J.C. Penney is also offering voluntary early retirement to 6,000 employees. The company's store closures, payroll reductions and other moves should results in annual savings of $200 million. Stock : Shares sank 5.8% to close at 6.46 on the stock market today, after dropping 2.7% to 6.86 on Thursday. Kohl's ( KSS ) and Macy's ( M ) both reported sales and comparable sales declines in the key holiday quarter, and Macy's plans to shutter 34 more stores over the next few years. Wal-Mart ( WMT ) revenue grew but still missed forecasts. Late Thursday, Nordstrom ( JWN ) reported mixed Q4 results and gave weak full-year earnings guidance. While Amazon ( AMZN ) has been threatening to eat up more market share, sending brick-and-mortar foot traffic down further, retailers now face the prospect of a tax on imports.