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Data sourced from SEC EDGAR 13F filings

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Guy Spier – Aquamarine Capital

Period:
Q2 2026
Portfolio date:
Jun 30, 2026
No. of stocks:
7
Portfolio value:
$144,091,000
Filed:
Jul 10, 2026
Style:
Value Investing
HistStockActivityShare change% change to portfolio
Q4 2025filed Jan 15, 264 reduced7 exited
≡BAC – BANK AMERICA CORPSell−767,845−12.48
≡BRK.B – BERKSHIRE HATHAWAY INC DELReduce 30.58%−43,00010.98
≡AXP – AMERICAN EXPRESS COReduce 69.05%−145,000−5.68
≡MU – MICRON TECHNOLOGY INCSell−80,000−4.22
≡MA – MASTERCARD INCORPORATEDReduce 39.16%−25,7503.69
≡BABA – ALIBABA GROUP HLDG LTDSell−47,500−2.68
≡RACE – FERRARI N VReduce 50.00%−30,000−2.65
≡GOOGL – ALPHABET INCSell−16,000−1.23
≡SRG – SERITAGE GROWTH PPTYSSell−500,000−0.67
≡AMR – ALPHA METALLURGICAL RESOUR ISell−8,000−0.41
≡CNR – CORE NATURAL RESOURCES INCSell−10,740−0.28
Q3 2025filed Oct 20, 251 reduced
≡MU – MICRON TECHNOLOGY INCReduce 60.00%−120,000−3.74
Q1 2025filed Jul 18, 251 new1 exited
≡ARCH RESOURCES INCSell−8,100−0.40
Q1 2024filed Apr 18, 241 reduced
≡RACE – FERRARI N VReduce 25.00%−20,000−1.80