US STOCKS SNAPSHOT-S&P posts best day since Oct 2013 after Fed
December 17, 2014 at 16:11 PM EST
NEW YORK, Dec 17 (Reuters) - U.S. stocks rallied on Wednesday, giving the S&P 500 its best day since October 2013 as the Federal Reserve gave an upbeat assessment of the economy and said it would take a patient approach toward lifting interest rates.