Wall Street's main indexes dropped at the open on Monday as fears of a full-blown trade war and its impact on the global economy jolted markets around the world after President Donald Trump levied steep tariffs on Mexico, Canada and China. https://economictimes.indiatimes.com/markets/stocks/news/nasdaq-crashes-400-points-at-open-sp-down-over-1-as-trumps-tariffs-trigger-risk-aversion/articleshow/117890919.cms