The Dow industrials suffered their biggest one-day drop since Sept. 20, as last week's disappointing jobs report continued to reverberate and investors questioned whether stocks can sustain last year's rally.

Traders said no single piece of news drove the selloff, which came one session after the weaker-than-expected jobs report clouded the economic outlook. The Dow Jones Industrial Average shed 179.11 points, or 1.1%, to 16257.94, its fourth straight decline and its lowest finish since Dec. 20.

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