Warren Buffett stepped down as CEO of Berkshire Hathaway on December 31, 2025, after six decades leading the conglomerate he transformed from a struggling textile mill into a $1 trillion empire.
The “Oracle of Omaha” left his successor, Greg Abel, with a very concentrated portfolio: more than 65% of Berkshire’s $381 billion portfolio is invested in just six stocks
Abel, who has served as vice chair overseeing non-insurance operations, officially took over as CEO on January 1, 2026. At 95 years old, Buffett isn’t fully retiring—he will remain board chair and plans to continue coming to the Omaha headquarters as much as before. However, he has stated he will be “going quiet” and leaving all decision-making to Abel.
While he is now in charge of Berkshire Hathaway, he added to one of Buffett’s top picks in the first quarter in a big way. Quick Read: – Berkshire Hathaway is underperforming the S&P 500 this year by a sizable margin. – The biggest winners in the portfolio are companies that Warren Buffett bought when he was still the CEO. – The surprise may be that the biggest winner is a technology stock that Buffett bought last year. – The analyst who called NVIDIA in 2010 just named his top 10 stocks and Chevron wasn’t one of them. Get them here FREE.