The major U.S. index futures are currently pointing to a modestly higher open on Wednesday, with stocks likely to move back to the upside after coming under pressure over the course of the previous session.Stocks may benefit from continued optimism about the artificial intelligence trade, which has helped lead the to record highs.A rebound by shares of Nvidia (NVDA) may generate some early buying interest, with the AI darling and market leader climbing by 0.4 percent in pre-market trading after tumbling by ...