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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 14 rows. Rows without a quote are marked unavailable.

1BRK-BBERKSHIRE HATHAWAY INC DEL22.04%-140,600$68.3M$485.7752w: $403.82 - $542.07; reported $485.77
2AXPAMERICAN EXPRESS CO21.62%-210,000$66.99M$318.9852w: $220.43 - $326.27; reported $318.98
3MAMASTERCARD INCORPORATED11.92%-65,750$36.95M$561.9552w: $428.86 - $594.71; reported $561.95
4BACBANK AMERICA CORP11.73%-767,845$36.33M$47.3252w: $33.07 - $48.08; reported $47.32
5RACEFERRARI N V8.06%-60,000$24.97M$416.1052w: $391.54 - $509.13; reported $416.10
6MUMICRON TECHNOLOGY INC7.96%-200,000$24.65M$123.2552w: $61.54 - $137.13; reported $123.25
7BRK-ABERKSHIRE HATHAWAY INC DEL7.06%-30$21.86M$728800.0052w: $607955.00 - $812855.00; reported $728800.00
8MCOMOODYS CORP4.37%-27,000$13.54M$501.5952w: $378.71 - $531.93; reported $501.59
9BABAALIBABA GROUP HLDG LTD1.74%-47,500$5.39M$113.4152w: $71.97 - $148.43; reported $113.41
10DJCODAILY JOURNAL CORP1.57%-11,500$4.86M$422.2652w: $359.34 - $602.00; reported $422.26
11GOOGLALPHABET INC0.91%-16,000$2.82M$176.2552w: $140.53 - $207.05; reported $176.25
12SRGSERITAGE GROWTH PPTYS0.50%-500,000$1.54MNo quoteNo quote
13AMRALPHA METALLURGICAL RESOUR I0.29%-8,000$900K$112.5052w: $97.41 - $334.72; reported $112.50
14CNRCORE NATURAL RESOURCES INC0.24%-8,100$749K$92.4752w: $58.19 - $134.59; reported $92.47