Guy Spier, Aquamarine Capital
Portfolio USD 144,091,000 across 7 positions as of 2026 Q2; history from 2014 Q4. Source: quarterly 13F filings via dataroma.com.
Positions, 2026 Q2
- BRK.B Berkshire Hathaway CL B: 34% of portfolio, USD 48,838,000, hold
- BRK.A Berkshire Hathaway CL A: 16% of portfolio, USD 22,466,000, hold
- AXP American Express: 15% of portfolio, USD 21,986,000, hold
- MA Mastercard Inc.: 14% of portfolio, USD 20,544,000, hold
- MCO Moody's Corp.: 8.5% of portfolio, USD 12,229,000, hold
- RACE Ferrari NV: 7.7% of portfolio, USD 11,114,000, hold
- DJCO Daily Journal Corp.: 4.8% of portfolio, USD 6,914,000, hold
Portfolio value, all published quarters
- 2014 Q4: USD 138,758,131
- 2015 Q1: USD 127,635,687
- 2015 Q2: USD 143,527,623
- 2015 Q3: USD 120,024,319
- 2015 Q4: USD 125,181,830
- 2016 Q1: USD 117,807,500
- 2016 Q2: USD 110,856,343
- 2016 Q3: USD 125,486,499
- 2016 Q4: USD 149,204,739
- 2017 Q1: USD 162,243,867
- 2017 Q2: USD 163,848,006
- 2017 Q3: USD 197,018,772
- 2017 Q4: USD 208,780,411
- 2018 Q1: USD 208,114,965
- 2018 Q2: USD 212,509,864
- 2018 Q3: USD 207,805,986
- 2018 Q4: USD 177,699,397
- 2019 Q1: USD 181,239,540
- 2019 Q2: USD 193,218,520
- 2019 Q3: USD 197,934,628
- 2019 Q4: USD 217,252,820
- 2020 Q1: USD 146,642,742
- 2020 Q2: USD 137,313,793
- 2020 Q3: USD 151,598,509
- 2020 Q4: USD 171,408,131
- 2021 Q1: USD 191,395,064
- 2021 Q2: USD 213,163,806
- 2021 Q3: USD 203,940,991
- 2021 Q4: USD 217,565,874
- 2022 Q1: USD 220,635,418
- 2022 Q2: USD 170,245,792
- 2022 Q3: USD 164,372,241
- 2022 Q4: USD 185,888,293
- 2023 Q1: USD 193,360,082
- 2023 Q2: USD 209,716,363
- 2023 Q3: USD 202,847,519
- 2023 Q4: USD 228,763,176
- 2024 Q1: USD 261,934,317
- 2024 Q2: USD 262,557,198
- 2024 Q3: USD 285,594,414
- 2024 Q4: USD 287,633,550
- 2025 Q1: USD 293,673,172
- 2025 Q2: USD 309,811,622
- 2025 Q3: USD 317,371,056
- 2025 Q4: USD 147,527,737
- 2026 Q1: USD 135,303,265
- 2026 Q2: USD 144,091,000