We study the 13F filings regulated by SEC to document the portfolio of superinvestors. This is not a buy, sell or hold recommendation of any form, our goal is to educate you about how these grandmasters of investing are operating in real time and what kind of bets are they placing.

Aquamarine Capital, led by Guy Spier has a portfolio size of roughly $262 million. The portfolio updates present here are based on the latest filings which were on April 18, 2024. The portfolio is of date March 31, 2024. The major holdings and position sizing are tabulated below-

Portfolio Holdings as of 03/31/2024

Portfolio StockTicker SymbolPercentage of Portfolio
Berkshire Hathaway Class BBRK.B22.57%
American ExpressAXP18.25%
Mastercard Inc.MA12.09%
Bank of America Corp.BAC11.12%
Ferrari NVRACE9.99%
Micron Technology Inc.MU9.00%
Berkshire Hathaway Class ABRK.A7.27%
Moody’s Corp.MCO4.05%
Seritage Growth PropertiesSRG1.84%
Daily Journal Corp.DJCO1.59%
Alibaba Group HoldingsBABA1.31%
Alphabet Inc.GOOGL0.92%

The table above represents the portfolio based on latest filings. Portfolio changes done in the last quarter are listed below:

  • Reduced the position of Ferrari NV by 25%.

Actionable Insights

The knowledge or data which is not applied has no use! Here are some of the actionable recommendations based on the information shared in this blog:

  • Try and study the 10-Ks, annual reports and earnings calls of the holdings.
  • Explore the 13-Fs of other superinvestors and see if they are placing similar bets.
  • What are the benefits of Berkshire Hathaway Class A vs Berkshire Hathaway Class B? Why has Guy Spier positioned his portfolio accordingly?

Disclaimer: This portfolio of Guy Spier is shared for educational purposes so as to help value investors learn how superinvestors are operating. This is not a buy or sell recommendation of any form whatsoever. Reader discretion is advised.

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Welcome to the Value Investor’s Tribe. We are fan of Warren Buffett and Charlie Munger. We share their teachings, try to analyze businesses with their mental models and share superinvestor’s portfolio with you with periodic content. Feel free to explore the site.