Guy Spier (Aquamarine Capital) portfolio: Q2 2026 13F
Every US-listed position Aquamarine Capital reported in its 13F for Q2 2026, the quarter ended Jun 30, 2026, filed with the SEC on Jul 10, 2026. 7 positions at the quarter end, with none opened or closed during it.
Holdings at Q2 2026
| Ticker | Company | Allocation | Value | Shares | Change |
|---|---|---|---|---|---|
| BRK-B | Berkshire Hathaway Inc | 33.89% | $48.84M | 97,600 | Unchanged |
| BRK-A | Berkshire Hathaway Inc | 15.59% | $22.47M | 30 | Unchanged |
| AXP | American Express Co | 15.26% | $21.99M | 65,000 | Unchanged |
| MA | Mastercard Inc | 14.26% | $20.54M | 40,000 | Unchanged |
| MCO | Moody's Corp | 8.49% | $12.23M | 27,000 | Unchanged |
| RACE | Ferrari N.V. | 7.71% | $11.11M | 30,000 | Unchanged |
| DJCO | Daily Journal Corp | 4.80% | $6.91M | 11,500 | Unchanged |
About these holdings
The 13F on record for Guy Spier (Aquamarine Capital), filed on Jul 10, 2026, reports 7 positions as of Jun 30, 2026. The largest is Berkshire Hathaway Inc (BRK-B) at 33.9% of the reported portfolio, followed by Berkshire Hathaway Inc (BRK-A, 15.6%) and American Express Co (AXP, 15.3%). The three largest make up 64.7% of it. Every position is unchanged from the previous quarter's filing.
Berkshire Hathaway Inc (BRK-B), the largest position, is also held by 21 other investors tracked here. Of those, Bill Gates, Christopher Bloomstran, Li Lu and Wallace Weitz hold the most of it as a share of their own portfolios. It is also the largest position of Christopher Bloomstran, Wallace Weitz and Bill Gates.
Other investors
Valley Forge CapitalNelson PeltzClifford SosinLi LuGreg AlexanderJohn PaulsonNorbert LouAltaRock Partners