Apple stock has been Berkshire's largest public holding for years, but Berkshire's moves to reduce its exposure raise some big questions. As the largest cloud company in the world, Amazon is one of the biggest beneficiaries of the shift to AI.

Warren Buffett recently donated $6 billion worth of his company's stock to five philanthropic foundations, his biggest annual donation in nearly 20 years, according to Forbes. Since 2006, when Buffett committed to gradually giving away all of his Berkshire Hathaway stock,

Famed investor Warren Buffett is donating $6 billion worth of his company's stock to five foundations, bringing the total he has given to them since 2006 to roughly $60 billion, based on their value when received.