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Guy Spier's Portfolio
Aquamarine Capital 13F holdings
What is Guy Spier's portfolio?
Aquamarine Capital has disclosed a total of 7 security holdings in their (2025 Q4) SEC 13F filing(s) with portfolio value of $147,543,000.
What stocks does Guy Spier own?
In Guy Spier's portfolio as of 31 Dec 2025, the top 5 holdings are (BRK.B) BERKSHIRE HATHAWAY INC CL-B (33.25%), (AXP) AMERICAN EXPRESS CO (16.30%), (MA) MASTERCARD INC - A (15.48%), (BRK.A) BERKSHIRE HATHAWAY INC CL-A (15.35%) and (MCO) MOODY'S CORP (9.35%).
To see the historical data of Aquamarine Capital's portfolio holdings please click on the "2025 Q4" dropdown menu and select the date.
To see Aquamarine Capital's original 13F reports (2025 Q4), please click on the "important" button.
Completely sold out
Shares, change to shares, sold shares - split-adjusted.
Reported price - this doesn't represent the actual buy or sell price.
It is the split-adjusted price of the security as of the last day of the reported period.