Dec. 19 (Bloomberg) -- U.S. stocks extended the longest losing streak since October as concern that holiday sales may disappoint dragged down retailers and technology shares
Today's decline was the broadest since October, as almost four stocks fell for every one that rose on the New York Stock Exchange.
A gauge of utilities companies slid 1.4 percent for the second-biggest drop in the S&P 500 among 10 industry groups.
An index of pharmaceutical shares in the S&P 500 jumped 2.5 percent, the only gain except for household-product makers among the index's 24 industry groups.
Pfizer jumped $1.74, or 7.7 percent, to $24.32.
GM fell 84 cents, or 3.8 percent, to $21.05, its lowest in 18 years.
Caterpillar Inc. fell $2.81, or 4.7 percent, to $56.83 for the worst performance in the Dow average.
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