The U.S. Securities and Exchange Commission has several active investigations into possible wrongdoing by high-frequency stock traders and other equity market structure issues, SEC Chair Mary Jo White said Tuesday. "We currently have... a number of ongoing investigations regarding various market integrity and structure issues, including high-frequency traders and automated trading," White told a U.S. House of Representatives appropriations panel. "We are very much focused on any abuses in that space." On Monday, the FBI confirmed it has been conducting a wide-ranging probe into high-speed trading for months, an outgrowth from the years-long crackdown on insider-trading. An FBI spokesman who did not wish to be named said Monday night that the bureau was investigating whether high-frequency traders are front-running others' trades by getting to exchanges first. A big trade, such as a bank shorting a million shares of a company under investigation, could be considered a material
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