Castleark Management LLC
- SEC CIK
- 0001106832
- Latest filing
- Aug 14, 2026
IRTC holding history
iRhythm Holdings, Inc. in every 13F filed by Castleark Management LLC, 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)
- 0
- Sold out in Q2 2026
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 8
- Since Q1 2022
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 0 | $0 | 0.0% | −27,193−100.0% | Sold out | Holders |
| Q1 2026 | 27,193 | $3.21M | 0.1% | −23,000−45.8% | Reduced | Holders |
| Q4 2025 | 50,193 | $8.91M | 0.3% | −8,200−14.0% | Reduced | Holders |
| Q3 2025 | 58,393 | $10.0M | 0.3% | +10,213+21.2% | Added | Holders |
| Q2 2025 | 48,180 | $7.42M | 0.2% | −110−0.2% | Reduced | Holders |
| Q1 2025 | 48,290 | $5.05M | 0.2% | +48,290 | New | Holders |
| Q4 2022 | 0 | $0 | 0.0% | −36,100−100.0% | Sold out | Holders |
| Q3 2022 | 36,100 | $4.52M | 0.3% | −3,710−9.3% | Reduced | Holders |
| Q2 2022 | 39,810 | $4.30M | 0.2% | −11,380−22.2% | Reduced | Holders |
| Q1 2022 | 51,190 | $8.06M | 0.3% | +51,190 | New | Holders |