U.S. stocks opened higher on Monday, extending Friday's rally, with oil prices sliding and investor sentiment showing improvement ahead of the flow of quarterly earnings reports that begins this week. The Dow Jones industrial average <.DJI> was up 7.97 points, or 0.08 percent, at 10,200.62. The Standard & Poor's 500 Index <.SPX> was up 3.12 points, or 0.28 percent, at 1,134.62. The technology-laced Nasdaq Composite Index <.IXIC> was up 13.72 points, or 0.71 percent, at 1,955.92.///