London day trader Navinder Sarao has been formally indicted by a US federal grand jury on charges of market manipulation that prosecutors say helped contribute to the 2010 “flash crash”, according to a court filing made public on Thursday. The Justice Department first announced criminal charges against Sarao in April and is seeking to have him extradited to the US to stand trial. He was released on bail at the end of August, but lawyers were unable to delay his extradition hearing, which is scheduled for late September. Prosecutors have accused Sarao of using an automated trading programme to “spoof” markets by ... (full story)