Major U.S. stock-indexes reversed course to trade lower on Thursday as concerns over the tightening race for the White House and a fall in Facebook's shares weighed on sentiment. Facebook (FB) fell as much as 5,9% to a more than three-month low of $119.61 after the social media giant warned that revenue growth would slow this quarter. The stock was the biggest drag on the S&P and the Nasdaq.

Most of Dow stocks in negative area (18 of 30). Top gainer - The Walt Disney Company (DIS, +1.72%). Top loser - Intel Corporation (INTC, -1.68%).

Almost all S&P sectors also in negative area. Top gainer - Utilities (+0.7%). Top loser - Conglomerates (-1.1%).

At the moment:

Dow 17878.00 -3.00 -0.02%

S&P 500 2088.25 -4.00 -0.19%

Nasdaq 100 4691.75 -25.00 -0.53%

Oil 44.51 -0.83 -1.83%

Gold 1303.40 -4.80 -0.37%

U.S. 10yr 1.82 +0.02