US stocks opened higher on Tuesday as the European Union announced to speed up trade negotiations with the US, leading to a positive market sentiment.The Dow Jones Industrial Average rose by 1% to surpass 42,000 points, while the Nasdaq Composite increased by 1.6% to cross 19,000 points.The S&P 500 also advanced by 1.1% to reach 5,866 points.JPMorgan analysts remain optimistic about the upward trajectory of the S&P 500 despite a recent pullback in US equities.