Navinder Sarao, the British trader accused by US authorities of contributing to the 2010 stock market “flash crash,” pleaded guilty in Chicago on November 9, becoming the second trader to be convicted of using a bluffing tactic called “spoofing” that was made illegal by the Dodd-Frank law.

Sarao, a 37-year-old West London trader who had operated out of his home, pleaded guilty to one count of wire fraud and one count of spoofing, the US Justice Department said.