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
- +13.66%
- 3-year
- +68.33%
- 5-year
- +72.54%
- 3-year vs S&P 500
- +0.40%
- 5-year vs S&P 500
- +0.56%
- 5-year top 5
- +65.63%
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 2026-06-06 from SEC 13F data.
Live quotes available for 6 of 13 rows. Rows without a quote are marked unavailable.
| 1 | FCAU | FIAT CHRYSLER AUTOMOBILES | 21.62% | - | 2,000,000 | $25.95M | No quote | No quote |
| 2 | AXP | AMERICAN EXPRESS CO | 16.83% | - | 272,430 | $20.2M | $74.13 | No quote |
| 3 | - | BERKSHIRE HATHAWAY INC. DELCUSIP 84670702 | 15.28% | - | 140,600 | $18.33M | No quote | No quote |
| 4 | GMWSB | GENERAL MOTORS CO | 10.92% | - | 1,000,000 | $13.11M | No quote | No quote |
| 5 | BAC | BANK OF AMERICA CORP | 7.66% | - | 590,000 | $9.19M | $15.58 | No quote |
| 6 | MA | MASTERCARD INC | 4.94% | - | 65,750 | $5.93M | $90.11 | No quote |
| 7 | WFC | WELLS FARGO & CO NEW | 4.92% | - | 115,000 | $5.91M | $51.35 | No quote |
| 8 | - | BERKSHIRE HATHAWAY INC. DELCUSIP 84670108 | 4.88% | - | 30 | $5.86M | No quote | No quote |
| 9 | C | CITIGROUP INC | 4.38% | - | 106,000 | $5.26M | $49.61 | No quote |
| 10 | ZINC | HORSEHEAD HOLDING CORP | 3.34% | - | 1,320,000 | $4.01M | No quote | No quote |
| 11 | PKX | POSCO | 2.04% | - | 70,000 | $2.45M | No quote | No quote |
| 12 | WFCWS | WELLS FARGO & CO | 1.66% | - | 110,000 | $1.99M | No quote | No quote |
| 13 | BAC | BANK OF AMERICA CORP | 1.53% | - | 320,000 | $1.83M | $5.73 | No quote |