Aquamarine Capital (Aquamarine Zurich)
In its 13F for Q4 2024 (holdings as of December 31, 2024, filed January 24, 2025), Guy Spier's Aquamarine Capital (Aquamarine Zurich) reported 14 stock positions worth $287.6 million. Its top holding was Berkshire Hathaway Class B (BRK.B) at 22.2% of the portfolio, followed by American Express (AXP, 21.7%) and Mastercard Class A (MA, 12.0%). Its holdings were unchanged from Q3 2024.
- Most Recent 13F
- Q2 2026
- Notable People
- Guy Spier
- Location
- ZURICH, V8
- CIK
- 0001953324
- Portfolio Value
- $287.6M (Q4 2024)
- SEC Filing
- 0001953324-25-000001 ↗ filed Jan 24, 2025
Holdings Value
Holdings 14 stocks · $287.6M
| BRK.B Berkshire Hathaway Inc. Class B | 22.16% | 140,600 | $63.7M | No change |
| AXP American Express Co. | 21.67% | 210,000 | $62.3M | No change |
| MA Mastercard Inc. Class A | 12.04% | 65,750 | $34.6M | No change |
| BAC Bank of America Corp. filed as BANK AMERICA CORP | 11.73% | 767,845 | $33.7M | No change |
| RACE Ferrari NV | 8.60% | 60,000 | $24.7M | No change |
| BRK.A Berkshire Hathaway Inc. Class A | 7.10% | 30 | $20.4M | No change |
| MU Micron Technology Inc. | 5.85% | 200,000 | $16.8M | No change |
| MCO Moody's Corp. | 4.44% | 27,000 | $12.8M | No change |
| DJCO Daily Journal Corp. | 2.27% | 11,500 | $6.5M | No change |
| BABA Alibaba Group Holding-SP ADR | 1.40% | 47,500 | $4.0M | No change |
| GOOGL Alphabet Inc. Class A | 1.05% | 16,000 | $3.0M | No change |
| SRG Seritage Growth Prop- A | 0.72% | 500,000 | $2.1M | No change |
| AMR Alpha Metallurgical Resource | 0.56% | 8,000 | $1.6M | No change |
| ARCH Arch Resources Inc. | 0.40% | 8,100 | $1.1M | No change |
Portfolio Sells Q3 2024 → Q4 2024
| None this quarter. | |||
Portfolio Buys Q3 2024 → Q4 2024
| None this quarter. | |||
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 7 | $144.1M | BRK.B, BRK.A, AXP, MA, MCO |
| Q1 2026 | 7 | $135.3M | BRK.B, BRK.A, MA, AXP, MCO |
| Q4 2025 | 7 | $147.5M | BRK.B, AXP, MA, BRK.A, MCO |
| Q3 2025 | 14 | $317.4M | BRK.B, AXP, BAC, MA, RACE |
| Q2 2025Amended | 14 | $309.8M | BRK.B, AXP, MA, BAC, RACE |
| Q1 2025Amended | 14 | $293.7M | BRK.B, AXP, MA, BAC, BRK.A |
| Q4 2024 | 14 | $287.6M | BRK.B, AXP, MA, BAC, RACE |
| Q3 2024 | 14 | $285.6M | BRK.B, AXP, MA, BAC, RACE |
| Q2 2024 | 14 | $262.6M | BRK.B, AXP, BAC, MA, MU |
| Q1 2024 | 12 | $261.9M | BRK.B, AXP, MA, BAC, RACE |