iRhythm Holdings, Inc.
DE ˙ DB ˙ US4500561067
89,00 € ↑1,00 (1,14%)
2026-06-04
DEL PRIS
SecurityDE:I25 / iRhythm Holdings, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership111,311 shares
Latest Disclosed Value $ 13,136,924
Trexquant Investment LP reports 41.52% increase in ownership of I25 / iRhythm Holdings, Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 111,311 shares of iRhythm Holdings, Inc. (DE:I25) valued at $10,908,478 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 78,653 shares of iRhythm Holdings, Inc.. This represents a change in shares of 41.52% during the quarter. The current value of the position is $9,906,679 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 111,311 32,658 41.52 13,137 -5.88 0.0944
2026-02-17 2025-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 78,653 53,890 217.62 13,956 227.76 0.1244
2025-11-14 2025-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 24,763 -40,454 -62.03 4,259 -57.59 0.0438
2025-08-12 2025-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 65,217 44,426 213.68 10,041 361.40 0.1132
2025-05-14 2025-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 20,791 20,791 2,176 0.0253
2025-02-12 2024-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -11,683 -100.00 0 -100.00
2024-11-12 2024-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 11,683 -15,769 -57.44 867 -70.65 0.0110
2024-08-13 2024-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 27,452 5,383 24.39 2,955 15.39 0.0451
2024-05-14 2024-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 22,069 -14,260 -39.25 2,560 -34.16 0.0510
2024-02-09 2023-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 36,329 16,700 85.08 3,889 110.16 0.0875
2023-11-13 2023-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 19,629 16,416 510.92 1,850 452.24 0.0464
2023-08-11 2023-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 3,213 -7,022 -68.61 335 -73.60 0.0088
2023-05-15 2023-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 10,235 -2,875 -21.93 1,269 3.34 0.0349
2023-02-13 2022-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 13,110 -1,414 -9.74 1,228 -32.53 0.0348
2022-11-14 2022-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 14,524 14,524 1,820 0.0640
2022-08-11 2022-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -4,512 -100.00 0 -100.00
2022-05-13 2022-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 4,512 -4,479 -49.82 711 -32.80 0.0334
2022-02-14 2021-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 8,991 8,991 1,058 0.0654
2021-08-12 2021-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -4,283 -100.00 0 -100.00
2021-05-13 2021-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 4,283 4,283 595 0.0546
2020-02-12 2019-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -16,010 -100.00 0 -100.00
2020-02-18 2019-09-30 13F/A-1 IRHYTHM TECHNOLOGIES COM 450056106 16,010 999 6.66 1,187 0.00 0.1025
2019-11-08 2019-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 16,010 999 1,187 102,518.1285
2019-08-09 2019-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 15,011 15,011 1,187 0.1068
2019-02-13 2018-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -14,748 -100.00 0 -100.00
2018-11-09 2018-09-30 13F IRHYTHM TECHNOLOGIES COM 450056106 14,748 14,748 1,396 0.1050
2018-08-07 2018-06-30 13F IRHYTHM TECHNOLOGIES COM 450056106 0 -12,302 -100.00 0 -100.00
2018-05-03 2018-03-31 13F IRHYTHM TECHNOLOGIES COM 450056106 12,302 8,155 196.65 774 233.62 0.0539
2018-02-08 2017-12-31 13F IRHYTHM TECHNOLOGIES COM 450056106 4,147 4,147 232 0.0255
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.