Market Value Trend ($B)
37 periods
Aquamarine Capital
13F Holdings and Portfolio Analysis
Guy Spier 2026 Q2 13F holdings, quarterly changes, portfolio value trend and position weight distribution.
Aquamarine Capital Overview
Aquamarine Capital held 7 stocks in 2026 Q2, with total market value around $0.14B.
Aquamarine Capital's top five holdings in 2026 Q2: BRK.B(BERKSHIRE HA...) 33.89%, BRK.A(BERKSHIRE HA...) 15.59%, AXP(American Exp...) 15.26%, MA(Mastercard I...) 14.26%, MCO(Moody's Corp...) 8.49%.
- Portfolio Value
- $0.14B
- Current Holdings
- 7 stocks
- New / Increased
- 0 / 0
- Reduced / Exited
- 0 / 0
Current Holdings
| 1 | BRK.BBERKSHIRE HA... | Common Stock | 0.05 | 33.89% | 0.10 - | 0.00 | $500.39 | $505.00 +0.92% | $162.98 | 7.25 | +$0.03B+209.85% | Held |
| 2 | BRK.ABERKSHIRE HA... | Common Stock | 0.02 | 15.59% | 0.00 - | 0.00 | $748866.67 | $757985.01 +1.22% | $244133.33 | 7.25 | +$0.02B+210.48% | Held |
| 3 | AXPAmerican Exp... | Common Stock | 0.02 | 15.26% | 0.07 - | 0.00 | $338.25 | $333.20 -1.49% | $74.08 | 7.25 | +$0.02B+349.78% | Held |
| 4 | MAMastercard I... | Common Stock | 0.02 | 14.26% | 0.04 - | 0.00 | $513.60 | $595.30 +15.91% | $86.16 | 9.25 | +$0.02B+590.93% | Held |
| 5 | MCOMoody's Corp... | Common Stock | 0.01 | 8.49% | 0.03 - | 0.00 | $452.93 | $514.95 +13.69% | $109.76 | 8.00 | +$0.01B+369.17% | Held |
| 6 | RACEFERRARI N V ... | Common Stock | 0.01 | 7.71% | 0.03 - | 0.00 | $370.47 | $420.54 +13.52% | $41.53 | 8.00 | +$0.01B+912.50% | Held |
| 7 | DJCODAILY JOURNA... | Common Stock | 0.01 | 4.80% | 0.01 - | 0.00 | $601.22 | $623.68 +3.74% | $338.52 | 2.75 | +$0.00B+84.24% | Held |
1–7 / 7
"Holding Period (yrs)" is the latest uninterrupted holding duration, calculated by dividing continuous reported quarters by 4.
Cost basis is an estimate and can differ materially from the actual cost, especially in edge cases.
Cost basis estimate: from the latest uninterrupted holding period, new or increased shares are added to the cost pool at the report price; reductions remove shares at the then-average cost. Example: buy 100 shares at $10 in Q1 and add 50 shares at $16 in Q2, estimated cost basis is (100 x 10 + 50 x 16) / 150 = $12 per share.
Return shows estimated dollar return on top and percentage return below. It uses the previous close when available, otherwise report price.
Security Type identifies common stock, funds, ADRs, derivatives, and convertible securities. A convertible security CUSIP is not its issuer's common-stock ticker.
Portfolio Visuals
Track portfolio value, position weights and Top 10 history.
Loading portfolio visuals...