– Aquamarine Zurich AG Portfolio Activity & Recent Trades (Dec 31, 2025)
As of Dec 31, 2025, the Aquamarine Zurich AG portfolio activity showed several notable changes in holdings, according to the latest SEC 13F filing reported on Jan 15, 2026. The activity included new positions, additions to existing holdings, reductions, and complete exits, providing a clear view of how the portfolio evolved during the quarter.
During Q4 2025, the filing reported:
New Buys –
None reported
Increases –
None reported
Reductions – American Express Company, Berkshire Hathaway Inc. New, Mastercard Incorporated, Ferrari
Complete Exits – Alpha Metallurgical Resources, , Alibaba Group Holding Limited, Bank of America Corporation, Core Natural Resources, Alphabet Inc., and 2 more
These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.
| Date | Symbol | Name | Type | Change Qty | % Change | Value | Remaining |
|---|---|---|---|---|---|---|---|
Q4 2025 | AMR Alpha Metallurgical Resources, | Alpha Metallurgical Resources, | Sell - Position Exit | -8,000 | -100.0% | $0.00 | - |
Q4 2025 | AXP American Express Company | American Express Company | Sell | -145,000 | -69.0% | $24.05K | 65,000 |
Q4 2025 | BABA Alibaba Group Holding Limited | Alibaba Group Holding Limited | Sell - Position Exit | -47,500 | -100.0% | $0.00 | - |
Q4 2025 | BAC Bank of America Corporation | Bank of America Corporation | Sell - Position Exit | -767,845 | -100.0% | $0.00 | - |
Q4 2025 | BRK-B Berkshire Hathaway Inc. New | Berkshire Hathaway Inc. New | Sell | -43,000 | -30.6% | $49.06K | 97,600 |
Q4 2025 | CEIX Core Natural Resources | Core Natural Resources | Sell - Position Exit | -10,740 | -100.0% | $0.00 | - |
Q4 2025 | GOOGL Alphabet Inc. | Alphabet Inc. | Sell - Position Exit | -16,000 | -100.0% | $0.00 | - |
Q4 2025 | MA Mastercard Incorporated | Mastercard Incorporated | Sell | -25,750 | -39.2% | $22.84K | 40,000 |
Q4 2025 | MU Micron Technology, Inc. | Micron Technology, Inc. | Sell - Position Exit | -80,000 | -100.0% | $0.00 | - |
Q4 2025 | RACE Ferrari | Ferrari | Sell | -30,000 | -50.0% | $9.56K | 30,000 |
Q4 2025 | SRG Seritage Growth Properties | Seritage Growth Properties | Sell - Position Exit | -500,000 | -100.0% | $0.00 | - |
Q3 2025 | CEIX Core Natural Resources | Core Natural Resources | Buy | +2,640 | +32.6% | $897.00 | 10,740 |
Q3 2025 | MU Micron Technology, Inc. | Micron Technology, Inc. | Sell | -120,000 | -60.0% | $13.39K | 80,000 |
Q1 2025 | ARCH Arch Resources, Inc. | Arch Resources, Inc. | Sell - Position Exit | -8,100 | -100.0% | $0.00 | - |
Q1 2025 | CEIX Core Natural Resources | Core Natural Resources | Buy - Position Entry | +8,100 | - | $828.00 | 8,100 |
Q2 2024 | AMR Alpha Metallurgical Resources, | Alpha Metallurgical Resources, | Buy - Position Entry | +8,000 | - | $2.24K | 8,000 |
Q2 2024 | ARCH Arch Resources, Inc. | Arch Resources, Inc. | Buy - Position Entry | +8,100 | - | $1.23K | 8,100 |
Q1 2024 | RACE Ferrari | Ferrari | Sell | -20,000 | -25.0% | $26.16K | 60,000 |
Q4 2022 | GOOGL Alphabet Inc. | Alphabet Inc. | Buy | +15,200 | +1900.0% | $1.41K | 16,000 |
Q3 2022 | AXP American Express Company | American Express Company | Buy - Position Entry | +210,000 | - | $28.33K | 210,000 |
Q3 2022 | BABA Alibaba Group Holding Limited | Alibaba Group Holding Limited | Buy - Position Entry | +47,500 | - | $3.80K | 47,500 |
Q3 2022 | BAC Bank of America Corporation | Bank of America Corporation | Buy - Position Entry | +767,845 | - | $23.19K | 767,845 |
Q3 2022 | BRK-A Berkshire Hathaway Inc. | Berkshire Hathaway Inc. | Buy - Position Entry | +30 | - | $12.19K | 30 |
Q3 2022 | BRK-B Berkshire Hathaway Inc. New | Berkshire Hathaway Inc. New | Buy - Position Entry | +140,600 | - | $37.54K | 140,600 |
Q3 2022 | DJCO Daily Journal Corp. (S.C.) | Daily Journal Corp. (S.C.) | Buy - Position Entry | +11,500 | - | $2.95K | 11,500 |
Q3 2022 | GOOGL Alphabet Inc. | Alphabet Inc. | Buy - Position Entry | +800 | - | $1.53K | 800 |
Q3 2022 | MA Mastercard Incorporated | Mastercard Incorporated | Buy - Position Entry | +65,750 | - | $18.70K | 65,750 |
Q3 2022 | MCO Moody's Corporation | Moody's Corporation | Buy - Position Entry | +27,000 | - | $6.56K | 27,000 |
Q3 2022 | MU Micron Technology, Inc. | Micron Technology, Inc. | Buy - Position Entry | +200,000 | - | $10.02K | 200,000 |
Q3 2022 | RACE Ferrari | Ferrari | Buy - Position Entry | +80,000 | - | $15.03K | 80,000 |