Key indices at Wall Street end sharply lower

On Wall Street, key indices ended sharply lower yesterday, as risk aversion sentiment gripped investors on concerns over the pace of global growth and a possible spillover from China Evergrande's troubles, ahead of the Federal Reserve's policy meeting later this week.   All the 11 major S&P sectors declined. Economy-sensitive industrials, financials  and energy dropped between 1.9 percent and 4 percent.  The banking sub-index shed 3.9 percent, tracking US Treasury yield...