Key Points American Express is a major Berkshire holding, although the stock has recently underperformed. Chubb's strong underwriting and book value gains keep it well-positioned to continue climbing. Moody's has a significant economic moat and strong growth track record. 10 stocks we like better than American Express › Warren Buffett retired as chief executive officer of Berkshire Hathaway (NYSE: BRKA) (NYSE: BRKB) at the end of 2025, but he still remains chairman of the holding company. Moreover, since taking over as CEO at the start of 2026, Greg Abel has largely kept Berkshire's investing strategy the same as his predecessor.
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