Warren Buffett has officially stepped down as CEO of Berkshire Hathaway, passing leadership to Greg Abel. Buffett expressed strong confidence in Abel, stating he would rather have Abel manage his money than any top US advisor or CEO, and believes Berkshire has the best chance of lasting 100 years under his successor. Despite Buffett's endorsement, some investors express concerns about Abel overseeing the conglomerate's diverse businesses and equity portfolio, as Berkshire's shares saw a slight dip following the transition.