U.S. stock futures were higher this morning, with the Dow futures gaining more than 50 points on Monday.Shares of New Mountain Finance Corporation NMFC fell sharply in pre-market trading.B of A Securities analyst Derek Hewett downgraded New Mountain Finance from Buy to Underperform and cut the price target from $11.75 to$10.New Mountain Finance shares dipped 4.4% to $10.01 in the pre-market trading session.Here are some other stocks moving lower in pre-market trading.Kindly MD Inc NAKA shares tumbled 37.1% ...