U.S. stock index futures pointed to a flat to slightly higher open on Wednesday, as investors got ready to wade through another influx of earnings reports, while monitoring for news on the Federal Reserve.

Earnings are set to be front and center, as big U.S. brands are set to report. Out of the group, investors will be watching for financial news out of American Express, eBay, and Mattel. Halliburton posted mixed quarterly results, missing on revenue but beating on earnings. Meanwhile, Morgan Stanley shares rose 1 percent before the bell after easily beat profits estimates.