The Hounslow trader accused of helping trigger the Flash Crash of 2010 sent 7.4 million 'trade modification' messages – sometimes seen as a sign of abusive trading – on a single day, according to prosecutors seeking to extradite him to the US.
Navinder Singh Sarao's trade modification messages on the CME market for E-mini futures sent on April 29, 2010 amounted to 42% of all such messages sent across the market, according to Mark Summers QC in opening arguments seeking to get Sarao sent to the US for trial.