U.S. stock futures were higher this morning, with the Nasdaq 100 futures gaining more than 200 points on Wednesday.Shares of Qorvo, Inc. (NASDAQ:QRVO) fell sharply in pre-market trading after the company reported third-quarter financial results and issued fourth-quarter sales guidance below estimates.Qorvo shares expects fiscal fourth-quarter revenue to be in the range of $775 million to$825 million versus estimates of $904.59 million. The company anticipates adjusted earnings of$1.05 to $1.35 per share i ...