Eric Holder: Justice investigating high-speed trading

Published April 4, 2014 4:47pm ET



The Department of Justice is investigating high-frequency stock trading to see if any of the practices violate insider trading laws, U.S. Attorney General Eric Holder said Friday.

Brokerage firms use high-frequency trading to get a jump on their competitors. Powerful computers analyze market information and then execute buy and sell orders for stocks within a fraction of a second.

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