Worldwide markets roiled by data-center snafu in Chicago suburb

One of the first signs of trouble arrived at 9:41 p.m. Eastern time on Thursday, when most of Wall Street was shut and traders were still enjoying the Thanksgiving holiday in the US.“Due to technical issues,” CME Group Inc. said in a one-line email to clients, its futures and options “markets have been halted.”The problem, it turned out, was the cooling system at a data-center complex in the suburban town of Aurora, Illinois, some 50 miles (80 kilometers) from Chicago, which serves as the main hub for trill ...