Investors Exchange is a stock exchange based in the United States. It was founded in 2012 and launched as a national securities exchange in September 2016. On October 24, 2017, IEX received regulatory approval from the SEC to list companies. IEX listed its first public company, Interactive Brokers, on October 5, 2018. The exchange said that companies would be able to list for free for the first five years, before a flat annual rate of $50,000. On September 23, 2019 it announced it was exiting its listing business.
In September 2019, IEX announced that Co-founder and COO John Schwall would retire from the company by the end of 2019.
The genesis and early days of the exchange are chronicled in the 2014 book Flash Boys: A Wall Street Revolt by Michael Lewis.