Warren Buffett reassures Berkshire Hathaway shareholders about its $321.4 billion cash reserves. Buffett emphasizes future strategic investments in equities and significant stakes in Japan's trading giants. Berkshire Hathaway's total market value exceeded $1 trillion in 2024 due to long-term reinvestment and compounding returns. Operating earnings rose significantly in 2023. Buffett highlights reinvestment over dividends.