Update: Trading resumes in New York after S&P 500 plunge

US stocks plunged the most since the 2010 flash crash as a full-blown crude price war rattled financial markets already on edge over the spreading coronavirus. Treasury yields plummeted, oil sank more than 30% and credit markets buckled.
The S&P 500 is now down almost 19% from its Feb. 19 all-time high, threatening to end the record-long bull market that began 11 years ago to the day. NYSE circuit breakers halted trading for 15 minutes starting at 9:34 am in New York, in a move designed to limit panic. The next circuit breaker will trip if losses reach 13%.