Indian Energy Exchange shares faced restrictions. This happened after open interest crossed a limit. The National Stock Exchange imposed the ban. A regulatory order on power market coupling caused a ...

IEX ― a trading venue made famous by Michael Lewis' "Flash Boys" — and the New York Stock Exchange have gotten into a messy war of words.

IEX has implemented a controversial 350-microsecond delay, or “speed bump,” so that high-frequency traders can’t use their speed to “front run” slower traders.

Trading and market making firm Virtu Financial threw its support behind a proposal by IEX to launch a new U.S. options exchange, saying the initiative could promote competition and innovation.