U.S. Stocks Retreat as Technology, Banking Shares Lead Declines

9 percent to $43.66, while Cigna Corp. added 1.9 percent to $48.95. UnitedHealth Group and WellPoint were named in the bank���s list of 18 ���best ideas.��� Nordstrom Inc. declined 2.6 percent to $47.88. The U.S. department-store chain forecast full-year...