According to the latest regulatory document, one of Warren Buffett's main deputies, Ajit Jain, vice chairman of Berkshire Hathaway and insurance business director, sold more than half of his holdings of Berkshire Hathaway Class A stocks, cashing out approximately 0.139 billion US dollars (equivalent to 0.99 billion yuan), accounting for 55% of his shareholding. The document did not mention the specific reason for the sale, but market analysis believes that this reflects, to some extent, the overvaluation of Berkshire Hathaway's stocks. There are also speculations that Ajit Jain, who has been following Warren Buffett for nearly 40 years and has made significant contributions to the development of Berkshire Hathaway, may be preparing to leave the company. (Securities Times)