Core Insights - Warren Buffett's final quarter as CEO of Berkshire Hathaway saw significant net selling activity, with a notable $352 million purchase of The New York Times Co. [2][12] Selling Activity - Berkshire Hathaway was a net seller of stocks for 13 consecutive quarters leading up to Buffett's retirement, with significant reductions in stakes in Amazon, Apple, and Bank of America [4] - The reduction in Amazon shares was by 77%, while Apple and Bank of America stakes were cut by 75% and 50%, respectively [4][9] Valuation Considerations - The selling activity appears to be driven by valuation concerns, as the current market valuations of Apple and Bank of America have significantly increased since Buffett's initial investments [5][9] - Apple shares now have a trailing P/E ratio of 33, compared to the low-to-mid teens when initially purchased [8] - Bank of America shares are now valued at a 37% premium to book value, contrasting with a 62% discount at the time of Berkshire's investment [9] New Investment - The standout purchase in Buffett's final quarter was 5,065,744 shares of The New York Times Co., valued at approximately $352 million [12] - The New York Times has seen growth in digital subscriptions, reaching 12.78 million, and has strong pricing power and double-digit growth in digital advertising [15] - Despite the positive outlook, the valuation of The New York Times stock is considered aggressive, with a forward P/E of 24 [16]