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 8 of 16 rows. Rows without a quote are marked unavailable.
| 1 | - | BERKSHIRE HATHAWAY INC DELCUSIP 84670702 | 16.19% | - | 140,600 | $20.31M | No quote | No quote |
| 2 | AXP | AMERICAN EXPRESS CO | 13.90% | - | 272,430 | $17.45M | $64.04 | No quote |
| 3 | GMWSB | GENERAL MTRS CO | 11.04% | - | 1,000,000 | $13.86M | No quote | No quote |
| 4 | FCAU | FIAT CHRYSLER AUTOMOBILES N | 10.12% | - | 2,000,000 | $12.7M | No quote | No quote |
| 5 | RACE | FERRARI N V | 8.28% | - | 200,000 | $10.39M | $51.97 | No quote |
| 6 | BAC | BANK AMER CORP | 7.36% | - | 590,000 | $9.23M | $15.65 | No quote |
| 7 | SRG | SERITAGE GROWTH PPTYS | 7.27% | Add +80.0% | 180,000 | $9.12M | No quote | No quote |
| 8 | MA | MASTERCARD INCORPORATED | 5.33% | - | 65,750 | $6.69M | $101.76 | No quote |
| 9 | - | BERKSHIRE HATHAWAY INC DELCUSIP 84670108 | 5.17% | - | 30 | $6.49M | No quote | No quote |
| 10 | WFC | WELLS FARGO & CO NEW | 4.06% | - | 115,000 | $5.09M | $44.28 | No quote |
| 11 | C | CITIGROUP INC | 3.99% | - | 106,000 | $5.01M | $47.23 | No quote |
| 12 | PKX | POSCO | 2.85% | - | 70,000 | $3.58M | No quote | No quote |
| 13 | MCO | MOODYS CORP | 2.16% | - | 25,000 | $2.71M | $108.28 | No quote |
| 14 | BAC | BANK AMER CORP | 1.17% | - | 320,000 | $1.46M | $4.58 | No quote |
| 15 | WFCWS | WELLS FARGO & CO NEW | 1.10% | - | 110,000 | $1.38M | No quote | No quote |
| 16 | ENLC | ENLINK MIDSTREAM LLC | 0.01% | - | 719 | $12K | No quote | No quote |