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 | 21.30% | - | 200,000 | $31.23M | $156.15 | |
| 2 | BRK-B | BERKSHIRE HATHAWAY INC DEL | 17.53% | - | 140,600 | $25.71M | $182.83 | |
| 3 | AXP | AMERICAN EXPRESS CO | 12.26% | Reduce -5.6% | 210,000 | $17.98M | $85.61 | |
| 4 | BAC | BK OF AMERICA CORP | 11.12% | - | 767,845 | $16.3M | $21.23 | |
| 5 | MA | MASTERCARD INC | 10.83% | - | 65,750 | $15.88M | $241.57 | |
| 6 | FCAU | FIAT CHRYSLER AUTOMOBILES N | 8.90% | Reduce -10.0% | 1,800,000 | $13.05M | No quote | No quote |
| 7 | BRK-A | BERKSHIRE HATHAWAY INC DEL | 5.56% | - | 30 | $8.16M | $272000.00 | |
| 8 | MCO | MOODYS CORP | 3.61% | - | 25,000 | $5.29M | $211.52 | |
| 9 | MU | MICRON TECHNOLOGY INC | 3.44% | - | 120,000 | $5.05M | $42.06 | |
| 10 | WFC | WELLS FARGO CO NEW | 2.97% | - | 151,741 | $4.36M | $28.70 | |
| 11 | SRG | SERITAGE GROWTH PPTYS | 2.48% | - | 400,000 | $3.64M | No quote | No quote |
| 12 | TOO | TEEKAY OFFSHORE PARTNERS L P | - | Sold | 0 | $0 | No quote | No quote |