RadioBuffett Raises Sirius XM Stake to 35.4%Digital and Radio FactsFebruary 6, 2025May 9, 2026 by Digital and Radio FactsFebruary 6, 2025May 9, 2026013 Warren Buffett increased his Sirius XM stake to 35.4% with a $43 million purchase, boosting the stock 12% as he bets on the satellite radio...