How a Mystery Trader With an Algorithm May Have Caused the Flash Crash

by Silla Brush, Tom Schoenberg and Suzi Ring,  Bloomberg

From a modest stucco house in suburban west London, where jetliners roar overhead on their approach to Heathrow Airport, a small-time trader was about to play a hand in one of the most harrowing moments in Wall Street history.

Navinder Singh Sarao was as anonymous as they come — little more than a day trader by the standards of the Street.

But on that spring day five years ago, U.S. authorities now say, Sarao helped send the Dow Jones Industrial Average on the wild, 1,000-point ride that the world came to know as the flash crash. By regulators’ account, he was responsible for a stunning one out of five sell orders during the frenzy. On Tuesday, he was arrested by Scotland Yard and charged in the U.S. with 22 criminal counts, including fraud and market manipulation.  Read the entire story.

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