Aquamarine Zurich (Guy Spier) reported 7 equity positions with a combined reported value of $144.1M in its Q2 2026 Form 13F filing. The ten largest of those positions account for 100.0%of the filing’s reported value.
Most recent period on file: 30 Jun 2026 (Q2 2026) · 9 quarters on file · 13F is due 45 days after quarter end
Reported value
$144.1M
13F positions, Q2 2026
Positions
7
Distinct holdings in the filing
Top 10 share
100.0%
Highly concentrated
Quarters on file
9
Through Q2 2026
Ten largest reported positions
Top 7 of 7 positions by reported value · Q2 2026
Ten largest reported positions held by Aquamarine Zurich (Guy Spier) as of 30 Jun 2026
#
Security
CUSIP
Class
Reported value
Shares
Weight
1
BERKSHIRE HATHAWAY INC DEL
084670702
CL B NEW
$48.8M
98K
33.89%
2
BERKSHIRE HATHAWAY INC DEL
084670108
CL A
$22.5M
30
15.59%
3
AMERICAN EXPRESS CO
025816109
COM
$22.0M
65K
15.26%
4
MASTERCARD INCORPORATED
57636Q104
CL A
$20.5M
40K
14.26%
5
MOODYS CORP
615369105
COM
$12.2M
27K
8.49%
6
FERRARI N V
N3167Y103
COM
$11.1M
30K
7.71%
7
DAILY JOURNAL CORP
233912104
COM
$6.9M
12K
4.80%
The full 7-position filing, quarter-over-quarter position changes, concentration analysis and cross-fund security search are in the Fund Tracker dashboard.