J.C. Penney’s shares plunge after 4Q massive loss

NEW YORK — J.C. Penney is the biggest loser. Shares of J.C. Penney Co. plunged nearly 16 percent on Thursday, the biggest loser on the Standard &Poor’s 500 index for most of the day. The drop comes a day after the department-store chain reported its fourth consecutive larger-than-expected quarterly loss on another steep sales decline [...]