After the outbreak of the epidemic, there were several melting points in the US stock market.

After the outbreak of the epidemic, there were four fuses in the US stock market. Because the panic caused by the spread of the COVID-19 epidemic has not been effectively alleviated, the US stock market has fluctuated violently recently, and the new york stock market has experienced four fuses in just two weeks. Us stocks blew five times, four of which occurred in March 2020. 1,19971kloc-0/On October 27th, the first fuse mechanism of US stocks was implemented in 1988, due to the June 1987 19 stock market crash. According to the provisions of the fuse mechanism of US stocks, during trading hours in the United States, the fuse mechanism can be divided into three levels, that is, when the market drops by 7%, 13% and 20%, the first, second and third levels of fuse are triggered respectively. However, after the implementation of the fuse mechanism, the first fuse in the history of US stocks did not appear until1October 27th, 1997. On that day, the Dow Jones Industrial Average plunged 7. 18% to close at 7 16 1. 15, the biggest drop since 19 15. However, this fuse has little impact on US stocks. The next day, the Dow Jones Industrial Average rebounded sharply by 337. 17 points, or 4.7 1%, to close at 7498.32 points. 2. On March 9, 2020, the second fuse of US stocks was affected by the COVID-19 epidemic and the collapse of international crude oil prices. On March 9, 2020, US stocks suffered another "Black Monday", which plunged at the opening, and the Standard & Poor's 500 Index fell by more than 7%, triggering the first-level fuse mechanism and suspending trading for 15 minutes. 3. March 12, 2020, the U.S. stock blew for the third time. March 12, 2020, 2 1: 35, triggered the third blow in the history of the U.S. stock market. After the opening of the day, the Standard & Poor's 500 Index fell to 7%, and US stocks were suspended for 15 minutes. 4. On March 6, 2020, the US stock market melted for the fourth time. At 9: 30am EST on March 16, the US stock market opened sharply, and the S&P 500 index fell by 7.47%, which triggered the fuse again and suspended trading for 15 minutes. On March 18, the panic brought by the COVID-19 epidemic to the financial market has not been effectively alleviated. The three major stock indexes in new york stock market opened sharply lower, and the Dow Jones Industrial Average and the Standard & Poor's 500 Index fell more than 7% at noon, triggering the fuse mechanism for the fourth time.