920 0.0068
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.