Costco Wholesale ( COST ) beat consensus on first quarter of fiscal 2018 results, and the stock jumped 2.34% in after-hours trading Thursday. The chart below shows Costco's total revenue over the last six quarters: In the first quarter of fiscal 2018, the U.S. wholesale hypermarket chain company reported a 10.5% year-over-year jump in comparable sales including the item of gas, inflation and foreign exchange. Costco Wholesale Corp. is currently trading at $186.53 per share on the Nasdaq stock exchange.