2026 Q3 Portfolio Activity
In 2026 Q3, Aquamarine Zurich AG maintained a portfolio of 7 distinct positions.
Position History
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Total Positions
7
Quarter
2026 Q3
Top Holding
BRK/B (33.7%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-7 of 7
Aquamarine Zurich AG Full Holdings List — 2026 Q3
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BRK/B
BERKSHIRE HATHA...
|
Financial Services | 33.66% | 33.89% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
97,600 | $48,560 |
$267.02
+118.5%
|
2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | ||
|
BRK/A
BERKSHIRE HATHA...
|
Financial Services | 15.53% | 15.59% |
#2
Prev: #2
|
6.5 |
—
|
no change | no change |
P
S
|
30 | $22,410 |
$406470.00
+115.4%
|
2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | ||
|
MA
MASTERCARD INCO...
|
Financial Services | 15.29% | 14.26% |
#3
1
Prev: #4
|
6.0 |
—
|
no change | no change |
P
S
|
40,000 | $22,059 |
$277.15
+137.7%
|
2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | ||
|
AXP
AMERICAN EXPRES...
|
Financial Services | 13.70% | 15.26% |
#4
1
Prev: #3
|
5.5 |
—
|
no change | no change |
P
S
|
65,000 | $19,767 | 2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | |||
|
MCO
MOODYS CORP
|
Financial Services | 8.50% | 8.49% |
#5
Prev: #5
|
4.9 |
—
|
no change | no change |
P
S
|
27,000 | $12,262 | 2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | |||
|
RACE
FERRARI N V
|
Consumer Cyclical | 8.16% | 7.71% |
#6
Prev: #6
|
4.3 |
—
|
no change | no change |
P
S
|
30,000 | $11,774 | 2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 | |||
|
DJCO
DAILY JOURNAL C...
|
Technology | 5.15% | 4.80% |
#7
Prev: #7
|
3.1 |
—
|
no change | no change |
P
S
|
11,500 | $7,432 | 2022 Q3 | 13F Filing | 2026-09-30 | 2026-11-10 |
Showing 1-7 of 7 holdings