UnitedHealth stock got a much-needed boost after Warren Buffett’s Berkshire Hathaway disclosed it had loaded up on the health conglomerate’s battered shares.

Berkshire Hathaway’s (BRK/A, BRK/B) second-quarter 13F was filed after the market closed on August 14.

But what was a bit of a surprise was that Buffett and his team added to six existing positions and also bought six brand-new stocks in the massive portfolio.