Aquamarine Capital (Aquamarine Zurich)

In its 13F for Q2 2024 (holdings as of June 30, 2024, filed July 11, 2024), Guy Spier's Aquamarine Capital (Aquamarine Zurich) reported 14 stock positions worth $262.6 million. Its top holding was Berkshire Hathaway Class B (BRK.B) at 21.8% of the portfolio, followed by American Express (AXP, 18.5%) and Bank of America (BAC, 11.6%). Compared with Q1 2024, it opened 2 new positions. The biggest buy was a new position in Alpha Metallurgical Resource (AMR).

Most Recent 13F
Q2 2026
Notable People
Guy Spier
Location
ZURICH, V8
CIK
0001953324
Portfolio Value
$262.6M (Q2 2024)
SEC Filing
0001953324-24-000004 ↗ filed Jul 11, 2024

Holdings Value

0$100.0M$200.0M$300.0M$400.0M Q1 2024: $261.9M Q1 2024 Q2 2024: $262.6M $262.6M Q2 2024 Q3 2024: $285.6M Q3 2024 Q4 2024: $287.6M Q4 2024 Q1 2025: $293.7M Q1 2025 Q2 2025: $309.8M Q2 2025 Q3 2025: $317.4M Q3 2025 Q4 2025: $147.5M Q4 2025 Q1 2026: $135.3M Q1 2026 Q2 2026: $144.1M Q2 2026

Holdings 14 stocks · $262.6M
BRK.B Berkshire Hathaway Inc. Class B 21.78% 140,600 $57.2M No change
AXP American Express Co. 18.52% 210,000 $48.6M No change
BAC Bank of America Corp. filed as BANK AMERICA CORP 11.63% 767,845 $30.5M No change
MA Mastercard Inc. Class A 11.05% 65,750 $29.0M No change
MU Micron Technology Inc. 10.02% 200,000 $26.3M No change
RACE Ferrari NV 9.32% 60,000 $24.5M No change
BRK.A Berkshire Hathaway Inc. Class A 7.00% 30 $18.4M No change
MCO Moody's Corp. 4.33% 27,000 $11.4M No change
DJCO Daily Journal Corp. 1.73% 11,500 $4.5M No change
BABA Alibaba Group Holding-SP ADR 1.30% 47,500 $3.4M No change
GOOGL Alphabet Inc. Class A 1.11% 16,000 $2.9M No change
SRG Seritage Growth Prop- A 0.89% 500,000 $2.3M No change
AMR Alpha Metallurgical Resource 0.85% 8,000 $2.2M New
ARCH Arch Resources Inc. 0.47% 8,100 $1.2M New

Portfolio Sells Q1 2024 → Q2 2024
None this quarter.

Portfolio Buys Q1 2024 → Q2 2024
AMR Alpha Metallurgical Resource New 0.85% +0.85
ARCH Arch Resources Inc. New 0.47% +0.47

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 7$144.1MBRK.B, BRK.A, AXP, MA, MCO
Q1 2026 7$135.3MBRK.B, BRK.A, MA, AXP, MCO
Q4 2025 7$147.5MBRK.B, AXP, MA, BRK.A, MCO
Q3 2025 14$317.4MBRK.B, AXP, BAC, MA, RACE
Q2 2025Amended 14$309.8MBRK.B, AXP, MA, BAC, RACE
Q1 2025Amended 14$293.7MBRK.B, AXP, MA, BAC, BRK.A
Q4 2024 14$287.6MBRK.B, AXP, MA, BAC, RACE
Q3 2024 14$285.6MBRK.B, AXP, MA, BAC, RACE
Q2 2024 14$262.6MBRK.B, AXP, BAC, MA, MU
Q1 2024 12$261.9MBRK.B, AXP, MA, BAC, RACE