US STOCKS-Wall St ends lower as factory data adds to growth worries
* China factory activity at 6-1/2-yr low in September
* U.S. factory activity stays at 2-yr low in September
* Materials and energy sectors lag
* Indexes down: Dow 0.3 pct, S&P 0.2 pct, Nasdaq 0.1 pct (Updates to close)
By Caroline Valetkevitch
Sept 23 (Reuters) - U.S. stocks ended down slightly on Wednesday, led by losses in materials and energy shares as weak Chinese and U.S. factory data added to growth worries.
Trading was choppy once gain, with the S&P 500 briefly trading higher following afternoon comments by Chinese President Xi Jinping that his country was capable of maintaining a relatively high growth rate for a long time.
The S&P 500 is down 2.8 percent since Thursday, when the Federal Reserve decided to hold interest rates near zero.
Data showed U.S. manufacturing growth stayed at a two-year low in September, while Chinese factory activity shrank to a 6-1/2 year low in the month, underscoring worries about demand. Continuación...