The debate that engrossed observers of the equity markets over the application of the dark pool featured in Michael Lewis’s Flash Boys: A Wall Street Revolt, has faded. As well, the Investors Exchange LLC (“IEX”), application for approval as public exchange has died down for the time being. What may reignite the controversy is the filing of a suit threatened by other exchanges or high frequency traders, or both, challenging the SEC’s June 2016 decision to approve the applicat