Learn about the IEX Core Trading System.
We built a new, responsible listings venue.
Listings data and documentation for investors, companies, and market participants.
Live and historical statistics from IEX.
Free, real time stock quotes, charts, trading analyses, financial news, and market overview.
Near-real-time traded volume on the markets.
IEX's aggregated best quoted bid and offer position in real-time for all securities on IEX's displayed limit order book.
Developer tools, including our free, reliable API.
Guide to Exchange membership and connectivity.
IEX Rule Book, manuals, specifications, and resources as well as Exchange membership, data, and connectivity applications and agreements.
Daily list, short interest, threshold securities, documents, and more.
Regulatory resources and information.
Data-driven research and analysis.
Learn about our history and our mission.
Meet the talented people who work at IEX.
Read about new developments and ideas directly from IEX employees.
Read press releases and news articles concerning IEX.
Bloomberg op-ed by John Ramsay
March 20, 2018
Read IEX’s letter petitioning the SEC to modernize Rule 10b-18 by allowing buyback trades priced at the midpoint of the national best bid and offer (“NBBO”) to qualify for the safe harbor treatment provided by the Rule.
March 27, 2018
Read the petition co-signed by IEX along with multiple sellside and buyside participants petitioning the SEC to initiate rulemaking to require exchanges to disclose more information about market data fees, institute a public notice and comment process for rule filings related to market data fees, and conduct a review of the existing market data fee structure.
December 6, 2017
Read IEX’s letter to the SEC responding to comments from NYSE, Nasdaq and Cboe and recommending changes to the EMSAC’s proposal for a pilot to test alternatives to the existing “maker-taker” exchange fee system.
November 15, 2017
Read IEX’s response to comments on the amendment to IEX’s fee schedule to assess a fee under certain circumstances for orders taking liquidity while the quote is crumbling.
October 2, 2017
Read IEX’s letter to the SEC supporting Bats’ proposal to promote healthy competition through a new closing match process.
June 23, 2017
Read IEX’s blog post suggesting that the SEC require exchanges to disclose market data and connectivity revenues, to enable an objective, data-driven debate.
June 21, 2017
Read IEX’s second letter to the SEC requesting additional justification and detail from NYSE around the proposal.
April 21, 2017
Read IEX’s letter to the SEC requesting additional justification and detail from NYSE around the proposal.
March 10, 2017
Read IEX’s letter to the SEC opposing Nasdaq’s proposal to require identification of Extended Life Orders on its proprietary data feed.
March 2, 2017
Read IEX’s second letter to the SEC opposing Nasdaq’s proposal to charge participants a new fee to receive third-party, including UTP, data.
February 15, 2017
Read IEX's second letter to the SEC opposing NYSE's practices in charging for access and market data.
December 21, 2016
Read IEX's letter to the SEC opposing Nasdaq's proposal to charge participants a new fee to receive UTP data.
December 9, 2016
Read IEX's letter to the SEC opposing NYSE's practices in charging for access and market data.
September 9, 2016
Read IEX's third letter in response to material comments raised by market participants on IEX's Form 1 application.
February 9, 2016
Read IEX's second letter in response to material comments raised by market participants on IEX's Form 1 application.
November 23, 2015
Read IEX's first letter in response to material comments raised by market participants on IEX's Form 1 application.
November 13, 2015
Read IEX's comments to the SEC's proposal to extend the LULD pilot period.
October 16, 2015
Read IEX's letter to the SEC regarding information asymmetry between NYSE Trades product and CTA Plan.
August 20, 2015
Read IEX's letter to the SEC offering suggestions for consideration by the Commission, the plan participants, and the industry as ways to enhance the operation of the SIPs and contribute to the improvement of governance of NMS Plans in general, and the SIPs in particular.
December 10, 2014
Read the IEX BATS PBBO Comment Letter.
September 25, 2014
U.S. House of Representatives Committee on Financial Services Subcommittee on Capital Markets, Securities, and Investment