Guy Spier - Aquamarine Capital
As of Q2 2026, Guy Spier reported 7 long-equity positions worth $144.09M in aggregate.
Copy-investor backtest
- Latest quarter
- +3.96%
- 1-year
- +2.66%
- 3-year
- +75.51%
- 5-year
- +66.51%
- 3-year vs S&P 500
- +1.42%
- 5-year vs S&P 500
- +1.79%
- 5-year top 5
- +55.17%
Return from mechanically copying the disclosed 13F equity portfolio after each filing and rebalancing at the next. The vs S&P 500 figures subtract SPY over that manager's own rebalance dates, so both sides cover the same days; both are price return, excluding dividends. Method & limitations.
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Updated 2026-09-19 from SEC 13F data.
Live quotes available for 9 of 12 rows. Rows without a quote are marked unavailable.
| 1 | RACE | FERRARI N V | 15.27% | - | 200,000 | $33.17M | $165.85 | No quote |
| 2 | BRK-B | BERKSHIRE HATHAWAY INC DEL | 14.66% | - | 140,600 | $31.85M | $226.50 | No quote |
| 3 | FCAU | FIAT CHRYSLER AUTOMOBILES N | 13.62% | - | 2,000,000 | $29.59M | No quote | No quote |
| 4 | AXP | AMERICAN EXPRESS CO | 12.74% | - | 222,430 | $27.69M | $124.49 | No quote |
| 5 | BAC | BANK AMER CORP | 12.45% | - | 767,845 | $27.04M | $35.22 | No quote |
| 6 | MA | MASTERCARD INC | 9.04% | - | 65,750 | $19.63M | $298.59 | No quote |
| 7 | SRG | SERITAGE GROWTH PPTYS | 7.38% | - | 400,000 | $16.03M | No quote | No quote |
| 8 | BRK-A | BERKSHIRE HATHAWAY INC DEL | 4.69% | - | 30 | $10.19M | $339600.00 | No quote |
| 9 | WFC | WELLS FARGO CO NEW | 3.76% | - | 151,741 | $8.16M | $53.80 | No quote |
| 10 | MU | MICRON TECHNOLOGY INC | 2.97% | - | 120,000 | $6.45M | $53.78 | No quote |
| 11 | MCO | MOODYS CORP | 2.73% | - | 25,000 | $5.94M | $237.40 | No quote |
| 12 | TOO | TEEKAY OFFSHORE PARTNERS L P | 0.71% | - | 1,000,000 | $1.54M | No quote | No quote |