US STOCKS-Wall Street finishes down as U.S.-China tensions heighten trade deal worries By: Reuters: Company News May 21, 2020 at 16:12 PM EDT * Indexes: Dow -0.41%, S&P 500 -0.78%, Nasdaq -0.97% (Updates with market close) Read More >> Related Stocks: Amazon.com Best Buy L Brands Microsoft TJX Companies