On October 16, the U.S. stock market closed on Tuesday, the Dow index initially closed down 0.75%, the S & P 500 index fell 0.76%, and the Nasdaq index fell 1%. The Philadelphia Semiconductor index fell more than 5%, Nvidia (NVDA. O) fell 4.6%, AMD (AMD. O) fell 5%, and ASML (ASML. O) fell 16%. The Nasdaq China Golden Dragon index closed down 5.9%, Alibaba (BABA. N) fell 5.5%, and JD.com (JD. O) fell 9%.