Group One Trading, L.P.
- SEC CIK
- 0000932540
- Latest filing
- Aug 13, 2026
IRTC holding history
iRhythm Holdings, Inc. in every 13F filed by Group One Trading, L.P., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
IRTC overviewAll 13F holders of IRTCFull Q2 2026 holdings
- Shares (Q2 2026)
- 371
- Value
- $44.1K
- % of portfolio
- <0.1%
- Quarters held
- 13
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 371 | $44.1K | <0.1% | −1,378−78.8% | Reduced | Holders |
| Q1 2026 | 1,749 | $206.4K | <0.1% | +1,749 | New | Holders |
| Q3 2025 | 0 | $0 | 0.0% | −5,450−100.0% | Sold out | Holders |
| Q2 2025 | 5,450 | $839.1K | <0.1% | −10,405−65.6% | Reduced | Holders |
| Q1 2025 | 15,855 | $1.66M | 0.1% | −4,515−22.2% | Reduced | Holders |
| Q4 2024 | 20,370 | $1.84M | 0.1% | +20,370 | New | Holders |
| Q2 2024 | 0 | $0 | 0.0% | −2,969−100.0% | Sold out | Holders |
| Q1 2024 | 2,969 | $344.4K | <0.1% | +732+32.7% | Added | Holders |
| Q4 2023 | 2,237 | $239.4K | <0.1% | +2,237 | New | Holders |
| Q1 2023 | 0 | $0 | 0.0% | −38−100.0% | Sold out | Holders |
| Q4 2022 | 38 | $3.56K | <0.1% | +38 | New | Holders |
| Q3 2022 | 0 | $0 | 0.0% | −5,229−100.0% | Sold out | Holders |
| Q2 2022 | 5,229 | $565.0K | <0.1% | +5,229 | New | Holders |
| Q1 2022 | 0 | $0 | 0.0% | −41,892−100.0% | Sold out | Holders |
| Q4 2021 | 41,892 | $4.93M | 0.1% | +32,349+339.0% | Added | Holders |
| Q3 2021 | 9,543 | $559.0K | <0.1% | +7,707+419.8% | Added | Holders |
| Q2 2021 | 1,836 | $122.0K | <0.1% | −9,965−84.4% | Reduced | Holders |
| Q1 2021 | 11,801 | $1.64M | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.