On May 15th, after the US stock market closed, Berkshire Hathaway filed its 13F holdings report with the SEC, revealing that as of the end of the first quarter of this year, its total market value of US stock holdings reached $332 billion. During the first quarter, Warren Buffett continued to reduce his stake in Apple, selling off 116 million shares;

He initiated a position in Chubb Insurance, with a market value exceeding $6.7 billion. Buffett also increased his holdings in Occidental Petroleum, but reduced his stake in Chevron and completely sold off his holdings in HP.