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.
Get email alerts when Guy Spier files a new 13F — sign in or create a free account.
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 | 15.59% | - | 200,000 | $30.86M | $154.28 | No quote |
| 2 | BRK-B | BERKSHIRE HATHAWAY INC DEL | 14.77% | - | 140,600 | $29.25M | $208.02 | No quote |
| 3 | AXP | AMERICAN EXPRESS CO | 13.29% | - | 222,430 | $26.31M | $118.28 | No quote |
| 4 | FCAU | FIAT CHRYSLER AUTOMOBILES N | 13.07% | - | 2,000,000 | $25.88M | No quote | No quote |
| 5 | BAC | BANK AMER CORP | 11.31% | - | 767,845 | $22.4M | $29.17 | No quote |
| 6 | MA | MASTERCARD INC | 9.02% | - | 65,750 | $17.86M | $271.57 | No quote |
| 7 | SRG | SERITAGE GROWTH PPTYS | 8.59% | Add +33.3% | 400,000 | $17M | No quote | No quote |
| 8 | BRK-A | BERKSHIRE HATHAWAY INC DEL | 4.73% | - | 30 | $9.36M | $311833.33 | No quote |
| 9 | WFC | WELLS FARGO CO NEW | 3.87% | - | 151,741 | $7.65M | $50.44 | No quote |
| 10 | MU | MICRON TECHNOLOGY INC | 2.60% | New | 120,000 | $5.14M | $42.85 | No quote |
| 11 | MCO | MOODYS CORP | 2.59% | - | 25,000 | $5.12M | $204.84 | No quote |
| 12 | TOO | TEEKAY OFFSHORE PARTNERS L P | 0.59% | - | 1,000,000 | $1.16M | No quote | No quote |