Shares of UnitedHealth Group Inc. climbed more than 5 per cent on Tuesday on strong second quarter earnings. At 11:49 a.m. EDT, UnitedHealth shares were at $541.35, higher $25.98 or 5.04 per cent. On Tuesday,UnitedHealth had closed at $515.37. The Minnetonka, Minnesota-based company said its adjusted earnings were $6.80 per […]