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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 11 of 12 rows. Rows without a quote are marked unavailable.

1BRK-BBERKSHIRE HATHAWAY INC DEL21.92%-140,600$50.15M$356.6652w: $292.42 - $373.34; reported $356.66
2AXPAMERICAN EXPRESS CO17.20%-210,000$39.34M$187.3452w: $140.91 - $188.30; reported $187.34
3MAMASTERCARD INCORPORATED12.26%-65,750$28.04M$426.5152w: $340.21 - $428.36; reported $426.51
4RACEFERRARI N V11.78%-80,000$26.95M$336.9152w: $213.97 - $372.42; reported $336.91
5BACBANK AMERICA CORP11.30%-767,845$25.85M$33.6752w: $24.96 - $37.00; reported $33.67
6MUMICRON TECHNOLOGY INC7.46%-200,000$17.07M$85.3452w: $49.55 - $87.87; reported $85.34
7BRK-ABERKSHIRE HATHAWAY INC DEL7.12%-30$16.28M$542633.3352w: $442363.00 - $566570.00; reported $542633.33
8MCOMOODYS CORP4.61%-27,000$10.55M$390.5652w: $274.81 - $396.91; reported $390.56
9SRGSERITAGE GROWTH PPTYS2.04%-500,000$4.68MNo quoteNo quote
10DJCODAILY JOURNAL CORP1.71%-11,500$3.92M$340.7852w: $258.00 - $357.34; reported $340.78
11BABAALIBABA GROUP HLDG LTD1.61%-47,500$3.68M$77.5252w: $70.08 - $121.30; reported $77.52
12GOOGLALPHABET INC0.98%-16,000$2.24M$139.6952w: $84.86 - $142.68; reported $139.69