Aquamarine
SuperinvestorAquamarine Zurich AG
- SEC CIK
- 0001953324
- Manager
- Guy Spier
- Style
- Value
- Latest filing
- Jul 10, 2026
Predecessor filersAquamarine Capital Management, LLC
MU holding history
Micron Technology Inc in every 13F filed by Aquamarine, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
MU overviewAll 13F holders of MUFull Q2 2026 holdings
- Shares (Q4 2025)
- 0
- Sold out in Q4 2025
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 13
- Since Q3 2022
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q4 2025 | 0 | $0 | 0.0% | −80,000−100.0% | Sold out | Holders |
| Q3 2025 | 80,000 | $13.4M | 4.2% | −120,000−60.0% | Reduced | Holders |
| Q2 2025 | 200,000 | $24.6M | 8.0% | 00.0% | Unchanged | Holders |
| Q1 2025 | 200,000 | $17.4M | 5.9% | 00.0% | Unchanged | Holders |
| Q4 2024 | 200,000 | $16.8M | 5.9% | 00.0% | Unchanged | Holders |
| Q3 2024 | 200,000 | $20.7M | 7.3% | 00.0% | Unchanged | Holders |
| Q2 2024 | 200,000 | $26.3M | 10.0% | 00.0% | Unchanged | Holders |
| Q1 2024 | 200,000 | $23.6M | 9.0% | 00.0% | Unchanged | Holders |
| Q4 2023 | 200,000 | $17.1M | 7.5% | 00.0% | Unchanged | Holders |
| Q3 2023 | 200,000 | $13.6M | 6.7% | 00.0% | Unchanged | Holders |
| Q2 2023 | 200,000 | $12.6M | 6.0% | 00.0% | Unchanged | Holders |
| Q1 2023 | 200,000 | $12.1M | 6.2% | 00.0% | Unchanged | Holders |
| Q4 2022 | 200,000 | $10.0M | 5.4% | 00.0% | Unchanged | Holders |
| Q3 2022 | 200,000 | $10.0M | 6.1% | – | No prior filing | Holders |