S&P 500 REGISTERS BEST MONTHLY GAIN SINCE OCT. 2011; NASDAQ BEST MONTH SINCE JAN. 2012 By: Reuters: Company News February 27, 2015 at 16:12 PM EST S&P 500 REGISTERS BEST MONTHLY GAIN SINCE OCT. 2011; NASDAQ BEST MONTH SINCE JAN. 2012 Read More >>