US stock futures are down marginally on Sunday evening following Fed Chair Jerome Powell's dovish comments on Friday, during the Federal Reserve's annual Jackson Hole symposium, where he hinted at a potential rate cut in September.

Now, Wall Street is bracing for Nvidia earnings, which land Wednesday after the bell. Expectations for its results are sky-high, with the company's stock up almost 34% so far this year, even as restrictions on chip sales to China have possibly cost the company billions.