iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
89,00 € ↑1,00 (1,14%)
2026-06-04
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionPerceptive Advisors Llc
ManagerJoseph Edelman
Latest Disclosed Ownership105,026 shares
Latest Disclosed Value $ 12,395,169
Perceptive Advisors Llc reports 2.75% decrease in ownership of I25 / iRhythm Holdings, Inc.

On May 29, 2026 - Perceptive Advisors Llc filed a 13F-HR/A form disclosing ownership of 105,026 shares of iRhythm Holdings, Inc. (DE:I25) valued at $10,292,548 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 108,000 shares of iRhythm Holdings, Inc.. This represents a change in shares of -2.75% during the quarter. The current value of the position is $9,347,314 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)
2026-05-29 2026-03-31 13F/A-1 IRHYTHM HOLDINGS COM 450056106 105,026 -2,974 -2.75 12,395 -35.32 0.2422
2026-05-15 2026-03-31 13F IRHYTHM HOLDINGS COM 450056106 105,026 -2,974 12,395 0.2425
2026-02-17 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 108,000 -15,000 -12.20 19,164 -9.41 0.3416
2025-11-14 2025-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 123,000 123,000 21,155 0.6109
2025-08-06 2025-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 0 -65,153 -100.00 0 -100.00
2025-05-15 2025-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -65,153 0
2025-02-14 2024-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 65,153 42,562 188.40 5,875 250.27 0.1619
2024-11-14 2024-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 22,591 -12,614 -35.83 1,677 -55.74 0.0355
2024-08-16 2024-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 35,205 -210,000 -85.64 3,789 -86.68 0.0913
2024-08-14 2024-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 35,205 -210,000 3,789 0.0902
2024-08-06 2024-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 245,205 245,205 28,444 0.4977
2024-05-15 2024-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 245,205 245,205 28,444 0.4940
2019-08-14 2019-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -200,000 -100.00 0 -100.00
2019-05-16 2019-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 200,000 200,000 14,992 0.4230
2019-05-15 2019-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 200,000 14,992
2019-02-14 2018-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -168,939 -100.00 0 -100.00
2018-11-14 2018-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 168,939 -139,067 -45.15 15,992 -36.00 0.4276
2018-11-01 2018-06-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 308,006 -111,700 -26.61 24,989 -5.42 0.6551
2018-08-14 2018-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 308,006 -111,700 24,989
2018-05-15 2018-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 419,706 -7,665 -1.79 26,420 10.29 0.7400
2018-02-14 2017-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 427,371 54,700 14.68 23,954 23.89 0.7940
2017-11-14 2017-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 372,671 89,814 31.75 19,335 60.87 0.7387
2017-11-14 2017-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 372,671 19,335
2017-08-14 2017-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 282,857 11,800 4.35 12,019 17.93 0.6048
2017-05-15 2017-03-31 13F IRHYTHM TECHNOLOGIES SHARES COM 450056106 271,057 -81,184 -23.05 10,192 -3.55 0.5806
2017-05-02 2016-12-31 13F/A-3 IRHYTHM TECHNOLOGIES COM 450056106 352,241 352,241 10,567 0.7514
2017-03-20 2016-12-31 13F/A-2 IRHYTHM TECHNOLOGIES COM 450056106 352,241 0 10,567 0.7520
2017-03-09 2016-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 352,241 0 10,567 0.7520
2017-02-14 2016-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 352,241 10,567
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.