US STOCKS-Mounting trade concerns bog down Wall Street By: Reuters: Company News October 08, 2019 at 12:05 PM EDT * Indexes down: Dow 1.07%, S&P 500 1.21%, Nasdaq 1.18% (Updates prices, adds comments) Read More >> Related Stocks: Alibaba Group Holding Ltd Ambarella Inc Baidu.com SP ADR Boeing Co Intel Corp Jd.com Inc ADR NVIDIA Corp Seagate Technology Plc Western Digital