S&P 500 at 6,616.85, Nasdaq at 22,017.85, Dow at 46,584.46

US markets closed April 6 firmer on Pakistan mediation expectations: S&P 500 +0.08 percent to 6,616.85, Nasdaq +0.10 percent to 22,017.85, while the Dow declined 0.18 percent to 46,584.46.