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Guy Spier - Aquamarine Capital

As of Q2 2026, this manager reported 7 long-equity positions worth $144.09M in aggregate.

As of Q2 2026, Guy Spier's Aquamarine Capital held 7 long-equity positions with a reported value of $144.09M.

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Updated 2026-05-30 from SEC 13F data.

Live quotes available for 13 of 15 rows. Rows without a quote are marked unavailable.

1BRK-BBERKSHIRE HATHAWAY INC DEL25.50%-140,600$74.88M$532.5852w: $395.66 - $537.63; reported $532.58
2AXPAMERICAN EXPRESS CO19.24%-210,000$56.5M$269.0552w: $214.51 - $326.27; reported $269.05
3MAMASTERCARD INCORPORATED12.27%-65,750$36.04M$548.1252w: $428.86 - $582.23; reported $548.12
4BACBANK AMERICA CORP10.91%-767,845$32.04M$41.7352w: $34.15 - $48.08; reported $41.73
5BRK-ABERKSHIRE HATHAWAY INC DEL8.16%-30$23.95M$798433.3352w: $596000.00 - $806024.00; reported $798433.33
6RACEFERRARI N V8.01%-60,000$23.53M$392.2052w: $399.27 - $509.13; reported $392.20
7MUMICRON TECHNOLOGY INC5.92%-200,000$17.38M$86.8952w: $83.54 - $157.54; reported $86.89
8MCOMOODYS CORP4.28%-27,000$12.57M$465.7052w: $360.05 - $531.93; reported $465.70
9BABAALIBABA GROUP HLDG LTD2.14%-47,500$6.28M$132.2352w: $68.36 - $148.43; reported $132.23
10DJCODAILY JOURNAL CORP1.56%-11,500$4.57M$397.7452w: $333.29 - $602.00; reported $397.74
11GOOGLALPHABET INC0.84%-16,000$2.47M$154.6352w: $147.22 - $207.05; reported $154.63
12SRGSERITAGE GROWTH PPTYS0.55%-500,000$1.62MNo quoteNo quote
13AMRALPHA METALLURGICAL RESOUR I0.34%-8,000$1M$125.2552w: $121.36 - $361.17; reported $125.25
14CNRCORE NATURAL RESOURCES INC0.28%New8,100$828K$102.2252w: $66.54 - $134.59; reported $102.22
15ARCHARCH RESOURCES INC-Sold0$0No quoteNo quote