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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 2026-05-10 from SEC 13F data.

Live quotes available for 11 of 12 rows. Rows without a quote are marked unavailable.

1BRK-BBERKSHIRE HATHAWAY INC DEL24.28%-140,600$49.25M$350.3052w: $259.85 - $373.34; reported $350.30
2AXPAMERICAN EXPRESS CO15.45%-210,000$31.33M$149.1952w: $130.65 - $182.15; reported $149.19
3MAMASTERCARD INCORPORATED12.83%-65,750$26.03M$395.9152w: $276.87 - $418.60; reported $395.91
4RACEFERRARI N V11.66%-80,000$23.66M$295.7352w: $176.82 - $329.88; reported $295.73
5BACBANK AMERICA CORP10.36%-767,845$21.02M$27.3852w: $26.32 - $38.60; reported $27.38
6BRK-ABERKSHIRE HATHAWAY INC DEL7.86%-30$15.94M$531466.6752w: $393012.00 - $566570.00; reported $531466.67
7MUMICRON TECHNOLOGY INC6.71%-200,000$13.61M$68.0352w: $48.43 - $74.77; reported $68.03
8MCOMOODYS CORP4.21%-27,000$8.54M$316.1952w: $230.16 - $363.19; reported $316.19
9BABAALIBABA GROUP HLDG LTD2.03%-47,500$4.12M$86.7452w: $58.01 - $121.30; reported $86.74
10SRGSERITAGE GROWTH PPTYS1.91%-500,000$3.87MNo quoteNo quote
11DJCODAILY JOURNAL CORP1.67%-11,500$3.38M$294.0052w: $245.54 - $315.50; reported $294.00
12GOOGLALPHABET INC1.03%-16,000$2.09M$130.8852w: $83.34 - $139.16; reported $130.88