Aquamarine Zurich AG Long-Term Concentrated

Location: Zurich, Switzerland

CIK: 0001953324 · Show all filings

Period: Q4 2025 (← Previous) (Next →)

Filing Date: Jan 15, 2026

Total Value: $148M

Holdings (7)

BRK/B BERKSHIRE HATHAWAY INC DEL 33.3%

Value $49.06M Shares 97,600 Est. Cost $284.56 Unrealized +74.8%

AXP AMERICAN EXPRESS CO 16.3%

Value $24.05M Shares 65,000 Est. Cost $144.95 Unrealized +146.3%

MA MASTERCARD INCORPORATED 15.5%

Value $22.84M Shares 40,000 Est. Cost $325.17 Unrealized +71.9%

BRK/A BERKSHIRE HATHAWAY INC DEL 15.3%

Value $22.64M Shares 30 Est. Cost $428128.38 Unrealized +74.3%

MCO MOODYS CORP 9.3%

Value $13.79M Shares 27,000 Est. Cost $282.31 Unrealized +72.6%

RACE FERRARI N V 6.5%

Value $9.561M Shares 30,000 Est. Cost $199.38 Unrealized +100.7%

DJCO DAILY JOURNAL CORP 3.8%

Value $5.604M Shares 11,500 Est. Cost $264.01 Unrealized +68.3%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
BRK/B	BERKSHIRE HATHAWAY INC DEL	97,600	$49.06M	33.3%	$284.56	+74.8%	—	084670702
AXP	AMERICAN EXPRESS CO	65,000	$24.05M	16.3%	$144.95	+146.3%	—	025816109
MA	MASTERCARD INCORPORATED	40,000	$22.84M	15.5%	$325.17	+71.9%	—	57636Q104
BRK/A	BERKSHIRE HATHAWAY INC DEL	30	$22.64M	15.3%	$428128.38	+74.3%	—	084670108
MCO	MOODYS CORP	27,000	$13.79M	9.3%	$282.31	+72.6%	—	615369105
RACE	FERRARI N V	30,000	$9.561M	6.5%	$199.38	+100.7%	—	N3167Y103
DJCO	DAILY JOURNAL CORP	11,500	$5.604M	3.8%	$264.01	+68.3%	—	233912104