§ 13F · FUND PROFILE
Aquamarine Zurich AG.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $619.7B (13F)Positions · 28Turnover · — · Q4Filed · Jan 15, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$147.5B deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED JAN 15, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | BRK/B | BERKSHIRE HATHAWAY INC DEL | 98K | $49.1B | 33.3% | NEW |
| 2 | AXP | AMERICAN EXPRESS CO | 65K | $24.0B | 16.3% | NEW |
| 3 | MA | MASTERCARD INCORPORATED | 40K | $22.8B | 15.5% | NEW |
| 4 | BRK/A | BERKSHIRE HATHAWAY INC DEL | 30 | $22.6B | 15.3% | NEW |
| 5 | MCO | MOODYS CORP | 27K | $13.8B | 9.3% | NEW |
| 6 | RACE | FERRARI N V | 30K | $9.6B | 6.5% | NEW |
| 7 | DJCO | DAILY JOURNAL CORP | 12K | $5.6B | 3.8% | NEW |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE AQUAMARINE SIGNAL
AC read
Aquamarine Zurich AG is a Other fund managing $619.7 trillion in assets. The fund runs a focused portfolio of just 28 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
1 FILINGS
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed
Q1 2025
Steady book
+0 buys · −0 exits · 0 changed