MarketsMarkets MagazineBrad Katsuyama’s Next ChapterHis once tiny dark pool got a big boost from ‘Flash Boys.’ Now, this unlikely celebrity is out to prove IEX Group has what it takes to become a public stock exchange.Brad Katsuyama, CEO and co-founder of IEX in New York Photographer: Alan Clarke/Bloomberg MarketsFacebookTwitterLinkedInEmailLinkGiftFacebookTwitterLinkedInEmailLinkGiftBy Jeremy KahnAugust 23, 2015 at 7:00 PM EDTBookmarkSave