Aquamarine Zurich AG Portfolio Position Sizes (Q2 2026)

As of Jun 30, 2026, the Aquamarine Zurich AG portfolio balances reported a total equity value of $144,091 across 7 publicly traded holdings. These balances reflect the most recent SEC 13F filing dated Jul 10, 2026, providing an updated snapshot of assets under management.

The portfolio balances highlight BERKSHIRE HATHAWAY INC DEL (BRK-B) as the single largest position, accounting for 33.9% of total equity value, followed by BERKSHIRE HATHAWAY INC DEL (BRK-A), AMERICAN EXPRESS CO (AXP), MASTERCARD INCORPORATED (MA), and others. Collectively, the top five holdings represent 87.5% of the portfolio, showing how capital is distributed among core positions and long-term investments.