flash crash

Federal prosecutors say that Navinder Singh Sarao used a computer program to "spoof" the markets, sending the Dow down 600 points in a matter of minutes in 2010.

U.S. prosecutors say the U.K. man contributed to the 2010 flash crash that wiped about $800 billion from the value of shares. He told a London court that he opposes extradition to the U.S.