High-frequency brawl sparks fiery debate

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High-frequency brawl sparks fiery debate

High-frequency brawl sparks fiery debate
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High-frequency brawl sparks fiery debate

by CNBC Videos 2:21 mins

CNBC's Bob Pisani provides insight on yesterday's testy exchange between Brad Katsuyama of IEX and BATS Global Markets' William O'Brien over accusations the markets are rigged. And "Flash Boys" author Michael Lewis sidesteps the question whether he th...

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