Warren Buffett and Berkshire Hathaway have made significant changes to their investment strategy over the past four years. At the end of 2020, equities comprised 53% of Berkshire Hathaway's $BRKB market cap, more than double their cash holdings. However, as of 2024, equities represent only 32% of the market cap, and equities and cash holdings are now equal. Additionally, Buffett has ceased his stock repurchasing activities.