Not yet filed. No Q3 2026 Form 13F from Aquamarine Capital has been detected on SEC EDGAR yet. The deadline for the quarter ended Sep 30, 2026 is Monday, Nov 16, 2026.
From the fund's 2026 Q2 Form 13F (filed Jul 10, 2026) — the latest quarter fully processed on this site.
| Stock | Shares | Portfolio weight |
|---|---|---|
| BRK.B · BERKSHIRE HATHAWAY INC | 97,600 | 33.89% |
| BRK.A · BERKSHIRE HATHAWAY INC | 30 | 15.59% |
| AXP · AMERICAN EXPRESS CO | 65,000 | 15.26% |
| MA · Mastercard Inc | 40,000 | 14.26% |
| MCO · MOODYS CORP /DE/ | 27,000 | 8.49% |
| RACE · Ferrari N.V. | 30,000 | 7.71% |
| DJCO · DAILY JOURNAL CORP | 11,500 | 4.80% |
Full record: Aquamarine Capital fund page · manager profile & 13F-clone record · Q3 2026 season tracker.
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