Aquamarine Zurich AG Long-Term Concentrated

Location: Zurich, Switzerland

CIK: 0001953324 · Show all filings

Period: Q3 2025 (← Previous) (Next →)

Filing Date: Oct 20, 2025

Total Value: $317M

Holdings (14)

BRK/B BERKSHIRE HATHAWAY INC DEL 22.3%

Value $70.69M Shares 140,600 Est. Cost $284.56 Unrealized +70.2%

AXP AMERICAN EXPRESS CO 22.0%

Value $69.75M Shares 210,000 Est. Cost $144.95 Unrealized +118.4%

BAC BANK AMERICA CORP 12.5%

Value $39.61M Shares 767,845 Est. Cost $30.59 Unrealized +58.1%

MA MASTERCARD INCORPORATED 11.8%

Value $37.4M Shares 65,750 Est. Cost $325.17 Unrealized +76.4%

RACE FERRARI N V 9.1%

Value $28.98M Shares 60,000 Est. Cost $199.38 Unrealized +140.3%

BRK/A BERKSHIRE HATHAWAY INC DEL 7.1%

Value $22.63M Shares 30 Est. Cost $428128.38 Unrealized +69.8%

MU MICRON TECHNOLOGY INC 4.2%

Value $13.39M Shares 80,000 Est. Cost $56.91 Unrealized +124.6%

MCO MOODYS CORP 4.1%

Value $12.87M Shares 27,000 Est. Cost $282.31 Unrealized +78.0%

BABA ALIBABA GROUP HLDG LTD 2.7%

Value $8.49M Shares 47,500 Est. Cost $80.00 Unrealized —

DJCO DAILY JOURNAL CORP 1.7%

Value $5.349M Shares 11,500 Est. Cost $264.01 Unrealized +64.1%

GOOGL ALPHABET INC 1.2%

Value $3.89M Shares 16,000 Est. Cost $95.11 Unrealized +120.0%

SRG SERITAGE GROWTH PPTYS 0.7%

Value $2.125M Shares 500,000 Est. Cost $11.44 Unrealized -69.4%

AMR ALPHA METALLURGICAL RESOUR I 0.4%

Value $1.313M Shares 8,000 Est. Cost $309.65 Unrealized -55.2%

CNR CORE NATURAL RESOURCES INC 0.3%

Value $897K Shares 10,740 Est. Cost $84.05 Unrealized -11.1%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
BRK/B	BERKSHIRE HATHAWAY INC DEL	140,600	$70.69M	22.3%	$284.56	+70.2%	—	084670702
AXP	AMERICAN EXPRESS CO	210,000	$69.75M	22.0%	$144.95	+118.4%	—	025816109
BAC	BANK AMERICA CORP	767,845	$39.61M	12.5%	$30.59	+58.1%	—	060505104
MA	MASTERCARD INCORPORATED	65,750	$37.4M	11.8%	$325.17	+76.4%	—	57636Q104
RACE	FERRARI N V	60,000	$28.98M	9.1%	$199.38	+140.3%	—	N3167Y103
BRK/A	BERKSHIRE HATHAWAY INC DEL	30	$22.63M	7.1%	$428128.38	+69.8%	—	084670108
MU	MICRON TECHNOLOGY INC	80,000	$13.39M	4.2%	$56.91	+124.6%	—	595112103
MCO	MOODYS CORP	27,000	$12.87M	4.1%	$282.31	+78.0%	—	615369105
BABA	ALIBABA GROUP HLDG LTD	47,500	$8.49M	2.7%	$80.00	—	—	01609W102
DJCO	DAILY JOURNAL CORP	11,500	$5.349M	1.7%	$264.01	+64.1%	—	233912104
GOOGL	ALPHABET INC	16,000	$3.89M	1.2%	$95.11	+120.0%	—	02079K305
SRG	SERITAGE GROWTH PPTYS	500,000	$2.125M	0.7%	$11.44	-69.4%	—	81752R100
AMR	ALPHA METALLURGICAL RESOUR I	8,000	$1.313M	0.4%	$309.65	-55.2%	—	020764106
CNR	CORE NATURAL RESOURCES INC	10,740	$897K	0.3%	$84.05	-11.1%	—	218937100