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    We're a different kind of stock exchange.

    How you can take it to D-Limit

    Boxes and Lines Blog

    John Ramsay

    Chief Market Policy Officer

    Ronan Ryan

    Co-Founder and President

    Stan Feldman

    Business Analytics

    Ronan Ryan

    Co-Founder and President

    1 of 4

    To D-Limit and Beyond: Impact on IEX Exchange and the Broader Market

    In this post, we use five months of D-Limit data (comparing May-September 2020 to October 2020-February 2021) to show how those expectations have come to life in terms of both IEX Exchange's trading quality and the dynamics of the broader market. We also show how the concerns raised during the approval process have not materialized in the data.

    Losing Transparency in America's Stock Markets: How to Bring More Trading into the Light

    A high level of transparency is one of the great strengths of U.S. equity markets. Transparency in our markets is heavily dependent on the use of displayed bid and offer prices by exchanges. Only exchanges are required to provide this level of transparency, and only exchanges now do so. But the proportion of market activity occurring on exchanges and resulting from displayed prices, also called "lit trading," has been steadily eroding for many years.

    A Better Way to Charge for Market Data

    Starting January 3, IEX Exchange will charge for market data. I know reading this sentence might make you want to show up at my house with a pitchfork, but before you do, I'm hoping you'll at least read the rest of this blog.

    D-Limit: One Year In

    One year ago this month, IEX Exchange launched "D-Limit," a new order type that was designed to do something that hadn't been done in many years: make the quality of displayed trading better.

    To D-Limit and Beyond: Impact on IEX Exchange and the Broader Market

    In this post, we use five months of D-Limit data (comparing May-September 2020 to October 2020-February 2021) to show how those expectations have come to life in terms of both IEX Exchange's trading quality and the dynamics of the broader market. We also show how the concerns raised during the approval process have not materialized in the data.

    Losing Transparency in America's Stock Markets: How to Bring More Trading into the Light

    A high level of transparency is one of the great strengths of U.S. equity markets. Transparency in our markets is heavily dependent on the use of displayed bid and offer prices by exchanges. Only exchanges are required to provide this level of transparency, and only exchanges now do so. But the proportion of market activity occurring on exchanges and resulting from displayed prices, also called "lit trading," has been steadily eroding for many years.

    A Better Way to Charge for Market Data

    Starting January 3, IEX Exchange will charge for market data. I know reading this sentence might make you want to show up at my house with a pitchfork, but before you do, I'm hoping you'll at least read the rest of this blog.

    D-Limit: One Year In

    One year ago this month, IEX Exchange launched "D-Limit," a new order type that was designed to do something that hadn't been done in many years: make the quality of displayed trading better.

    To D-Limit and Beyond: Impact on IEX Exchange and the Broader Market

    In this post, we use five months of D-Limit data (comparing May-September 2020 to October 2020-February 2021) to show how those expectations have come to life in terms of both IEX Exchange's trading quality and the dynamics of the broader market. We also show how the concerns raised during the approval process have not materialized in the data.

    See all blog posts


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    From IEX Exchange
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    Section title Boxes AndLines
    From IEX Exchange
    Latest Podcast
    Latest Podcast

    Ep.66

    Hedging Commodities

    with Rich Counsell of Stable

    August 1, 2022

    View all podcasts

    The stock exchange with Liquidity... in more ways than one

    Order types that drive performance

    Technology that moves the stock market forward.

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