However, UNH stock has mounted a strong rebound since early August, climbing to as high as $381, buoyed by Berkshire Hathaway (BRK.A) (BRK.B) taking a new stake in the company and better-than-expected 2026 Star Ratings. Since then, the stock has pulled back slightly and moved into a consolidation phase.Shares of the healthcare conglomerate have dropped 35.2% on a year-to-date (YTD) basis. UNH stock cratered earlier this year after the company first cut and then withdrew its full-year earnings guidance. Addi ...