iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
89,00 € ↑1,00 (1,14%)
2026-06-04
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionJennison Associates Llc
Latest Disclosed Ownership137,040 shares
Latest Disclosed Value $ 16,173,463
Jennison Associates Llc reports 1.45% decrease in ownership of I25 / iRhythm Holdings, Inc.

On May 6, 2026 - Jennison Associates Llc filed a 13F-HR form disclosing ownership of 137,040 shares of iRhythm Holdings, Inc. (DE:I25) valued at $13,429,920 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 139,059 shares of iRhythm Holdings, Inc.. This represents a change in shares of -1.45% during the quarter. The current value of the position is $12,196,560 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)
2026-05-06 2026-03-31 13F IRHYTHM HOLDINGS COM 450056106 137,040 -2,019 -1.45 16,173 -34.45 0.0060
2026-01-30 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 139,059 -18,217 -11.58 24,675 -8.78 0.0148
2025-10-30 2025-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 157,276 -140,216 -47.13 27,050 -40.94 0.0157
2025-08-01 2025-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 297,492 17,305 6.18 45,802 56.16 0.0272
2025-05-05 2025-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 280,187 280,187 29,330 0.0206
2020-08-06 2020-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -92,054 -100.00 0 -100.00
2020-05-06 2020-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 92,054 -62,727 -40.53 7,489 -28.94 0.0091
2020-02-07 2019-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 154,781 1,253 0.82 10,539 -7.37 0.0106
2019-11-08 2019-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 153,528 -14,633 -8.70 11,378 -14.44 0.0120
2019-08-06 2019-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 168,161 -1,791 -1.05 13,298 4.38 0.0133
2019-05-10 2019-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 169,952 -93 -0.05 12,740 7.83 0.0127
2019-02-06 2018-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 170,045 55,594 48.57 11,815 9.05 0.0132
2018-11-08 2018-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 114,451 -2,848 -2.43 10,834 13.85 0.0100
2018-08-02 2018-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 117,299 5,262 4.70 9,516 34.92 0.0093
2018-04-20 2018-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 112,037 15,621 16.20 7,053 30.51 0.0070
2018-01-25 2017-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 96,416 878 0.92 5,404 9.02 0.0053
2017-11-03 2017-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 95,538 -203 -0.21 4,957 21.85 0.0051
2017-08-04 2017-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 95,741 -830 -0.86 4,068 12.04 0.0043
2017-08-02 2017-03-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 96,571 -108,723 -52.96 3,631 -41.05 0.0039
2017-04-28 2017-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 96,571 -108,723 3,631
2017-08-02 2016-12-31 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 205,294 205,294 6,159 0.0069
2017-02-06 2016-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 205,294 6,159
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.