UnitedHealth Group Incorporated (UNH) missed first-quarter earnings expectations, withdrew full-year guidance, and faces legal challenges. However, Insider confidence has lately improved share performance. So, shall we consider investing in the UnitedHealth stock, given recent positive developments? Let’s see –  Why Did UnitedHealth Stock Jump Yesterday? On Monday, UnitedHealth Group’s shares rose 8.2% to close at $315.89, following a 23% decline last week. In yesterday’s trading session, UnitedHealth stock ...