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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 DEL22.86%-140,600$47.95M$341.0052w: $259.85 - $342.50; reported $341.00
2AXPAMERICAN EXPRESS CO17.44%-210,000$36.58M$174.2052w: $130.65 - $182.15; reported $174.20
3RACEFERRARI N V12.46%-80,000$26.14M$326.7352w: $176.82 - $327.07; reported $326.73
4MAMASTERCARD INCORPORATED12.33%-65,750$25.86M$393.2952w: $276.87 - $395.17; reported $393.29
5BACBANK AMERICA CORP10.50%-767,845$22.03M$28.6952w: $26.32 - $38.60; reported $28.69
6BRK-ABERKSHIRE HATHAWAY INC DEL7.41%-30$15.53M$517800.0052w: $393012.00 - $522000.00; reported $517800.00
7MUMICRON TECHNOLOGY INC6.02%-200,000$12.62M$63.1152w: $48.43 - $74.77; reported $63.11
8MCOMOODYS CORP4.48%-27,000$9.39M$347.7052w: $230.16 - $351.06; reported $347.70
9SRGSERITAGE GROWTH PPTYS2.13%-500,000$4.46MNo quoteNo quote
10BABAALIBABA GROUP HLDG LTD1.89%-47,500$3.96M$83.3552w: $58.01 - $125.84; reported $83.35
11DJCODAILY JOURNAL CORP1.59%-11,500$3.33M$289.3052w: $236.01 - $315.23; reported $289.30
12GOOGLALPHABET INC0.91%-16,000$1.92M$119.6952w: $83.34 - $129.04; reported $119.69