By: Emiliano Rodríguez Mega, Maureen Farrell, Saif Hasnat, Jeanna Smialek, Eshe Nelson, Stephen Castle, Keith Bradsher, Colby Smith, Matthew Mpoke Bigg, Ben Casselman, Jeff Sommer, Joe Rennison, Michael J. De La Merced, Rob Copeland, Ana Swanson, Rich Barbieri, Jenny Gross, Yan Zhuang, Tony Romm, Pablo Robles, Liz Alderman, David Pierson, Lauren Hirsch, Melissa Eddy, Alex Travelli
The S&P 500 swung wildly after more losses in Asia and Europe. President Trump said he would not back off his trade war, reinforcing fears of a global economic downturn.