Billionaires Warren Buffett and David Tepper and "Big Short" Investor Michael Burry Just Bought UnitedHealth Group Stock. Should You? Buffett, Tepper, and Burry bought shares of UnitedHealth Group in Q2. The stock is popular with these wealthy investors because of its attractive valuation.

Berkshire Hathaway, Buffett’s investment group, disclosed it had bought 5 million shares of the healthcare company earlier in the year. That sparked a 14% Friday rally in a stock that has lost more than half of its value over the past 12 months.

UnitedHealth has been the Dow’s worst performer of 2025, but jumped 13% Friday. Here’s why Buffett and other leading hedge funds suddenly love the stock.