U.S. stock futures were higher this morning, with the Dow futures gaining around 200 points on Friday.Shares of DexCom, Inc. DXCM fell sharply during Friday's pre-market trading after the company reported worse-than-expected second-quarter revenue results and issued weak FY24 revenue guidance.DexCom reported quarterly earnings of 43 cents per share, which beat the analyst consensus estimate of 39 cents. Quarterly sales came in at $1.004 billion which missed the analyst consensus estimate of$1.036 billion.D ...