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Super Investors Aquamarine Zurich AG
AZ

Aquamarine Zurich AG

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$144M
Positions
7
Quarter ended
June 30, 2026
Filed
July 10, 2026

Reported portfolio value by quarter (16 quarters reported)

$317M $135M
Q3 22 Q3 23 Q3 24 Q3 25 Q2 26

$164M in Q3 2022 → $144M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
BH Berkshire Hathaway Inc Del 33.9% Unchanged 97,600 $48.8M
BH Berkshire Hathaway Inc Del 15.6% Unchanged 30 $22.5M
American Express Co 15.3% Unchanged 65,000 $22M
Mastercard Incorporated 14.3% Unchanged 40,000 $20.5M
M Moodys Corp 8.5% Unchanged 27,000 $12.2M
FN Ferrari N V 7.7% Unchanged 30,000 $11.1M
Daily Journal Corp 4.8% Unchanged 11,500 $6.91M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed July 10, 2026

No position changes this quarter.

Q1 2026

quarter ended March 31, 2026 · filed April 17, 2026

No position changes this quarter.

Q4 2025

quarter ended December 31, 2025 · filed January 15, 2026

Company Action Shares changed Value of change % of portfolio
American Express Co Trimmed −145,000 −$53.6M 16.3%
BA Bank America Corp Exited −767,845 −$39.6M —
BH Berkshire Hathaway Inc Del Trimmed −43,000 −$21.6M 33.3%
Mastercard Incorporated Trimmed −25,750 −$14.7M 15.5%
Micron Technology Inc Exited −80,000 −$13.4M —
FN Ferrari N V Trimmed −30,000 −$9.56M 6.5%
AG Alibaba Group Hldg Ltd Exited −47,500 −$8.49M —
Alphabet Inc Exited −16,000 −$3.89M —
SG Seritage Growth Pptys Exited −500,000 −$2.13M —
AM Alpha Metallurgical Resour I Exited −8,000 −$1.31M —

Showing the 10 largest of 11 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 20, 2025

Company Action Shares changed Value of change % of portfolio
Micron Technology Inc Trimmed −120,000 −$20.1M 4.2%

Q2 2025

quarter ended June 30, 2025 · filed July 18, 2025

No position changes this quarter.

Q1 2025

quarter ended March 31, 2025 · filed July 18, 2025

Company Action Shares changed Value of change % of portfolio
Arch Resources Inc Exited −8,100 −$1.14M —
Core Natural Resources Inc New +10,740 +$828K 0.3%

Q4 2024

quarter ended December 31, 2024 · filed January 24, 2025

No position changes this quarter.

Q3 2024

quarter ended September 30, 2024 · filed October 16, 2024

No position changes this quarter.

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