Equities slumped on both sides of the pond as concern prevailed that this week's two-day summit of European Union leaders will produce little in the way of turning around the debt crisis.
In late afternoon trading in New York, the Standard & Poor's 500 Index declined 1.71 per cent. The Dow Jones Industrial Average dropped 1.27 per cent, while the Nasdaq Composite Index weakened 2.00 per cent.
In Europe, the Stoxx 600 Index ended the day with a loss of 1.5 per cent on the previous session. That erased its gain for the year, according to Bloomberg News.
Among other signs of concern about Europe's outlook were another drop in oil prices and the direction of bond yields - those on US Treasuries, a perceived safe-haven, are falling while those on Spain and Italy are flying high.
The 10-year US note yield shed seven basis points to 1.61 per cent, according to Bloomberg Bond Trader prices, posting the largest intraday drop since June 15