Aquamarine Zurich AG

ZURICH, V8 · CIK 0001953324

Portfolio Value: $317.37M

Positions: 14

Period: 2025-09-30

Filed: 2025-10-20

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

New positions

Added to

Trimmed

Exited

Aquamarine Zurich AG Q3 2025 13F Filing Summary

Aquamarine Zurich AG (ZURICH, V8) reported a portfolio value of $317.37M across 14 positions in their Q3 2025 SEC 13F filing (period ending 2025-09-30). The top 10 positions account for 97.4% of the portfolio.

Top holdings: BRK/B$70.69M·AXP$69.75M·BAC$39.61M·MA$37.40M·RACE$28.98M

Holdings Heatmap

BRK/B22.3% · $70.69M AXP22.0% · $69.75M BAC12.5%MA11.8%RACE9.1%BRK/A7.1%

MU4.2% · $13.39M-60.0%MCO4.1% · $12.87M BABA2.7% · $8.49M DJCO1.7%GOOGL1.2%SRG0.7%

AMR0.4% · $1.31M CNR0.3% · $897.00K+32.6%

Top 14 holdings by portfolio weight. Block width = holding percentage. Green = new/increased, red = reduced, gray = unchanged.

Largest Trades This Quarter

Largest Adds1

CNR

CORE NATURAL RESOURCES INC

$897.00K

+32.6%

Largest Reductions1

MICRON TECHNOLOGY INC

$13.39M

-60.0%

All Holdings

#	Stock	Value↓	Shares	Weight	Change
1	BRK/BBERKSHIRE HATHAWAY INC DEL	$70.69M	140,600	22.27%	-
2	AXPAMERICAN EXPRESS CO	$69.75M	210,000	21.98%	-
3	BACBANK AMERICA CORP	$39.61M	767,845	12.48%	-
4	MAMASTERCARD INCORPORATED	$37.40M	65,750	11.78%	-
5	RACEFERRARI N V	$28.98M	60,000	9.13%	-
6	BRK/ABERKSHIRE HATHAWAY INC DEL	$22.63M	30	7.13%	-
7	MUMICRON TECHNOLOGY INC	$13.39M	80,000	4.22%	-60.0%
8	MCOMOODYS CORP	$12.87M	27,000	4.05%	-
9	BABAALIBABA GROUP HLDG LTD	$8.49M	47,500	2.68%	-
10	DJCODAILY JOURNAL CORP	$5.35M	11,500	1.69%	-

Position Changes

Stock	Value	Shares	Share Chg	% Chg
CNRCORE NATURAL RESOURCES INC	$897.00K	10,740	+2.6K	+32.6%

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