U.S. stock futures were mixed on Wednesday, as the Dow Jones index rose, while the S&P 500 and Nasdaq 100 indices slipped.

U.S. stock futures were mixed on Monday, as the Dow Jones index rose, the S&P 500 and Nasdaq 100 indices fell, after Friday's higher close.

Investors turned cautious ahead of Nvidia's earnings and a closely watched inflation report. Both are due later this week.