US equity markets open in negative zone on Tuesday

Major US stock markets opened in the red amid falling oil prices and Brexit fears. At the session start, Standard & Poor's 500 Index dropped 0.13%, opening at 2,076.38 points. Meanwhile, the Dow Jones Industrial Average Index declined 0.15% to start at 17,705.81, and the Nasdaq Composite Index lost 0.01% to open at 4,848.05 points.