Guy Spier — Aquamarine Capital Management, LLC

Guy SpierAquamarine Capital Management, LLC

13F portfolio as reported for Q2 2026 · total reported value $144.1M · source: public SEC filings

Top 7 reported holdings
TickerCompanyShares Reported valuePortfolio weight
BRK/BBerkshire Hathaway Inc.97,600$48.8M33.9%
BRK/ABerkshire Hathaway Inc.30$22.5M15.6%
AXPAmerican Express Company65,000$22.0M15.3%
MAMastercard Incorporated40,000$20.5M14.3%
MCOMoody's Corporation27,000$12.2M8.5%
RACEFerrari N.V.30,000$11.1M7.7%
DJCODaily Journal Corporation11,500$6.9M4.8%

13F filings are quarterly, published up to 45 days after quarter end, and report only long U.S.-listed equity positions. They are not a complete or current picture of any portfolio.