Berkshire Hathaway's Q4 2024 portfolio shifts include a new stake in Constellation Brands, notable disposals, and increased stakes in key companies. See more.

Warren Buffett’s Berkshire Hathaway has spent another $54 million to purchase Sirius XM stock, giving it a stake of more than 35% in the satellite-radio company.

It's no big secret that Warren Buffett has been a net seller of stocks recently. Thanks to several massive stock sales, and a few smaller ones, Berkshire Hathaway 's ( BRK.A 0.50%) ( BRK.B 0.52%) cash stockpile has ballooned to $325 billion as of the most recent quarter, far more than the conglomerate has ever had on hand before.