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Alex Frino, professor at Macquarie Graduate School of Management, says that no evidence has been found to link high-frequency trading to increased volatility but that it can improve liquidity.
Urs Rüegsegger, group CEO of Six Group, says high frequency trading within the rules is not a concern, but "dark pools" are a concern.
Federal agents are investigating whether high-speed trading companies violate laws by using fast-moving market data not available to other traders.
Irene Aldridge, Able Alpha Trading managing partner and "High Frequency Trading" author, explains why she thinks Michael Lewis was paid to write an "anti- high frequency novel."
CNBC's Eamon Javers reports on a recent dispute between "Flash Boys" author Michael Lewis and a BNP Paribas banker.
CNBC senior contributor Larry Kudlow and Thomas Sporkin, BuckleySandler LLP partner, discuss the controversy over high-frequency trading and the need for consolidation in the stock market.
CNBC's Bob Pisani, and Peter Sorrentino, Huntington Funds senior VP, discuss Michael Lewis' allegations the stock market is "rigged."
Michael Lewis' new book "Flash Boys" takes on high-frequency trading. CNBC's Eamon Javers provides insight.
Discussing Michael Lewis' allegations about high-frequency trading in his new book "Flash Crash," with billionaire investor and entrepreneur Mark Cuban, and Eric Hunsader, Nanex founder.
Billionaire investor and entrepreneur Mark Cuban discusses the algorithms high frequency traders use, and the risks involved.
Ex-Galleon trader Turney Duff said they "knew somebody was stealing" from them but for Michael Lewis to call the market "rigged" isn't quite right.
Billionaire investor and entrepreneur Mark Cuban reacts to Michael Lewis' allegations the stock market is "rigged," and what risks exist with high-frequency trading.
Michael Gayed, chief strategist at Pension Partners, argues that high-frequency trading doesn't add much to market dynamics and says the market appears to be in the early stages of a correction.
Art Cashin, UBS director of floor operations, shares his thoughts on high-frequency trading and explains how it actually influences the stock market.
CNBC's Rick Santelli discusses high-frequency trading and the power of the stock market.
Henry Blodget, Business Insider editor-in-chief & CEO, weighs in on the controversy surrounding high frequency trading and the book "Flash Boys," where author Michael Lewis argues the stock market is fixed.
Author Michael Lewis sparked a debate, though, by alleging the markets are tipped in favor of high-frequency traders.
CNBC's Bob Pisani and Ben Willis, Albert Fried & Company managing director, discuss assertions by author Michael Lewis that the stock market is rigged in favor of high-speed electronic trading firms.
California gubernatorial candidate Neel Kashkari, a former managing director at Pimco, tells CNBC that trading on nanoseconds should be regulated.
The "Squawk on the Street" news team discusses the book "Flash Boys" by Michael Lewis who argues the stock market is fixed.