Shares of the major healthcare plan provider UnitedHealth Group Incorporated (UNH) have slipped 8% in the year-to-date period, underperforming the industry’s decline of 5.7% due to multiple uncertainties arising from the business environment, cyberattacks, regulatory probes and other factors. In contrast, the S&P 500 index has experienced a robust gain of 14.6% over the same period, highlighting the stark divergence in performance. The stock is down 12.7% at this point from its 52-week high of $554.70.Image ...