Wall St logs steepest one-day fall in 2012

Dow Jones Industrial Average closed down 213.66 points, or 1.65 per cent at 12,715.93, biggest one-day drop this year amid concerns over global economy.
The S&P 500 slipped 23.61 points, or 1.71 per cent, to close at 1,358.59.
All 10 key S&P sectors finished firmly in the red, led by consumer discretionary and banks
The Nasdaq fell 55.86 points, or 1.83 per cent, to end at 2,991.22.