Wall Street closes mixed, S&P 500 ends off record high

U.S. stocks closed mostly lower on Wednesday, with the S&P 500 falling from a record high after data signaled a slowdown in jobs growth in July, and General Motors tracked its worst day since early March.
US dollar, stocks dip as Fed keeps taper timing close to chest

U.S. stocks and the dollar slipped on Wednesday in listless trade after the Federal Reserve gave no clue about when it might start reducing its purchases of government bonds, even as it said the economic recovery is on track.