UnitedHealth Group (UNH) closed the latest trading day at $594.10, indicating a -0.47% change from the previous session's end. The stock trailed the S&P 500, which registered a daily gain of 1.16%. Meanwhile, the Dow gained 1.2%, and the Nasdaq, a tech-heavy index, added 1.16%.Shares of the largest U.S. health insurer have appreciated by 6.82% over the course of the past month, outperforming the Medical sector's gain of 4.5% and the S&P 500's gain of 3.48%.Analysts and investors alike will be keeping a clos ...