On March 9, 2020, the Dow Jones fell by 7.79% (2,013 points) on fears of the COVID-19 coronavirus and falling oil prices, and the S&P 500 triggered a market shutdown for 15 minutes just moments after opening. Three days later on March 12 and again on March 16 early trading again tripped the level-1 circuit breaker when the markets dropped over 7%. On March 18 the breaker was triggered again at one in the afternoon, several hours after trading opened.
