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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 DEL21.78%-140,600$57.2M$406.8052w: $330.58 - $430.00; reported $406.80
2AXPAMERICAN EXPRESS CO18.52%-210,000$48.63M$231.5552w: $140.91 - $244.41; reported $231.55
3BACBANK AMERICA CORP11.63%-767,845$30.54M$39.7752w: $24.96 - $40.34; reported $39.77
4MAMASTERCARD INCORPORATED11.05%-65,750$29.01M$441.1652w: $359.77 - $490.00; reported $441.16
5MUMICRON TECHNOLOGY INC10.02%-200,000$26.31M$131.5352w: $60.50 - $157.54; reported $131.53
6RACEFERRARI N V9.32%-60,000$24.47M$407.8552w: $285.02 - $442.80; reported $407.85
7BRK-ABERKSHIRE HATHAWAY INC DEL7.00%-30$18.37M$612233.3352w: $502000.00 - $741971.00; reported $612233.33
8MCOMOODYS CORP4.33%-27,000$11.37M$420.9352w: $298.86 - $428.79; reported $420.93
9DJCODAILY JOURNAL CORP1.73%-11,500$4.54M$394.5252w: $282.50 - $402.95; reported $394.52
10BABAALIBABA GROUP HLDG LTD1.30%-47,500$3.42M$72.0052w: $66.63 - $102.50; reported $72.00
11GOOGLALPHABET INC1.11%-16,000$2.91M$182.1352w: $115.35 - $186.05; reported $182.13
12SRGSERITAGE GROWTH PPTYS0.89%-500,000$2.34MNo quoteNo quote
13AMRALPHA METALLURGICAL RESOUR I0.85%New8,000$2.24M$280.5052w: $151.24 - $452.00; reported $280.50
14ARCHARCH RESOURCES INC0.47%New8,100$1.23MNo quoteNo quote