US stocks tumbled to begin the session on Tuesday, pressured by disappointing results from large multinational companies.
The losses were across the board, with all 10 big-cap sectors of S&P 500 lower and materials and energy stocks among the biggest losers.
Shares of DuPont plunged nearly 7 percent after the chemical company reported a profit that fell short of expectations and announced 1,500 layoffs in an aggressive cost-cutting move.
3M also tumbled nearly 3.5 percent as the company cut its profit expectations for this year due to "current economic realities."
Also attracting investors' attention, the Federal Reserve is going to begin a two-day policy meeting on Tuesday, but few achievements are expected amid the election.
Shortly after the opening bell, the Dow Jones industrial average tumbled 173.28 points, or 1.30 percent, to 13,172.61. The Standard & Poor's 500 was down 18.25 points, or 1.27 percent, to 1,415.57. The Nasdaq Composite Index fell 30.30 points, or 1.00 percent, to 2,986.66.
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