Castleark Management LLC
- SEC CIK
- 0001106832
- Latest filing
- Aug 14, 2026
RIG holding history
Transocean Ltd. 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.
RIG overviewAll 13F holders of RIGFull Q2 2026 holdings
- Shares (Q2 2026)
- 1,813,160
- Value
- $8.87M
- % of portfolio
- 0.2%
- Quarters held
- 8
- Since Q3 2023
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,813,160 | $8.87M | 0.2% | +976,040+116.6% | Added | Holders |
| Q1 2026 | 837,120 | $5.55M | 0.2% | −304,570−26.7% | Reduced | Holders |
| Q4 2025 | 1,141,690 | $4.72M | 0.1% | +1,141,690 | New | Holders |
| Q4 2024 | 0 | $0 | 0.0% | −679,750−100.0% | Sold out | Holders |
| Q3 2024 | 679,750 | $2.89M | 0.1% | +470,950+225.6% | Added | Holders |
| Q2 2024 | 208,800 | $1.12M | <0.1% | −208,800−50.0% | Reduced | Holders |
| Q1 2024 | 417,600 | $2.62M | 0.1% | +372,380+823.5% | Added | Holders |
| Q4 2023 | 45,220 | $287.1K | <0.1% | −212,530−82.5% | Reduced | Holders |
| Q3 2023 | 257,750 | $2.12M | 0.1% | +257,750 | New | Holders |