Wall Street moved lower overnight as Wal-Mart shares dropped on a downgraded sales outlook, while oil gave up some its earlier gains after a report showing an increase in US stockpiles.
In 13.11pm New York trading, the Dow Jones Industrial Average slipped 0.1 percent, while the Nasdaq Composite Index dropped 0.6 percent. In 12.56pm trading, the Standard & Poor's 500 Index fell 0.2 percent.
The Dow moved lower as declines in shares of Wal-Mart Stores and those of Caterpillar, last down 3.7 percent and 2.6 percent respectively, outweighed gains in shares of IBM and those of Johnson & Johnson, last up 5.1 percent and 1.7 percent respectively.
Wal-Mart posted a decline in quarterly earnings and downgraded its annual sales outlook.
"Net sales growth is now expected to be relatively flat, which compares to the previous estimate for growth of 3 to 4 percent on a constant currency basis," the company said in a statement. "This change reflects the impact from recently announced store closures globally, as well as the continued strengthening of the US dollar. Excluding the impact of currency and store closures, our net sales growth guidance would have remained in the 3 to 4 percent growth range."