• The Dow Jones Industrial Average .DJI fell 12.34 points, or 0.05 percent, to 25,952.48, the S&P 500 .SPX lost 4.8 points, or 0.17 percent, to 2,896.72 and the Nasdaq Composite .IXIC dropped 18.29 points, or 0.23 percent, to 8,091.25.

U.S. stocks fell on Tuesday as trade concerns lingered and declines in Facebook and Nike shares weighed on Wall Street’s major indexes, though data showing U.S. manufacturing activity accelerated in August kept losses in check.

• Facebook Inc (FB.O) shares fell 2.6 percent after brokerage MoffettNathanson downgraded the social media company, warning of revenue growth deceleration.

• Talks between the United States and Canada are scheduled to resume on Wednesday after the two parties ended their talks on Friday without a deal.

·         Asia markets were negative in morning action after Wall Street posted losses on its first trading day of the month.

·         Japan's Nikkei 225 traded down by 0.24 percent in the first part of the day, with the real estate sector seeing a loss of 1.39 percent. South Korea's Kospi was also trading lower by 0.36 percent, with semiconductor supplier SK Hynix falling by 1.35 percent.

·         In Australia, the ASX 200 continued the downward trend by sliding 0.31 percent lower in early trade.

Reference: Reuters, CNBC