KEEPING SCORE: The Standard & Poor's 500 index edged up six points, or 0.3 percent, to 2,114 as of 10:15 a.m. The Dow Jones industrial average rose 63 points, or 0.3 percent, to 18,190 while the Nasdaq composite slipped two points, or 0.1 percent, to 5,024, not far from its all-time high, last seen during the dot-com bubble in 2000. WARNING: Shares in Gilead Sciences fell following news that the pharmaceutical company told physicians that nine patients taking its hepatitis C treatments developed slow heartbeats and that one died.