Berkshire used to own more than 900 million shares of Apple stock, but it now holds 280 million. Uneven business results and underwhelming momentum in AI could partially explain why Buffett's company has cut its position in Apple.

A Surprising Shopping Spree As his illustrious investing career winds down, Warren Buffett remains one of the most closely watched investors. No other investor attracts the kind of following and loyalty as the Oracle of Omaha.