J.C. Penney Co. Inc. shares sank 10.2% in Friday premarket trading after the retailer reported a fourth-quarter sales miss. Net income was $254.0 million, or 81 cents per share, up from $192.0 million, or 61 cents per share, year-over-year. Adjusted EPS was 57 cents. Revenue totaled $4.03 billion, up from $3.96 billion last year. Same-store sales increased 2.6% for the period. The FactSet consensus was for EPS of 47 cents, revenue of $4.05 billion, and same-store sales growth of 2.7%. “In 2018, we will intensify our market share efforts in appliances, mattresses and furniture, while continuing to take steps to modernize our apparel assortment and omnichannel,” said Chief Executive Marvin Ellison in a release statement. The company expects 2018 same-store sales to be flat to up 2%, and adjusted EPS of 5 cents to 25 cents. The FactSet consensus is for same-store sales growth of 0.7% and EPS of 13 cents. J.C. Penney shares are up 16.7% for the last three months, but down 38.4% for the last12 months. The S&P 500 index is up 12.4% for the past year.