S&amp;P 500 UNOFFICIALLY CLOSES DOWN 3.15 POINTS, OR 0.08 PERCENT, AT 3,899.47  DOW JONES UNOFFICIALLY CLOSES DOWN 48.41 POINTS, OR 0.15 PERCENT, AT 31,336.14  NASDAQ UNOFFICIALLY CLOSES UP 17.99 POINTS, OR 0.15 PERCENT, AT 11,639.34