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 8 of 17 rows. Rows without a quote are marked unavailable.
| 1 | - | BERKSHIRE HATHAWAY INC DELCUSIP 84670702 | 16.93% | - | 140,600 | $19.95M | No quote | No quote |
| 2 | AXP | AMERICAN EXPRESS CO | 14.20% | - | 272,430 | $16.73M | $61.40 | No quote |
| 3 | FCAU | FIAT CHRYSLER AUTOMOBILES N | 13.72% | - | 2,000,000 | $16.16M | No quote | No quote |
| 4 | GMWSB | GENERAL MTRS CO | 11.60% | - | 1,000,000 | $13.66M | No quote | No quote |
| 5 | RACE | FERRARI N V | 7.05% | New | 200,000 | $8.31M | $41.53 | No quote |
| 6 | BAC | BANK AMER CORP | 6.77% | - | 590,000 | $7.98M | $13.52 | No quote |
| 7 | - | BERKSHIRE HATHAWAY INC DELCUSIP 84670108 | 5.44% | - | 30 | $6.4M | No quote | No quote |
| 8 | MA | MASTERCARD INC | 5.27% | - | 65,750 | $6.21M | $94.49 | No quote |
| 9 | WFC | WELLS FARGO & CO NEW | 4.72% | - | 115,000 | $5.56M | $48.36 | No quote |
| 10 | C | CITIGROUP INC | 3.76% | - | 106,000 | $4.43M | $41.75 | No quote |
| 11 | SRG | SERITAGE GROWTH PPTYS | 3.18% | New | 75,000 | $3.75M | No quote | No quote |
| 12 | PKX | POSCO | 2.81% | - | 70,000 | $3.31M | No quote | No quote |
| 13 | MCO | MOODYS CORP | 2.05% | New | 25,000 | $2.41M | $96.56 | No quote |
| 14 | WFCWS | WELLS FARGO & CO NEW | 1.46% | - | 110,000 | $1.72M | No quote | No quote |
| 15 | BAC | BANK AMER CORP | 1.03% | - | 320,000 | $1.22M | $3.81 | No quote |
| 16 | ENLC | ENLINK MIDSTREAM LLC | 0.01% | New | 719 | $8K | No quote | No quote |
| 17 | ZINC | HORSEHEAD HOLDING CORP | - | Sold | 0 | $0 | No quote | No quote |