U.S. stock futures were mixed this morning, with the Nasdaq futures gaining around 0.1% on Thursday.Shares of DoorDash Inc (NASDAQ:DASH) fell sharply in pre-market trading after the company reported mixed third-quarter financial results.DoorDash reported quarterly earnings of 55 cents per share, which missed the consensus estimate of 68 cents by 19.24%. Quarterly revenue clocked in at $3.44 billion, which beat the analyst consensus estimate of$3.35 billion.DoorDash shares dipped 10.5% to $213.00 in pre-mar ...