S&amp;P 500 DOWN 2.79 POINTS, OR 0.07 PERCENT, AT 3,851.64 AFTER MARKET OPEN  NASDAQ UP 50.63 POINTS, OR 0.45 PERCENT, AT 11,423.23 AFTER MARKET OPEN  DOW JONES DOWN 74.88 POINTS, OR 0.24 PERCENT, AT 31,098.96 AFTER MARKET OPEN