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 stoc

So while we should always try to assess where a stock or sector is headed, the better way to trade is with a simple framework: Any stock can go up and thus be a source of profits. However, owning each stock comes with different levels of risk,