Guy Spier - Aquamarine Capital Management
| History | Stock | Activity ▼ | Share change | % change to portfolio |
|---|---|---|---|---|
| Q4 2025 | ||||
| ☰ | BRK.B - Berkshire Hathaway CL B | Reduce 30.58% | 43,000 | 6.81 |
| ☰ | MA - Mastercard Inc. | Reduce 39.16% | 25,750 | 4.62 |
| ☰ | RACE - Ferrari N.V. | Reduce 50.00% | 30,000 | 4.57 |
| ☰ | AXP - American Express Co. | Reduce 69.05% | 145,000 | 15.18 |
| ☰ | BAC - Bank of America Corp. | Sell 100.00% | 767,845 | 12.48 |
| ☰ | MU - Micron Technology, Inc. | Sell 100.00% | 80,000 | 4.22 |
| ☰ | BABA - Alibaba Group Holdings Ltd. | Sell 100.00% | 47,500 | 2.68 |
| ☰ | GOOGL - Alphabet Inc. | Sell 100.00% | 16,000 | 1.23 |
| ☰ | SRG - Seritage Growth Properties | Sell 100.00% | 500,000 | 0.67 |
| ☰ | AMR - Alpha Metallurgical Resources, Inc. | Sell 100.00% | 8,000 | 0.41 |
| ☰ | CNR - Core Natural Resources, Inc. | Sell 100.00% | 10,740 | 0.28 |
| Q3 2025 | ||||
| ☰ | MU - Micron Technology, Inc. | Reduce 60.00% | 120,000 | 4.77 |
| Q1 2025 | ||||
| ☰ | ARCH - Arch Resources Inc | Sell 100.00% | 8,100 | 0.40 |
| Q1 2024 | ||||
| ☰ | RACE - Ferrari N.V. | Reduce 25.00% | 20,000 | 2.95 |
| Q2 2022 | ||||
| ☰ | TWTR - Twitter Inc | Sell 100.00% | 30,000 | 0.53 |
| Q2 2021 | ||||
| ☰ | WFC - Wells Fargo & Co. | Sell 100.00% | 151,741 | 3.10 |
| Q4 2020 | ||||
| ☰ | STLA - Stellantis N.V. | Sell 100.00% | 760,000 | 6.15 |
| Q2 2020 | ||||
| ☰ | STLA - Stellantis N.V. | Reduce 57.78% | 1,040,000 | 5.14 |
| ☰ | RACE - Ferrari N.V. | Reduce 60.00% | 120,000 | 12.78 |
| Q1 2020 | ||||
| ☰ | AXP - American Express Co. | Reduce 5.59% | 12,430 | 0.71 |
| ☰ | STLA - Stellantis N.V. | Reduce 10.00% | 200,000 | 1.36 |
| ☰ | TOO - Teekay Offshore Partners L P | Sell 100.00% | 1,000,000 | 0.71 |
| Q1 2019 | ||||
| ☰ | GM.WS.B - General Mtrs Co | Sell 100.00% | 1,000,000 | 8.83 |
| ☰ | BAC.WS.A - Bank Amer Corp | Sell 100.00% | 320,000 | 2.31 |
| ☰ | TERP - Terraform Pwr Inc | Sell 100.00% | 231,183 | 1.46 |
| Q4 2018 | ||||
| ☰ | WFC.WS - Wells Fargo Co New | Sell 100.00% | 110,000 | 1.02 |
| Q3 2018 | ||||
| ☰ | AXP - American Express Co. | Reduce 18.35% | 50,000 | 2.31 |
| ☰ | C - Citigroup Inc. | Sell 100.00% | 106,000 | 3.34 |
| ☰ | PKX - Posco | Sell 100.00% | 1,281 | 0.04 |
| Q2 2018 | ||||
| ☰ | PKX - Posco | Reduce 93.60% | 18,719 | 0.71 |
| Q1 2018 | ||||
| ☰ | PKX - Posco | Reduce 55.56% | 25,000 | 0.93 |
| Q4 2017 | ||||
| ☰ | PKX - Posco | Reduce 35.71% | 25,000 | 0.88 |
| ☰ | 0E41 - Enlink Midstream LLC | Sell 100.00% | 719 | 0.01 |
| Q2 2017 | ||||
| ☰ | SRG - Seritage Growth Properties | Reduce 75.63% | 136,131 | 3.62 |
| Q1 2016 | ||||
| ☰ | ZINCQ - Horsehead Holding Corp | Sell 100.00% | 1,320,000 | 3.87 |
| Q2 2015 | ||||
| ☰ | CRESW - Cresud SA Comercial | Sell 100.00% | 271,944 | 0.01 |
| Q1 2015 | ||||
| ☰ | AXP - American Express Co. | Sell 100.00% | 272,430 | 16.79 |
| ☰ | BRK.B - Berkshire Hathaway CL B | Sell 100.00% | 140,600 | 13.98 |
| ☰ | BAC - Bank of America Corp. | Sell 100.00% | 590,000 | 6.99 |
| ☰ | BRK.A - Berkshire Hathaway CL A | Sell 100.00% | 30 | 4.49 |
| ☰ | GS - The Goldman Sachs Group, Inc. | Sell 100.00% | 30,502 | 3.92 |
| ☰ | DIG1 - Directv | Sell 100.00% | 50,000 | 2.87 |
| ☰ | BAC.WS.A - Bank Of America Corp | Sell 100.00% | 320,000 | 1.48 |