Referred to as the most powerful person on the market floor by Michael Lewis, Brad Katsuyama is the subject of Lewis’s latest best-seller, Flash Boys: A Wall Street Revolt—one of the most provocative books ever to hit the financial market. The story reveals how the much talked about practice of computerized high-frequency trading (HFT) has allowed certain Wall Street players to work the stock market to their advantage. As the former Head of Electronic Sales & Trading at RBC, Brad Katsuyama noticed the seemingly small discrepancies (often fractions of a penny) that, when compounded, were costing his clients and many other major market players millions of dollars. Brad uncovered the inner-workings of this computerized trading system, and was one of the first to draw attention to a practice that—as Lewis puts it—is “rigging the market.” Brad helped devise a plan to identify and correct the effects of HFT tactics with the creation of IEX (the Investors Exchange), an upstart stock trading venue designed to institutionalize fairness through the use of technology.

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