Robert Stowe England To Prevail, the Feds Must Prove Nav Sarao’s Trading Intentions In the case of Nav Sarao, the alleged flash crash trader arrested April 21, the prosecution will likely focus on the defendant’s intent. Robert Stowe England May 1, 2015 01AF2KCU - Close-up of a Wall Street sign, Wall Street, Manhattan, New York City, New York State, USA SANSA Images