Portfolio Value Over Time
Current Holdings for Aquamarine Capital
|
Stock
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Shares | Value | % of Portfolio | Change | Est. Return |
|---|---|---|---|---|---|
|
BRK-B|BERKSHIRE HATHAWAY INC DEL
|
97.6K | $49.1M | TRIM -30.6% | — | |
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AXP|AMERICAN EXPRESS CO
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65.0K | $24.0M | TRIM -69.0% | — | |
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MA|MASTERCARD INCORPORATED
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40.0K | $22.8M | TRIM -39.2% | — | |
|
BRK-A|BERKSHIRE HATHAWAY INC DEL
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30 | $22.6M | — | — | |
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DUT|MOODYS CORP
|
27.0K | $13.8M | — | — | |
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RACE|FERRARI N V
|
30.0K | $9.6M | TRIM -50.0% | — | |
|
DJCO|DAILY JOURNAL CORP
|
11.5K | $5.6M | — | — |
Trading Activity for Aquamarine Capital
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Stock
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Action | Change | Shares After | Value | Est. Return |
|---|---|---|---|---|---|
| 2025-Q4 | |||||
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BRK-B|BERKSHIRE HATHAWAY INC DEL
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SELL | -30.58% | 97.6K | $49M | — |
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AXP|AMERICAN EXPRESS CO
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SELL | -69.05% | 65.0K | $24M | — |
|
BAC|BANK AMERICA CORP
|
SELL | EXIT | — | — | — |
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MA|MASTERCARD INCORPORATED
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SELL | -39.16% | 40.0K | $23M | — |
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RACE|FERRARI N V
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SELL | -50.00% | 30.0K | $10M | — |
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MU|MICRON TECHNOLOGY INC
|
SELL | EXIT | — | — | — |
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BABA|ALIBABA GROUP HLDG LTD
|
SELL | EXIT | — | — | — |
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GOOGL|ALPHABET INC
|
SELL | EXIT | — | — | — |
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SRG|SERITAGE GROWTH PPTYS
|
SELL | EXIT | — | — | — |
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AMR|ALPHA METALLURGICAL RESOUR I
|
SELL | EXIT | — | — | -45.6% |
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CNR|CORE NATURAL RESOURCES INC
|
SELL | EXIT | — | — | +6.1% |
| 2025-Q3 | |||||
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MU|MICRON TECHNOLOGY INC
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SELL | -60.00% | 80.0K | $13M | — |
| 2025-Q2 | |||||
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CNR|CORE NATURAL RESOURCES INC
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BUY | +32.59% | 10.7K | $828000 | — |
| 2025-Q1 | |||||
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ARCH1USD|ARCH RESOURCES INC
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SELL | EXIT | — | — | — |
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CNR|CORE NATURAL RESOURCES INC
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BUY | NEW | 8.1K | $828000 | — |
| 2024-Q2 | |||||
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AMR|ALPHA METALLURGICAL RESOUR I
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BUY | NEW | 8.0K | $2M | — |
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ARCH1USD|ARCH RESOURCES INC
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BUY | NEW | 8.1K | $1M | — |
| 2024-Q1 | |||||
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RACE|FERRARI N V
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SELL | -25.00% | 60.0K | $26M | — |
| 2022-Q4 | |||||
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GOOGL|ALPHABET INC
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BUY | NEW | 16.0K | $1M | — |
Closed Positions for Aquamarine Capital
|
Stock
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|
Held Period | Cost Basis | Sale Proceeds | Realized Gain | Return | CAGR |
|---|---|---|---|---|---|---|
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AMR|ALPHA METALLURGICAL RESOUR I
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2024-Q2 → 2025-Q4 (1.5y) | $2.5M | $1.3M | $-1.1M | -45.6% | -33.4% |
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CNR|CORE NATURAL RESOURCES INC
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2025-Q1 → 2025-Q4 (0.7y) | $850.5K | $902.6K | $+52.1K | +6.1% | +8.3% |