Aquamarine Zurich AG

CIK 0001953324

Annualised vol

8.202055%

Beta

0.317085

HHI

1982.536117

Top-10 weight

100.0%

VaR 95%

0.724537%

VaR 99%

1.444307%

Max drawdown

15.438951%

Matched value

42.027608%

Returns of reported holdings

Loading returns…

What the latest 13F shows bought and sold against the quarter before, by share count.

Ticker	Change	Shares now	Shares before	Share change %	Value now ($)
AXP	UNCHANGED	65,000	65,000	0.0%	21,986
MA	UNCHANGED	40,000	40,000	0.0%	20,544
RACE	UNCHANGED	30,000	30,000	0.0%	11,114
DJCO	UNCHANGED	11,500	11,500	0.0%	6,914

Ticker	Change	Issuer	Class	CUSIP	Value ($)	Weight %	Shares
-		BERKSHIRE HATHAWAY INC DEL	CL B NEW	084670702	48,838	33.89	97600.0
-		BERKSHIRE HATHAWAY INC DEL	CL A	084670108	22,466	15.59	30.0
AXP	UNCHANGED	AMERICAN EXPRESS CO	COM	025816109	21,986	15.26	65000.0
MA	UNCHANGED	MASTERCARD INCORPORATED	CL A	57636Q104	20,544	14.26	40000.0
-		MOODYS CORP	COM	615369105	12,229	8.49	27000.0
RACE	UNCHANGED	FERRARI N V	COM	N3167Y103	11,114	7.71	30000.0
DJCO	UNCHANGED	DAILY JOURNAL CORP	COM	233912104	6,914	4.8	11500.0

Period	Filed	Value ($)	Positions	Vol %	Beta	Max DD %
2026-06-30	2026-07-10	144,091	7	8.202055	0.317085	15.438951
2026-03-31	2026-04-17	135,303	7	8.093042	0.314347	15.26167
2025-12-31	2026-01-15	147,543	7	8.737134	0.338788	16.534129
2025-09-30	2025-10-20	317,370	14	11.002239	0.438064	19.845757
2025-03-31	2025-04-11	293,674	14	10.726084	0.433637	19.058263
2024-12-31	2025-01-24	287,605	14	11.421887	0.458536	20.294743