Skip to main content

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.

Get email alerts when Guy Spier files a new 13F — sign in or create a free account.

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 DEL22.16%-140,600$63.73M$453.2852w: $355.94 - $491.67; reported $453.28
2AXPAMERICAN EXPRESS CO21.67%-210,000$62.33M$296.7952w: $177.81 - $307.82; reported $296.79
3MAMASTERCARD INCORPORATED12.04%-65,750$34.62M$526.5752w: $416.53 - $537.70; reported $526.57
4BACBANK AMERICA CORP11.73%-767,845$33.75M$43.9552w: $31.27 - $48.08; reported $43.95
5RACEFERRARI N V8.60%-60,000$24.74M$412.4052w: $330.15 - $498.23; reported $412.40
6BRK-ABERKSHIRE HATHAWAY INC DEL7.10%-30$20.43M$680933.3352w: $539496.00 - $741971.00; reported $680933.33
7MUMICRON TECHNOLOGY INC5.85%-200,000$16.83M$84.1652w: $79.15 - $157.54; reported $84.16
8MCOMOODYS CORP4.44%-27,000$12.78M$473.3752w: $360.05 - $503.95; reported $473.37
9DJCODAILY JOURNAL CORP2.27%-11,500$6.53M$568.0052w: $309.22 - $602.00; reported $568.00
10BABAALIBABA GROUP HLDG LTD1.40%-47,500$4.03M$84.8052w: $66.63 - $117.82; reported $84.80
11GOOGLALPHABET INC1.05%-16,000$3.03M$189.3152w: $130.67 - $201.42; reported $189.31
12SRGSERITAGE GROWTH PPTYS0.72%-500,000$2.06MNo quoteNo quote
13AMRALPHA METALLURGICAL RESOUR I0.56%-8,000$1.6M$200.1352w: $185.00 - $452.00; reported $200.13
14ARCHARCH RESOURCES INC0.40%-8,100$1.14MNo quoteNo quote