Wall Street sinks on Boston blasts, commodities selloff

The S&P 500 posted its worst day in more than four months on Monday, as big drops in the price of gold and other commodities triggered a broad selloff in equities.

The S&P 500 posted its worst day in more than four months on Monday, as big drops in the price of gold and other commodities triggered a broad selloff in equities.

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The three major US stock indexes extended declines in afternoon trading after reports of explosions near the finish line of the Boston Marathon.

The Dow Jones industrial average fell 265.86 points or 1.79%, to end unofficially at 14,599.20.

The S&P 500 lost 36.48 points or 2.30%, to finish unofficially at 1,552.37. The Nasdaq Composite dropped 78.46 points or 2.38%, to close unofficially at 3,216.49.