Aquamarine Zurich AG Long-Term Concentrated

Location: Zurich, Switzerland

CIK: 0001953324 · Show all filings

Period: Q1 2026 (← Previous) (Next →)

Filing Date: Apr 17, 2026

Total Value: $135M

Holdings (7)

BRK/B BERKSHIRE HATHAWAY INC DEL 34.6%

Value $46.77M Shares 97,600 Est. Cost $284.56 Unrealized +73.4%

BRK/A BERKSHIRE HATHAWAY INC DEL 15.9%

Value $21.54M Shares 30 Est. Cost $428128.38 Unrealized +72.9%

MA MASTERCARD INCORPORATED 14.8%

Value $19.99M Shares 40,000 Est. Cost $325.17 Unrealized +65.8%

AXP AMERICAN EXPRESS CO 14.5%

Value $19.66M Shares 65,000 Est. Cost $144.95 Unrealized +145.7%

MCO MOODYS CORP 8.7%

Value $11.78M Shares 27,000 Est. Cost $282.31 Unrealized +73.4%

RACE FERRARI N V 7.4%

Value $10.02M Shares 30,000 Est. Cost $199.38 Unrealized +78.8%

DJCO DAILY JOURNAL CORP 4.1%

Value $5.547M Shares 11,500 Est. Cost $264.01 Unrealized +117.3%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
BRK/B	BERKSHIRE HATHAWAY INC DEL	97,600	$46.77M	34.6%	$284.56	+73.4%	—	084670702
BRK/A	BERKSHIRE HATHAWAY INC DEL	30	$21.54M	15.9%	$428128.38	+72.9%	—	084670108
MA	MASTERCARD INCORPORATED	40,000	$19.99M	14.8%	$325.17	+65.8%	—	57636Q104
AXP	AMERICAN EXPRESS CO	65,000	$19.66M	14.5%	$144.95	+145.7%	—	025816109
MCO	MOODYS CORP	27,000	$11.78M	8.7%	$282.31	+73.4%	—	615369105
RACE	FERRARI N V	30,000	$10.02M	7.4%	$199.38	+78.8%	—	N3167Y103
DJCO	DAILY JOURNAL CORP	11,500	$5.547M	4.1%	$264.01	+117.3%	—	233912104