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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 2026-06-06 from SEC 13F data.

Live quotes available for 12 of 14 rows. Rows without a quote are marked unavailable.

1BRK-BBERKSHIRE HATHAWAY INC DEL22.66%-140,600$64.71M$460.2652w: $330.58 - $484.82; reported $460.26
2AXPAMERICAN EXPRESS CO19.94%-210,000$56.95M$271.2052w: $140.91 - $272.68; reported $271.20
3MAMASTERCARD INCORPORATED11.37%-65,750$32.47M$493.7952w: $359.77 - $501.80; reported $493.79
4BACBANK AMERICA CORP10.67%-767,845$30.47M$39.6852w: $24.96 - $44.44; reported $39.68
5RACEFERRARI N V9.82%-60,000$28.04M$467.3352w: $293.49 - $498.23; reported $467.33
6MUMICRON TECHNOLOGY INC7.26%-200,000$20.74M$103.7152w: $63.88 - $157.54; reported $103.71
7BRK-ABERKSHIRE HATHAWAY INC DEL7.26%-30$20.74M$691166.6752w: $502000.00 - $741971.00; reported $691166.67
8MCOMOODYS CORP4.49%-27,000$12.81M$474.5952w: $298.86 - $495.10; reported $474.59
9DJCODAILY JOURNAL CORP1.97%-11,500$5.64M$490.0952w: $286.05 - $512.49; reported $490.09
10BABAALIBABA GROUP HLDG LTD1.77%-47,500$5.04M$106.1352w: $66.63 - $112.22; reported $106.13
11GOOGLALPHABET INC0.93%-16,000$2.65M$165.8852w: $120.21 - $191.75; reported $165.88
12SRGSERITAGE GROWTH PPTYS0.81%-500,000$2.33MNo quoteNo quote
13AMRALPHA METALLURGICAL RESOUR I0.66%-8,000$1.89M$236.1352w: $185.00 - $452.00; reported $236.13
14ARCHARCH RESOURCES INC0.39%-8,100$1.12MNo quoteNo quote