U.S. stock index futures slipped on Wednesday after a sharp rally in the previous session, when easing tariff tensions boosted sentiment, as investors focused on AI bellwether Nvidia's upcoming earnings and developments on the trade front.

US stock futures are slightly up ahead of Nvidia Corp.’s earnings as investors waited to gauge the impact of the trade war and outlook for artificial intelligence.

U.S. stock index futures climbed on Sunday evening after President Donald Trump announced a delay in the proposed 50% tariffs on the European Union, easing investor concerns and lifting market sentiment.