US Treasuries also fell, pushing yields on 10-year notes as high as 2.82 per cent, the highest in two years. The greenback weakened as well, sliding 0.6 per cent against the euro and 0.8 per cent against the yen.
In July, American employers added 162,000 jobs, pushing the unemployment rate down to 7.4 per cent, the lowest level in more than four years.
"The critical component is going to be the August jobs report," Carl Riccadonna, a senior economist at Deutsche Bank Securities in New York, told Reuters. "If that comes in at least where it was in July, then this is going to keep the Fed on track to initiate tapering at the September meeting."
Separate reports today showed that the consumer price index rose 0.2 per cent in July, after a 0.5 per cent increase in June, while home builder confidence advanced to 59 in August, the highest level since 2005, from a revised 56 in July.
Shares of Cisco plunged, last down 7 per cent, leading the decline in the Dow, followed by a 4.5 per cent drop in shares of Hewlett-Packard.
Cisco said it would axe 4,000 jobs as the company predicted revenue that fell short of estimates.
Shares of Wal-Mart fell, last down 2.8 per cent, after the world's largest retailer downgraded its full-year profit forecast.
Oil prices rose, pushing Brent to the highest level in four months, boosted by concern about the deteriorating situation in Egypt. Gold surged 2 per cent in response to the drop in the S&P 500.