Once triggered on Aug. 1, the dormant system started multiplying stock trades by one thousand, according to the people, who spoke anonymously because the firm hasn’t commented publicly on what caused the error. Knight’s staff looked through eight sets of software before determining what happened, the people said.
Knight, based in Jersey City, New Jersey, hasn’t explained in detail what caused the trading losses, which depleted its capital and led to a $400 million rescue that ceded most of the company to a group of investors led by Jefferies Group Inc. (JEF) The 45-minute delay in shutting down the malfunction has confused some securities professionals, who say that trading programs can typically be disabled instantly.
http://www.bloomberg.com/news/2012-08-14/knight-software.html
