Shares of UnitedHealth Group Incorporated UNH are getting crushed Tuesday. The Minnetonka, Minnesota-based company announced that CEO Andrew Witty would step down for personal reasons. Stephen Hemsley will be the new chief executive. UnitedHealth also suspended its guidance for 2025.The shares have dropped 35% in just one month. But the move lower may soon end. This is why it is our Stock of the Day.Investor and trader psychology makes some prices more important than others in the financial markets. A big p ...