Citadel blasts IEX's 'Flash Boys' exchange plans
November 09, 2015 at 15:10 PM EST
NEW YORK, Nov 9 (Reuters) - Hedge fund and high-frequency trading (HFT) firm Citadel LLC has asked regulators to deny the U.S. exchange application of "Flash Boys" heroes IEX Group, saying a key element of the trading platform is unfair and would harm market quality.