US equity markets slumped as the US-China trade war ratcheted up yet again and overshadowed Federal Reserve Chair Jerome Powell's address at the Jackson Hole Economic Policy Symposium - Dow tumbled -623-points or -2.37% The broader S&P500 fell -2.59%, with Energy (down -3.37%) and Information Technology (-3.31%) leading all eleven primary sectors lower. The technology-centric NASDAQ dropped -3.00%, with Apple Inc down -4.1%. Chipmakers were also under heavy pressure, with Nvidia down -% and Broadcom -%. The benchmark indices posted weekly losses for a fourth straight time, with the Dow down -0.99%, S&P500 -1.44% and Nasdaq -1.83%.