Aquamarine Capital (Aquamarine Zurich)
In its 13F for Q3 2024 (holdings as of September 30, 2024, filed October 16, 2024), Guy Spier's Aquamarine Capital (Aquamarine Zurich) reported 14 stock positions worth $285.6 million. Its top holding was Berkshire Hathaway Class B (BRK.B) at 22.7% of the portfolio, followed by American Express (AXP, 19.9%) and Mastercard Class A (MA, 11.4%). Its holdings were unchanged from Q2 2024.
- Most Recent 13F
- Q2 2026
- Notable People
- Guy Spier
- Location
- ZURICH, V8
- CIK
- 0001953324
- Portfolio Value
- $285.6M (Q3 2024)
- SEC Filing
- 0001953324-24-000005 ↗ filed Oct 16, 2024
Holdings Value
Holdings 14 stocks · $285.6M
| BRK.B Berkshire Hathaway Inc. Class B | 22.66% | 140,600 | $64.7M | No change |
| AXP American Express Co. | 19.94% | 210,000 | $57.0M | No change |
| MA Mastercard Inc. Class A | 11.37% | 65,750 | $32.5M | No change |
| BAC Bank of America Corp. filed as BANK AMERICA CORP | 10.67% | 767,845 | $30.5M | No change |
| RACE Ferrari NV | 9.82% | 60,000 | $28.0M | No change |
| MU Micron Technology Inc. | 7.26% | 200,000 | $20.7M | No change |
| BRK.A Berkshire Hathaway Inc. Class A | 7.26% | 30 | $20.7M | No change |
| MCO Moody's Corp. | 4.49% | 27,000 | $12.8M | No change |
| DJCO Daily Journal Corp. | 1.97% | 11,500 | $5.6M | No change |
| BABA Alibaba Group Holding-SP ADR | 1.77% | 47,500 | $5.0M | No change |
| GOOGL Alphabet Inc. Class A | 0.93% | 16,000 | $2.7M | No change |
| SRG Seritage Growth Prop- A | 0.81% | 500,000 | $2.3M | No change |
| AMR Alpha Metallurgical Resource | 0.66% | 8,000 | $1.9M | No change |
| ARCH Arch Resources Inc. | 0.39% | 8,100 | $1.1M | No change |
Portfolio Sells Q2 2024 → Q3 2024
| None this quarter. | |||
Portfolio Buys Q2 2024 → Q3 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 |