U.S. stock-index futures ticked slightly higher on Wednesday, with retail earnings take center stage and crude oil prices still in focus.
U.S. second-quarter earnings due on Wednesday include Shake Shack. Michael Kors posted quarterly results that beat expectations on both lines, but the stock was down more than 2.5 percent in the premarket. Wendy's also posted better-than-expected earnings per share and revenue. Ralph Lauren shares popped more than 7 percent after its earnings came in sharply above expectations.