Stock market today: Dow, S&P 500, Nasdaq futures slump as US-China trade tensions rattle nerves

Market Overview - US stock futures declined as China retaliated against US shipping restrictions, raising trade-war concerns among investors [1][2] - Dow Jones Industrial Average futures fell by 0.4%, S&P 500 futures dropped by 0.7%, and Nasdaq 100 futures decreased by 0.9% [1] Trade Relations - China imposed sanctions on five US-linked subsidiaries of South Korean shipbuilding firm Hanwha Ocean in response to US barriers [2] - An investigation has been launched by China regarding the impact of a US probe on its domestic shipping industry [2] Earnings Season - The earnings season commenced with major banks such as JPMorgan Chase, Citigroup, Goldman Sachs, and Wells Fargo reporting results [3] - Analysts anticipate rising profits from Wall Street banks, which have seen stock rallies throughout the year [3] Economic Reports - Key economic reports are delayed due to a government shutdown, affecting both investors and the Federal Reserve's economic outlook [4] - The consumer inflation report, initially expected on Wednesday, has been postponed to October 24, with other reports on retail sales and producer prices also likely delayed [4] Federal Reserve Insights - The absence of economic reports increases the significance of Fed Chair Jerome Powell's speech at the NABE annual meeting [5]