
Warren Buffett has never been one to mince his words. And perhaps that’s why folks from Wall Street and Main Street have followed the “Oracle of Omaha” and his business decisions for decades. When Buffett’s holding company makes an equity investment, people pay close attention, and many retail investors choose to make those same buys.
Buffett’s purchase of UnitedHealth Group (UNH) in the second quarter of 2025, when his Berkshire Hathaway (BRK.B) purchased 5,039,564 shares of UNH stock, was particularly noteworthy. The health insurer has been struggling since the assassination of UnitedHealth CEO Brian Thompson, and has now run into trouble with regulators. UNH is one of the worst-performing stocks in the S&P 500 Index ($SPX) this year, down 32.45% in 2025.