Flash Boys, the latest book from Michael Lewis (author of Liar’s Poker, Moneyball, The Blind Side, The Big Short, etc.), is a nonfictional account of the development of high-frequency trading (HFT) in U.S. equity markets, and of Brad Katsuyama’s quest to reform the system by creating a new trading platform, IEX, designed to resist the most damaging HFT strategies.